A typical asphalt shingle roof has a lifetime of 20-30 years. Home solar systems have useful lifetimes of 25+ years. If your roof’s lifetime is significantly less than the 25 year home solar system lifetime, you should consider replacing your roof before or in conjunction with the installation of a home solar system. This way you’ll avoid the significant expense of removing your home solar system to replace your roof. Loans to finance both projects are readily available and the savings that your home solar system generates will pay for some or all of your roof cost. If a new roof is recommended, we’ll include that as a separate line item in your estimate.
Electrical panels are only rated for a certain amount of electrical current. The primary source of current is from your power company. If you add a home solar system, electric current from that system also needs to be accounted for. If total current input from both the utility and home solar exceeds your electrical panel’s rating, you may need to upgrade your electrical panel.
Most homes have a 200 amp electrical panel and are able to accommodate the additional current from a typical home solar system. However, some older homes have 100 amp electrical panels that will either limit your home solar capacity, or require an upgrade of the electrical panel to a larger capacity. If we determine that you are likely to need to upgrade to your electrical panel, we will include that cost in your home solar system estimate.