Tariffs to spike power generation costs: reports

Import tariffs are significantly increasing battery costs for U.S. utility-scale energy storage, potentially making the U.S. the world's most expensive solar market, according to Wood Mackenzie. Prices for four-hour battery systems have already risen 56% to 69% since January, and further cost increases of 12% to over 50% are projected depending on how import tariffs settle, with current tariffs including levies on Chinese components as high as 145% before a temporary reduction. This volatility and uncertainty in tariff policy are disrupting long-term planning and potentially delaying projects, as domestic manufacturing capacity will not meet demand until 2030.

Analysis

Import tariffs are substantially elevating costs for U.S. utility-scale energy storage installations and threaten to position the United States as the world's most expensive solar market, according to research from Wood Mackenzie and Anza Renewables. Prices for four-hour battery systems have surged by 56% to 69% since January, despite a 17% decrease in spot prices for lithium carbonate, a key battery input, over a similar period. This price escalation is attributed to a complex tariff structure, which by April included a universal 10% tariff, an additional 145% on Chinese components, and Section 301 levies. Although a temporary 90-day reprieve in May reduced the China-specific tariff to 30%, Anza Renewables anticipates this could paradoxically inflate near-term prices due to increased shipping demand as companies rush to import inventory. The long-term cost outlook remains highly uncertain, with Wood Mackenzie projecting potential increases of 12% to over 50% for utility-scale storage projects depending on future tariff scenarios, and 6% to 11% for other energy technologies. Under Wood Mackenzie's 'trade tensions' scenario, U.S. utility-scale solar projects could cost 54% more than in Europe and 85% more than in China by year-end 2026. This tariff-induced volatility, exemplified by Anza's data showing battery pricing for a 40-MW AC BESS rising 49% then falling 21% within weeks, disrupts long-term planning for developers facing five-to-10-year cycles and is likely to cause construction delays. Compounding these challenges, the U.S. is expected to rely heavily on imports for its battery needs, as domestic manufacturing capacity is projected by Wood Mackenzie to grow from 6% of current demand to only 40% of anticipated 2030 demand.

Key Decisions for Investors

• Investors should exercise significant caution with direct investments in U.S. utility-scale battery storage and solar projects given the substantial cost inflation and profound policy-driven uncertainty highlighted by recent tariff impacts.
• Continuously monitor U.S. trade policy developments and specific tariff announcements, as these are primary determinants of project costs, profitability, and timelines within the U.S. renewable energy sector.
• Consider re-evaluating portfolio allocations, potentially exploring opportunities in domestic battery manufacturing companies aiming to address the U.S. supply chain vulnerabilities, or diversifying into renewable energy markets with more stable policy and cost environments.
• Financial models for U.S. renewable energy developers and asset owners should incorporate heightened risk premiums and explicitly account for potential project delays and squeezed margins stemming from tariff volatility and increased component costs.