Gravity Storage Operation

Every day, the sun rises and a large PV field produces energy. A part of the energy is used, to pump water below the piston of the Gravity Storage system. During the night, the piston pressurizes water through a turbine and produces sufficient energy to power a large city.

[fss]

nice design, that's a shame youtube never suggest content like yours to people.

[davidallyn]

oh I love this - even if it was a heavier fluid than water and only raised a few inches. I could imagine a store and parking lot all on a table being raised an lowered a meter over the course of a day/night.

[Fire_Tearss]

Could you have something like this but the mass is hallow and is raised by the high tide in the ocean, at high tide the weigh gets held, then at low tide the weight is released and as it falls it generates energy? You could make it drop farther if you could have a hallow out area to drain water from at low tide, then let water in at high tide to raise it again. Not sure how hard it would be to displace water in the ocean

[car]

Let's do some calculations. Lifting 1 cubic meter of water (1 ton) let's say 10m requires 100, 000 joules (100Kjoule). Running a 1000w light bulb for 1 hour (1KWhour) requires 1000Wat x 3600 sec = 3.6million joules. So just to light up 10 X 100W light bulbs for a single hour you will need to lift 36 cubic meter (36 tons) of water to a height of 10m. How would this power a large city?

[famkis]

Nach wie vor revolutionär, und revolutionär einfach. Interessant allerdings, wie schnell auch Akkus in den Terawattstundenbereich vorgedrungen sind:
Studie: "Gut 1 Terawattstunde neue Batterie-Speicher bis 2030, Europa-Prognose verdoppelt "
(via Teslamag)

[Archin-dnbp]

it’s better to simply pump water into a high-set tank and then rotate the turbine with a waterfall

[movaxh]

Efficiency? Doubt it is better than pumped hydro storage. Not to mention you need to deal with variable pressure at turbines here.

[stephenho]

Some major flaws must be corrected before it will make business sense. (1) excavating ground below is more expensive than building up. (2) the seal that big is impossible for such a weight, (3) what material is the cheapest for that piston? dirty of water, otherwise it is too expensive, amount other things.

[andrewbrass]

Well, today I learned a new thing about how we might store energy. I learned that this method will never be used at all, ever. So now I can concentrate on ones that might.
Pumped hydro can do this now, and for installation costs a tiny fraction.
Goodbye for ever.

[mauricioweber]

Just wish a little sound and data. The huge “pistón” seems to be a challenge but not too high tech and while pushing water back up seems to lower it’s efficiency, doesn’t it?

[yourma-uhum]

Why not just let the weight of the water push itself through a generator and fall into the giant hole you've built and then pump it out during times of excess energy?

[bionikmitwolfgangmartin]

Hatte eben im Deutschlandradio wieder einen positiven Bericht gelesenund im Kontext auf Facebook geteilt #puiuri

[Aabz]

At what power can the storage system provide electricity?

[fss]

btw, how did you do these animations?

[nicklaich]

They get water up, to put the weight down??? Man, this is so stupid. I'd rather believe there are upper and lower separate sections in the water tank.