Several years ago, our local EMC cooperative started offering 'community solar'. We decided to buy-in to 2 'blocks' of solar power. That project went on-line just a little over 2 years ago. Since then, I've been keeping close track of usage and offset. In that time, about 30% of our power has been offset by solar. The cost vs. cost savings has been right at even! So, for essentially no extra cost, we are getting some solar power. As new projects become available, I'll look into adding more blocks, hopefully to get it up to at least 70%.. The advantage of community solar is that I really have no direct investment in equipment; everything is maintained by the EMC. And since power production and usage are often not coincident, we don't have to consider storage; distribution of power production is also handled by the EMC. I had considered roof-top solar, but our house is surrounded by tall trees that give us great shade in the mornings and evenings. In order to have efficient solar, we would have to remove many those which would increase our summer power demands as well as remove the carbon-sink benefits of trees! So community solar has been (I think) a better option. I just wish more power companies would consider this..