Panels will cost in the range of 300-600 dollars for about 00 watts on average ( enough for one large lightbulb to run a few hours a day). The rest of the system needed will cost $2500-$4000. That is for the equipment. Cost for Installation?? Figure about 0 year life on equipment. It will probably never pay back investment, but will cut power usage. You can reduce power usage much more cost effectively buy simply conserving (Hot water temp. down, CFE bulbs, Better insulation, Better windows, Heat/Air a little colder/hotter, Attic ventilation, Geo Thermal heating/colling system). All of these measures will pay back sooner and save power usage. Solar will never pay back without major subsidies from the taxpayers. Particularly if in an area that has many cloudy days. Check it out. The calculations are basic and the facts are available if you really want them. Don't believe any salesmen or Environmentalists. They don't want you to know the facts.
Mitsubishi solar panels are sold in pairs. I was in the market this week, checking on solar panels to install in my own house / workshop. Here's the price list I got from online and wholesale dealers for a pair of Mitsubishi panels: * Model MF20EC4 (20 watts) -- $590 * Model MF25UE5N (25 watts) -- $60 * Model MF75MF5 (75 watts) -- $799 * Model MF80UD4 (80 watts) -- $820 * Model MF85UD5 (85 watts) -- $850 BP Solar, PowerUp Solar GE Solar too have their own panels with a low-to-high price range. Go for BP solar panels as they're more affordable for home installation and good value for money.