The author recounts his experience with using various Alternative Energy systems for powering his home. https://survivalblog.com/mobile-alternative-energy-experiences-captain-steve/ Pay attention to the batteries used and changes made as each type failed. Also note the comment about the cost of the various components going down, right now (Jan. 2019). You can wait and hope that they go down some more, but you risk any sudden change in the market with may drive prices higher.