A historic growth: The United States now has enough solar capacity to power over 50 million homes

Solar energy in the United States has reached a new milestone: it now has enough operational capacity to supply electricity to more than 50 million homes, which is equivalent to more than a third of the total in the country. This data comes from the US Solar Market Insight report prepared by the Solar Energy Industries Association (SEIA) and Wood Mackenzie.

In the second quarter of 2026, the solar industry added 11.4 GWdc of new capacity, a 45% year-on-year increase and a 43% increase compared to the first quarter. Tim Pawlenty, CEO of SEIA, emphasized: “Solar energy and storage have reached a scale that most Americans still do not fully understand, and we simply cannot meet the growing energy needs of the United States without these technologies”.

Leadership of large-scale solar energy

The surge was led by large-scale solar energy, which added 9.6 GWdc installed, 61% more than the previous year. This growth reflects the acceleration of projects before the July 2026 deadline to access tax credits.

Together, solar energy and storage accounted for 70% of all new capacity added to the power grid in the first half of 2026, consolidating their role as a driver of the energy transition.

Future projections

The report predicts that the US solar market will almost double in the next five years, allowing:

• To meet the growing demand for energy.
• To strengthen the reliability of the power grid.
• To reduce energy costs.

Caitlin Connelly, senior analyst at Wood Mackenzie, noted: “A strong project portfolio and protected capacity development will maintain an annual capacity of approximately 44 GWdc until 2031”. However, she warned that permits and the post-ITC transition remain significant obstacles for the sector.

Residential market and energy resilience

The residential segment faces challenges following the expiration of the tax credit, but forecasts indicate it will grow again in 2027, driven by the need to reduce electricity bills and improve the energy resilience of homes.

The installation of solar panels in homes is emerging as a key tool for consumers to face increases in electricity costs and supply outages.

Geographical distribution of the solar boom

The growth is not limited to states traditionally associated with renewable energies. In fact, the states won by President Trump in 2024 accounted for 71% of all solar capacity installed in the first half of 2026, including eight of the ten with the highest number of new installations.

This reflects that solar energy has become a cross-cutting option, adopted in diverse regions for economic and energy security reasons.

Economic and environmental impact

The solar boom also generates additional benefits:

• Green employment: the expansion of projects drives the creation of thousands of jobs in construction, maintenance, and operation.
• Emission reduction: solar energy helps decrease dependence on fossil fuels and meet decarbonization goals.
• Technological innovation: battery storage and grid digitalization allow for more efficient integration of renewable energy.

Solar energy in the United States is at a decisive moment. With the capacity to supply more than 50 million homes and sustained projected growth, it is consolidating as one of the key technologies for the country’s energy future.

The challenge will be to overcome regulatory and fiscal barriers, ensure the expansion of the residential market, and harness the economic and environmental potential of this energy revolution.