IRENA presents solar photovoltaic module prices for a number of different technologies. Here we use the average yearly price for technologies 'Thin film a-Si/u-Si or Global Price Index (from Q4 2013)'. This data is expressed in US dollars per watt, adjusted for inflation. . Cost-Curve Compression: Solar module prices in Latin America have declined by 15% over the past 12 months, driven by global supply chain normalization. As costs approach parity with traditional energy sources, demand inflection becomes more probable within 2-3 years. IRENA (2025); Nemet. . federal solar tax credit now available. This is lower than the average price of residential solar power systems across the United S e for years: 2020, 2021, 2022 and 2023. The report also forecasts the Venezuela Solar Energy Market size for years that the solar panel cost can increase. Also, the. .