According to new data released by the U.S. Energy Information Administration (EIA) and reviewed by the SUN DAY Campaign, renewable energy's installed capacity is projected to surpass that of natural gas by summer 2027 or sooner. This milestone is driven by a projected addition of approximately 82.9 gigawatts (GW) of new renewable and battery storage capacity by June 30, 2027, while total fossil fuel and nuclear capacity are expected to decline by nearly 3.1 GW.
During the first half of 2026, electricity generated from renewables grew by 10.9% compared to the same period in 2025, led by utility-scale solar (up 21.6%), small-scale solar (up 13.0%), hydropower (up 10.1%), and wind (up 6.5%). In contrast, nuclear and natural gas generation grew by only 1.7% and 1.8%, respectively, while coal generation fell by 11.3%. The combined share of wind and solar, including small-scale systems, reached 22.3% of domestic electricity production, with solar becoming the leading renewable source in June 2026.
EIA projects that by June 30, 2027, utility-scale renewable capacity will reach 37.1% of total U.S. capacity, with solar adding 43,649.2 MW and wind adding 10,216.8 MW. Including an estimated 6,000 MW of new small-scale solar, total renewable capacity could reach approximately 546,219.4 MW, surpassing natural gas capacity of 518,286.3 MW. Battery storage is expected to grow by over 44% to 74,454.1 MW. This means that the combination of utility-scale renewables and storage will provide over 76 GW of new clean energy capacity by early summer 2027.
This rapid transition underscores a critical need for grid stability and advanced energy storage solutions. For B2B clients, including utilities, independent power producers, and large-scale storage project developers, this signals explosive growth in the Battery Energy Storage System (BESS) market. Strategic investment in storage technologies, battery management systems (BMS), and grid integration services will be crucial to capitalize on this shift. The data highlights an urgent opportunity for technology providers and project financiers to align with the accelerating renewable deployment curve.
The accelerating shift to renewables creates massive demand for grid-scale and behind-the-meter energy storage. While our primary focus is on high-performance solutions for UAV and portable applications, the industry's need for rapid, customized BMS and battery parameter matching is universal. Our online platform https://tool.liion-batt.com supports all B2B clients in efficiently evaluating and comparing battery technologies for their specific energy storage needs.