Jupiter Power's $1.4 Billion Close Shows Storage Lenders Now Pricing in Four Separate Deals, Not One

Jupiter Power closed $1.4 billion in financing across four separate transactions for ten battery storage projects in Texas and Michigan, the company said in a release on September 16, 2026. The portfolio totals 1,500 MW and 3,600 MWh, split across tranches that closed in April, May, June and July rather than as a single bundled raise.

Buried inside that sequence is the figure other developers will actually use: a BBB- rating from KBRA on one of the four tranches, the only external credit opinion attached to any piece of this portfolio. Four lender groups underwrote four slices of the same pipeline over four months, pricing senior secured project debt, a tax equity bridge, and a rated private placement separately rather than as one package.

Four Closings, Four Lender Groups

ESS News broke down the sequence: a $258 million senior facility in April for the Callisto II and Pamela Heights I projects; a $294 million package in May for Grand Basin and Voyager I; and a $536 million senior secured facility in July for the Tidwell Prairie II, Bee Branch and Barton Branch projects in Texas, arranged with HSBC Bank USA and SMBC, according to Energy Storage News on September 18, 2026.

Those four figures add up to $1.369 billion, not the $1.4 billion headline figure in Jupiter Power's release. Neither the company's release nor the press accounts of the four closings explains the $31 million gap.

From a $225 Million Revolver to $1.4 Billion

The scale shift did not happen in one step. Jupiter Power secured a $500 million Senior Secured Green Revolving Loan and Letter of Credit Facility in January 2026, upsized from an original $225 million commitment, ESG Today reported on January 30, 2026. CFO Jesse Campbell said at the time the facility would support "long-term contracted cash flows" and fund new procurement.

Eight months later, commenting on the $1.4 billion close, Campbell called the four transactions a "testament to the depth and diversity of our capital markets relationships," according to Jupiter Power's September 16, 2026 release.

BlackRock's Ownership Set the Stage

The institutional backing behind the larger facilities traces to November 15, 2022, when BlackRock Alternatives' Diversified Infrastructure business agreed to acquire Jupiter Power from EnCap Energy Transition Fund I, Private Equity Insights reported at the time. Then-CEO Andy Bowman said the deal reflected how "energy storage is maturing into an important new player in the electricity business."

Not quite four years later, that ownership appears to be the reason Jupiter Power can run four parallel financings with different lender syndicates rather than negotiating one facility and waiting on a single credit committee. BlackRock's infrastructure arm brings relationships with institutional note buyers, AB CarVal and Nuveen among them, that do not typically appear in developer-stage storage financing.

What the Revenue Stack Looks Like to Lenders

JIS Energy, writing September 21, 2026, linked the Jupiter Power close to a broader pattern it described as institutional lenders growing comfortable with "the complex revenue stacks associated with battery assets," framing the shift as a move from merchant-only risk toward underwriting a blend of contracted capacity payments and ancillary services. That characterization comes from a single trade publication; neither Jupiter Power's release nor the project-level reporting from ESS News or Energy Storage News discloses the offtake or merchant split for the ten projects.

Why the Tranche Structure Matters to Other Developers

A developer raising $1.4 billion in one shot needs a single lender group willing to take the entire credit risk at once. Splitting the raise into four closings over four months let Jupiter Power shop different slices of the portfolio to different capital pools instead. Mgrid.org's analysis advised storage buyers in ERCOT and MISO to price this shift into their own term sheets, arguing the four closings show different lender groups each pricing a smaller slice of the portfolio rather than one group underwriting the whole thing.

For a developer without BlackRock's balance sheet and relationship network, replicating that structure means building the same kind of syndicate relationships Jupiter Power already had in place before the April 2026 close began. The $500 million green revolver from January 2026 functioned as the liquidity base that let the company sequence four separate financings without a gap in working capital between them.

The Open Question on Credit

KBRA's BBB- rating on the June placement is the only external credit opinion publicly tied to any piece of this portfolio, covering three of the ten projects. Whether the senior secured facilities from April, May and July carry comparable implied credit quality has not been disclosed in any of the reporting on this deal. Developers benchmarking their own storage financings against Jupiter Power's close have one rated data point to work from, not ten projects' worth.

Links Verified at Time of Publish

Sources

This article was reported from the following sources.

1. Jupiter Power closes US$1.4 billion financing for 10 US BESS projects totalling 3.8GWh — Energy Storage News, 2026-09-18
2. Jupiter Power secures $1.4 billion in financing for 1.5 GW energy storage portfolio — ESS News, 2026-09-17
3. Jupiter Power Closes $1.4 Billion on 1,500 MW of Texas and Michigan Batteries — Mgrid.org, 2026-09-17
4. BESS Project Finance Surges With Record 206 GWh Supply Deal — JIS Energy, 2026-09-21
5. BlackRock-Backed Jupiter Power Secures $500 Million to Build Battery Storage Across U.S. — ESG Today, 2026-01-30
6. BlackRock to acquire Jupiter Power from EnCap Investments — Private Equity Insights, 2022-11-15