Delafield and Rosemawr form financing partnership for battery storage grid hookups

Delafield Energy and Rosemawr Sustainable Infrastructure Management have launched a financing partnership to fund grid interconnections for a growing portfolio of Mid-Atlantic utility-scale battery storage projects. The deal is meant to speed deployment as regional power and capacity demand rises.

Why it matters: - The financing partnership is designed to remove a key bottleneck for utility-scale battery storage projects: grid interconnection funding. - The capital support should help Delafield Energy move more Mid-Atlantic storage projects from development into deployment. - The effort targets rising energy and capacity needs across the region.

What happened: - Delafield Energy and Rosemawr Sustainable Infrastructure Management announced a financing partnership on Sept. 1, 2026. - The partnership focuses on funding grid interconnections for a growing portfolio of Mid-Atlantic utility-scale battery energy storage projects. - Delafield Energy Co-Founder and CEO Matt Delafield said the financing facility will help expand the company’s development pipeline. - Rosemawr Managing Director Rich Weihe said the investment supports power development and related infrastructure. - Range Renewables served as financial advisor to Delafield Energy on the transaction.

The details: - Delafield Energy is a North Carolina-based energy development company focused on solar and energy storage across the Carolinas and the Mid-Atlantic. - The company says it has developed 30 energy projects and has a pipeline of more than 2,750 MW. - Rosemawr Sustainable Infrastructure Management is the sustainable energy infrastructure arm of Rosemawr Management, a credit-focused investment management firm. - Rosemawr’s infrastructure team has invested in more than 300 energy projects across 15 states. - Rosemawr’s current portfolio includes solar, energy storage, natural gas and energy efficiency assets. - Range Renewables focuses on renewable energy transaction advisory, deal structuring and capital markets support for solar, battery storage and community solar projects.

Between the lines: - The partnership signals continued investor interest in infrastructure-backed financing for storage development. - Delafield’s emphasis on a growing pipeline suggests the company is preparing for more project activity, not a one-off transaction. - Rosemawr’s focus on flexible capital points to financing structures that can support development-stage assets rather than only fully built projects.

What's next: - Delafield Energy expects to use the facility to advance additional energy projects tied to regional grid needs. - The company indicated it wants to expand the partnership as its pipeline grows. - Range Renewables said it looks forward to supporting Delafield as the portfolio scales.

The bottom line: - The deal gives Delafield Energy a financing path for a critical early-stage hurdle in battery storage development while broadening Rosemawr’s exposure to utility-scale clean energy infrastructure. - More information: Delafield Energy - More information: Rosemawr