Unlike the electricity you purchase monthly from a utility, PV power requires a high initial investment. This means that buying a PV system is like paying years of electric bills up front. Your monthly electric bills will go down, but the initial expense of PV may be significant. But with the current State incentives up to 35% of investment and Federal Incentives 30% and MARC depreciation made solar power very lucrative and the rate of returns are very high compared to any other investment in the current economy.