Installation of solar panels across the world continues to grow. In 2025, the world installed a record 664 GW of solar PV capacity, marking another record year for solar photovoltaics (PV). Companies are still making significant advances in solar technology. Tandem PV is a U.S.-based solar technology company developing high‑efficiency perovskite‑silicon tandem solar panels. Panels sold today are about 24% efficient. Tandem’s panels are 30.4% efficient. Their high-efficiency perovskite-silicon 4T (four-terminal) layer panel is compatible with most solar module designs. The company sees a clear path to increasing efficiency by 2% annually. Higher efficiency means panels generate more power while using the same area panel.