4 ms·

ya till solar hits a tipping point like it is in California right now. Then the utilities want to set a flat rate based on wages to stay connected to the grid.

ya till solar hits a tipping point like it is in California right now. Then the utilities want to set a flat rate based on wages to stay connected to the grid. This will 100% work but we also need battery tech to hit like 250-300 a kwh for storage is my magic number to get a 40-50kwh backup and detach from the grid.

krasin 3y ago
> we also need battery tech to hit like 250-300 a kwh for storage is my magic number to get a 40-50kwh backup and detach from the grid. Here you go, a 30kWh 48V battery for $9k ($300/kWh): https://signaturesolar.com/eg4-lifepower4-lithium-batteries-kit-30-72kwh-6-server-rack-batteries-with-free-pre-assembled-enclosed-rack-with-door-wheels-busbar-covers/ https://signaturesolar.com/eg4-lifepower4-lithium-batteries-...
- hijinks 3y ago
  wow thanks.. looks perfect
  - epistasis 3y ago
    The storage market has been revolutionized in the past few years thanks to LFP chemistries, and it's only going to get better soon. There are massive new US production facilities coming online, and Bloomberg is estimating that US cell costs will be $83/kWh, just a few dollars more than Chinese costs. Add in the IRA tax credits, and the cost will be less than $50/kWh. Packs will be more expensive than cells, of course, but the future looks very rosy. Could see that pack at half its current price, even in quantities as small as 50kWh. I always chuckle when I encounter the sweet summer children that think that battery tech is stagnant... (Subscription required) https://www.bnef.com/shorts/16235?e=Insight%20Alert:sailthru https://www.bnef.com/shorts/16235?e=Insight%20Alert:sailthru
    - hijinks 3y ago
      I guess the idea is just to wait a few years then.
    - jandrese 3y ago
      It's an extremely common argument from renewable opponents that storage is just too expensive and will never be economical. If you manage to get them to write a number down it's always something like $500-$1000/kWh because that's what some old fossil fuel study from the 90s used.

krasin 3y ago

> we also need battery tech to hit like 250-300 a kwh for storage is my magic number to get a 40-50kwh backup and detach from the grid. Here you go, a 30kWh 48V battery for $9k ($300/kWh): https://signaturesolar.com/eg4-lifepower4-lithium-batteries-kit-30-72kwh-6-server-rack-batteries-with-free-pre-assembled-enclosed-rack-with-door-wheels-busbar-covers/ https://signaturesolar.com/eg4-lifepower4-lithium-batteries-...

hijinks 3y ago
wow thanks.. looks perfect
- epistasis 3y ago
  The storage market has been revolutionized in the past few years thanks to LFP chemistries, and it's only going to get better soon. There are massive new US production facilities coming online, and Bloomberg is estimating that US cell costs will be $83/kWh, just a few dollars more than Chinese costs. Add in the IRA tax credits, and the cost will be less than $50/kWh. Packs will be more expensive than cells, of course, but the future looks very rosy. Could see that pack at half its current price, even in quantities as small as 50kWh. I always chuckle when I encounter the sweet summer children that think that battery tech is stagnant... (Subscription required) https://www.bnef.com/shorts/16235?e=Insight%20Alert:sailthru https://www.bnef.com/shorts/16235?e=Insight%20Alert:sailthru
  - hijinks 3y ago
    I guess the idea is just to wait a few years then.
  - jandrese 3y ago
    It's an extremely common argument from renewable opponents that storage is just too expensive and will never be economical. If you manage to get them to write a number down it's always something like $500-$1000/kWh because that's what some old fossil fuel study from the 90s used.