In our STEO forecast, utility-scale solar is the fastest-growing source of electricity generation in the United States, increasing from 290 BkWh in 2025 to 424 BkWh by 2027. Electricity generation by the U. In our latest Short-Term Energy Outlook (STEO), we expect U. 6% in 2027, when it reaches an annual total of 4,423 BkWh. The. The global solar power market size was valued at USD 253. 5 gigawatts direct current (GW dc) of capacity in Q2 2025, a 24% decline from Q2 2024 and a 28% decrease since Q1 2025. Solar accounted for 56% of all new electricity-generating capacity added to the US grid in the first half of 2025, with a total of 18 GW. Solar photovoltaics is one of the most cost-effective technologies for electricity generation and therefore its use is growing rapidly across the globe. Only in that last year. Solar Power Market (By Application: Residential, Commercial, Industrial; By Technology: Photovoltaic Systems, Moni-Si, Thin Film, Multi-Si, Others, Concentrated Solar Power Systems, Parabolic trough, Solar power tower, Fresnel reflectors, Dish Stirling; By End Use: Electricity Generation, Lighting. Solar power is clean, green, inexpensive, and renewable energy that is produced when sunlight strikes human-made solar cells and is subsequently converted into electricity. Solar power is effectively infinite in supply and can be generated at any point at which sunlight reaches the ground in every.