Understanding Solar Technologies for Your Home

Most solar panels come with a 25-year warranty and can actually continue producing electricity for 30 years or more. While efficiency may gradually decrease over time, quality panels from reputable manufacturers typically maintain about 80-85% of their original output at the 25-year mark. Regular maintenance can help maximize the lifespan and performance of your solar system.

Yes, solar panels can still generate electricity on cloudy days, though at reduced efficiency (typically 10-25% of their rated output). Solar panels capture both direct and indirect (diffused) sunlight, so even overcast conditions allow for some energy production. Additionally, many areas with cloudy weather still receive enough annual sunlight to make solar a viable and cost-effective energy solution.

Panel efficiency refers to how well a panel converts sunlight into electricity under ideal laboratory conditions (standard test conditions). Performance, on the other hand, refers to the actual real-world energy output over time, which can be affected by temperature, shading, dirt, panel orientation, and weather conditions. A highly efficient panel in the lab may not always perform better than a moderately efficient one in real-world conditions, making both metrics important to consider.