As for your marketing ideas for grid-tied systems.....Don't waste your energy. Do a little R&D instead (Rob & Duplicate). Check out www.altairenergy.com. These guys have been at it for some time now. I'm sure they'll be happy to send a prospective customer some really nice brochures. Check out their "HomeSafe" systems. Last year I subcontracted work from them as well as competed with them. I've decided this year to let them have the suburban market around here. I don't have the thousands of dollars for marketing that they do. I'd rather do stand-alones anyway.