Solar energy is clean, efficient, sustainable?and expensive. Or is it? Many homeowners simply assume that the cost of solar panels is out of their reach, but in reality, the technology is quickly becoming attainable for the middle class. Rather than leasing panels from one of those home solar startups (and letting them reap the financial benefits), why not join the thousands who are doing it themselves? In Solar Rooftop DIY, sustainable energy expert Mike Sullivan offers five design plans?ranging from a few simple panels to a complex, roof-covering array?for building a rooftop PV energy system for any home.