Solmar Insights
US clean power developers installed a record 17.1 GW of new utility-scale capacity in the second quarter of 2026, bringing cumulative national clean power capacity to nearly 388 GW. The American Clean Power Association (ACP) cited a 45% year-over-year growth rate, reflecting the sector’s strongest second quarter and first half ever recorded.
Key figures
17.1 GW new clean power capacity in Q2 2026
388 GW US cumulative clean power capacity
Nearly 53 GW nationwide battery storage
205 GW total development pipeline
Quarterly deployment breakdown
The second quarter of 2026 saw 164 utility-scale solar, energy storage, and wind projects come online. Of these additions, utility-scale solar led with 7.4 GW commissioned, followed by nearly 5 GW of land-based wind and 4.7 GW of new battery energy storage. Cumulative clean power capacity is now capable of supplying over 83 million US homes, according to ACP estimates.
Battery energy storage saw a significant jump as networked storage surpassed 50 GW, ending the quarter at nearly 53 GW. This represents a notable threshold for flexibility in balancing renewable generation and managing grid stability across major US transmission regions.
Project and state-level drivers
The record quarter for wind capacity was largely powered by Pattern Energy’s commissioning of the 3.65 GW SunZia Wind project in New Mexico. This single development now stands as the largest land-based wind project in US history, expected to deliver electricity to up to one million homes across the Western grid.
SunZia not only propelled New Mexico to the top spot for quarterly clean power additions but also ended Texas’s two-and-a-half-year dominance in new capacity. Such projects underscore the role of large-scale renewable assets in shifting the regional distribution of US clean energy development and highlight ongoing interconnection and transmission buildout challenges.
Pipeline momentum and procurement
The US clean power development pipeline expanded by 11% year-over-year, hitting a record 205 GW by the end of Q2 2026. Solar accounts for 111 GW and battery storage comprises 56 GW of these tracked projects. This growth occurred despite persistent hurdles in federal permitting and regulatory reviews, especially impacting wind developments.
Clean power procurement also accelerated, with 14.5 GW of new agreements in the quarter and power purchase agreement (PPA) announcements setting an all-time high for any first half of the year. This signals robust institutional and commercial demand for long-term clean energy supply as loads from sectors like data centers, electrified industry, and transportation push up wholesale demand curves.
Regulatory delays affect project delivery
While the top-line numbers are record-setting, ACP highlighted significant regulatory and permitting bottlenecks that continue to delay project execution. For land-based wind, expected Q2 2026 capacity additions slipped due to protracted federal review processes, contributing to a 4% quarter-over-quarter contraction in the wind development pipeline.
Across all asset types, more than 11.6 GW of anticipated capacity faced construction or commercial operation delays in the quarter. Developers and institutional buyers should therefore remain alert to federal process risks, particularly in transmission siting and interregional project financing, as these factors introduce delivery uncertainty despite underlying demand growth and procurement momentum.
Implications for market participants
Record capacity deployment alongside an expanding project pipeline frames a competitive environment for investors and developers seeking grid access and offtake arrangements. The increasing share of storage in capacity additions may change the bidding strategies for renewable projects participating in wholesale markets and resource adequacy procurements.
Meanwhile, state-level leadership in capacity additions has become more dynamic with landmark projects like SunZia, which highlight opportunities for greenfield development outside historically dominant regions. Delayed timelines, however, reinforce the need to factor federal and state permitting risk into asset valuation, construction schedules, and hedging strategies for power buyers and financiers.
What this means for buyers
Power assets, storage capacity, and interconnection rights in the Western US and national ISO markets are directly affected by these deployment figures. The 17.1 GW of new Q2 2026 capacity and a 205 GW active development pipeline increase urgency for offtake contracts and project site control. Buyers should prioritize early negotiation and diligence in regions with rapid buildout and regulatory uncertainties.
Reporting via the original publisher
