Such As, it is possible to choose to purchase the solar system and spend the associated fee in installments inside a period of time. In Washington, the payback interval is about 7 – nine years. Regional Rebates and Incentives: Some community utilities and municipalities offer extra rebates and incentives for https://www.4shared.com/office/5B0T2fX_jq/Reliable_Solar_Solutions_in_WA.html