Prime Group Partners With Wunder for Solar Infrastructure Deployment Across Self Storage Portfolio

First systems across Prime Group’s national self-storage portfolio complete interconnection and begin delivering clean, affordable power to local communities

Advances Prime Group’s sustainability initiatives through the expansion of on-site solar facilities

BOULDER, Colo. & SARATOGA SPRINGS, N.Y.--(BUSINESS WIRE)--Wunder, a category-defining provider of commercial energy solutions, today announced the first phase of its national solar deployment program in partnership with Prime Group Holdings LLC (together with its affiliates, collectively “Prime Group”), a vertically-integrated private equity real estate firm focused on self-storage, has completed interconnection and is beginning to go live. The milestone marks the launch of a portfolio-wide initiative designed to turn underutilized rooftop space across Prime Group’s self-storage portfolio into productive clean energy infrastructure.

Through the partnership with Wunder, Prime Group is programmatically deploying the solar energy systems it owns across its national Prime Storage portfolio, with Wunder providing ongoing management of the systems. The program reflects Prime Group's active approach to ownership, based on identifying opportunities across its properties that are intended to enhance asset performance, create incremental property-level revenue, reduce operating costs, and support the communities in which it operates. Initial deployments include projects in Rhode Island, Connecticut, California, and Maryland, where rooftop solar systems are being brought online, demonstrating how self-storage facilities can serve as practical, distributed energy assets, while avoiding new land development.

Many of the projects utilize state-based Community Solar programs, which can allow power generated from Prime Group's rooftops to be delivered to local residents at a discount to utility rates, with additional savings available for low- and moderate-income households. By leveraging its rooftop assets, Prime Group expects the program to facilitate lower energy costs for participating households while generating energy savings for its own operations.

“We believe on-site energy infrastructure has emerged as a compelling value creation strategy,” said Robert J. Moser, Founder, Principal, and Chief Executive Officer of Prime Group. “As a longtime innovative owner and operator in the evolving self-storage sector, we are focused on initiatives that we believe can enhance asset performance and generate incremental income over time. This strategic partnership with Wunder supports the delivery of clean power to the communities we serve, and supports our long-term portfolio strategy and broader strategic objectives.”

Wunder's national solar deployment strategy for Prime Group’s portfolio is driven by local utility programs and regulations, state-level incentives, and property-specific considerations. Each participating asset is systematically evaluated to identify an appropriate solution intended to support asset performance, support sustainability objectives, and create measurable community benefit. Across Prime Group's portfolio of more than 330 assets, more than 100 projects are under development across nine states, totaling more than 38 megawatts of solar development.

“We are honored to work with Prime Group’s forward-thinking team, who share a commitment to sustainability and operational excellence,” said Dave Riess, Chief Executive Officer of Wunder. “For self-storage operators, solar can present an opportunity to accelerate clean energy adoption while potentially reducing operating expenses. We look forward to leveraging our expertise in energy infrastructure to build a strong partnership with Prime Group and support additional long-term value creation across their portfolio for years to come.”

As additional systems are energized, Prime expects the program to contribute to reduced carbon emissions, expand access to renewable energy, and reinforce the role commercial real estate can play in advancing practical, community-focused sustainability solutions.

About Wunder

Wunder is a leading provider of enterprise-grade energy solutions for the commercial real estate market. Some of the nation’s largest and most sophisticated real estate firms and Fortune 500s rely upon Wunder to develop and programmatically execute energy strategies across their real estate holdings. Proprietary technology, market expertise, and best-in-class financing partners enable Wunder to seamlessly unlock renewable energy’s financial and ESG benefits, while delivering an exceptional client experience. Wunder’s mission is to accelerate America’s clean energy future by tackling the largest opportunity to drive down U.S. carbon emissions - the commercial and industrial sectors. To learn more, visit www.WunderPower.com.

About Prime Group

Prime Group is a vertically integrated real estate private equity firm focused on self-storage, managing approximately $7 billion in gross asset value on behalf of a global institutional investor base. Headquartered in Saratoga Springs, NY, with additional corporate/originations offices in Jupiter, FL, Denver, CO, New York, NY, Calgary, Alberta, and Hackensack, NJ, the firm employs approximately 800 professionals, including over 150 corporate employees. The team has developed a scalable operating program that manages the full cycle of property sourcing, acquisition, financing, property management, marketing, brand development, construction, revenue management, asset management, information technology, legal, compliance, human resources, and investor relations. As of June 30, 2026, Prime owns over 330 storage facilities in 28 states, 3 Canadian provinces and the Caribbean Islands. For more information, please visit www.goprimegroup.com.