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NEW YORK, June 6 (Reuters) - Solar accounted for 75% of electricity generation capacity added to the U.S. power grid early this year as installations of panels rose to a quarterly record, according to a report published by Wood Mackenzie and the Solar Energy Industries Association on Thursday.
Together, solar and battery storage account for 81% of the expected total capacity additions, with solar making up over 50% of the increase. Solar. In 2024, generators added a record 30 GW of utility-scale solar to the U.S. grid, accounting for 61% of capacity additions last year.
The International Renewable Energy Agency (IRENA) reports that, between 2010 and 2023, the global weighted average levelized cost of energy of concentrating solar power (CSP) fell from $0.39/kilowatt-hours (kWh) to under $0.12/kWh—a decline of 70%.
Installed solar capacity in the U.S. now totals about 220 GW, enough to provide over 7% of the nation's electricity. This continues a decade-long trend of rapid growth in solar power. Battery storage nearly doubled in 2024, with total installed capacity reaching almost 29 GW — and projected to grow another 47% in 2025.
In this case, the energy storage side connects the source and load ends, which needs to fully meet the demand for output storage on the power side and provide enough electricity to the load side, so a large enough energy storage capacity configuration is a must.
Collaborative measures include improving load elasticity, reducing electricity consumption, and load fluctuation with the power supply. The synergy with energy storage as the main body is to balance supply and demand and improve power quality.
The power grid side connects the source and load ends to play the role of power transmission and distribution; The energy storage side obtains benefits by providing services such as peak cutting and valley filling, frequency, and amplitude modulation, etc.
Energy storage is an important link for the grid to efficiently accept new energy, which can significantly improve the consumption of new energy electricity such as wind and photovoltaics by the power grid, ensuring the safe and reliable operation of the grid system, but energy storage is a high-cost resource.
Building codes: Battery energy storage systems (BESS) must comply with local building codes and fire safety regulations, which can vary across different geographies and municipalities. These codes are governed by the National Fire Protection Association (NFPA) in the U.S. and the performance-based European Standards (EN) in the European Union.
The regulatory and compliance landscape for battery energy storage is complex and varies significantly across jurisdictions, types of systems and the applications they are used in. Technological innovation, as well as new challenges with interoperability and system-level integration, can also amplify risks.
UL 1973: Batteries for Use in Stationary and Motive Auxiliary Power Applications. Safety standard for modules and battery systems used in stationary energy storage systems. UL 9540, Energy Storage Systems and Equipment. Safety standard for energy storage systems used with renewable energy sources such as solar and wind.
Containerized Battery Energy Storage Systems (BESS) are essentially large batteries housed within storage containers. These systems are designed to store energy from renewable sources or the grid and release it when required. This setup offers a modular and scalable solution to energy storage.
Get technical specifications, product datasheets, and installation guides for our PV-ESS container solutions.
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