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11 votes

Wind farms that wind up in the wind, and then unwind producing energy when the wind is still

The storage part of the RES systems is probably the biggest challenge today. There are several ways to store energy. By far the most used way today is Pumped storage hydroelecticity systems. ...
NMech's user avatar
  • 24.3k
6 votes

Wind farms that wind up in the wind, and then unwind producing energy when the wind is still

You've described energy storage, or physical batteries. You wouldn't need half of each wind farm dedicated to this; you would simply store the excess, beyond what is used at a given time. It's not ...
RC_23's user avatar
  • 781
6 votes

Wind farms that wind up in the wind, and then unwind producing energy when the wind is still

I suppose what you had in mind with your question was something like, every single turbine winches up a heavy weight to its tower while surplus energy is available, then lowers it again to recuperate ...
leftaroundabout's user avatar
5 votes

Wind farms that wind up in the wind, and then unwind producing energy when the wind is still

You're describing a Gravity Battery. While the other answers have pointed out that water is the most common lifted weight, EnergyVault is a Swiss company that's basically lifting concrete blocks. The ...
user121330's user avatar
4 votes

Wind farms that wind up in the wind, and then unwind producing energy when the wind is still

As other answers have pointed out, the key to a system that utilizes renewable energy sources with an energy storage backup envisioned by the question is the ability to store large amounts of energy ...
njuffa's user avatar
  • 141
2 votes
Accepted

Can we create electricity through an hourglass?

The initial potential energy is given by $$E = mgh$$ where $m$ = mass of the sand, $g$ is the acceleration due to gravity and $h$ is the height above the turbine. All the potential energy between the ...
Transistor's user avatar
  • 10.8k
1 vote

Comparing accelerated vs constant motion; inspired by real life example. Is reducing mass the way to save energy in vehicle use?

Every time you brake you throw away energy, the difference in 1/2mv^2 from moving and being stopped. Internal combustion engines are also less efficiency accelerating, but the primary loss is that ...
Tiger Guy's user avatar
  • 6,871
1 vote

Wind farms that wind up in the wind, and then unwind producing energy when the wind is still

Energy storage is a tricky challenge. Batteries are one, but the cost of even city scale single day's storage is gargantuan. Others have proposed using renewable energy to generate hydrogen or in-situ ...
LazyReader's user avatar
1 vote

Can we create electricity through an hourglass?

Of course this will work, you are putting energy into the hourglass to move the sand up. This is essentially how hydropower works, we let the sun do the work of evaporating water and raining it ...
Tiger Guy's user avatar
  • 6,871
1 vote

Where are the energy losses here?

Siphons don't work uphill. Any system that claims to be self-sustaining is not only wrong, but is prima facie wrong. All you have to do is figure out where.
Tiger Guy's user avatar
  • 6,871
1 vote

Can I be mostly dependent on solar and batteries?

My son has a tiny house, no grid connection. 2 panels, 2 gel batteries, 24V system, 500W inverter to run solar water heating, 2kW inverter for occasional use. Care required in winter as sun is lower ...
Solar Mike's user avatar
  • 15.7k
1 vote

Can I be mostly dependent on solar and batteries?

Neither plan is necessary. In my locale many people are full solar as they have no access to mains lines. It's more about the size of your battery bank than the number of panels. One chap has just two ...
Kilisi's user avatar
  • 121

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