Try this if you want to energise the player character as fast as possible without too much crystal spending
Accumulator next to 2 MK3 fusion reactors that you give 20-30 crystals only or 100 if you want to max out the energy on your character, permanately running mk2 fusion next to them, full solar panel mk3 on top and full wind turbines mk3 below (if you can afford to run them constantly you can fill the bottom with mk2 fusion reactors below or even on top as well but thats a bit overkill since you already go from 0 to max in a few seconds).
Be sure to stand between the MK3 fusion reactor and the accumulator to gain the full energy energy from both at the same time for an even faster gain. When big enough stand exactly on top of the accumulator to gain the full power from all 3 sources at the same time.
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