mekReactorHandler

local turbine = peripheral.wrap("right")
local maxEnergy = turbine.getEnergyCapacity()

function firstCheck()
    energy = turbine.getEnergy()
    enrgPerc = energy * 100 / maxEnergy
    if(enrgPerc < 40) then
        redstone.setOutput("left", not redstone.getOutput("left"))
    end
end

firstCheck()
while true do
    energy = turbine.getEnergy()
    enrgPerc = energy * 100 / maxEnergy
    if(enrgPerc > 40) then
        redstone.setOutput("left", not redstone.getOutput())
    end
end