Even non Battery electric trains can speed up or slow down at different points (while still staying on schedule) to act as a variable demand for the local grids. Batteries just extend that.
https://arstechnica.netblogpro.com/science/2021/11/can-we-ru...
> The analysis becomes very interesting when the researchers leave freight behind and start thinking about what could be done with many big, mobile batteries. Even without moving them, freight companies could use their capacity to provide grid stabilization services or sell back power when the price gets high. In extreme cases, this system could actually pay for the entire infrastructure.
> "Preliminary estimates of the most expensive 90 hours per year in the ERCOT [Texas] market, for example, show that batteries could be discharged at $200/kWh, potentially generating enough revenue to pay for the upfront battery cost in a single year," the study says.
> The batteries could also be moved to locations that have been struck by power outages or natural disasters, towed there by locomotives running on diesel instead of draining the batteries.
I want this for everything with a battery, it’s own internal thermal mass or things I don’t need to complete as quickly as possible.
E.g.: laptop, washing machine (clothes or dishes), dryer, refrigerator, hot water heater, hvac, etc.
It just seems so underdeveloped on the consumer side.
https://es.catapult.org.uk/project/consumer-insight-unlockin...