Global warming pollutants in the spotlight
Battery electric buses, so clean in California…
Renewable sources and electric buses
One electric bus, 2,5 diesel buses emission. In U.S.
And the grid is getting cleaner…
Electric bus compared to Cng?
But what about a comparison with natural gas and diesel-hybrid buses? Battery electric buses are in any case cleaner: «Charged with the national electricity mix, an electric bus produces 1,078 grams CO2e per mile, while a natural gas bus produces 2,364 grams CO2e per mile and a diesel-hybrid produces 2,212 grams CO2e per mile». In a few words: natural gas buses have just 12 percent lower global warming emissions than diesel buses. It is quite known, anyway, that the main quality of Cng consists in less particulate emissions than diesel.
Electric buses breakthrough in the U.S.
Nationwide, UCS explains, more than 85 transit agencies have begun electrifying buses. Los Angeles Metro committed last year to fully electrifying its transit fleet by 2030 and Seattle’s King County Metro committed to an all-electric fleet by 2040. According to the consulting company Eb Start Consulting, during 2017 the number of electric buses delivered to US public transit agencies grew 83 percent (182 electric buses in service at 1/1/17, 383 one year later). Although market penetration remains low at about 0.5% of the total U.S. public transit bus market, 9% of all transit agencies either had electric buses in service or on order at the end of 2017. The market leaders? Proterra and BYD, both of which have recently tripled their manufacturing capacity to keep up with the demand. New Flyer come third.
Electric buses cleaner than private cars
“Everywhere in the country electric buses are better for climate than their diesel and natural gas counterparts,” said Dr. Jimmy O’Dea, senior vehicles analyst at UCS and study author. “In cities that get their electricity from power grids with the highest amounts of clean energy, electric buses are even cleaner than the typical car on the road today,” he said. “In regions that use a lot of renewable energy, transitioning to electric buses should be a no-brainer,” said O’Dea. “But even in places like Cleveland or Minneapolis that still rely on coal, electric buses have the advantage of getting cleaner as the power grid gets cleaner, and transit agencies have the option to power their buses with renewable electricity.”
O’Dea: let’s got with heavy-duty vehicles electrification
“Every time a big or small city commits to electric buses they increase the market demand, pave the way for more transit agencies to purchase electric, and get us closer to electrifying all heavy-duty vehicles,” said O’Dea. “It makes sense for all cities to electrify their transit fleets, cut toxic pollution along bus routes, and help the planet avoid the worst impacts of climate change,” said O’Dea. “Electric transit buses are a climate solution that cities and transit agencies can start implementing today.”