Solar Energy in your Home One of the most often questions is "If solar energy is really worth having a look at?". Not so long ago you could find solar panels in virtually every neighbourhood. And suddenly the boom stopped. The reason is tax credit. For many years tax credit offered by state and federal authorities were enough to make solar panels a great investment. Once the incentive program ended the industry suffered a serious blow, since the investment in solar panels became unprofitable. Luckily, recent motions in congress suggest that good times might be back as new legislation introduced tax refunds of up to 30% on new solar panels.