For transport, biofuels have lower emissions than gasoline/petrol, but EVs will have the lowest emissions of all. Hence the opposition to those biofuels, along with objections to the valuable cropland used to make the ethanol. But the overall advantage depends on the speed of transition to EVs charged with clean electricity. Now, a calculation has been made of the amount of agricultural land preserved for global food production - or kept as … [Read more...]
SAFFiRE: cheap, Sustainable Aviation Fuel from agricultural waste
SAFFiRE (Sustainable Aviation Fuel From [i] Renewable Ethanol) is a 10-ton-per-day pilot plant project. The goal is 7bn gallons of sustainable, low-carbon aviation fuel by 2040. Ryan Horns at NREL explains that the sustainable fuel is made from corn stover, an agricultural waste product, chemically broken down into sugars that can then be converted to fuels. The SAFFiRE process can take advantage of the existing infrastructure of over 200 ethanol … [Read more...]
Engineered soil microbe can convert CO2 20 times faster than natural photosynthesis
New research led by the U.S. Department of Energyâs SLAC National Accelerator Laboratory and the Max Planck Institute for Terrestrial Microbiology in Germany has shown how a bacterial enzyme found in the soil can be made to convert carbon dioxide into carbon compounds 20 times faster than plant enzymes do during natural photosynthesis. As Glennda Chui at Stanford University explains, itâs very early days but could open a door to artificially … [Read more...]
Russia-Ukraine stalls EU Biofuels, but accelerates its medium/long-term targets
Rising food and fuel costs are pushing several EU countries to freeze or lower 2022-2023 low-carbon blending mandates for transportation fuels. That will likely mean a rise in emissions, but only in the short term, says Cornelius Claeys at Stratas Advisors. However, the same policymakers understand that ending imports of fossil fuels from a belligerent Russia is an opportunity to raise low-carbon targets for the medium and long term. So, right … [Read more...]
Record Renewables additions for 2021 and 2022 despite supply bottlenecks prove Solar & Windâs resilience
Despite â or perhaps because of â global market and political turmoil, renewable power is set to break another record in 2022. Thatâs after 2021 also saw record new capacity from solar, wind and other renewables worldwide. Itâs mainly driven by solar PV in China and Europe as governments around the world take advantage of renewablesâ energy security and climate benefits, according to the IEAâs latest Renewable Energy Market Update. 295GW of new … [Read more...]
Event summary: âUnlocking the potential of Bioenergyâ
Sara Stefanini provides a written summary of our panel discussion held on Thursday March 17th 2022. Itâs a full summary of the 90 minute discussion (including audience questions), but it begins conveniently with a summary of the highlights (potential for bioenergy, hard-to-abate sectors, sustainability, policy needs). Those highlights include the need to scale bioenergy up from around 50 EJ today to 150 EJ by 2050; the importance of carbon … [Read more...]
Biomethane for decarbonising transport: the Swedish example
Biomethane has a critical role to play in the decarbonisation of transport, particularly long-distance trucks and ships, where electrification is more difficult and expensive. Angela Sainz Arnau at the European Biogas Association explains that biomethane represents one of the lowest greenhouse gas intensive pathways when the whole emissions lifecycle is measured. However, when nations implement bans on internal combustion engines to cut the use … [Read more...]
Green hydrogen-based fuels pivotal in decarbonising Shipping by 2050
The international shipping sectorâs emission levels are comparable to Germanyâs. Like aviation and heavy transport, reaching net-zero will need renewable fuels â direct electrification wonât be sufficient. Existing fossil fuel engines allow for biofuel blends of up to 20% without any modifications, and 100% methanol engines are a proven technology. Making sufficient quantities of clean fuels - without consuming food crops â is the challenge. … [Read more...]
Engineering yeast to create Biofuels from non-food crops (straw, grass, cellulosic waste)
Using ethanol can reduce the global consumption of fossil fuels. But, commercially, ethanol in the U.S. is produced from corn and not enough is grown to make a significant impact on U.S. fuel needs. Anne Trafton at MIT describes research that has engineered yeast to break down straw and woody plant material to create ethanol as efficiently as itâs done from corn. High yields of ethanol were extracted from five different types of cellulosic … [Read more...]
Aviation and Shipping emissions: will Biden take on the challenge?
William Todts at Transport & Environment is very worried about the Biden administrationâs approach to aviation and shipping emissions. The signals are that the U.S. wants to work through the International Civil Aviation Organization (ICAO) and the International Maritime Organization (IMO). But they have neither the ability nor the means to spur technological breakthroughs. That matters, because itâs only the use of alternative fuels that can … [Read more...]
Clean Trucks are coming: a review of battery, hydrogen, synthetic fuels and more
New EU fuel efficiency rules are forcing truck makers into a race to get their low emission vehicles onto the roads. From 2025, newly registered trucks must have 15% lower emissions, and from 2030 itâs 30%. Battery-electric drivetrains are most likely to dominate, assisted in their evolution by the assured progress and charging infrastructure of EVs. Hydrogen fuel cells and synthetic fuels are also in the game, though hindered by the inevitable … [Read more...]
A new EU Gas Market must expose it to all clean energy solutions, not just gas-on-gas
Towards the end of this year the EC is expected to issue new proposals for gas legislation, a once in a decade market reform. Simon Skillings and Lisa Fischer at E3G highlight the big difference between the design of gas and electricity markets for Europe. The electricity market is growing, the gas market needs to shrink. The authors quote figures showing that the EU's 55% emissions reduction target for 2030 means natural gas use will reduce by … [Read more...]
Nuclear-Wind hybrid plants for grid stability, Power-to-X and more
How would you use a nuclear-wind hybrid plant and maximise its potential? When intermittent windâs output falls, nuclear can step in to feed the grid. When itâs not doing that it can use its power to run the production of a wide range of commodities: from biofuels, hydrogen, pumped hydro to wastewater purification, desalination, chemical manufacturing and more â including straightforward thermal power for industry. In collaboration with NREL, the … [Read more...]
Bioenergy is the undervalued pillar of the clean energy transition
Bioenergy is already the worldâs largest source of renewable energy, responsible for 70% of the supply (and around 10% of total primary energy). Burning organic matter goes back to the invention of fire and is still commonplace around the globe. Yet it gets hardly any of the attention and policy support thatâs given to other clean energy technologies like solar, wind and now hydrogen. Bioenergy can and should play an even greater role, explain … [Read more...]
Biofuels vs Hydrogen: which can fuel aviation, shipping, trucks?
The positive signals coming from EV sales and charge points contrast with the lack of progress in finding alternative fuels for aviation, shipping and trucks. Cornelius Claeys runs through the prospects for biofuels and hydrogen to power long-haul transport. Biofuels are already used as a substitute for fossil fuels, and EV uptake will usefully free them for fuelling heavy transport. But as decarbonisation ambitions rise the pressure on scarce … [Read more...]
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