Very little, if any. There are solar systems installed decades ago that are still operating today. Solar panels have no moving parts and therefore rarely stop working. Washing modules in April or May is recommended to maximize production during the long sunny days of...
Allterra provides a 10 year workmanship warranty and a free year of service to ensure your system gets up and running with no issues or hassle. In addition, the panels and inverters come with 25 year warranties on production and if they are defective, Allterra is paid...
In an effort to create maximum peace of mind and differentiate ourselves from the competition, Allterra offers a First Year Guarantee for all service needs. Click here to learn more.
