Solar Array Maintenance & Guarantees
You own all of the equipment from day 1 and it will continue to generate electricity indefinitely. All that happens after 20 years is that the government tariff ends. The system will continue to remain productive as long as it is maintained properly.
As previously mentioned the AC inverter may need changing after 20 years or so. Panels rarely fail but by simply monitoring the system from the online interface you can detect any defects early and have them replaced. The panels we use carry a 25 year manufacturer’s warranty.
There is no need to remove the panels after 25 years as the panels will continue producing power. In the case of a roof mounted system, if for any reason you did want to remove the panels then the small fixing plates would stay in place and would be watertight as they are sealed with EPDM.