subject: History of Solar Power [print this page] Its clear to see from this history that as solar panels have gradually decreased in cost their adoption has rapidly increased, so much so that they are now used in over one hundred countries around the world. Many home owners now harness the power of the sun to run their homes and save money. In another fifty years time could it be possible that every home in developed countries will be using solar PV panels to generate their electricity, well it doesn't seem that far off that's for sure.