See how to test your solar panel for open voltage and current reading. Results will vary depending on sun strength, time of day, angle of light and temperature.
If your roof cannot to support the weight of photo-voltaic solar panels, you can save a lot of money by investing in thin film solar panels. These panels are very light and flexible, which makes the installation much easier and affordable. Their higher price is also justified by their efficiency.
Decide whether you want to be on or off the power grid. Many people look forward to getting "off the grid" when they switch to solar power, however this may not be the best choice. Staying on your power grid means that when you have poor sunlight conditions you have the ability to purchase additional power when you need it. As a bonus, when you produce more power than you use, you can sell the excess back to the utilities.