What are solar panel efficiency ratings?

Solar panel efficiency ratings indicate how well solar panels convert sunlight into usable energy. The higher the efficiency, the better the energy conversion and electricity production, which saves you more money on your power bill.

Are solar panels more efficient?

Within those averages, you'll find solar panels with a range of efficiency ratings. It might not surprise you that you'll usually pay more for solar panels with greater efficiency. SunPower, one of the better-known solar panel brands, offers the most efficient and most expensive solar panels for homes at 22.8% efficiency.

How efficient are photovoltaic panels?

Due to the many advances in photovoltaic technology over recent years, the average panel conversion efficiency has increased from 15% to over 23%. This significant jump in efficiency resulted in the power rating of a standard-size panel increasing from 250W to over 450W.

How efficient are solar panels in 2024?

In 2024, the average efficiency is about 21.4%, which translates to 10% more electricity produced per panel. Within those averages, you'll find solar panels with a range of efficiency ratings. It might not surprise you that you'll usually pay more for solar panels with greater efficiency.

Are Panasonic solar panels efficient?

Panasonic no longer manufacturer their own solar panels range, but instead use a third party that still churns out some very efficient and impressive solar panels. Panasonic EverVolt solar panel range has an efficiency rating of 22.2%, along with an impressive power output of 410 watts.

How are solar panels rated?

The efficiency rating is calculated by dividing the module’s power rating by the total panel area under standard test conditions, typically measured at 1000W/m² of solar irradiance. Although no commercially available solar panel is 100% efficient, advancements in solar technology continue to push the boundaries of what’s possible.