The Solar powered card states "at the end of your turn gain 1 energy if you have no energy". Taken as an exact words statement this would mean "if you don't have an energy cube you get one". But the spirit of the rule would seem to mean If you had no energy Dice after your third role. Which is it?
Also, If it is the first literal meaning what if you have the Monster batteries card with energy on it but no energy in your reserve?
Also, If it is the first literal meaning what if you have the Monster batteries card with energy on it but no energy in your reserve?