Questions tagged [energy-storage]

creating a buffer that allows energy to be collected and used at different times.

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4
votes
0answers
15 views

Why is the usage factor for utility-scale storage declining in the U.S.?

This chart from the U.S. Energy Information Agency was published last week in the article "EIA expands data on capacity and usage of power plants, electricity storage systems": The text of the ...
4
votes
2answers
141 views

Are there any good diy examples of home level STES or BTES

I just came across the concept of STES - Seasonal Thermal Energy Storage and more specifically BTES - Borehole Thermal Energy Storage. (Example project) I wondered if anyone had built a small scale ...
1
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1answer
153 views

Is it possible to harvest energy from the storm?

My idea of a device for harvesting energy from wind If used in reality, this device will harvest significant amounts of energy from wind, waves and storms. This not only solved the problem of energy ...
5
votes
1answer
207 views

Is Tesla Powerwall a good investment?

I'm trying to determine if investing in a couple of Tesla Powerwall units to store solar energy is a wise financial decision. My energy cost is $0.1649/kWh. The installed price of the two Powerwall ...
5
votes
3answers
157 views

Energy storage idea: Pumped hydroelectric storage in ocean using difference in salt content

Note: Updated the calculation, found an error. With that, the concept isn't economically viable any more. I wanted to share a concept for a possible cheap large scale energy storage concept that has ...
10
votes
5answers
10k views

Domestic flywheel energy storage: how close are we?

I've done some web searches, but I don't see anything very current on how close we are to having a home energy storage flywheel system that's comparable in price and performance to a battery system. ...
15
votes
3answers
3k views

What's the average efficiency of pumped hydroelectric energy storage facilities?

Pumped hydroelectric storage has, to date, been the most scalable way to store electricity (in this case, in the form of gravitational potential energy), allowing us to spread the time between when ...
12
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8answers
1k views

what alternatives are there to store solar energy besides a battery

besides batteries are there any viable options to store energy from solar panels for the home owner to be able to use the energy at night or when the sun does not shine. I realise there will be losses ...
16
votes
1answer
261 views

If I can create enough electricty from solar should I store and use it rather than feed back to the grid?

When we installed our solar PV system in 2010 there were several reasons it wasn't feasible at that time to store and use the power we were generating instead of feeding into the grid. The main ...