Find a reputable company. With the rapidly rising popularity of solar energy, new companies are springing up left and right to take advantage. A solar energy installation is a big purchase that should last you many years. When shopping for your system, look for a company that you can be confident will still be around ten or even twenty years from now.
How dense your solar panels are will determine their efficiency. Getting high density solar panels may cost you quite a bit, but after a while they'll pay for themselves because they produce more power. Before you select your solar panels, you should consider panel density.
http://300mpg.org/?p=3896 I rig up a 400 watt, 48V solar panel to charge a 1970’s electric car. This is direct charging, no use of an inverter, AC power, wall …
If you're thinking about installing solar panels to generate your own electricity, make sure that the roof you'll be installing them on gets plenty of good sunlight. Good sunlight occurs between 9am and 3pm. You'll generate the most electricity if your roof receives full, exposed sunlight between those hours every day.