HEATKEYS

Online PV design software for solar professionals that allows users to effortlessly design PV systems and create optimal panel layouts.

Photovoltaic applications, technologies and large-scale PV power plants

The U.S. DOE Energy Efficiency and Renewable Energy Web site provides information on energy efficiency and renewable energy technologies.

Renewable Energy World Online - Explore renewable energy news, jobs, events, companies, products, and more.

A solar forum dedicated to helping people with their solar panel questions by people who have solar panels and professionals in the solar industry.

The official website of SMA Solar Technology AG, the leading manufacturer of photovoltaic inverters and monitoring systems

ETAP electrical software is a power systems analysis solution that includes analytical modules and energy management load flow software, arc flash software, short circuit software for electrical engineering power system design power system simulation

SolarPro magazine is a high-quality, technical publication available by free subscription to qualifying solar industry professionals. Its editorial focus is on residential- and commercial-scale solar-electric and solar thermal system design and insta...

Reviews and free software downloads for Windows, Mac, Palm, Pocket PC, and Mobile Phones. The best programs and games. Buy software directly online.

Build It Solar will help people with Do It Yourself skills build solar projects that save money and reduce pollution. It is a "hands-on" site with detailed plans for solar projects including solar space heating, water heating, passive sola...

CivicSolar sells solar panels, solar inverters, charge controllers and others solar power products at the lowest wholesale price for grid tie, off grid,residential and commercial projects.

How to avoid shadows on solar collectors and protect your solar investments; how to explore the solar energy potential of your site and optimize your solar project according to your local architecture conditions and regional climate characteristics.