OutBack Power Technologies forum Manufacturers of charge controllers and heavy duty inverter-chargers.

SMA forum Manufacturers of grid-tie and off-grid inverters and accessories.

MidNite Solar forum Manufacturers of electrical enclosures specifically tailored to renewable energy and the new Classic charge controller.

Enphase Energy forum Manufacturers of grid-tie microinverters and accessories.

Solar Pro magazine Technical articles for photovoltaic and solar thermal installers.