By Julia Park, co-owner/commercial O&M sales specialist, Namaste Solar
So, you’ve purchased a commercial property with solar panels on the roof. Now what?
Maybe the system is freshly commissioned and quietly producing clean energy—or maybe it’s been sitting idle since 2008, now serving more birds than kilowatt-hours.
Whether you’re experienced with solar or brand new to it, you’ll want to ensure that this system—likely part of what you paid for—is functioning properly and supporting your bottom line. A well-performing solar array can reduce utility costs, increase resale value, and support your property’s sustainability goals. But just like any energy system, it needs regular care to deliver on that promise.
At Namaste Solar, we often work with property owners who’ve inherited solar after a real estate transaction. In many cases, no one has looked at the system in years. Here’s what you should know if you find yourself in this situation.
Inspect Before You Invest
Ideally, the solar system should be evaluated before closing on the building—but many property transactions skip this step. Don’t assume the presence of solar equals instant savings.
Start with a professional inspection from a qualified solar Operations & Maintenance (O&M) provider. A thorough inspection includes both electrical and mechanical checks: inverters, wiring, module condition, and overall system performance. The goal is to compare actual energy output with expected performance and flag any needed repairs or upgrades.
Namaste Solar often conducts these inspections in tandem with roof evaluations, helping buyers determine whether their rooftop solar is an energy asset or a deferred maintenance liability.
Why Solar Is Worth the Effort
When maintained, solar pays off—big time. Over a system’s 25- to 30-year lifespan, energy savings can add up to hundreds of thousands of dollars. Studies show that regularly serviced systems deliver 10–30% more value than neglected ones.
Solar can also boost property value and appeal to sustainability-minded tenants or buyers, especially here in Colorado where clean energy is a growing priority.
Repair, Replace, or Decommission?
Once you understand the system’s condition, your O&M provider can help you choose the right next step.
If your system only needs minor repairs—like tightening wiring or replacing a few panels—you’re in good shape. But if the equipment is outdated or the original manufacturer is out of business, you may need to consider a retrofit, or “repower.”
This could include replacing inverters (which usually last 10–15 years), upgrading panels, or updating wiring to meet current code. These changes may trigger new permitting or fire code compliance, so it’s important to work with a provider familiar with local regulations.
In some cases, the cost of repairs may outweigh the benefits. If the system is too degraded or incompatible with new technology, it might be time to decommission it. A reputable O&M provider can safely remove and recycle old equipment—and even help you plan for future solar installation when conditions are right.
Keep It Running: Maintenance & Monitoring
Once your system is in working order, keep it that way. Like HVAC or roofing, solar systems need regular upkeep. Temperature changes cause metal components to expand and contract, loosening bolts and stressing conduit. Dust, debris, and wildlife can also impact performance.
Annual or bi-annual checkups can catch issues early, before they reduce your energy production—or cost you money. Infrared cameras, drone imaging, and system monitoring tools help technicians quickly detect and resolve problems.
Preventative maintenance is the best way to protect your return on investment and avoid surprise repair bills down the road.
Solar Should Work for You
Whether you inherited solar with your building or are planning a new installation, treat it like the energy infrastructure it is. Solar belongs in your operations budget—right alongside heating, cooling, and roofing.
Partner with a trusted local O&M provider, like Namaste Solar, who understands Colorado’s building codes, climate, and energy landscape. It’s the smartest way to make sure your solar system works for you—not against you—for years to come.
Author bio: Julia is committed to ensuring the long-term sustainability of solar energy. With extensive experience coordinating preventative maintenance and repairs for commercial systems, she aims to empower customers with a clear understanding of the technical aspects of PV maintenance and best practices.
