Depending on the anticipated sourcing of materials for the project, the impact of these tariff rate increases as they come online may be to substantially increase construction prices on BESS projects.
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The increase in tariffs for lithium-ion batteries from China from 7% to 25% was announced last week (14 May), effective this year for EV batteries and from 2026 for non-EV batteries, including battery energy
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The IRS has released an amended cost breakdown of BESS to be used for calculating if a product qualifies for domestic content tax credit incentives, with an increase in US suppliers in the coming quarters.
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The VAT relief also applies to BESS when installed in charitable buildings. Extending zero-rating VAT relief to cover retrofitted BESS follows significant solar industry campaigning. In response, the UK government announced in December that it would expand its VAT relief for energy-saving materials (ESMs) to include all domestic BESS.
Depending on the anticipated sourcing of materials for the project, the impact of these tariff rate increases as they come online may be to substantially increase construction prices on BESS projects.
The biggest impact comes from Section 301 tariffs, which add 25% to the cost of many battery components. Here’s the rundown: As of March 22, 2025, BESS manufactured in China and shipped to the U.S. faces a tariff rate that’s already a bit of a gut punch.
The standard VAT rate is the primary rate of VAT applied to goods and services within a country, covering most items except for certain specific goods and services that may qualify for a reduced rate. Some exceptions include essential items or goods and services that meet certain criteria outlined below. China applies 3 standard VAT rates.
Here’s the rundown: As of March 22, 2025, BESS manufactured in China and shipped to the U.S. faces a tariff rate that’s already a bit of a gut punch. Under the Biden administration’s Section 301 adjustments, lithium-ion batteries for non-EV applications (like our grid-scale BESS) are slated to jump from 7.5% to 25% starting January 1, 2026.
Residential BESS are now exempt from VAT in the United Kingdom when installed either new or retroactively in conjunction with rooftop solar systems. Previously, VAT relief was only available for domestic BESS if installed together with a new solar energy system. As of Feb. 1, a VAT zero rate will also apply to retrofitted residential BESS.
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