C&I Solar + Battery Loans: The Lender Who Funds the Battery Wins the Deal

The whole project is up for grabs. More C&I solar proposals now come with a battery: factories, warehouses, commercial buildings. And many lenders still only have a method for the solar part, so they say no to the battery. That's the opening.

The flow for a lender ready to assess storage is simple: the file arrives (rooftop solar for a factory, with a battery attached), credit checks both the solar and the battery in the same file, and the lender funds it all, as one loan for the whole project.

What the lender who says yes gets

• The whole project: solar and battery in one loan, a bigger ticket.
• The next deal: installers bring battery deals to the lenders who say yes.
• A book that keeps pace: a C&I book that grows with the market, not behind it.

Why now: two tailwinds

1. State rules: some states now require batteries on larger C&I projects. For example, Maharashtra requires storage on new solar above 100 kW from 1 April 2026.
2. Economics: battery economics are improving on their own.

Expect more battery files in the C&I pipeline, not fewer. The only question is who funds them first.

Two lenders, the same file

• Lender A waits: funds the solar, passes on the battery, watches the deal go elsewhere, and grows slower than the market.
• Lender B moves first: funds the whole project, battery included, gets the installer's next battery deal, and grows with the C&I market.

For business heads, a useful measure is the share of battery files reaching the team that are funded in full, battery included. Ingro Sims provides the sizing, siting and commercials needed to assess that battery part in a few minutes.