ghouse
Joined 17 years ago
Joined 17 years ago
If we can have open standards to allow my car to interoperate with my home batteries (Franklin, Enphase, Tesla Powerwall or others), we'll all be better off.
I considered "(is supposed to)" preceding "protect"
And that is where many of us have played a role: increasing engagement.
One approach would be a revenue-neutral carbon tax on extraction of sequestered carbon. And border carbon taxes for imports from countries who don't also have an internal carbon tax.
Also, worth noting in the event the conclusions are extrapolated to diesel over the road transportation: train diesel is much less expensive as it's exempt from fuel (state and federal) taxes.
Not "most," but a lot. From the article: > regenerative braking on the new trains is generating and sending back to the electric grid approximately 23% of the energy consumed by the system
They would love to reconductor the other circuits. In the US, the utilities make a guaranteed rate of return on investments in the transmission system. So, anything they regulators will let them do, they'll do -- not necessarily because it has technical benefits, but because it has economic benefits.
This is one reason why reconductoring isn't that popular with utilities -- it allows the utility to get more capacity with less spend, so less profit.
The primary difference between the traditional conductors and advanced conductors is temperature tolerance. Most transmission lines are aluminum conductors with a steel core for strength (ASCR). As current increases, so does temperature, causing lines to sag (or the steel anneal if too hot).
Advanced conductors use a different composition to operate at higher temperatures, or otherwise carry more current (one example: aluminum conductor, composite reinforced, or ACCR) so as to have similar weight (and profile) to the original, traditional conductor.