Solar has never been cheaper or more powerful than it is now. When I started in the solar industry 10 years ago, most solar panels only generated 180 Watts. New panels today generate 370 W at a small fraction of the cost. The efficiency has gone up so much they just about run-on moonlight!
With new inverter technology, every panel acts independently, unaffected by shade or lower performance from the panels around it. Advances in on-line monitoring allow the solar system to be controlled remotely, with automated alerts and easy display of power use patterns. These advances make it easier than ever to adjust your electricity use to match performance and see exactly what you are saving.