My name is Rachel. I'm the office administrator for a 35-person architecture firm in Denver. I manage all our facility and equipment purchases—roughly $185,000 annually across 15 vendors. I report to both operations and finance.
That's my official job description. But here's my unofficial one: I'm the person who gets blamed when things don't work. And in May 2024, something definitely didn't work.
Piece of advice: get very familiar with power storage systems before your building's power goes out. Not during. Trust me on this one.
The Day Everything Stopped
It was a Tuesday. Fine spring morning. I was halfway through approving a purchase order for new drafting monitors when the lights flickered. Then went dark. Then came back on for about three seconds.
That was the power grid playing games with us.
I figured we'd be back up in an hour or two. These things happen, right?
I was wrong. Power came back at 4:47 PM the next day. Nearly 30 hours without electricity in a studio full of deadlines, servers, and designers who physically cannot work without their computers.
(This was back in May 2024, for context. We'd had some storms. But nothing that would make you think, hey, maybe we should invest in a solar battery storage system. At least I didn't think that. Not yet.)
The Cost of Being Unprepared
Here's what happened during those 30 hours:
- Our file server went down mid-autosave. Corrupted two project files. The IT recovery cost us $800.
- Four designers had to redo about six hours of work each. That's 24 billable hours—poof, gone. At our blended rate, call it $4,800 in lost productivity. (Finance tracks this stuff, unfortunately.)
- We missed a client presentation deadline. The client wasn't happy. Our project manager spent three hours doing damage control.
- I had to send everyone home at 11 AM with instructions to work remotely. Except half of them couldn't because their home setups aren't office-grade.
The vendor who couldn't provide proper invoicing cost us $2,400 in rejected expenses once. That stung. But this was worse. This was chaos.
My First Mistake: Assuming It's Not My Problem
Look, I'm an admin buyer. I buy printer toner, coffee supplies, and ergonomic chairs. Power infrastructure? That felt like a facilities engineer's job. We don't have a facilities engineer.
I knew we had backup batteries on some workstations. The IT guy had mentioned something about 'critical systems.' I assumed that meant we were covered.
People assume backup power is a solved problem. What they don't see is the gap between 'we have a UPS' and 'we can operate for a day without grid power.' That gap is where $2,400 of losses live.
From the outside, it looks like businesses just need to wait out the outage. The reality is a 30-hour blackout creates a cascade of costs—lost work, corrupted data, missed deadlines, unhappy clients. Especially for a small company that can't afford downtime.
What I Learned About Solar Battery Storage
After the blackout, operations asked me to research 'power solutions.' I figured they meant a bigger generator. But one of our senior architects—the guy who designs net-zero buildings for clients—pointed me in a different direction.
"Rachel," he said, "if you're going to spend money on backup power, don't just buy something that burns diesel. Look at photovoltaic battery storage. It pays for itself over time."
So I did. Here's what I found.
Solar Battery Storage Systems: Not Just for Hobbyists
I assumed solar battery storage was for eco-conscious homeowners or off-grid cabins. Not for a professional office. I was wrong.
A solar battery storage system captures energy from solar panels during the day (or from the grid at off-peak rates) and stores it in batteries. When the grid goes down, the system automatically switches on. We'd have power for critical systems—servers, lights, internet—for 12 to 24 hours depending on the setup.
Key components I learned about:
- Battery power pack: The core storage unit. Lithium-ion, typically. For a small office like ours, we'd need about 10-15 kWh of capacity.
- Inverter: Converts DC battery power to AC for standard office equipment.
- Solar panels (optional but recommended): If we have panels, the battery recharges during the day. Grid-tied means we can sell excess back to the utility.
- Energy management software: Monitors usage and automates switching. This was way more sophisticated than I expected.
I won't pretend I became an expert overnight. But after talking to three installers and reading about a dozen product specs, I understood enough to make a recommendation.
What About a Generator?
I asked that question. The senior architect gave me a look.
"A generator is fine for emergency backup," he said. "But for a 35-person office with daily uptime needs, a photovoltaic battery storage system gives you more flexibility. You're not buying fuel. You're not maintaining an engine. It's silent. And if you pair it with solar panels, you're generating power for the other 364 days of the year too."
I checked the numbers. A decent generator costs $5,000-$10,000 installed. A solar battery storage system with enough capacity for us runs $12,000-$18,000 before tax credits. The federal Investment Tax Credit (30% as of 2024) and Colorado's state incentives bring it into the same ballpark.
Plus, the generator just sits there until you need it. The solar system actively reduces our monthly electricity bill.
Simple.
The Real World Test
We installed a 13.5 kWh system in September 2024. Total cost: $14,200 after incentives. I submitted the proposal to finance with a two-year payback projection based on our average utility usage and the value of avoided downtime.
And then, in late November, we got another outage.
This time, the power went out for about four hours during a snowstorm. The system kicked in within 30 seconds. Servers stayed up. Lights stayed on. Designers kept working. I didn't have to send anyone home.
The only hiccup: I realized we didn't have a plan for which outlets were on the backup circuit. The break room microwave wasn't powered. Minor issue, but we fixed it.
(That's the kind of thing you only learn by doing, by the way. No spec sheet tells you which coffee maker is on backup power.)
What I'd Tell Another Admin Buyer
If you've ever had to explain to your VP why a power outage cost the company thousands of dollars, you know the sinking feeling. Here's what I learned from my $2,400 lesson:
- Don't assume you're covered. UPS units on individual computers are not the same as whole-building power storage systems. Check what you actually have.
- A solar charging station or battery pack isn't a luxury. For offices, it's an operational necessity. Downtime costs more than the equipment.
- Get a detailed quote with line items. I almost went with a lower-priced installer until I realized their quote excluded battery management software and installation labor. Always verify the total cost of ownership.
- Test the system. Don't wait for a real outage. Schedule a drill. We didn't, and we ended up with coffee-less colleagues for four hours.
I should have investigated energy solutions after the first outage. I knew I should, but thought 'what are the odds it happens again?' The odds caught up with me when that second storm hit and I was scrambling to find a portable generator. We got lucky we had the system installed by then.
Here's the thing: I'm not saying every office needs a full photovoltaic battery storage array. For a company of 5-10 people, a smaller battery power pack might be enough. But if your business depends on uptime (and whose doesn't?), you need some form of backup beyond a few UPS boxes under desks.
And if you're the person who gets the call when the power goes out—it's worth making that call before it happens. Not during.
Prices verified via EnergySage as of December 2024. Check current Colorado incentive rates at the Governor's Energy Office — things change.
