Re:Electric Ship Batteries Promise Compact, Cooler Power
by wtch98 on Friday November 13, 2026 @04:01AM
(#50480418)
a couple of years ago it was $2m to store the same energy in the same way.
Excluding the car and heating, it's $40k for battery to store enough power to run my house for a week. Including heating at a 3:1 ratio for a heat pump compared with gas on the coldest week of the last year and it's $80k. That's less than 20% of the cost of the house. Throw in $10k of solar (about 35kWp) and even this far north - on the coldest days it tends to be clear skies and that would generate enough to recharge the battery without even touching the grid. The 35kWp wouldn't fit on the roof, but certainly would fit in a nearby field for basically zero cost for the land.
Excluding the car and heating, it's $40k for battery to store enough power to run my house for a week. Including heating at a 3:1 ratio for a heat pump compared with gas on the coldest week of the last year and it's $80k. That's less than 20% of the cost of the house. Throw in $10k of solar (about 35kWp) and even this far north - on the coldest days it tends to be clear skies and that would generate enough to recharge the battery without even touching the grid. The 35kWp wouldn't fit on the roof, but certainly would fit in a nearby field for basically zero cost for the land.