Accumulators + Solar is the easy solution to an energy problem that has many potential solutions. There is no point using those other options while accumulators exist. Eliminating accumulators means the player loses the easy solution, and has to instead utilize the more difficult choices for their energy. Thus it would INCREASE the amount of gameplay.A "one size fits all solution" that eliminates a large amount of gameplay, like accumulators and solar in combination, is a bad solution.
Checkmate.