Gas peakers need to be replaced with something cleaner. Like grid batteries. But the question is âwhenâ, says Maximilian Auffhammer at the Energy Institute at Haas. Summarising his co-authored paper, he explains that a review of 19 gas peakers in the U.S., replaced with Li-ion grid-scale batteries, reveals only 5 make economic and climate sense (i.e. a positive net present value after including monetised climate and human health impacts). … [Read more...]
The problem with CO2e: we need separate emissions data for each climate pollutant (methane, soot, etc.)
Currently, we measure non-CO2 emissions by converting their impact into the CO2 equivalent over a 100-year period. The problem is that other pollutants can have their worst impact well within 100 years, like methane (the first 20 years is when the impact of methane is worst). Though CO2 has caused the most warming, other short-lived pollutants have contributed nearly half of the total, particularly methane, black carbon from soot, and some … [Read more...]
Fulfilling U.S. wind and solar ambitions will use under 1% of its land (thatâs less than the fossil fuel footprint)
Meeting the U.S.âs wind and solar ambitions in full would take up less than 1% of its land, less than the fossil fuel industryâs current footprint. Steve Clemmer at UCS goes into the details of NRELâs comprehensive study of land use for wind and solar. Of particular interest is the observation that setting a high bar for âresponsible sitingâ of wind and solar projects - avoiding the use of sensitive, protected, urban areas, difficult terrain or … [Read more...]
Health benefits of Wind Power: first replace the most polluting fossil plants, not the most expensive
It makes economic sense, when intermittent wind (or solar) generation rises, to turn down the most expensive fossil plants. Or does it? Join the dots to health costs and it may make more economic sense to turn down the most polluting plants first. Jennifer Chu at MIT describes research there that creates models and scenarios to interrogate that theory. Using hourly generation records, pollution and health cost data from across the U.S. they found … [Read more...]
What does the âglobal carbon budgetâ mean? Have we got 9 years left?
Piers Forster and Debbie Rosen at the University of Leeds and Robin Lamboll and Joeri Rogelj at Imperial College London, writing for Carbon Brief, look at the carbon budget estimates of the Global Carbon Project and the IPCC, the methodology and the inevitable uncertainties. They compare it to their own latest report from the CONSTRAIN research project. Where the GCP and the IPCC estimate nine years left of carbon emissions at current emission … [Read more...]
Pollution costs are driving U.S. states to look for alternatives to Gas-Fired Plants
In the U.S. a growing number of states and regulators are directing utilities to look for alternatives to proposed gas-fired power plants, citing environmental justice and community health impacts, explain Caitlin Odom and Lauren Shwisberg at RMI. So itâs not just about emissions: pollution matters too. The authors quote studies that show clean energy portfolios (CEPs) not only reduce energy costs, but can save billions of dollars in community … [Read more...]
Turning waste biomass into clean fuel: cheap, portable equipment, cuts emissions, earns income for rural poor
The burning of biomass accounts for 10% of primary energy used worldwide: wood, peat, animal dung, corn stalks, rice husks, hay, straw, and other agricultural waste. Billions of people, mainly in remote and poorer regions, rely on such fuels for cooking, heating, and other household needs. But itâs a major source of emissions as well as pollution. And, annually, an estimated $120bn worth of crop and forest residues are burned out in the open … [Read more...]
How to turn a 17-minute private jet flight into investment for green aviation
Flights in private jets are 10 times more polluting than commercial flights, according to T&E. Itâs why, this summer, public anger grew over their use by celebrities and rich individuals, following the attention drawn to them by the Twitter account @CelebJets that tracks their use. Kylian Mbappe, Taylor Swift, Kylie Jenner, Elon Musk and many more: sports stars, pop stars, rich entrepreneurs, they were all named along with the very short … [Read more...]
New U.S. âBuy Cleanâ plan earmarks billions for low-carbon cement, steel and other building materials
New guidance from the U.S. federal government, combined with historic Inflation Reduction Act investments, could turbocharge markets for low-carbon cement, steel, and other building materials. Victor Olgyay, Anish Tilak and Connor Usry at Rocky Mountain Institute explain how the new âBuy Cleanâ recommendations will mean the procurement of green building materials for federal building and transportation projects. That will lead to a boost in … [Read more...]
Do e-bike subsidies lift sales, change habits and cut emissions?
What happened when Sweden introduced a 25% rebate on the cost of an e-bike for 12 months over 2017-18? Lucas Davis at the Haas School of Business reviews a study that digs into the consequences. Sales increased by 70%. E-bike prices remained steady, so the sellers didnât simply raise prices to eat up the rebate. The study estimates that although a third of those sales would have âhappened anywayâ (i.e. no additionality) the remaining two-thirds … [Read more...]
Pathway for 100% Renewables in 24 U.S. states by 2035
We should not be surprised to see a growing number of 100% renewables roadmaps, with target dates in the 2030s, from nations as the transition gains pace. This study, âOn the Road to 100 Percent Renewablesâ led by The Union of Concerned Scientists (UCS), details how the 24 states that make up the members of the U.S. Climate Alliance (USCA) can meet all of their electricity needs with renewable energy by 2035. Paula Garcia at UCS summarises the … [Read more...]
New York City to stop new buildings connecting to the Gas network
New York City is the U.S.âs largest metropolis, over twice the size of second spot Los Angeles, and is still growing. It has just passed a bill that effectively stops new buildings from hooking up to the gas network. The significance is not simply because of NYCâs global prominence, but because it gets very cold in winter with average temperatures just above freezing point. The move is a major win for the electrification of buildings. The … [Read more...]
E-fuels for cars are expensive, and pollute the air as much as petrol
MEPs and governments are currently deciding on an EC proposal for all new cars sold from 2035 to be 100% zero-emissions. Here, T&E present test results that show e-fuels should not be allowed to replace petrol. T&E are concerned that e-fuels are being promoted as a way to prolong the life of ICE vehicles. But their tests show that e-fuels produce just as much NOx, three times more carbon monoxide, and twice as much ammonia. Though e-fuels … [Read more...]
Vehicle charge zones: too high, and driver detours can increase emissions
Vehicle congestion charge zones are a way of taxing drivers for the emissions they create. They have great potential to steer polluters towards shorter and/or fewer journeys, and towards cleaner fuels. But it's full potential that has gone mostly untapped. Most âcordon zonesâ found in big cities like London, Stockholm, Milan and Singapore keep the rules very simple. Journey length is rarely, if ever, taken into account. Importantly, no one is … [Read more...]
Chinaâs car sales target: 40% EVs by 2030 will cost CNY 100bn/year (âŹ13bn, $15bn)
By the end of the 2020s China will phase out EV subsidies and instead rely on a mandate imposed on manufacturers to target 40% of car sales being electric by 2030. Nancy Stauffer at MIT reviews a study that estimates the new rules will result in 66m EVs sold in China in the next 10 years. That will move EVs well into the mainstream and have global consequences. According to the study, the total cost of that transition will be 100bn yuan/year … [Read more...]
