solar panel efficiency
The efficiency of solar panels varies greatly. New technology is capable of generating 60% more energy than old solar panel technology so understanding the difference in the efficiency of solar panels is important when purchasing solar panels for your home.
Be wary of distributers trying to offload old solar panels, these old solar panels are extremely inefficient. Meaning the carbon footprint from producing them minus the benefit from the energy produces means they would take hundreds of years to justify them being produced in the first place.