Inside the Solar Buildout: Utility-Scale Solar Construction Statistics, Trends & Research in 2026

June 08 2026
15 min reading time

Utility-scale solar dominates the U.S. construction pipeline like no other energy source, and the numbers explain why. This page compiles the key statistics on U.S. utility-scale solar capacity, construction pipelines, balance-of-system costs, supply chain dynamics, interconnection queues, and the policy deadlines reshaping the industry, with every figure sourced and linked directly to the primary research.

Serving as a comprehensive reference for journalists, researchers, and energy professionals, this data is compiled from U.S. government agencies, national laboratories, and leading industry sources.

All statistics on this page are sourced from publicly available Tier 1 and Tier 2 research, focusing specifically on the construction and installation side of utility-scale solar including the supply chain, project pipeline, costs, and infrastructure buildout.

1. Key Utility-Scale Solar Statistics at a Glance

Top-line numbers for quick reference. Each figure is expanded in detail in the sections below.

43.4 GW — Utility-scale solar capacity planned for addition to the U.S. grid in 2026, a 60% increase over 2025. (EIA, February 2026)
51% — Solar's share of all planned U.S. capacity additions in 2026 — more than any other energy source. (EIA, February 2026)
86 GW — Total new U.S. utility-scale generating capacity projected for 2026, a record if realized. (EIA, February 2026)
34.7 GWdc — Utility-scale solar installed in 2025, despite a Q4 slowdown driven by safe harbor and policy dynamics. (SEIA/Wood Mackenzie 2025 Year in Review)
279 GWdc — Cumulative U.S. solar capacity installed at year-end 2025. (SEIA/Wood Mackenzie 2025 Year in Review)
~2,300 GW — Total generation and storage capacity actively seeking grid interconnection in the U.S. as of the end of 2024. (LBNL Queued Up 2025 Edition)
July 4, 2026 — Critical construction-start deadline under the OBBBA for solar projects to qualify for the full Investment Tax Credit. (Arnold & Porter)
65.5 GW — U.S. domestic solar module manufacturing capacity at the end of 2025, up more than 50% from 2024. (SEIA/Wood Mackenzie 2025 Year in Review)

2. 2025 Year in Review: Installation Numbers

2025 marked the fifth consecutive year that solar led all energy sources in new U.S. capacity additions, a milestone even as a Q4 slowdown pulled full-year utility-scale numbers below 2024 levels. The decline was structural, not demand-driven: policy deadline dynamics caused developers to defer commissioning rather than cancel projects.

34.7 GWdc utility-scale solar installed in 2025, a 16% decline from 2024's record. Installations tracked closely with 2024 through the first three quarters, then fell sharply in Q4. (SEIA/Wood Mackenzie 2025 Year in Review)
Q4 2025 utility-scale installations fell nearly 40% quarter-over-quarter. Developers delayed commercial operation dates to focus on safe harboring their pipeline ahead of new tax credit deadlines under the One Big Beautiful Bill Act (OBBBA). (SEIA/Wood Mackenzie 2025 Year in Review)
Solar accounted for 54% of all new U.S. electricity-generating capacity added in 2025, its fifth consecutive year as the top source of new power. Solar and storage combined made up 79% of all new capacity. (SEIA press release)
43.2 GWdc installed across all solar segments in 2025 (utility-scale, residential, commercial, and community solar combined), a 14% decrease from 2024. (SEIA/Wood Mackenzie 2025 Year in Review)
Cumulative U.S. solar capacity reached 279 GWdc at year-end 2025. Wood Mackenzie projects this will nearly triple to 769 GWdc by 2036, with average annual additions exceeding 44 GWdc. (SEIA/Wood Mackenzie 2025 Year in Review)
Texas installed 11 GW in 2025, more than any other state and nearly double its nearest competitor. 11 states set annual solar installation records; 12 states topped 1 GW for the first time. (SEIA/Wood Mackenzie 2025 Year in Review (via SolarQuarter)

3. 2026 Outlook: Record Construction Pipeline

2026 is shaping up to be the biggest year in U.S. solar history. The EIA's February 2026 projections show a pipeline more than 60% larger than what was actually built in 2025, driven by an extraordinary rush to safe harbor projects ahead of tax credit deadlines, paired with surging electricity demand from data centers and AI infrastructure.

43.4 GW of utility-scale solar planned for 2026, a 60% year-over-year increase over the 27.2 GW added in 2025, and more than 12 GW above 2024's prior record. If realized, 2026 would mark the third consecutive record year. (EIA Today in Energy, February 2026)
86 GW of total utility-scale capacity projected for 2026, the largest single-year addition in over two decades, surpassing the 53 GW installed in 2025. Solar leads at 51%, followed by battery storage at 28%, wind at 14%, and natural gas at 7%. (EIA Today in Energy, February 2026)
Renewables and storage are projected to account for 93% of all new utility-scale capacity in 2026, with natural gas adding just 6.3 GW. (pv magazine USA)
Solar generation is projected to grow from 290 TWh in 2025 to over 420 TWh by the end of 2026, a nearly 45% increase in annual solar output in a single year. (pv magazine USA)
24 GW of utility-scale battery storage is also planned for 2026, up from a record 15 GW added in 2025. The U.S. has added more than 40 GW of battery storage over the past five years. (EIA Today in Energy, February 2026)
Wood Mackenzie projects 199 GWdc of new utility-scale solar from 2025–2030, with solar constituting roughly half of all new capacity added each year through 2060. (SEIA Q2 2025 Report)

4. Solar's Share of New U.S. Generating Capacity

Solar has established itself as the default source of new U.S. generating capacity. For five consecutive years, solar has led every other energy source in new installations, and 2026 projections suggest that lead is widening.

Solar = 51% of all planned 2026 U.S. capacity additions, more than wind, battery storage, and natural gas combined. This is the first time planned solar additions have crossed the 50% threshold of total new capacity in a single year. (EIA Today in Energy, February 2026)
Solar led all new U.S. capacity for the fifth consecutive year in 2025, accounting for 54% of all new electricity-generating capacity added to the grid. (SEIA press release)
In Q1 2025 alone, solar accounted for 69% of all new U.S. capacity, the highest single-quarter share on record. (SEIA Q2 2025 Report)
Solar and storage together made up 79% of all new U.S. capacity in 2025. Their combined share has held above 75% for multiple consecutive years. (SEIA/Wood Mackenzie 2025 Year in Review)
53 GW added to the U.S. grid in 2025 across all technologies, the largest single-year capacity addition since 2002. The 86 GW projected for 2026 would more than double that pace. (pv magazine USA)

5. State-by-State: Where Solar Is Being Built

Solar construction is highly concentrated geographically, with Texas alone accounting for a remarkable share of both 2025 actuals and 2026 planned additions. The top four states account for more than half of the 2026 pipeline, though secondary markets are growing rapidly.

Texas accounts for 40% of the 2026 utility-scale pipeline (17.4 GW), by far the most active solar construction market in the country. The state's deregulated ERCOT grid, abundant land, and low development costs continue to attract the largest projects. (EIA Today in Energy, February 2026 | pv magazine USA)
Arizona (6%), California (6%), and Michigan (5%) round out the top four states for 2026 planned utility-scale solar additions. Combined with Texas, these four states account for more than half of all planned 2026 additions. (EIA Today in Energy, February 2026)
Tehuacana Creek 1 Solar and BESS (837 MW, Texas) is the largest single utility-scale solar project expected to come online in 2026, paired with 418 MW of battery storage. (EIA Today in Energy, February 2026)
Texas installed 11 GW of solar in 2025, more than any other state and 92% more than the second-ranked state in Q1 2025. (SEIA/Wood Mackenzie 2025 Year in Review (via SolarQuarter))
11 states set new annual solar installation records in 2025; 12 states surpassed 1 GW of solar for the first time, reflecting the geographic broadening of the market into Indiana, Ohio, Utah, Arkansas, and other traditionally smaller solar states. (SEIA/Wood Mackenzie 2025 Year in Review (via SolarQuarter))
Three Texas battery storage projects rank among the four largest planned BESS additions in 2026: Lunis Creek BESS (621 MW), Clear Fork Creek Solar and BESS (600 MW), and the Tehuacana Creek 1 BESS (418 MW). Texas accounts for 53% (12.9 GW) of all planned 2026 utility-scale battery additions. (EIA Today in Energy, February 2026)

6. Balance of System: The Growing Cost Factor

As solar module prices have fallen dramatically, Balance of System (BOS) components (everything in a utility-scale solar installation except the panels themselves) have become the dominant cost driver. For electrical contractors and supply chain professionals, BOS represents both the largest cost category and the fastest-growing segment of the solar construction market.

BOS components represent approximately 50% of total PV system cost, including inverters, mounting structures, wiring, combiner boxes, transformers, monitoring systems, and grid interconnection equipment. As module prices have fallen, BOS has grown to become the majority cost component of a solar installation. (Verified Market Reports)
Utility-scale fixed-tilt system cost: $1.18/Wdc in Q4 2025; single-axis tracker systems: $1.35/Wdc. These represent 11% and 14% year-over-year increases respectively, driven primarily by tariff-related cost increases on electrical and structural components. (SEIA/Wood Mackenzie 2025 Year in Review)
Electrical and structural equipment costs surged 60% in Q4 2025 vs. Q4 2024, driven by Section 232 tariffs that pushed domestic raw material prices for steel, copper, and aluminum up 35%. EPC overhead and margin rose an additional 35% year-over-year as developers paid premiums to secure contractors ahead of safe harbor deadlines. (SEIA/Wood Mackenzie 2025 Year in Review)

7. Construction Workforce & Supply Chain

The solar construction supply chain is under simultaneous pressure from three directions: surging demand driven by the 2026 safe harbor deadline rush, module availability constraints affecting both domestic and imported supply, and interconnection queue backlogs that are extending project timelines by years. For electrical contractors and supply chain participants, these dynamics are reshaping project economics and timeline planning across the industry.

U.S. domestic solar module manufacturing capacity reached 65.5 GW at the end of 2025, up more than 50% from 42.5 GW at the end of 2024. 2025 was also the first year the U.S. produced every major component of the solar supply chain domestically, including wafers (new Corning facility in Michigan). (SEIA/Wood Mackenzie 2025 Year in Review)
Both domestic and imported solar modules are sold out through year-end 2026, per installer and distributor reports in Q4 2025. The rush to safe harbor projects before the July 4, 2026 deadline has created a demand surge that is outpacing available supply across all module types. (SEIA Q4 2025 Report)
216–240 GWdc of solar capacity expected to be safe harbored between mid-2024 and July 4, 2026, per Wood Mackenzie analysis. This is an unprecedented volume, enough to supply projected U.S. solar installations through the end of the decade, and is the primary driver of current module and equipment shortages. (SolarQuarter / Wood Mackenzie)
~2,300 GW of total generation and storage capacity actively seeking grid interconnection as of the end of 2024—down from 2,600 GW in 2023 (the first decline in at least a decade), partly due to FERC Order 2023 reforms. Solar projects account for 956 GW of that total. (LBNL Queued Up 2025 Edition)
Median time from interconnection request to commercial operation has doubled to over 4 years for projects built between 2018 and 2024, up from under 2 years for projects built in 2000–2007. Only 14% of solar projects that enter the interconnection queue historically complete the process successfully. (LBNL Queued Up 2025 Edition)
112 GW of solar and storage capacity withdrew from the interconnection queue in 2024, a record driven by a combination of policy uncertainty, elevated interest rates, tariffs, and local permitting challenges. (Solar and Storage Industries Institute (SI2))
Solar projects represent over 1,080 GW of total interconnection queue capacity, making solar the dominant technology in the backlog and meaning that interconnection delays disproportionately affect solar project timelines. (Energyscape Renewables / LBNL data)

8. Policy & Incentive Landscape

The passage of the One Big Beautiful Bill Act (OBBBA) on July 4, 2025 fundamentally restructured the federal solar incentive framework, creating a hard construction-start deadline that is driving the most concentrated surge of safe harboring activity in the industry's history and compressing an enormous volume of project activity into a narrow window ending in mid-2026.

July 4, 2026: Critical construction-start deadline under the OBBBA. Solar projects that begin construction by this date qualify for the 30% Investment Tax Credit under Section 48E/45Y with up to four years to reach commercial operation. Projects starting after this date must be placed in service by December 31, 2027 — a timeline considered highly unrealistic for utility-scale development. (Arnold & Porter | White & Case)
FEOC (Foreign Entity of Concern) restrictions took effect January 1, 2026, adding supply chain compliance requirements for projects seeking ITC eligibility. Wood Mackenzie analysis indicates FEOC restrictions could impact roughly half of operational solar manufacturing capacity across cells and modules. (SEIA Q3 2025 Report)
216–240 GWdc of solar capacity expected to be safe harbored before the July 2026 deadline, enough to support projected U.S. solar installations through the end of the decade. This unprecedented safe harboring activity is the primary driver of current module shortages and EPC capacity constraints. (SolarQuarter / Wood Mackenzie)
EPC overhead and margin rose 35% year-over-year in Q4 2025 as developers paid premiums to secure contractors and meet safe harbor and tax credit deadlines — a direct cost impact of the compressed policy timeline. (SEIA/Wood Mackenzie 2025 Year in Review)
FERC Order 2023 reformed interconnection procedures by shifting from a serial "first-come, first-served" study process to a cluster study approach, requiring projects to demonstrate readiness before entering the queue. Implementation is ongoing across ISOs/RTOs, with PJM and CAISO among the first to transition to the new model. (FERC Interconnection Final Rule Explainer)
490 GW of new U.S. solar capacity projected through 2036, bringing total installed capacity to approximately 769 GWdc. Even under policy headwinds, Wood Mackenzie projects solar will constitute roughly half of all new U.S. capacity added each year through 2060. (SEIA/Wood Mackenzie 2025 Year in Review (via SolarQuarter)

Sources and methodology: All statistics are drawn from publicly available primary and secondary sources, linked at each data point. Tier 1 sources include the U.S. Energy Information Administration, Lawrence Berkeley National Laboratory, National Renewable Energy Laboratory, and FERC. Tier 2 sources include SEIA/Wood Mackenzie Solar Market Insight, pv magazine, and Arnold & Porter. This page is updated as new quarterly data is published. Last updated: June 2026.