The key metrics of solar panel efficiency ratings include conversion efficiency, temperature coefficient, and power output. High-efficiency panels typically have ratings between 15% and 22%. Emerging technologies, such as. The solar energy conversion rate refers to the percentage of sunlight that a solar panel or solar energy system can effectively transform into usable electricity. Efficiency, in combination with latitude and weather, determine the energy output of a solar system. Concentrated. After the completion of a photovoltaic power station, estimating its power generation is a very important and necessary task, which usually requires calculation and analysis based on various factors such as the local annual solar radiation and the power generation efficiency of the Guangfa power.