Storing energy is actually very difficult.In general there are only a limited number of ways to do this:Store it chemically (battery) - limited capacity and can be costly.Store it as kinetic energy (eg. spin up a large weighted flywheel.)Store it as heat energy (heat up a storage heater full of fire bricks)Store it as potential energy (ICENG's water system)120Kw is a lot of electricity to store, in general in the Uk you sell the energy to your supplier at a premium rate and so turn the energy as produced into cash for use later - Current rates show you can get about 0.41p per KWh exported and 0.71p per Kwh for all power generated.These rates are paid for by the energy suppliers levying a £1 charge against all electricity bills.My local council expects to make around £110,000,000 over 25 years by setting up a 900 acre solar park.From 1 Mw you can expect to get a ROI of 17% or around £250,000 per year.
Select as Best AnswerUndo Best Answer
I think you mean 120KW = kilowatts but then it could be kb = 120 kibbles :-) Most people use big batteries to store solar electricity. Some large installations pump water to a high reservoir And use a water turbine generator at night. A .