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A solar power station in space? Here’s how it would work – and the benefits it could bring

A solar power station in space? Here’s how it would work – and the benefits it could bring

The UK government is reportedly considering a £16 billion proposal to build a solar power station in space.

Yes, you read that right. Space-based solar power is one of the technologies to feature in the government’s Net Zero Innovation Portfolio. It has been identified as a potential solution, alongside others, to enable the UK to achieve net zero by 2050.

But how would a solar power station in space work? What are the advantages and drawbacks to this technology?

Space-based solar power involves collecting solar energy in space and transferring it to Earth. While the idea itself is not new, recent technological advances have made this prospect more achievable.

The space-based solar power system involves a solar power satellite – an enormous spacecraft equipped with solar panels. These panels generate electricity, which is then wirelessly transmitted to Earth through high-frequency radio waves. A ground antenna, called a rectenna, is used to convert the radio waves into electricity, which is then delivered to the power grid.

A space-based solar power station in orbit is illuminated by the Sun 24 hours a day and could therefore generate electricity continuously. This represents an advantage over terrestrial solar power systems (systems on Earth), which can produce electricity only during the day and depend on the weather.

With global energy demand projected to increase by nearly 50% by 2050, space-based solar power could be key to helping meet the growing demand on the world’s energy sector and tackling global temperature rise.

 

Some challenges

A space-based solar power station is based on a modular design, where a large number of solar modules are assembled by robots in orbit. Transporting all these elements into space is difficult, costly, and will take a toll on the environment.

The weight of solar panels was identified as an early challenge. But this has been addressed through the development of ultra-light solar cells (a solar panel comprises smaller solar cells).

Space-based solar power is deemed to be technically feasible primarily because of advances in key technologies, including lightweight solar cells, wireless power transmission and space robotics.

Importantly, assembling even just one space-based solar power station will require many space shuttle launches. Although space-based solar power is designed to reduce carbon emissions in the long run, there are significant emissions associated with space launches, as well as costs.

Space shuttles are not currently reusable, though companies like Space X are working on changing this. Being able to reuse launch systems would significantly reduce the overall cost of space-based solar power.

 

Solar power systems on Earth can only produce energy during the daytime. Diyana Dimitrova/Shutterstock

 

If we manage to successfully build a space-based solar power station, its operation faces several practical challenges, too. Solar panels could be damaged by space debris. Further, panels in space are not shielded by Earth’s atmosphere. Being exposed to more intense solar radiation means they will degrade faster than those on Earth, which will reduce the power they are able to generate.

The efficiency of wireless power transmission is another issue. Transmitting energy across large distances – in this case from a solar satellite in space to the ground – is difficult. Based on the current technology, only a small fraction of collected solar energy would reach the Earth.

 

Pilot projects are already underway

The Space Solar Power Project in the US is developing high-efficiency solar cells as well as a conversion and transmission system optimised for use in space. The US Naval Research Laboratory tested a solar module and power conversion system in space in 2020. Meanwhile, China has announced progress on their Bishan space solar energy station, with the aim to have a functioning system by 2035.

In the UK, a £17 billion space-based solar power development is deemed to be a viable concept based on the recent Frazer-Nash Consultancy report. The project is expected to start with small trials, leading to an operational solar power station in 2040.

The solar power satellite would be 1.7km in diameter, weighing around 2,000 tonnes. The terrestrial antenna takes up a lot of space – roughly 6.7km by 13km. Given the use of land across the UK, it’s more likely to be placed offshore.

This satellite would deliver 2GW of power to the UK. While this is a substantial amount of power, it is a small contribution to the UK’s generation capacity, which is around 76GW.

With extremely high initial costs and slow return on investment, the project would need substantial governmental resources as well as investments from private companies.

But as technology advances, the cost of space launch and manufacturing will steadily decrease. And the scale of the project will allow for mass manufacturing, which should drive the cost down somewhat.

Whether space-based solar power can help us meet net zero by 2050 remains to be seen. Other technologies, like diverse and flexible energy storage, hydrogen and growth in renewable energy systems are better understood and can be more readily applied.

Despite the challenges, space-based solar power is a precursor for exciting research and development opportunities. In the future, the technology is likely to play an important role in the global energy supply.

 


 

Source The Conversation

Energy firms want APAC governments to step up in the energy transition

Energy firms want APAC governments to step up in the energy transition

Energy firms are pressing on governments in Asia-Pacific to facilitate the development of renewable power and technologies on the back of the COP26 global climate summit where countries pledged to slash greenhouse gas emissions.

In a series of forums organised by media firm Thomson Reuters last week, industry leaders said that political will is key to ensuring a smooth switch to green fuels.

Nitin Apte, chief executive of Singapore-based solar and wind power firm Vena Energy, said governments need to provide transparent and predictable pathways for companies to align with their sustainability targets in the next few decades.

“Projects that we develop take several years,” said Nitin. “They’re around for 20, 30 years in the communities that they are going to be built in.”

Nitin added that he wants to see countries collaborate and help firms on cross-border energy projects, pointing to examples like Singapore’s slated import of up to 100 megawatts of hydroelectric power from Laos. The venture involves Keppel Electric, a Singapore-based power retailer, and the Laotian state electricity company.

Other speakers said demand for hydrogen power from “centres of consumption” like Japan, China and Taiwan, could be fulfilled by Australian exports. Australia is set to become one of the world’s largest producers of green hydrogen.

 

Each country has a different history, a different energy mix. Does that mean each country will just look at its roadmap in isolation? I guess not, maybe that’s precisely where collaboration comes into play.

Valery Tubbax, chief financial officer, InterContinental Energy

 

“Each country has a different history, a different energy mix. Does that mean each country will just look at its roadmap in isolation? I guess not, maybe that’s precisely where collaboration comes into play,” said Valery Tubbax, chief financial officer of Hong Kong-based hydrogen power firm InterContinental Energy.

Chairperson of Taiwan’s Offshore Wind Industry Association Marina Hsu agreed, saying that associations can invest and advocate for development, but it’s the job of country leaders to “liaise and really think strategically” across the region.

Singapore Minister of State for Trade and Industry Low Yen Ling, speaking at the forum, said countries in Asia-Pacific need to play to their strengths, and “given different countries’ circumstances, the energy transition strategy for countries in APAC will really differ from one another”.

Low said Singapore is focusing on developing emerging technologies, and it recently awarded US$40 million to 12 projects on low-carbon hydrogen, as well as carbon capture, utilisation and storage.

“I hope we will only see an acceleration of the pace of deployment of carbon-neutral technologies,” said Thomas Baudlot, CEO of the Southeast Asia arm of French utility firm ENGIE.

But how much cash other governments in Asia-Pacific can pour into decarbonisation remains in question. In Southeast Asia, the Covid-19 pandemic caused delays in renewable energy projects and put a strain on the public purse to fund capital projects. Many member states’ climate pledges are also contingent on foreign funding.

 

Countries in ASEAN may need to place a greater emphasis on balancing social economics with sustainability.

Mohamad Irwan Aman, head of sustainability, Sarawak Energy

 

“Countries in ASEAN may need to place a greater emphasis on balancing social economics with sustainability,” said Mohamad Irwan Aman, head of sustainability at Malaysian utility firm Sarawak Energy.

Others point to the government’s role in managing private players to prevent a chaotic scramble for power generation and distribution markets. Australia’s electricity market hit a crisis point in 2017, when high wind and solar investments caused the closure of fossil fuel plants, while the grid was not prepared for intermittent power supply. After a series of black-outs and close shaves, the government worked on coordinating supply between power plants and invested in batteries – steps that led to a smoother roll-out of renewables in the years since.

“The foundation for net-zero in the energy infrastructure space, where everyone can be a winner, starts with a thought through and orchestrated plan,” said Morris Zhou, co-founder and executive chairman at Australian solar power firm Maoneng. “I believe that this responsibility sits with the policymakers around the world.”

Citing the need to adapt to climate change, Irwan said companies shouldn’t wait for policy changes before building a business case around addressing climate change. “This is not about environmental issues, it’s about the company’s survival in the long term,” he added.

 

Balancing green power and efficiency

Despite the rapid escalation in renewables, discussions also focused on increasing energy efficiency for existing power infrastructure, particularly in India, which will remain reliant on coal-fired power for some time. Currently the world’s third-biggest emitter of greenhouse gases after China and the United States, India has pledged to reach net zero carbon emissions by 2070. While there will be an overall reduction of coal’s contribution to electricity in the coming years with the ramping-up of renewables, India’s coal consumption is expected to grow in absolute terms.

India’s electricity consumption per person increased by over 30 per cent since 2012, although it’s just 40 per cent of the world average in absolute terms. But as the middle class in the world’s second largest country expands, its energy demand in the next 20 years is expected to outstrip all other countries.

This means not just adding incremental power capacity with renewables, according to Raman Kalra, chief digital officer of Indian solar and wind energy firm ReNew Power, but making the efficiency of existing power assets “much, much higher”.

Kalra said that involves using digital technologies to make the electricity grid work optimally, and to create better public transport networks to take cars off the road. India’s car ownership is expected to increase five-fold by 2040, which will drive demand for oil.

Wasting power is not just India’s problem. A United Nations report found energy efficiency to be the most useful tool in curbing energy demand in Asia Pacific, followed by developing renewable energy. Mismanaged road traffic is the main culprit for energy inefficiencies, alongside manufacturing and a lack of building regulations for houses which end up wasting energy in heating and cooling.

The International Energy Agency also factors in a “major worldwide push to increase energy efficiency” in its projected net-zero scenario, where the 2030 world economy is 40 per cent larger but uses 7 per cent less energy.

 

No carbon is produced from energy that’s not used. It’s not been sexy to have that discussion, but it’s a missing piece.

Jeff Connolly, Chairman and CEO, Siemens Australia and New Zealand

 

“No carbon is produced from energy that’s not used. It’s not been sexy to have that discussion, but it’s a missing piece,” said Jeff Connolly, chairman and CEO of Siemens Australia and New Zealand. The firm provides energy management and tracking services.

While smart meters for energy optimisation, along with renewables like solar and wind, are ready for mass deployment, speakers conceded that other popular technologies like green hydrogen and carbon capture are nascent and expensive. But they’re bullish about the prospects.

“Technology has always surprised us on the upside,” said Vipul Tuli, South Asia CEO of Singapore energy firm Sembcorp.

 


 

Source Eco Business

Renewable energy has ‘another record year of growth’ says IEA

Renewable energy has ‘another record year of growth’ says IEA

It has been another record year for renewable energy, despite the Covid-19 pandemic and rising costs for raw materials around the world, according to the International Energy Agency (IEA).

About 290GW of new renewable energy generation capacity, mostly in the form of wind turbines and solar panels, has been installed around the world this year, beating the previous record last year. On current trends, renewable energy generating capacity will exceed that of fossil fuels and nuclear energy combined by 2026.

New climate and energy policies in many countries around the world have driven the growth, with many governments setting out higher ambitions on cutting greenhouse gas emissions before and at the Cop26 UN climate summit in Glasgow last month.

However, this level of growth is still only about half that required to meet net zero carbon emissions by mid-century.

Fatih Birol, executive director of the IEA, said: “This year’s record renewable energy additions are yet another sign that a new global energy economy is emerging. The high commodity and energy prices we are seeing today pose new challenges for the renewable industry, but elevated fossil fuel prices also make renewables even more competitive.”

According to the IEA report, published on Wednesday, renewables will account for about 95% of the increase in global power-generation capacity from now to the end of 2026, with solar power alone providing about half of the increase.

Raw material prices have risen as the world has emerged from the Covid pandemic and on the back of the energy price rises around the world. These price increases have cancelled out some of the cost falls of recent years in the renewable sector. If they continue next year the cost of wind power will return to levels last seen in 2015, and two to three years of cost falls in solar power will be wiped out.

Heymi Bahar, lead author of the report, said that commodity prices were not the main obstacles to growth, however. Wind and solar would still be cheaper than fossil fuels in most areas, he noted. Permitting was the main barrier to new wind energy projects around the world, and policy measures were needed to expand use of solar power for consumers and industry.

“We need a gear change to meet net zero,” he said. “We have already seen a very important gear change in recent years but we need to move up another gear now. It is possible, we have the tools. Governments need to show more ambition, not just on targets but on policy measures and plans.”

China installed the most new renewable energy capacity this year, and is now expected to reach 1,200GW of wind and solar capacity in 2026, four years earlier than its target of 2030. China is the world’s biggest carbon emitter, but the government was reluctant at Cop26 to commit to the strengthening of its emissions-cutting targets, which many observers had hoped for.

China is targeting a peak in emissions by 2030, which many analysts say is much too late if the world is to limit global temperature rises to 1.5C above pre-industrial levels, the Paris agreement target that was the focus of the Cop26 talks.

Birol said China’s rapid expansion of renewable energy suggested the country could reach an emissions peak “well before 2030”.

India, the world’s third-biggest emitter, also experienced strong growth in renewable energy capacity in the past year, but its target – set out at Cop26 – of reaching net zero by 2070 is also regarded as too weak by many. Birol said: “The growth of renewables in India is outstanding, supporting the government’s newly announced goal of reaching 500GW of renewable power capacity by 2030 and highlighting India’s broader potential to accelerate its clean energy transition.”

 


 

Source The Guardian

‘If you make it, we will buy it’: governments are asking for ‘greener’ steel and concrete to build green cities

‘If you make it, we will buy it’: governments are asking for ‘greener’ steel and concrete to build green cities

As pressure ramps-up to drastically shrink the carbon footprint of the world’s cities, developers and architects have been tinkering with the recipe for the type of materials that goes into a building. City-planners are banking on technology to make cheaper and greener steel and concrete, to drive down the hefty emissions of built infrastructure.

Building and construction are responsible for 39 per cent of all carbon emissions in the world, according to the International Energy Agency. Concrete, the primary component for most built infrastructure, is responsible for a huge amount of greenhouse gas emissions. The five billion tonnes of cement produced each year account for eight per cent of the world’s man-made carbon dioxide emissions. It would rank third for its emissions if it was a country. Then there is steel — whose production accounts for around seven per cent of the world’s greenhouse gas emissions.

As countries look to slash their emissions, hard-to-abate sectors like construction are facing more heat with governments joining hands and forming coalitions to signal that, moving forward, they will shift to buy low-carbon steel and concrete for public construction.

At the COP26 landmark climate summit in Glasgow, the governments of the United Kingdom, India, Germany, Canada and the United Arab Emirates (UAE), under a new coalition named the Industrial Deep Decarbonisation Initiative (IDDI), pledged to support the use of low-carbon materials in building construction. “If you make it, we will buy it,” said the five nations in a statement.

The member governments of the IDDI plan to reveal interim targets by mid-2022, to better align their procurement plans with new net-zero goals for the public construction sector. The pledge also includes requirements for members to disclose the carbon embodied in major public construction projects by 2025, said the UK COP presidency in a press release.

Within the next three years, the IDDI aims to have at least 10 countries commit to purchasing low-carbon concrete and steel.

 

Large steelmakers clean up their act 

The public procurement of steel and concrete in the five nations currently represents between 25 to 40 per cent of the domestic market for such materials. Industry stakeholders said that the pledge is a clear market signal from some of the world’s largest steel and concrete buyers believing that it will create green demand across the supply chains of the building sector.

 

China, India and Japan are the world’s top steel producing countries. Image: World Steel Association

 

“Global construction accounts for 39 per cent of total global emissions, with buildings equivalent to the size of Paris being built every week. There is now a critical and narrow window for sector transformation,” said Jo da Silva, global director of sustainable development at Arup, a London-based engineering, architecture and city planning consultancy.

“Governments need to make companies feel confident about investing now in the processes of making low-carbon steel and concrete,” she said.

China, the world’s largest steel and concrete producer, is missing from the IDDI list. However, its top steelmaker, the China Baowu Steel Group Corp., formed its own global alliance with other steel producers last Thursday, in a bid to gather resources and exchange information in the development of low-carbon metallurgical technology.

 

Known as the Global Low-Carbon Metallurgical Innovation Alliance, it has more than 60 members from 15 countries. These include leading global steelmakers and mining enterprises such as Luxembourg-based ArcelorMittal, German conglomerate Thyssenkrupp and Melbourne’s BHP Group. About 20 Chinese steel companies are also part of the alliance.

Baowu has committed to carbon neutrality by 2050, a decade earlier than the Chinese government’s national target.

 

China’s Baowu Steel Group Corp., the world’s largest steelmaker, initiated the formation of a global alliance of steel producers last Thursday, in a bid to gather resources and exchange information in the development of low-carbon metallurgical technology. [Click to enlarge] Image: World Steel Association

Neil Martin, chief executive for property developer Lendlease’s European business, told Eco-Business that the commitment from steel producers and national authorities to seize decarbonisation opportunities is a potential game-changer for the building sector.

 

Need for sharper approach on embodied carbon 

Lendlease currently uses a large amount of steel – what amounts to a volume sufficient for the building of 60 Eiffel Towers per annum – for its global projects. Substituting the material will make a difference for the environment, given how dirty the steel industry is.

The developer targets to be completely net zero by 2040.

“Property developers have made progress in reducing the operational carbon emissions of buildings, but here’s the rub: almost 90 per cent of building emissions are Scope 3 – indirect emissions from the production of building materials along the value chain. We still have to buy a lot of steel, concrete, aluminium and glass, but we do not have control over their production and supply lines,” said Martin.

Currently, much of the push towards greener buildings is devoted to minimising the energy needed to keep them running, but the situation is changing. During COP26, architects, mayors and property developers have been calling for green building certifications that take embodied emissions from materials into account in order to meet net-zero carbon goals.

Traditionally, steel is made by heating and melting iron ore in a blast furnace at high temperature. A by-product of the chemical reaction that takes place is carbon dioxide. Now, there are several other production methods that are cleaner, involving renewables and green hydrogen. These processes, however, are at various stages of development.

Professor Lam Khee Poh, dean of the National University of Singapore’s School of Design and Environment, and its Provost’s Chair Professor of Architecture and Building, said that strong signalling from national actors to industry matters and governments need to go beyond changing their public procurement models.

 

We need not and should not regard our predominantly steel and concrete jungles as the norm for cities.

Professor Lam Khee Poh, Dean of NUS School of Design and Environment, Singapore

 

“It is not just that the public sector is often a major customer. Yes, there are economies of scale to be gained, but more importantly, the demonstration of leadership from governments has an impact on the enactment of building codes and standards that will pave the way for a green transition,” he said.

Lam, a strong advocate for net-zero cities, said that building industries around the world typically work to existing regulations and only a handful will adopt voluntary standards to advance the field.

According to COP26 reports, between 2015 and 2020, 19 additional countries have building energy codes in place. However, most construction will still take place in countries without such codes.

“The building sector has historically been fragmented. It will take a revolutionary effort to develop a broadly accepted and comprehensive method of calculating embodied carbon that can be effectively and efficiently implemented in the design process for change to happen,” Lam said.

 

Better pricing for low-carbon building materials 

In Southeast Asia, there is also a need to overcome the biased perception that concrete is cheap, which leads to the inertia to replace concrete use in buildings. The low cost of concrete is mainly due to the use of cheap labour in developing countries, and does not take into account the spillover costs when the production of concrete creates externalities – negative impacts on the environment, said Lam.

Referring to a recently-published McKinsey report, Lam argued that products such as carbon-cured concrete, if positioned differently, can potentially give companies an edge among environmentally conscious buyers and greater pricing power.

Timber as an alternative material should be considered too, especially for tropical cities. “We need not and should not regard our predominantly steel and concrete jungles as the norm for cities,” he said.

Yvonne Soh, executive director of the Singapore Green Building Council, told Eco-Business that the council has recently observed that there is no cost premium for using greener concrete in buildings in Singapore, based on current standards.

Soh also noted that lower-carbon options, whether concrete or steel, are already available.

“In fact, there is a lot of interest among private sector players and many are ready to take the leap to try out new materials. We do not have a lack of willing early adopters,” she said. “The key issue is regulatory barriers, because there are basic safety requirements governing the usage of structural materials in a building.”

“Building professionals must also be comfortable with using the material,” she said, drawing parallels to how governments have educated the public on the safety of the Covid-19 vaccines before they pushed for widespread adoption. “It’s not just about sticking some wallpaper on the wall. We have to ensure that [the use of low-carbon materials] does not compromise the building’s structural safety.”

The Singapore Green Building Council now conducts courses on sustainable supply chains for buildings, to encourage firms and stakeholders in the built environment sector to address environmental gaps in their sourcing and reporting. The council also initiated a pledge for the built environment industry to act on embodied carbon. As of November 2021, more than 75 organisations have signed up.

 


 

Source Eco Business

Climate pledges see world closing on Paris goal, researchers say

Climate pledges see world closing on Paris goal, researchers say

BERLIN — Recent pledges by the United States and other nations could help cap global warming at 2 degrees Celsius (3.6 Fahrenheit) by the end of the century, but only if goals to reduce greenhouse gas emissions to “net zero” by 2050 succeed, scientists said Tuesday.

More than 190 countries agreed in Paris six years ago to keep average temperature increases below that level — ideally no more than 1.5 C (2.7 F) — by 2100 compared to pre-industrial times.

The Climate Action Tracker, compiled by a group of researchers who translate emission pledges into temperature estimates, projects that the world is currently set to overshoot the Paris accord’s target by 0.9 degrees.

But if 131 countries that make up almost three-quarters of global emissions meet their pledged or discussed “net zero” goal, then the 2-degree target could be met, said Niklas Hoehne of the New Climate Institute. That’s 0.1 C cooler than the previous optimistic forecast the group made in December.

 

Hoehne said U.S. President Joe Biden’s recent ambitious new climate goals had contributed significantly to the revised estimate, along with the European Union, China, Japan and Britain.

But the pledges still fall short and have to be further revised going forward, he said.

 

“We have to halve global emissions in the next 10 years,” he said.

Asked whether the more ambitious goal of 1.5 C is still within reach, Hoehne said it was technically and politically feasible.

Germany has invited about 40 countries to a virtual meeting this week to discuss further international efforts to curb global warming, ahead of a U.N. summit in Glasgow in November.

Germany’s top court last week ordered the government to set clearer goals for emissions reduction after 2030.

 


 

Source NBC News

Cutting methane emissions is quickest way to slow global heating – UN report

Cutting methane emissions is quickest way to slow global heating – UN report

Fossil fuels, cattle and rotting waste produce greenhouse gas responsible for 30% of global heating

Slashing methane emissions is vital to tackling the climate crisis and rapidly curbing the extreme weather already hitting people across the world today, according to a new UN report.

In 2020 there was a record rise in the amount of the powerful greenhouse gas emitted by the fossil fuel industry, cattle and rotting waste. Cutting it is the strongest action available to slow global heating in the near term, Inger Andersen, the UN’s environment chief, said.

The report found that methane emissions could be almost halved by 2030 using existing technology and at reasonable cost. A significant proportion of the actions would actually make money, such as capturing methane gas leaks at fossil fuel sites.

 

A cattle feedlot in Colorado: 42% of human-caused methane emissions come from agriculture, including burping livestock and manure. Photograph: Jim West/Alamy

 

Achieving the cuts would avoid nearly 0.3C of global heating by 2045 and keep the world on track for the Paris climate agreement’s goal of limiting global temperature rise to 1.5C. Methane cuts also immediately reduce air pollution and would prevent many premature deaths and lost crops.

Methane is 84 times more powerful in trapping heat than carbon dioxide over a 20-year period and has caused about 30% of global heating to date. But it breaks down in the atmosphere within about a decade, unlike CO2, which remains in the air for centuries.

Cutting carbon emissions remains essential in ending the climate emergency, but some experts liken reducing CO2 in the air to the slow process of stopping a supertanker, whereas lowering methane is like cutting the engine on a speedboat and bringing it to a rapid halt.

Prof Drew Shindell, at Duke University, who led the UN report, said: “We’re seeing so many aspects of climate change manifest themselves in the real world faster than our projections,” such as increasing heatwaves, wildfires, droughts and intense storms. “We don’t have a lot we can do about that, other than this powerful lever on near-term climate of reducing methane. We should do this for the wellbeing of everybody on the planet over the next 20 to 30 years.”

Methane emissions are increasing faster now than at any time in nearly 40 years of the observational record,” he said. “Despite Covid … methane shot upwards – it’s going in the wrong direction very, very rapidly.”

 

Intentional and unintentional leaks of methane from fossil fuel drilling sites has contributed to the rise in greenhouse gas emissions. Photograph: Charles Rex Arbogast/AP

 

The surge is partly due to the increased use of fossil fuels, especially gas produced by fracking, Shindell said, and probably more emissions from wetlands as they heat up.

“It’s vital to reduce methane for the sake of near-term climate change,” Shindell said “But it’s also vital to reduce CO2 for the sake of long-term climate change. The good news is that most of the required actions [to cut methane] also bring health and financial benefits.”

Andersen said: “Cutting methane is the strongest lever we have to slow climate change over the next 25 years. We need international cooperation to urgently reduce methane emissions as much as possible this decade.”

The report produced by the UN and the Climate and Clean Air Coalition found that 42% of human-caused methane emissions come from agriculture, mostly from burping livestock, its manure, and paddy fields. Intentional and unintentional leaks of methane from fossil fuel drilling sites, coalmines and pipelines produce 36% of the total and waste dumps cause another 18%.

The report found feasible and cost-effective methane cuts of 60% could be made from fossil fuel operations by stopping the venting of unwanted gas and properly sealing equipment. Waste sites could cut about 35% by reducing the organic waste sent to landfill sites and through better sewage treatment.

The estimated methane cuts from agriculture by 2030 were lower at 25%. “You can change the feed to cows and the way you manage the herds, but these things are fairly small,” said Shindell. “You could make very great inroads into methane emissions by dietary change [eating less meat], but we are just not that sure how quickly that will happen.”

Other measures not specifically targeting methane can still cut emissions of the gas, the report said, such as reducing the demand for fossil gas by increasing renewable energy and energy efficiency, and wasting less food.

The report is the first to include the health and other benefits of cutting methane. The gas causes ground-level ozone pollution and a cut of 45% by 2030 would prevent 260,000 early deaths a year, the report said. More than 13,000 of those would be in the US and 4,200 in the UK. Ozone also damages crops and the methane cut would prevent 25m tonnes of wheat, rice, maize and soy being lost annually.

“Seldom in the world of climate change action is there a solution so stuffed with win-wins,” said Prof Dave Reay, at the University of Edinburgh, who was not part of the report team. A recent scientific study concluded that methane cuts can also “reduce the likelihood of passing climate tipping points”.

World leaders including Emmanuel Macron, Vladimir Putin, Alberto Fernández of Argentina and Nguyen Xuan Phuc of Vietnam all called for cuts in methane emissions at the Leaders Summit on Climate hosted by the US in April. Shortly after, Joe Biden moved to reinstate limits on emissions from oil and gas fields that had been cancelled by Donald Trump.

Jonathan Banks, at the US-based Clean Air Task Force, said: “We desperately need a win on climate change and methane abatement provides an opportunity for a real near-term win. Lately all we’ve been doing is slamming our heads against the wall – society can’t keep doing that for forever.”

 


 

Source The Guardian

Ibstock green lights plans for ‘world’s first’ net zero brick factory

Ibstock green lights plans for ‘world’s first’ net zero brick factory
Ibstock, a leading UK manufacturer of clay bricks and concrete products, has confirmed a major investment in a new pathfinder project designed to put it on track to deliver the world’s first net zero emission brick factory.A combination of rapidly reduced process emissions and greater thermal efficiency is expected to cut the carbon intensity of bricks produced at the Ibstock Atlas site in the West Midlands by 50 per cent. The efficiency improvements are to be coupled with on-site renewable electricity generation and renewable energy procurement, while the remaining emissions will be offset through investment emission reduction projects.

As such, the company said it expects the Atlas project to deliver net zero emissions for its direct Scope 1 and Scope 2 emissions.

The investment, which was announced at the Group’s AGM Trading Update on Earth Day last Thursday, marks the next stage of the company’s well-documented sustainability journey.

The Atlas re-development will receive part of a £60m fund, which will also support substantial wider investments in the company’s West Midlands Aldridge plant.

 

“The Net Zero journey is one we share with our customers,” said Ibstock chief executive Joe Hudson.

 

“We have seen a transformational shift in attitudes from all of our key stakeholders; and there is a ‘sea-change’ in how our customers, and, in turn, their customers, view environmental issues. As the UK’s leading brick manufacturer we recognise that we have to adapt and respond – and this is reflected in our Sustainability Roadmap to 2025.

“We have been leading the way for some time within our sector, with our investments in new production capacity at our Throckley, Chesteron, Eclipse and Lodge Lane plants all reducing the carbon intensity of the manufacturing process, and as the recipients of multiple sustainability awards. However, we can do more, and we can go further. Our plan to invest in Atlas is at the heart of this.”

The company’s goal is to establish the Atlas project as one of the most operationally efficient brick factories in the world and an exemplar for the industry in terms of environmental performance.

Ibstock intends to markedly increase brick production to meet demand for greener bricks and support government objective’s to deliver new homes and infrastructure at scale. Once the development is complete, the Atlas factory will produce more than 100 million bricks per annum, more than doubling its previous capacity.

The company said the investment will also bring crucial benefits to the local economy in terms of employment, training, and opportunities for local suppliers with the project expected to both support the future of the brick factory and create highly-skilled local manufacturing and engineering jobs.

 


 

Source Business Green

Facebook says it has reached net zero emissions

Facebook says it has reached net zero emissions

Facebook has reached net zero emissions, the company has announced, paving the way for it to achieve its wider target of net zero emissions across its entire supply chain by 2030.

The social network said it had reduced its greenhouse gas emissions by 94% over the past three years, and its operations were now supported by 100% renewable energy.

“We set these goals in 2018 and today we are one of the largest corporate buyers of renewable energy,” Facebook said. “We have contracts in place for more than six gigawatts of wind and solar energy across 18 states and five countries. All 63 projects are new and located on the same electrical grids as the data centres they support.”

In 2018 the company announced a more limited goal of cutting emissions by 75% by 2020. Overshooting that bodes well for Facebook’s ability to hit its 2030 target, which incorporates not just the emissions caused by Facebook’s own datacentres but also those from the company’s suppliers, from the hardware developers who build its servers to the outsourcing companies who handle its moderation.

While the company is buying enough renewable energy to power its entire business, though, it is not yet powering its entire business with renewables. Instead, the company, like many others pursuing a net zero goal, can buy renewable energy certificates to match fossil-generated power it is forced to rely on if the electricity grids do not have enough renewable electricity available to satisfy demand.

 

“The biggest lever is to design and build some of the world’s most energy-efficient datacentres,” said Facebook’s chief technology officer, Mike Schroepfer. “But we’ve also become one of the world’s largest buyers of renewable energy.”

Schroepfer, a key member of Mark Zuckerberg’s inner circle, cited a 180MW solar project in Utah, which came online in mid-April, as an example of the company’s positive impact.

He said Facebook’s net zero pledge involved investment in less traditional areas as well. The company’s datacentres are cooled using less water, and less electricity, than traditional air conditioning units, meaning that about 10% of the datacentre’s energy use is for non-computing tasks such as cooling.

Facebook’s announcement brought a mixed reception from climate activists. “This is the bare minimum a company can do in the middle of a climate emergency,” wrote Luke Kingma, a climate activist and brand strategist. “The biggest source of emissions from social platforms is not their data centres. It’s their advertising and content policies.”

In October, the thinktank InfluenceMap found that Facebook had helped promote adverts denying the reality of the climate crisis more than 8m times in the US alone in the first six months of last year. The discovery prompted the US senator Elizabeth Warren to warn that Facebook’s leadership “would rather make a quick buck while our planet burns and communities – disproportionately black and brown – suffer”. She said Facebook “must be held accountable for its role in the climate crisis”.

The race to net zero has become a point of positive competition for some of the world’s largest tech companies. Facebook, Google, Microsoft, Apple and Amazon all have different, ambitious goals for cutting their climate emissions. In September, for instance, Google announced that it had not only reached carbon neutrality but offset all carbon it had ever produced.

Apple has announced a goal to become carbon neutral by 2030, counting not only its entire supply chain but the lifecycle of all its products, including the energy consumed in their use. For instance, it will plant trees to absorb carbon equal to the estimated lifetime carbon emissions of the electricity used to charge iPhones.

On Thursday, Apple announced a $200m fund to invest in reforestation projects to that end. The Restore fund will invest in managed forest properties, generating a financial return that the company hopes will “drive further change”, according to Lisa Jackson, Apple’s vice-president of environment, policy, and social initiatives.

 


 

Source The Guardian

Asian companies claim they are going net-zero — but are their targets realistic, ambitious or greenwash?

Asian companies claim they are going net-zero — but are their targets realistic, ambitious or greenwash?

The race is on for the business world to figure out how to sustain economic growth and go carbon-free.

The penny seems to be dropping that avoiding climate action comes with financial risks. Last October, 200 of the world’s largest multinational companies said they would achieve net-zero carbon emissions by 2050. Among them were Asian companies in sin industries linked with spotty environmental records such as Sinopec and Asia Pacific Resources International Limited (APRIL). Chevron, Philip Morris and DuPont were also among those that made pledges.

By 2050, climate change will shrink the global economy by 3 per cent as drought, flooding, crop failure and infrastructure damage become more severe — unless drastic action is taken to bend the curve on global warming, according to a report by the Economist Intelligence Unit.

The Covid-19 pandemic — which has been called a “dress rehearsal” for climate change — has accelerated the urgency to mitigate the impacts of climate change which cost the global economy billions every year.

“Suddenly, corporates have realised that if we’re going for a 1.5 degrees Celsius cap on global warming [the goal of the Paris Agreement on climate change], we have to hit net zero by 2030. It’ll be very expensive to decarbonise any later,” said Malavika Bambawale, Asia Pacific head of sustainability solutions at Engie Impact, a decarbonisation consultancy.

 

“What is the cost of not decarbonising? That is the question businesses should really be asking themselves.”
Pratima Divgi, director, Hong Kong, Asean, Oceania, CDP

 

Western businesses have led the way, with the likes of Microsoft saying it will make “the biggest commitment in our history” by removing all of the carbon it has put into the atmosphere since its founding in 1975. Asian companies have been slower to commit. “A lot of Asian companies are further down the supply chain, so they can hide for longer,” says Bambawale.

But climate action in a region that produces more than half of global emissions is cranking up. Of the 1,200 or so firms that have signed up to the Science-Based Targets initiative (SBTi), which helps companies cut their emissions in line with the Paris Agreement, 250 Asian companies have set carbon-cutting targets or are in the process of getting targets approved — a 57 per cent increase between 2019 and 2020. Forty-eight of those 250 firms have aligned their business models with the Paris agreement. 

“From a small base, corporate decarbonisation is growing in Asia Pacific,” says Pratima Divgi, Hong Kong, Southeast Asia, Australia and New Zealand director at CDP, a carbon disclosure non-proft that co-developed the SBTi. Companies that have signed up to the SBTi include Hong Kong real estate firm Swire Properties, Chinese computer giant Lenovo, and Malaysian textile firm Tai Wah Garments Industry.

National-level policy commitments, like China, Korea and Japan’s net-zero declarations over the past six months have set the tone for Asian corporate decarbonisation. Competition is helping. Australian supermarket chain Coles declared a 2050 net zero target six months after rival Woolworths did the same, and Singaporean real estate firm City Developments Limited (CDL) made a net zero pledge the week after competitor Frasers Property. Gojek and Grab are racing to be the first ride-hailing app in Southeast Asia to declare a decarbonisation target.

“Now that market leaders such as CDL have made net-zero commitments, it will be harder for their competitors to sit and wait,” says Bambawale.

Malaysian oil and gas giant Petronas announced in October that it would hit net-zero by 2050, a month after PetroChina, the region’s largest oil company, said it would be “near-zero” by mid-century.

 

Aspiration versus reality

But questions hang over how Asia’s big-polluters will realise their declared targets. Ensuring the big emitters share detailed plans and a budget to support their carbon neutral declarations is key for accountability.

PetroChina’s announcement came with “frustratingly little detail”, commented renewables consultancy Wood MacKenzie. The oil giant aims to spend just 1-2 per cent of its total budget on renewable energy between now and 2025. This compares to Italian oil major Eni’s planned 20 per cent of total spend on renewables by 2023 and BP’s 33 per cent by 2030.

Petronas’ own 2050 net-zero pledge is an “aspiration” and not a science-based target that aligns the firm with the Paris Agreement.

“Aspirational targets can only go so far — science-based targets also need to clearly allocate interim short- to medium-term targets to work out what this transformation means to your business and value chain,” says Divgi.

Setting a science-based carbon reduction target takes time. Singapore-based transport firm ComfortDelGro has given itself two years to set science-based goals, but the company avoided giving a carbon reduction timeline in its announcement earlier this month.

Other companies are also being selective with the information they make public. This could be because they do not want to reveal the extent to which they intend on decarbonising, or because they do not have a plan yet. CDL has pledged that it will be net-zero by 2030 — 20 years ahead of competitor Frasers Property — but has declined to give further detail on how it will meet this target.

CDL’s carbon commitment is limited to its wholly-owned assets and developments under its direct control, while Frasers Property is aiming to remove emissions from its entire value chain.

 

Why carbon dieting is difficult

For major emitters like oil and gas firms, decarbonising means transforming their business model without going out of business. Petronas told Eco-Business that meeting its 2050 target “won’t be easy”, and would require the company to “re-strategise how we do our business, with the focus no longer being on profitability or production capacity alone”.

Petronas plans include hydrocarbon flaring and venting, developing low and zero carbon fuels, capturing emissions and investing in nature-based solutions. It also plans to cap emissions to 49.5 million tonnes of carbon dioxide-equivalent for its Malaysia operations by 2024, and increase renewable energy capacity to 3,000 megawatts by the same year.

Meeting its target would “requires us to strike an equitable balance between providing low carbon solutions while still ensuring energy security and business profitability,” said the company’s group health, safety, security and environment vice-president, Dzafri Sham Ahmad.

But removing the carbon from a company’s operations is no longer deemed enough. The indirect emissions that occur in the entire value chain — known as scope 3 emissions — are becoming the new business imperative. A new report from CDP found that emissions from a company’s supply chain are on average 11.4 times higher than its operational emissions – double previous estimates. ExxonMobil’s scope 3 emissions from the use of its products exceed the national annual emissions of Canada, it was revealed in January.

 

“Achieving this aspiration will require us to re-strategise how we do our business, with the focus no longer being on profitability or production capacity alone.”

Dzafri Sham Ahmad, vice-president, group health, safety, security and environment, Petronas

 

Electric vehicle makers such as Telsa are now asking questions about the emissions of their nickel suppliers while computer giant Apple wants to source low-carbon semiconductor chips. But tackling scope 3 emissions is tricky. For instance, how do Singapore construction companies reduce the imported carbon of building materials sourced from China, where electricity is generated from coal? And how does a building owner persuade its tenants to turn down the air-conditioning?

“Reducing scope 3 emissions looks easy enough from the top down. But for people in the field operating the assets it can be a nightmare,” says J. Sarvaiya, an engineer who’s an expert in decarbonisation.

Balancing the carbon books by sourcing renewable energy is also difficult in a region where fossil fuels are still the dominant power source, and where a diversity of regulatory landscapes has made scaling renewables hard and where prices remain high in places. This has led Asian companies to focus on reducing energy consumption first, before looking at procuring renewables, notes Bambawale.

But energy capping is not easy in a high-growth region with escalating energy needs. Southeast Asia’s energy consumption is growing by 4 per cent a year — twice the rate of the rest of the world — and much of that demand comes through cooling as global temperatures rise. Some 30 per cent of a business’s energy bill in this region goes on cooling, says Bambawale.

 

Offset or cut?

Facing so many challenges, it’s tempting for businesses to buy their way to net-zero. Carbon offsets, where companies fund projects that capture or store greenhouse gas emissions to offset their own, are becoming an increasingly popular path to carbon neutrality. Singapore state investor Temasek was one of Asia’s first companies to neutralise the carbon emissions of its operations last year, and did so primarily by buying carbon offsets. Petronas is also relying on offsets as part of its ‘measure, reduce, offset’ net-zero drive.

But offsets are drawing growing scepticism because they enable businesses to carry on as usual, without reducing their actual footprint. “Many companies find that it’s cheaper to reach net-zero by purchasing offsets. It may cost more to replace old technology with more efficient kit than buying offsets,” says Sarvaiya.

Offsets are a necessary piece of the decarbonisation puzzle — but the quality of offset is key, says Bambawale. Companies should ensure that an offset is additional—that is, the carbon reduction would not have happened without the company’s effort. It should also have permanent, rather than temporary, impact. And it should not cause any sort of environmental or social harm. Proving all of that is difficult. “Companies could spend years checking and validating that an offset is actually happening,” says Bambawale.

Offsets will get more problematic the warmer the world gets, Sarvaiya points out. The ability of plants to absorb carbon declines in a warmer world, so more trees will have to be planted to balance the carbon books. Buying renewable energy faces a similar issue. Every one degree increase of surface temperature reduces the efficiency of solar panels by 0.5 per cent.

Companies are also looking to emerging technologies to help them hit carbon goals. In Singapore, concrete producer Pan-United and Keppel Data Centres are part of a consortium that is banking on carbon capture, use and storage technology that won’t be online for another five to 10 years to reduce the carbon impact of the city-state’s oil refining, petrochemicals and chemicals sectors.

Heavy-emitting sectors such as steel production, aviation and shipping have high hopes for hydrogen power, which is considered the missing piece of the renewables puzzle. But questions over cost and transportation make hydrogen a fuel for the future for now. “Moonshot ideas should be the last step,” says Bambawale.

 

Why net-zero is not just hot air

In Southeast Asia, where governments have shown little interest in decarbonising their economies in their post-pandemic recovery plans, there is less incentive for businesses to cut their carbon footprints amid the struggle to stay afloat.

But a wave of commitments to decarbonisation in the past 18 months will likely lead to more. Scores of businesses have signed up for science-based targets during the pandemic, which has played a part in pushing others towards net-zero, says Divgi, adding that a Southeast Asian bank recently committed to SBTi whose suppliers’ emissions were 400 times its own.

Another indicator of interest in corporate climate action is the Task Force on Climate-Related Financial Disclosures (TCFD), a global framework for companies to disclose the financial risks they face from climate change. CDP has seen a 20 per cent increase in TCFD disclosures in Asia over the last year, Divgi notes.

More companies are trying to assess the financial implications of the transition to a low-carbon economy, and the more progressive companies have recognised that calculating climate risk is not a reporting exercise, it’s a strategic one, says Divgi.

“We’re not saying that it [decarbonising] is without problems. There’s a huge level of transformation involved, but climate change presents both a financial and an existential challenge for many businesses,” she says.

“What is the cost of not decarbonising — that is the question that businesses should really be asking themselves.”

 


 

By Robin Hicks

Source Eco Business

Climate change: Jet fuel from waste ‘dramatically lowers’ emissions

Climate change: Jet fuel from waste ‘dramatically lowers’ emissions

A new approach to making jet fuel from food waste has the potential to massively reduce carbon emissions from flying, scientists say.

Currently, most of the food scraps that are used for energy around the world are converted into methane gas.

But researchers in the US have found a way of turning this waste into a type of paraffin that works in jet engines.

The authors of the new study say the fuel cuts greenhouse gas emissions by 165% compared to fossil energy.

This figure comes from the reduction in carbon emitted from airplanes plus the emissions that are avoided when food waste is diverted from landfill.

The aviation industry worldwide is facing some difficult decisions about how to combine increased demand for flying with the need to rapidly cut emissions from the sector.

 

Researchers at the NREL lab in the US distilling the new fuel. Source NREL

 

In the US, airlines currently use around 21 billion gallons of jet fuel every year, with demand expected to double by the middle of the century. At the same time, they have committed to cutting CO2 by 50%.

With the development of battery-powered airplanes for long haul flights a distant prospect at this point, much attention has focussed on replacing existing jet fuel with a sustainable alternative.

In fact the UK government has just announced a £15m competition to encourage companies to develop jet fuel from household waste products.

 

Making paraffin from wet-waste

Current methods of making green jet fuel are based on a similar approach to making biodiesel for cars and heavy goods vehicles.

It normally requires the use of virgin vegetable oils as well as waste fats, oil and grease to make the synthetic fuel.

At present, it is more economical to convert these oils and wastes into diesel as opposed to jet fuel – which requires an extra step in the process, driving up costs.

Now, researchers say that they have developed an alternative method able to turn food waste, animal manure and waste water into a competitive jet hydrocarbon.

Much of this material, termed wet-waste, is at present is turned into methane gas. However, the authors found a way of interrupting this process so it produced volatile fatty acids (VFA) instead of CH4.

The researchers were then able to use a form of catalytic conversion to upgrade the VFA to two different forms of sustainable paraffin.

 

Food waste is a global problem and a major cause of global warming emissions. Source GETTY IMAGES

 

When the two forms were combined they were able to blend 70% of the mixture with regular jet fuel, while still meeting the extremely strict quality criteria that Federal authorities impose on aircraft fuels.

“There’s exciting jet fuels that rely on burning trash and dry waste but this actually works for those wastes that have high water content, which we normally dispose of in landfill,” said Derek Vardon, a senior research engineer at the US National Renewable Energy Laboratory and the lead author on the study.

“Being able to show that you can take these volatile fatty acids, and that there’s a really elegant, simple way to turn it into jet fuel – that’s where I see the broader applicability of this one, and folks can continue to develop and refine it.”

The new fuel has a potentially significant impact on emissions as it not only limits the CO2 that comes from fossil sources used by the airlines, but it also gets rid of the methane that would bubble up from landfill if the waste food was just dumped.

Another major advantage is that this new fuel produces around 34% less soot than current standards. This is important because soot plays a key role in the formation of contrails from airplanes which adds a powerful warming effect to CO2 coming from the engines.

 

Emissions from flying are set to rise rapidly over the next two decades. Source ALEXANDER SHCHERBAK

 

“That’s where we see the most potential for this technology is that you’re preventing methane emissions, and dramatically lowering the carbon footprint of jet fuel. And you just can’t do that with fossil fuels without getting into things like offsets,” said Derek Vardon.

The research team say they are planning to scale up the production of the new fuel and aim to have test flights with Southwest Airlines in 2023.

Many environmental groups are sceptical about attempts to develop sustainable aviation fuels, believing that it amounts to green-washing. They argue that people should just fly less.

“Sustainable aviation fuel is not a silver bullet,” Derek Vardon says.

“So we do want to definitely emphasise that reduction is the most important and most significant change you can make. But there’s also pragmatism and need for aviation solutions now, so that’s where we want to strike a balance as we need a basket of measures, to really start getting our carbon footprint down in a variety of sectors, including aviation.”

The study has been published in the Proceedings of the National Academy of Sciences (PNAS).

Follow Matt on Twitter.

 


 

By Matt McGrath
Environment correspondent

Source BBC