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I don't think this makes sense. Rail freight is about 20x more expensive than transmission at current battery densities. Transmission: $41.50 per MWh per 1,000
by laurencerowe 10mo ago
I don't think this makes sense. Rail freight is about 20x more expensive than transmission at current battery densities.
Transmission: $41.50 per MWh per 1,000 miles. https://docs.nrel.gov/docs/fy22osti/81662.pdf https://docs.nrel.gov/docs/fy22osti/81662.pdf
Rail freight: $160 / ton per 1,000 miles. At 220 Wh/kg a ton of batteries is 200kWh. So rail costs $800 per MWh per 1,000 miles without considering the cost of the batteries themselves.
- adrianN 10mo agoYou probably don’t want to use regular batteries for that. I’d go with shipping energy as aluminum or something like that and use aluminum-air batteries. But regular hvdc seems really hard to beat with shipping of any kind.