Transportation: The large dead weight of EV batteries

The 2020 Honda Fit (using ICE) and the 2020 Chevy Bolt (EV) are nearly identical in capacity and general specifications – except for one very notable item: 2020 Honda Fit – image from Honda web site 2020 Chevy Bolt EV – image from Chevrolet web site: The two cars are amazing similar with nearly identical … Continue reading Transportation: The large dead weight of EV batteries

Climate: Eating vegetarian has little impact on your household carbon emissions

In spite of popular claims that eating vegetarian offers a dramatic reduction on your personal carbon emissions , the actual reduction is about 2%. Which means it is one of the last places you should focus your attention, in terms of having a meaningful impact. I run a separate blog called Social Panic, focusing on … Continue reading Climate: Eating vegetarian has little impact on your household carbon emissions

Transportation: 56% of Norway’s new cars are EV-based – but geesh, crappy journalism

42% of Norway’s car sales were pure battery electric, and almost 14% were plug-in hybrid. Tesla Model 3 was the best-selling car, with 11% of the market. Source: 56% of Norway’s new cars had a plug in 2019, Tesla Model 3 overall best-seller – Electrek This story does not mention  Norway deeply subsidizes the purchase … Continue reading Transportation: 56% of Norway’s new cars are EV-based – but geesh, crappy journalism

Transportation: New battery promises for EVs

Nikola, a start-up that has focused on hydrogen and battery-powered heavy-duty trucks, isn’t offering many details about the new technology and, considering that other promised breakthroughs have failed to prove production ready, there are plenty of skeptics. Even if it does pan out, tech consultancy ABI Research warns it would likely take several years, at … Continue reading Transportation: New battery promises for EVs

Energy: Lifecycle GHG emissions from a hybrid, plug in hybrid and an EV are about the same

This graphic, from the International Energy Agency, illustrates the lifetime CO2 equivalent emissions from different types of vehicles. “BEV” is a battery electric vehicle with a 400 km range, HEV is a hybrid (like Prius), PHEV is a plug-in hybrid electric vehicle.  This chart assumes the GHG emissions from electricity generation plants are in line … Continue reading Energy: Lifecycle GHG emissions from a hybrid, plug in hybrid and an EV are about the same

Energy: Unplugging your cell phone charger does nearly nothing for the environment

Few people have any idea about the lifetime energy usage of popular consumer products.  50-75% of the energy and green house gas emissions for many cars occurs during manufacturing. Switching to an EV (for which much of its lifetime energy/GHGs is during manufacturing) may have little benefit to the earth. When it comes to unplugging … Continue reading Energy: Unplugging your cell phone charger does nearly nothing for the environment

Energy: Should you buy carbon offsets, an EV or solar PV to reduce your environmental impact? It depends.

Should you buy an EV? Should you install solar PV? Details matter a lot as to whether your decision leads to actual environmental improvements – or not. Should you buy carbon offsets? A better solution is to invest in direct solutions, even helping your neighbors become efficient energy consumers, to buy or install solar PV or an EV, depending on where you live.

Transportation and Energy: Electric utilities push for electric vehicle (EV) expansion to grow their businesses

Among a decline in electricity sales in the United States, electric utilities “need a new source of load growth” and “electrification of the transportation sector” is a huge opportunity. To that end, they are pushing for more EVs, even though the effect on greenhouse gas reductions may be mixed for now (due to use of fossil fuel-based generation).

Transportation: What percent of greenhouse gas emissions come from personal vehicles?

News reports imply that our cars are the largest contributor of greenhouse gases in the U.S. In fact, the “transportation” segment is the largest producer but this includes all transportation including business vehicles, medium trucks and semi-trucks, aircraft, ships at sea and more. Drilling down, a reasonable estimate is that our personal vehicles contribute about 13% to GHG output in the U.S.