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Understanding Solar Energy

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261 points chmaynard | 3 comments | 20 Mar 25 12:09 UTC | HN request time: 0.557s | source
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sanj ◴[20 Mar 25 15:40 UTC] No.43424802[source]▶
One thing I haven't seen much coverage on is how to tap into the giant batteries we're driving around in our electric vehicles. These are much bigger than what's currently being deployed in houses.

The V2H standards are just now coming online: https://electrek.co/2025/02/21/nema-bidirectional-ev-chargin...

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1. raphaelj ◴[20 Mar 25 16:08 UTC] No.43425113[source]▶
There might not even be any need for V2G or V2H.

Just charging your car when the demand is low is probably enough to drastically reduce the overall cost of the system. And this has basically no impact on the battery lifespan.

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2. kieranmaine ◴[20 Mar 25 16:45 UTC] No.43425580[source]▶
A trial in the UK resulted in customers earning up to £725/year [1]. With increased renewables on the grid leading to increased flutucations in the wholesale price of electricity, providing V2G/V2H will further reduce a customer's electricity bill on top of the savings offered by smart charging eg. Charge Anytime Tariff is 7p per kWh for EV charging [2] vs 27p kWh average Apr - Jun 2025 [3].

1. https://www.kaluza.com/case-studies/case-study-kaluza-enable...

2. https://www.ovoenergy.com/electric-cars/charge-anytime

3. https://www.nimblefins.co.uk/average-cost-electricity-kwh-uk

3. zekrioca ◴[20 Mar 25 17:23 UTC] No.43426108[source]▶
High demand is not the sole reason for outages.