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...]
Hydrogen, CCS, and more: without new clean energy technologies we cannot hit our 2050 emissions targets
The flagship 400-page report, Energy Technology Perspectives 2020, is another salvo from the IEA to concentrate the minds of the world on new technologies and their roll out. Thatâs because transforming electrification and the power sector alone, where most of the progress is happening, will only get us one-third of the way to net-zero emissions by 2050. The IEA has analysed over 800 new technology options. The most important categories â … [Read more...]
Optimising Cyanobacteria for carbon fixation and biofuels
The landscape can be changed for energy transition technologies by research breakthroughs, and that includes work on bacteria and proteins. The National Renewable Energy Laboratory (NREL) and its partners have been running experiments on cyanobacteria. These single-cell organisms, also using photosynthesis, fix carbon dioxide twice as efficiently as plants. They grow rapidly, doubling their numbers in three hours. The first step is to understand … [Read more...]
Tipping Points reached for Solar, Wind, Batteries, EVs. What of the other Clean Energy techs?
History shows a disruptive technologyâs tipping point can be under 5% of market share, thatâs all it takes. The number of horses in use peaked in the U.S. once car ownership reached 3%. Gas lighting in the UK peaked with electric lighting at just 2% of the market. Landline phones in the U.S. fell precipitously after mobiles captured 5% of the market. Ji Chen and Koben Calhoun at RMI argue the tipping point has already been passed for solar, wind, … [Read more...]
IEA projections 2020: energy demand plunges but Renewables still grow at Gas, Coalâs expense
The IEA has made its projections for the impact of the pandemic lockdown on energy demand in 2020 (they say itâs too early for them to assess anything more long term), and its implications for the different generation types. This article summarises their special Global Energy Review 2020, published at the end of last week. It assumes that lockdowns are eased this year and growth gradually returns. With that, global energy demand will fall 6% in … [Read more...]
Defining green investments, ending greenwash: the EUâs new Taxonomy Regulation
When the EU Commissionâs new Taxonomy Regulation is approved, expected in March, it will provide the legal framework to define what is a truly âgreenâ investment. As Luca Bonaccorsi at Transport & Environment explains, right now asset managers and national authorities are free to define what is green, allowing some to greenwash investments in things like oil and pesticides. The Taxonomy's purpose is to reduce ambiguity and therefore increase … [Read more...]
Biofuels âlight-to-powerâ slump: because photosynthesis is no match for Solar PV
The success of energy crops depends on many things. But the first link in the chain is a weak one: natural photosynthesis, the conversion of light into energy by plants. The problem is the efficiency of photosynthesis is no match for that of a modern solar PV cell. And while solar technology keeps improving, mother nature â not a signatory to the Paris Agreement â has no plans to do so. Any progress must come from biotechnology which is slow … [Read more...]
Biofuels: slump in investment and innovations must be reversed
IRENA is predicting the future of liquid biofuels by monitoring the number and technology-type of patents. Itâs not looking good. The first thing to note is that, after a promising rise, the total number of patents has slid from over 6,000 in 2011 to around 2,500 in 2017. Thatâs reflected in the dramatic fall in global biofuel investments, from $27bn in 2007 to $2bn in 2017. The likely main cause is a lack of stable regulation, say Alessandra … [Read more...]
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