Jul 20, 2021 · The efficiency of LG panels varies, depending on the model. The standard LG panel has 18.6% efficiency, while the top NeON module has 22% efficiency. This range is suitable for many residential solar systems. LG’s best-selling panel, the 345W NeON 2 Black Solar Panel, has 20% efficiency. Its counterpart, the 365W NeON 2, has a 21% efficiency.. Solar Panels. LG Solar Panels. Products. Related Links. Solar goes a long way in reducing water pollution. 72% of water pollution comes from the massive amounts of water used as cooling in gas, oil, coal and nuclear power plants. Though solar manufacturing does use water, the amount is infinitesimal in comparison.