In 2019, U.S. shipments of solar photovoltaic (PV) modules, also referred to as solar panels, reached a record-high 16.4 million kilowatts (kW), 2.9 million kW more than the previous record of 13.5 million kW set in 2016. Solar PV module shipments include imports, exports, and modules produced and sold domestically, but they exclude modules shipped for resale. These shipments have steadily increased since 2006, driven by significant price declines and policy incentives that encourage solar PV installation. U.S. PV shipments declined in 2017 and 2018 when policy reforms and import tariffs went into effect.