After the first year of use, the output of both panels will have decreased by 2%, which is in line with or better than most other panels. However, for the remaining life of the panels (from years 2 to 25), there is a difference between the REC’s and LG’s. The REC panels’ output will decline by 0.25% per year, while the LG panels will decline by 0.3% per year. While this may seem like a very small difference, at the end of the 25 years, the REC panels’ output will be 92% versus 90.8% for LG. This produces 1.2% more energy over the life of the system, giving a strong advantage for REC.
Both of these figures are still far above industry standard, as most panels final production ends up being between 80% and 87%.