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...]
Methane emissions reach unexpected new highs. Is climate change causing a runaway effect?
Simon Redfern at Nanyang Technological University, Singapore summarises his co-authored study that says methane emissions are four times more sensitive to climate change than that estimated in the latest IPCC report, which was only published in February 2022. The study follows the observation that, despite the pandemic stalling the world economy, methane emissions have reached new highs. Not because methane emissions have risen but because … [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...]
All estimates of the âcostâ of climate action should include the savings and benefits
Too many climate mitigation scenarios calculate the cost of that transition without measuring the savings and benefits, explain Alexandre Köberle and Joeri Rogelj at Imperial College London, Toon Vandyck at the EC's Joint Research Centre, and Celine Guivarch at the Centre International de Recherche sur lâEnvironnement et le Developpement, writing for Carbon Brief. This leads to a pessimistic view of the challenges ahead, and public aversion to … [Read more...]
COP26: a strategy for tackling âimported deforestationâ
Palm oil, beef, cocoa, coffee, soy, and other agricultural products are responsible for deforestation in the producing countries. Of the 10m hectares of tropical forest lost each year, two-thirds can be unambiguously attributed to agricultural expansion and international trade is responsible for about half of this. The EC is due in December to unveil a legislative proposal to address the issue. Alain Karsenty and Nicolas Picard, writing for IFRI, … [Read more...]
Methane Removal: an overlooked climate solution that could cut temperatures by 1°C?
If you think CO2 removal isnât getting enough attention, methane removal is getting virtually none. There are attempts to reduce methane emissions directly from fossil fuel production. But Rob Jordan at the Stanford Woods Institute for the Environment describes studies and models that conclude we should be looking at large and wide scale reduction and capture of methane. A 40% reduction in global methane emissions by 2050 could reduce peak … [Read more...]
Only Carbon Removal can make Germanyâs new climate goal a reality
Germany canât hit its emissions targets without significant carbon dioxide removal (CRD), explain Simon Göss and Hendrik Schuldt at cr.hub. Clean energy and energy efficiency wonât do it alone. Policymakers have grasped that hard-to-abate sectors (industry, agriculture, buildings, transport) will struggle to deliver the reductions needed. Meanwhile, the climate disasters (floods, wildfires, etc.) that have cost lives this year are piling on … [Read more...]
‘Fit for 55’ should prioritise decarbonisation of laggards: buildings, transport, industry, agriculture
Todayâs long-awaited "Fit for 55" legislative package from the European Commission will trigger intense and difficult negotiations that will last two years, says Nicolas Berghmans at IDDRI. Its scope is wide and inevitably interconnected. The twelve legislative proposals include adjustments to existing measures (renewable energy, energy efficiency, carbon market/EU ETS, energy taxation, climate effort sharing between Member States/ESR, land use … [Read more...]
Land Use and Forestry: existing LULUCF rules allow EUâs carbon sink to decrease. Change them
The EUâs current Regulations for Land Use, Land Use Change and Forestry (LULUCF) allow the regionâs carbon sink to decrease, explains Ulriikka Aarnio at CAN Europe. Itâs due to exclusions and a lack of transparency and proper accounting for emissions. As a result, the EUâs carbon sink has already decreased significantly in the last few years, extracting only 265 Mt of CO2 in 2019. Different activities both emit and absorb carbon. 2019 saw 135 Mt … [Read more...]
Does new German target mean Coal gone by 2029, Renewables 65% by 2030?
The stiffer emissions targets introduced this month to Germanyâs Climate Protection Law - CO2 emissions from the energy industry must fall to 108 Mt by 2030 instead of 175 â point to an even earlier coal phase-out date of 2029, with renewables generating 65% of electricity by 2030. The existing plan had meant coal must be gone by 2038. Michael ClauĂner, Carlos Perez-Linkenheil and Simon Göss at Energy Brainpool explain why, using their modelling … [Read more...]
Carbon Border Adjustments: can the EU create a mechanism that is fair?
The proposed EU carbon border adjustment mechanism (CBAM) is meant to control imports of high-carbon goods from places that are not bound by Europeâs rising de-carbonisation rules. The obvious targets are commodities like steel, aluminium and cement. But it could be extended to all EU imports, including agricultural products. Michel Colombier at IDDRI warns that the EU is in danger of not listening nearly enough to its trading partners. He … [Read more...]
Rural America needs investment, jobs. $82bn/yr of Wind and Solar can deliver it
The build out of wind and solar in the U.S. â to rise from 165GW today to over 500GW in 2035 â will overwhelmingly happen in the open spaces of rural America, explains Kevin Brehm at RMI. It should result in a major boost to stagnating communities. The $82bn/year of clean energy investment will take second spot to the current three big rural spends: highways ($90bn), water utilities ($57bn) and mass transit ($45bn). By 2030 rural clean energy … [Read more...]
Franceâs recovery plan: will support for emissions-high sectors compromise a new Green economy?
The French recovery plan, formally presented today, combines emergency rescue measures, economic stimulus and longer-term investments. A substantial âŹ32bn out of the âŹ100bn budgeted is earmarked for the green economy. But SĂ©bastien Treyer at IDDRI asks whether rescue measures for traditionally emissions-high sectors - tourism, aviation, automotive, buildings, agri-food â will collide with climate targets. He references studies that should be used … [Read more...]
Enhanced Weathering: crushed rocks spread on farmland can capture billions of tons of CO2/year
Enhanced Weathering is a carbon capture process that could remove over 2bn tons of CO2 each year (for comparison, the U.S. emitted 5.3bn in 2018), explains Benjamin Houlton at the University of California. Silicate minerals exposed to the weather have been sequestering atmospheric carbon and turning it into rock since the dawn of time, but itâs a process that normally takes thousands of years. This period can be cut to two years by grinding … [Read more...]
An EU Hydrogen strategy: from industry feedstock to energy vector
The bravest recovery strategies will invest robustly in new yet-to-take-off clean energy technologies. If you are going to have to spend hundreds of billions to revive your economy isnât it better to replace the old with the new rather than prop up what youâll have to abandon soon anyway? In anticipation of that happening, new technologies are lining up. Here, CĂ©dric Philibert at the IFRI Centre for Energy & Climate summarises their detailed … [Read more...]
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