Solar (photovoltaic) panel prices vs. cumulative capacity

This data is expressed in US dollars per Watt, adjusted for inflation. Cumulative installed solar capacity is measured in megawatts. This represents the 'learning curve'for solar panels.

Cumulative installed solar PV capacity1 MW10 MW100 MW1,000 MW10,000 MW100,000 MWSolarPVmodulecost1975197519761976197719771978197819791979198019801981198119821982198319831984198419861986198819881990199019921992199519951998199820012001200320032005200520072007200820082009200920102010201120112013201320152015WorldWorld19752021

Source: Nemet (2009); Farmer & Lafond (2016); International Renewable Energy Agency (IRENA)

Note: Data is expressed in constant 2021 US$ per Watt.