Solar Plus Storage Project Financing
Adding a battery to a solar project changes the revenue, the technical risk and the way lenders size debt. Financing goes smoothly when the storage revenue is contracted or clearly modeled and the augmentation plan is funded.
FG Capital Advisors structures co-located and hybrid solar plus storage projects and arranges debt and equity from third party lenders and investors.
Start Client IntakeWho This Is For
Hybrid Project Developers
Developers adding battery storage to new utility scale or commercial solar projects.
Owners Retrofitting Storage
Owners of operating solar plants adding a battery behind the same interconnection point.
IPPs with Hybrid PPAs
Independent power producers with hybrid, firmed or dispatchable power purchase agreements.
Investors
Funds assessing hybrid projects for acquisition or co-investment.
What FG Capital Advisors Arranges
Revenue Structuring
Review of hybrid PPAs, tolling, capacity and merchant revenue, and how each is shown in the lender case.
Technical and Model Inputs
Degradation, augmentation, round trip efficiency and dispatch assumptions set out explicitly in the model.
Debt and Equity
Construction and term debt sized to each revenue stream, plus sponsor equity and tax equity or credit transfer where eligible.
Contract Interfaces
Alignment of the solar EPC, battery supply, warranties and O&M so the risk sits in the right place.
This service is part of our Solar Project Finance Advisory work, which covers every stage of solar and renewable energy financing.
How It Works
- You send the project details through the client intake form, including solar and storage capacity, location, stage, offtake and the capital you need.
- We review revenue, technical and contract interfaces as lenders will and list the gaps in writing.
- We build or audit the model with separate solar and storage revenue cases and size the debt.
- We approach lenders and investors that finance hybrid projects and coordinate diligence to close.
What Lenders and Investors Look For
Contracted Storage Revenue
A hybrid PPA, tolling or capacity contract, or a clear and supportable merchant revenue case.
Augmentation Plan
A funded plan to maintain storage capacity over the debt tenor.
Supplier Strength
Battery supplier warranties, performance guarantees and service terms that lenders accept.
Grid Rights
An interconnection agreement that covers both the solar and the storage operation.
Documents to Send
Project
Site, capacity, interconnection agreement, permits and development schedule.
Revenue
PPA, tolling or capacity contracts, and any market or dispatch studies.
Technical
Energy yield assessment, battery specifications, warranties and augmentation plan.
Financial
Financial model, budget, sources and uses and target capital.
Related Services and Guides
Frequently Asked Questions
Why do lenders treat storage revenue differently from solar revenue?
Solar output under a PPA is relatively predictable. Storage revenue depends on dispatch, market prices and degradation unless it is contracted, so lenders size debt on it more cautiously.
Can storage be added to an operating solar plant and financed?
Often yes, if the interconnection, land rights and existing finance documents allow it. Existing lender consent is usually needed.
What is an augmentation plan?
It is the plan and budget for adding or replacing battery capacity over time so the system can keep meeting its contracted capacity.
How do I start?
Send the project summary, contracts and model through the client intake form.
Start Your Client Intake
Send the project through our client intake form with the details listed above. We review every submission and reply in writing with the scope, fee and next steps.
Start Client IntakeLenders and investors make their own credit and investment decisions. Terms and approval depend on their diligence, and funding is not guaranteed.

