Can solar panels reduce self-storage operating expenses?

Yes. Energy is one of the few operating lines an owner can move directly: solar offsets the facility's utility spend and, under state community-solar programs, can turn rooftop capacity into a revenue line. Prime Group is deploying 38+ megawatts across 100 facilities; Public Storage is expanding a 44-megawatt program in Northern Illinois.

How much does it cost to put solar on a storage facility?

The structure decides the math — owned panels versus a power purchase agreement, roof condition, and state incentives all change the number. The discipline is to price the offset against the facility's actual utility spend before signing anything. There is no universal figure, so we don't publish one.

What is community solar for self-storage?

A state-facilitated program where a facility's rooftop generation is sold to residents at a discount, with extra savings for low- and moderate-income households. It converts a cost center into a revenue line. It's how Prime and Public Storage are structuring their deployments.

Is solar a reason to buy a self-storage facility?

No. Solar is a margin lever, not a deal thesis. Underwrite the deal on its own merits — rent roll, T12, county call, expense ratio at 35–40% — and treat energy savings as upside on top, only after the numbers work.

Solar on Storage Roofs: The Opex Line You Can Actually Move

The news, with the numbers

September 10. Prime Group Holdings, the operator behind Prime Storage, announced solar across its portfolio of more than 330 facilities. Phase one: 100 facilities, 38+ megawatts, nine states. First installations in California, Connecticut, Maryland and Rhode Island. Prime manages 27.2 million square feet and $7 billion in assets. The partner is The Wunder Co., a commercial solar firm out of Boulder (Inside Self Storage / Businesswire, Sep 10).

Here's the part that matters for underwriting. Many of these projects sit inside state community-solar programs: the rooftop generates power, residents subscribe at a discount, and low- and moderate-income households get extra savings. Prime's CEO frames it in plain operator language: "onsite energy infrastructure has emerged as a compelling value-creation strategy," with the goal to "enhance asset performance and generate incremental income over time."

It's not one operator's experiment. Public Storage, the biggest REIT in the category, is expanding its community-solar program in Northern Illinois: 60 rooftop projects with ComEd and Solar Landscape, 44 megawatts, an estimated $750,000 a year in electricity-bill savings for subscribers, and a stated plan to grow toward 1,300 properties by the end of 2026 (Inside Self Storage, Jul 30). Private operator, largest REIT, same mechanism.

The belief we've held all along

The two silent killers are taxes and insurance. You call the county on taxes. You shop the renewal on insurance. But the third line — energy — is the one you actually control, and it's real money on the P&L. The expense ratio discipline (35–40% of gross potential rent) is won on the controllable lines. You can't talk the assessor down by a point and a half. You can move the utility bill.

The mechanism, named

Solar changes a storage P&L three ways:

1. It offsets the facility's own utility spend. Lights, climate control, gate power — the bill goes down, NOI goes up.

2. Community-solar programs turn the roof into a revenue line. Power sold to residents at a discount is income on top of the rent roll — a cost center wearing a second job.

3. It hedges the facility against rising utility rates. Rate hikes become someone else's problem for the life of the system.

And what it isn't: a deal thesis. Solar doesn't fix bad underwriting, doesn't fix an empty market, doesn't cover a tax reassessment. It's a margin lever. Run the numbers on the lever, then run the deal on its own merits.

The honest limits

Community-solar programs are state-by-state; the first four states — CA, CT, MD, RI — tell you where the programs live. Roof condition, panel ownership, PPA versus outright purchase, who carries the maintenance: the structure decides the math. And we're describing what operators are doing, not promising what any roof will earn you. What happened at Prime's portfolio is not a projection for yours.

The bottom line

It's not about how much you make, it's about how much you keep. Energy is the line you can move.

Pull the utility line off the T12. Get the rate per kWh. Price the system or the PPA against the offset. Check whether your state runs a community-solar program. Then call the county on taxes, shop the insurance renewal, and run the whole thing again. Run the numbers.

Run the numbers

Past performance is not indicative of future results. Figures in these posts are historical results for those specific deals or the cited industry data, not projections, and nothing here constitutes investment advice. The math that decides a deal is the math you do before you sign — underwrite it yourself, or have someone you trust walk it with you.