Author: Brady Souden, Director, Econ Energy
Battery storage financing has not kept up with the technology it supports. Even as virtual power plants (VPPs) now span over 37.5 GW of flexible capacity in the US alone, the battery storage financing options available to homeowners still treat these systems like generic appliances rather than revenue-producing assets.
That disconnect has real consequences. For instance, a 13.5 kWh Tesla Powerwall can earn $300 to $1,000 per year through VPP participation. Yet no mainstream battery storage financing product factors this revenue into a borrower’s capacity to repay. Instead, lenders rely on FICO scores and standard personal loan terms. According to the US Department of Energy, home batteries could deliver $10 billion per year in grid savings by 2030. Without better lending products, adoption will lag far behind that potential.
Battery Storage Financing Hits a Wall With Traditional Lending
So why can’t existing loan products handle this asset class? Put simply, batteries break every traditional lending category.
Car loans cover depreciating assets that produce no income. Mortgages cover appreciating assets with clear shelter value. In contrast, home batteries depreciate at 1 to 2% per year while simultaneously generating revenue from energy arbitrage, demand response, and capacity payments. No standard underwriting model accounts for all three dimensions at once.
On top of that, battery revenue is wildly volatile. In Texas, batteries earned 50% of their annual income in just 13 days during 2023. Then ERCOT revenues collapsed roughly 90% between 2023 and 2025 as installed capacity tripled to 11 GW. Similarly, California battery net revenues per kilowatt dropped from $103 in 2022 to $53 in 2024 as solar penetration softened peak prices.
Because of this volatility, most homeowners still access battery storage financing through four limited channels: cash purchase at around $15,000, solar-bundled loans through platforms like GoodLeap, PACE financing at 6.5 to 9.0% rates, or green loans like Australia’s Brighte at 6.99% introductory rates. None of these incorporate VPP revenue into their lending decisions.
5 Models Closing the Battery Storage Financing Gap
Despite these challenges, five approaches are reshaping how home batteries get funded. Each one tackles the problem from a different angle, and together they point toward what a mature lending market could look like.
1. Fleet Ownership (Base Power) Austin-based Base Power raised $1 billion in October 2025 by eliminating consumer financing altogether. Essentially, the company owns the batteries, installs them for $695, and charges homeowners $19 per month plus electricity at 8.5 cents per kWh. As a result, Base Power transforms the question from consumer lending into something closer to utility-scale project finance. Its fleet already exceeds 100 MWh of residential capacity across Texas, proving that creative battery storage financing can scale without touching a credit score.
2. Utility-Contract-Backed Lending (Swell Energy) Swell Energy created a $450 million financing vehicle backed by 10 to 15 year utility capacity payment contracts. Consequently, the utility contract itself serves as collateral rather than relying on a borrower’s credit score alone. Meanwhile, Swell’s GridAmp software platform manages multi-vendor battery fleets, generating the performance data lenders need.
3. Solar-Plus-Battery Securitisation (Sunrun) Sunrun priced a $629 million securitisation in January 2025 covering residential solar and battery systems. With battery attachment rates hitting 70% of new installations by Q3 2025, batteries are gradually becoming standard components within securitised pools. Over time, this builds the performance track record that standalone battery-backed instruments will eventually require.
4. Utility-Led Leasing (Green Mountain Power) Vermont’s Green Mountain Power leases Tesla Powerwalls for $55 per month. Here, the utility carries the financing risk while monetising VPP value across its entire customer base. Therefore, this model replaces consumer underwriting with investment-grade utility credit, removing one of the biggest barriers to residential battery adoption.
5. Government-Backed Subsidy Architecture (Australia) Australia’s Cheaper Home Batteries Program expanded to $7.2 billion in December 2025, providing roughly a 30% discount on costs through Small-scale Technology Certificates. Importantly, eligible batteries must be VPP-capable to qualify for the subsidy. More than 125,000 households installed batteries in the first four months alone. As a result, this program creates a growing pipeline of verified VPP performance data that future lenders can use for underwriting.
What Stands Between Today and Scalable Battery Storage Financing
All five models represent meaningful progress. Still, no purpose-built product exists that underwrites projected VPP revenue as part of a borrower’s repayment capacity at scale. Each approach solves one piece of the puzzle, but none yet delivers a complete battery storage financing solution that a mainstream lender could offer across geographies and market conditions without bespoke structuring.
Three things need to happen before that changes. First, standardised data infrastructure must emerge for real-time battery performance and revenue tracking. Companies like Texture and Swell’s GridAmp are working on this problem from different directions, but widespread adoption remains fragmented across markets. Second, VPP participation agreements need longer terms and standardised structures so lenders can treat them as assignable collateral. Most current agreements are far too short for that purpose. Third, the market needs enough performance history to satisfy rating agencies evaluating securitised battery portfolios.
Australia’s approach offers the clearest global template. By combining subsidies with VPP-readiness mandates and mature wholesale market access, it gives lenders something they can measure and model. For fintech builders and energy finance innovators, battery storage financing remains one of the largest untapped opportunities in distributed energy. Ultimately, the companies that solve it will help build both a new lending category and the distributed grid itself.
Brady Souden is Director of Econ Energy, a family-owned Canberra solar and electrification business with over 6,000 solar installations. He writes about the intersection of clean energy and financial innovation for FintechBits.