EIA projects that PV's growth in 2023 (27 GWac) and 2024 (36 GWac) will continue in 2025 (39 GWac) and remain at similar levels in 2026 (36 GWac). In 2024, 24 states and territories generated more than 5% of their electricity from solar, with California leading the way at.
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Solar module prices in 2025 have stabilized after years of dramatic fluctuations, with global wholesale prices ranging from $0. 28 per watt depending on technology, origin, and regional market conditions.
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As of 2025, the global average cost for a 1 kW residential solar system is around $1,200 to $1,500 USD, depending on the region and quality of components. This includes basic panels, inverter, mounting system, and standard labor.
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TL;DR – There are actually two “120 % rules” in solar. A utility sizing cap that limits how much PV you can connect relative to your past or expected electricity use.
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