While equity investors bring cash and risk appetite, debt typically funds 50-75% of project costs. But how do lenders today actually get comfortable with BESS and hybrid investments, what does it mean for project developers, and what the heck does the term “bankable” really mean?. This Practice Note discusses changes to financing structures for battery storage projects after the enactment of the Inflation Reduction Act. This Note also discusses the fixed and variable revenue sources available to battery storage projects based on the benefits they offer to electricity. . Large scale energy projects integrating battery storage require significant capital. Global energy storage capacity additions exceeded 15 GW in 2024, with lithium-ion battery costs declining 90% over the past decade to. .
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During the past year, solar and battery storage have dominated capacity additions, coupled with a strong showing by wind: Between January 1 and October 31, 2025, utility-scale solar capacity grew by 19,477. 6 MW while an additional 4,837. 7 MW was provided by small-scale. . Moreover, utility-scale solar thermal and photovoltaic expanded by 34. 5% while that from small-scale systems rose by 11. 3% during the first ten months of 2025 compared to the same period in 2024. 1%) and produced. . 82% of U. energy comes from fossil fuels, 8. 7% from nuclear, and 9. In 2023, renewables surpassed coal in energy generation. 1 Global wind additions reached a record 117 GW in 2023, totaling 1,021 GW. remained the second-leading market in annual and cumulative. .
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