Is the grid in Shenzhen mostly coal-powered?
Coal provided electricity to power electric powers ends up _still_ being cleaner than ICEs, which are just about the worst in efficiency or cleanliness as you can get.
Shenzhen Electrifies Entire Public Transit Bus Fleet
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Re: Shenzhen Electrifies Entire Public Transit Bus Fleet
#12Is the grid in Shenzhen mostly coal-powered?
Coal provided electricity to power electric powers ends up _still_ being cleaner than ICEs, which are just about the worst in efficiency or cleanliness as you can get.
Coal releases lead, radon, and other toxic pollutants into the environment.
And you haven't supported the assertion that coal-powered EVs emit less CO2, and it contradicts what I've generally heard elsewhere.
Re: Shenzhen Electrifies Entire Public Transit Bus Fleet
#13Denver bought a bunch of electric busses from BYD for service on the 16th street mall. My understanding is BYD offered a 12 year warranty on the batteries, in order to make the economics work.
Stanford electric buses are BYD. It is right under the nose of Tesla :) (on the med school route the buses even pass right by the Tesla headquarters)
Re: Shenzhen Electrifies Entire Public Transit Bus Fleet
#14The low-speed maglevs being built in China seem a little more interesting.
https://www.yicaiglobal.com/news/construction-low-speed-magl...
Getting people from point A to B faster on mass transit will get them out of cars and cabs.
Re: Shenzhen Electrifies Entire Public Transit Bus Fleet
#15This is really impressive, I've been very skeptical of heavy payload capability and range for electric vehicles until now. Will be interesting to see how well they perform, how the charging infrastructure works and battery life
> very skeptical of heavy payload capability and range for electric vehicles
heavy usually means "not that fast" - so less of the speed-squared drug (at 25miles/hour i remember some guys did double the range, like 400miles+, on a Tesla S) and also the weight of the battery becomes less of a factor on the background of the whole vehicle and cargo weight.
Re: Shenzhen Electrifies Entire Public Transit Bus Fleet
#16Denver bought a bunch of electric busses from BYD for service on the 16th street mall. My understanding is BYD offered a 12 year warranty on the batteries, in order to make the economics work.
I noticed RTD had new buses last time I was there. I recall that the original TransTeq EcoMark buses were very progressive for their time. If I remember the story correctly, RTD couldn't find a company that built the right bus for them, so they went off and more or less built their own. Then, over the next decade and a half, I began to see their distinctive low floors and warty roofs in cities and airports all over t…
Funny you should mention the noise. I took a tour of their charging facility, and the fleet manager noted the busses were originally too quiet. They went to the toy store, bought some toy trucks and rigged that growling solution from the truck noise makers.
Re: Shenzhen Electrifies Entire Public Transit Bus Fleet
#17Talk about all the buses you want. What I really really want to hear about is the chargers that make it possible. Give me maximum MW rates and rates for how much each station can crank out in total.
Re: Shenzhen Electrifies Entire Public Transit Bus Fleet
#18Earlier quoted context omitted.
Coal provided electricity to power electric powers ends up _still_ being cleaner than ICEs, which are just about the worst in efficiency or cleanliness as you can get.
Coal releases lead, radon, and other toxic pollutants into the environment. And you haven't supported the assertion that coal-powered EVs emit less CO2, and it contradicts what I've generally heard elsewhere.
Do the math instead of listening to people who resist change.
You are right about the extra stuff that comes with coal power, but you will find with a good modern coal plant, transmission losses, and battery/electric motor loss still puts less CO2 in the air that gasoline cars per mile travelled.
Re: Shenzhen Electrifies Entire Public Transit Bus Fleet
#19Denver bought a bunch of electric busses from BYD for service on the 16th street mall. My understanding is BYD offered a 12 year warranty on the batteries, in order to make the economics work.
Good use case, because damn is it easy. It's ~2 miles, inside a pedestrian corridor (one of the few in America, alas!). A modest size battery pack would go quite a ways when you barely hit 10 mph (16 kph), at least if there's a solid regenerative brake.
Re: Shenzhen Electrifies Entire Public Transit Bus Fleet
#20Is the grid in Shenzhen mostly coal-powered?
Coal provided electricity to power electric powers ends up _still_ being cleaner than ICEs, which are just about the worst in efficiency or cleanliness as you can get.
Yes, but it depends on the coal and the emission controls on the plant using it. This is china we are talking about after all.
Low quality coal used directly for heating in the villages, for example, is very very dirty.