Japan Building Giant Battery Systems to Store Solar Power

Post by toomuchtodo » Wed, Jun 24, 2015, 11:47 PM UTC

seunosewa wrote: post #29

greglindahl wrote: post #25

Earlier quoted context omitted.

Which Tesla model? There are 2: the Powerwall for home use, and the Powerpack, for businesses. The Powerpack starts at 100kWh, and goes as big as you have money for. Initial reservations are mainly for the Powerpack. https://en.wikipedia.org/wiki/Tesla_Powerwall Grid storage that stabilizes a grid is much more valuable than storage of power to shift production to non-peak times.

Whats the difference between stabilizing a grid and storing power produced at non-peak times so you can use it at peak times?

One is much more profitable, because it requires much faster response times.

Post by icanhackit » Thu, Jun 25, 2015, 1:49 AM UTC

greglindahl wrote: post #25

Hermel wrote: post #13

That's 600 MWh for 257 million USD. Tesla's powerwall has 10 KWh for 3500 USD. Interestingly, that's about the same price point. Efficiency-wise, the centralized Japanese solution makes probably more sense for large centralized solar plants, whereas Tesla's model probably makes more sense for self-owned solar panels.

Which Tesla model? There are 2: the Powerwall for home use, and the Powerpack, for businesses. The Powerpack starts at 100kWh, and goes as big as you have money for. Initial reservations are mainly for the Powerpack. https://en.wikipedia.org/wiki/Tesla_Powerwall Grid storage that stabilizes a grid is much more valuable than storage of power to shift production to non-peak times.

Grid storage that stabilizes a grid [...]

Your comment made me think - what if a state-power or hacker group were able to make a large number of these energy storage units dump their energy back on the grid en mass? Would there be ways to protect the grid from being overloaded by a centralized energy store dumping its energy?

Re: Japan Building Giant Battery Systems to Store Solar Power

Re: Japan Building Giant Battery Systems to Store Solar Power