The Tesla Gigafactory 2 is a photovoltaic (PV) cell factory, leased by Tesla subsidiary SolarCity in Buffalo, New York. The factory, owned by the state of New York, was built on a remediated brownfield site from a former steel mill. Construction on the factory started in 2014 and was completed in 2016–17. In an interview in 2016, Elon Musk stated that the Buffalo gigafactory (Gigafactory 2) could potentially produce up to 10 gigawatts (GW) per year as a result of the merger, a drastic increase from the initial estimate of 1 GW. It is currently anticipated that the factory will reach 2 GW before this target.
Source: Wikipedia