This step involves determining how much solar and energy is available at your location: your RESOURCE. It is important to know your available peak sun hours. Your solar energy peak hours can be looked up on these charts. Your solar and wind resources are the key to understanding the particular resources at your site. If you have low winds, but great solar access, this would lead you to a more Solar influenced system. If you have little direct exposure to the sun, but have higher wind averages, then Wind should be your emphasis. As in step 1 (determining your load) the next step is to find your average Solar Insolation (in average Peak Solar Hours/Day), and your Average Annual wind Speed. sitemap