How Much Energy Over The Lifespan Of A Solar Panel

A 1 kw solar panel produces about 1640 kwh year.

How much energy over the lifespan of a solar panel.

Still assuming zero maintenance and zero degradation for a 4000 investment i save 164 year. Solar panels offer homeowners a great way to reduce their carbon footprint. The return on investment is 4 and it takes 24 years to recover my investment. Over its guaranteed 25 year lifespan a sunpower panel will provide 60 percent more power than a conventional panel 4 and while our best in industry combined power and product warranty is for 25 years sunpower panels have an expected useful life of 40 years 5.

As a general solar industry rule of thumb solar panels last about 25 30 years. Most of the renowned solar manufacturers claim that their panels will continue to produce a minimum of 80 of their rated output throughout their lifespan or the period of warranty. However this doesn t mean that they stop producing electricity after 25 years it just means that energy production has declined by what manufacturers consider to be a significant amount. Luckily the lifespan of solar panels will allow you to produce energy for many years providing a great return on investment.

For instance a 300 watt panel must be capable of producing a minimum of least 240 watts till the warranty ends.