Trends in solar PV module efficiency

From 2010 to 2019, the efficiency of modules installed in the United States increased significantly: – 14.4% to 19.4% for mono c-Si – 13.7% to 17.4% for multi c-Si – 11.0% to 17.4% for CdTe. • Based on preliminary data for Q1 2020, the average efficiency of mono c-Si and CdTe panels installed in the United States have continued to increase, while multi c-Si has begun to lag behind.

Source: NREL annual report