U.S. battery storage capacity to increase significantly
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Re: U.S. battery storage capacity to increase significantly
#2The article doesn’t make this clear so I am assuming those numbers represent GWh of storage.
To put this in context Bath County is a reservoir that has 24GWh of storage.
https://en.m.wikipedia.org/wiki/Bath_County_Pumped_Storage_S...
Re: U.S. battery storage capacity to increase significantly
#3> Developers and power plant owners plan to significantly increase utility-scale battery storage capacity in the United States over the next three years, reaching 30.0 gigawatts (GW) by the end of 2025
Can someone explain how/why they are measuring storage capacity in watts?
Re: U.S. battery storage capacity to increase significantly
#4The article doesn’t make this clear so I am assuming those numbers represent GWh of storage. To put this in context Bath County is a reservoir that has 24GWh of storage. https://en.m.wikipedia.org/wiki/Bath_County_Pumped_Storage_S...
Be advised, if one travels to witness this place, (Bath County Pumped Storage Facility) one will likely need to be ready to trespass to get a good look unless you have a prearranged tour. The owners have a lot of money for signs and fencing. But, it's worth it, the grandeur is jaw dropping.
There's also little to no cell service due to NRQZ. There's a nice campground at the base of the lower dam.
There's actually a lot of pumped energy storage up and down the east coast of the US to take advantage of things like nuclear power arbitrage. (Always-on nuclear power is cheap at night, while on-demand hydro power has a premium during the day) Many manmade power storage lakes doubled as real estate development schemes which made them a slam dunk economically for the power company. For example, my relative has a house on Lake Keowee in South Carolina which has a nuclear power station nestled amongst multimillion dollar lakehouses, and is interlinked to both upper and lower reservoirs for energy storage and heat dissipation.
One interesting point is I doubt such projects could be replicated at all today in USA. Batteries are the way forward.
Re: U.S. battery storage capacity to increase significantly
#5The article doesn’t make this clear so I am assuming those numbers represent GWh of storage. To put this in context Bath County is a reservoir that has 24GWh of storage. https://en.m.wikipedia.org/wiki/Bath_County_Pumped_Storage_S...
Context for your context: Bath County resevoir is descrbed as "largest battery in the world", and cost the equivilent of 4 billion dollars (in 2021 $), occupies 265 acres of land, and has a capacity of around 14,000,000 m3 of water.
I'm curious to see how the costs compare. My understanding is pumped hydro storage gets cheaper at scale. If my math is correct, 24GWH of storage at $4 billion dollars^ is $167 per kilowatt hour. What do these batteries cost to install at scale at the moment? What are they predicted to cost in the next 5, or 10 years?
^ does the 4 billion include the cost of land? Probably not important, even at an "expensive" 200k an acre, that's only 50ish million extra in costs.
Re: U.S. battery storage capacity to increase significantly
#6The article doesn’t make this clear so I am assuming those numbers represent GWh of storage. To put this in context Bath County is a reservoir that has 24GWh of storage. https://en.m.wikipedia.org/wiki/Bath_County_Pumped_Storage_S...
The article is perfectly clear that all the values are watts (MW, GW).
It's really silly to assume that the literal Energy Information Administration doesn't know the difference between the units of watts and watt-hours.
Battery power capacity is watts.
Battery energy capacity is watt-hours.
This article is talking about power capacity.
Re: U.S. battery storage capacity to increase significantly
#7The article doesn’t make this clear so I am assuming those numbers represent GWh of storage. To put this in context Bath County is a reservoir that has 24GWh of storage. https://en.m.wikipedia.org/wiki/Bath_County_Pumped_Storage_S...
chart says gigawatts
Re: U.S. battery storage capacity to increase significantly
#8> Developers and power plant owners plan to significantly increase utility-scale battery storage capacity in the United States over the next three years, reaching 30.0 gigawatts (GW) by the end of 2025 Can someone explain how/why they are measuring storage capacity in watts?
I came here to complain about the same thing. Don't they have anybody who can proofread these diagrams and texts? For some reason, electric power related articles are super prone to people getting units wrong.
Re: U.S. battery storage capacity to increase significantly
#9> Developers and power plant owners plan to significantly increase utility-scale battery storage capacity in the United States over the next three years, reaching 30.0 gigawatts (GW) by the end of 2025 Can someone explain how/why they are measuring storage capacity in watts?
Because this is for utility companies where the value of the rate of discharge might be even more important than the energy capacity?
A quick look at their site shows "battery power capacity" is measured in watts, whereas "battery energy capacity" is measured in watt-hours.
Re: U.S. battery storage capacity to increase significantly
#10> Developers and power plant owners plan to significantly increase utility-scale battery storage capacity in the United States over the next three years, reaching 30.0 gigawatts (GW) by the end of 2025 Can someone explain how/why they are measuring storage capacity in watts?
What should it be measured in?