Suppliers of U.S.-made battery modules will more than double in the next two years, according to a new report on domestic content trends from Anza. The “Q1 2025 Domestic Content Insights” report shows that U.S. made battery modules will grow from four suppliers in the first half of 2025 to nine by 2027.
The report explores domestic content trends in solar modules and battery energy storage systems (BESS), focusing on manufacturers’ efforts to establish U.S. production in response to domestic manufacturing incentives and mitigating tariff risk. It provides insights into supplier availability, pricing, and delivery timelines to aid decision-making.
Domestic content overview
The “Q1 2025 Domestic Content Insights” report shows that manufacturers are increasingly shifting production to the United States, signaling a growing focus on domestic sourcing. These projections reflect the known supply chain landscape. However, Anza reports that ongoing interest in domestic solar and battery manufacturing, coupled with potential shifts in trade policy, tariff structures, and federal incentives like the ITC and 45X tax credits, could lead to even greater supplier participation.
| # of Suppliers by Delivery Date | 1H 2025 | 2H 2025 | 1H 2026 | 2H 2026 | 1H 2027 |
| U.S. assembled modules | 12 | 12 | 13 | 15 | 16 |
| U.S. made cells + modules | 7 | 7 | 8 | 10 | 10 |
- U.S. Assembled Modules: The number of suppliers is expected to grow from 12 in 1H 2025 to 16 by 1H 2027; a 33% increase.
- U.S. Made Cells + Modules: There is a notable increase of 43% in complete domestic modules, from 7 suppliers in 1H 2025 to 10 by 1H 2027.
BESS suppliers are relocating production to the United States, according to the report, driving faster growth in domestically manufactured components compared to module suppliers in Anza’s data set. This shift is primarily driven by proposed Section 301 tariff increases on Chinese imports, the heavy concentration of battery suppliers overseas, particularly in China, and the incentives provided by 45X. By moving production stateside, suppliers aim to reduce these tariff impacts.
| # of Suppliers by Delivery Date | 1H 2025 | 2H 2025 | 1H 2026 | 2H 2026 | 1H 2027 |
| U.S. BESS containers | 5 | 6 | 7 | 9 | 9 |
| U.S. BESS modules + containers | 4 | 6 | 7 | 9 | 9 |
| U.S. BESS cells + modules + containers | 0 | 2 | 3 | 6 | 7 |
- Domestic BESS Modules: U.S. made battery modules are growing from four suppliers in 1H 2025 to nine by 1H 2027, a 125% increase.
- Domestic BESS Cells + Modules: There are currently no complete domestic battery options, but there will be two complete domestic battery suppliers by the second half of 2025. This number will grow to seven by 1H 2027.
Manufacturing pricing dynamics
Solar: Complete domestic module products are now purchase-order ready. Suppliers are charging a premium of about $0.12 per Watt for fully domestic cells with U.S. assembly, compared to fully imported modules. This premium is largely driven by demand from customers aiming to secure supply, take advantage of incentives, or mitigate current and anticipated tariff risk. The chart below highlights the median list pricing for all modules in Anza’s database.
In Scenario 1 on the graph below, Anza’s analysis shows the potential impact of the Section 301 tariff of 25% moving to 2025. Additionally, new universal tariffs of 10-20% on all imported products are speculated to be under consideration by the new Trump administration. In the scenarios below, the report shows a 10% universal tariff on China without accelerating the higher 25% Section 301 tariffs in 2025 (Scenario 2) and all Asian countries (Scenario 3). The black bars indicate the average of estimated domestic content product pricing.
While these potential tariff changes may temporarily raise BESS pricing in 2025, they could stabilize or decrease pricing slightly by early 2026 as alternative supply chains outside China expand, Anza reports. This stabilization or slight decrease in pricing in 2026 relies on various “what if” scenarios, including which of the above-described tariff policies are enacted and whether any adjustments to tax credits are made.
About Anza
The pricing data in this report represents a snapshot of the extensive information available on the Anza platform. Besides pricing, the company maintains one of the industry’s largest databases of product and counterparty data including technical specifications, tariff risks, domestic content, and contract terms. Additionally, Anza works closely with suppliers to track their domestic manufacturing and production plans, ensuring our customers stay informed with the most up-to-date insights for their development and procurement strategies.
Tags: Anza, BESS, domestic content
