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by greggyb 4088 days ago
> This is, of course, speculative. We don’t know if the study findings scale to the whole of the United States. It’s back of the envelope math. Atop that, the study itself is an analysis, which is not the same value as experience.

Hence my question. Do we actually see any utilities making steps in this direction?
2 comments
nl 4087 days ago
There are a number of pump-solar energy storage plants already in use, including some in the US. See http://en.m.wikipedia.org/wiki/Pumped-storage_hydroelectrici... for details.

Its not as sexy as new battery tech, but it works really well and is a very attractive option in some locations.

Outside pump solar, California is planning 1.3 GW storage by 2020. http://en.m.wikipedia.org/wiki/United_States_Department_of_E... will show you the status of projects.

http://en.m.wikipedia.org/wiki/List_of_energy_storage_projec... is an interesting list of projects, including battery based, but also things like flywheels.

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beat 4088 days ago
They're openly talking about it. Let's look again in ten years, given the lead time, conservatism, and regulatory concerns at this scale. "Fail fast" isn't really an option for the grid the way it is for software startups.
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greggyb 4088 days ago
I realize I may have come across somewhat pugnaciously above. I am honestly curious about this, though.

What utilities/where are talking about this right now? What level of talk are we talking about? Public statements? Designs? Construction permits in the works?

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aharonovich 4087 days ago
My research has shown that while many utilities have purchased storage (SCE 250 mW in 2014[1]) it's still very experimental and they do it mostly for research purposes or publicity or because the regulator makes them. However, since the electricity business is slow moving, low margin and very capital intensive it's clear why everyone is very interested in any new potentially disruptive technology. Imagine owning a peaker power plant that you've paid for in full using debt and generates a little profit each year under the condition that it can be amortized for 15 more years - if someone built the equivalent of a peaker plant made of batteries, even in 2025, you'd still go under. Scary.

[1] http://www.greentechmedia.com/articles/read/the-top-10-energ...

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