Our Backup Generator Failed in a Storm—Then the Real Challenge Began

The morning we lost power (and my credibility)

January 10, 2024. An ice storm knocked out power to our office park at 6:40 a.m. I know the exact time because the facilities manager called me at 6:42. Our backup generator—a 12-year-old unit—had tried to start twice and failed both times. We sent 30 employees home by 9 a.m. and put a dozen more up in a hotel that night.

My VP caught me in the hallway the next morning. "How much to fix this?" she asked. Not if we should fix it. How much.

I've been the purchasing administrator here since late 2021. I handle roughly $600,000 in annual spend across about 8 vendors—office supplies, janitorial, IT hardware, and the miscellaneous maintenance contracts that nobody else wants to own. I report to both operations and finance, which means I get pressure from two directions on every decision. Generators were not my area. But suddenly they were.

What I actually needed (and didn't know I needed)

We run three sites: the main office (420 employees), a distribution warehouse about 12 miles away, and a small dock facility on the river where we host client events—our company owns a 32-foot boat that we use for customer demos. That detail matters more than I expected.

My first call was to our electrical contractor. He walked the main office and told me we needed somewhere in the 80kW range for standby power. He gave me three names: Kohler, Generac, and Cummins. I'd heard of all three, but I had no idea how to compare them beyond price.

Here's where I made my first real mistake. I treated this as a single-facility problem. I focused entirely on the main office generator and figured I'd deal with the other sites separately when the time came. In hindsight, that was exactly backwards.

While gathering quotes for the main office—a Kohler SDMO diesel generator ended up being the recommendation from our contractor, mainly because of the dealer support network in our region—I started getting questions from the other departments. The warehouse manager mentioned that two of their forklift chargers were failing and they needed a 48V forklift battery charger before Q2. The dock manager asked whether we could look at the marine generator on the boat, which hadn't been serviced properly in years—turns out it was a Kohler 5E marine generator that was probably due for a replacement. And my maintenance lead asked if we could budget for a portable unit so his team wasn't stuck running extension cords during small outages.

Meanwhile, I was trying to sort out a quote for a 4500 watt inverter generator dual fuel option for the maintenance crew (they wanted something they could run on gasoline or propane without dragging a diesel trailer around). I remember sitting at my desk with four browser tabs open—one for each facility—thinking, this is not one project. This is four projects that happen to share a purchase order.

The part nobody quoted

We went with the Kohler SDMO for the main office. Installation was scheduled for early March. I felt pretty good about it—the dealer was responsive, the lead time was reasonable (about six weeks), and the financing terms worked for our CFO.

Then the generator arrived. And the commissioning tech found a problem during the initial load test.

He pulled me aside. "When was the last time anyone tested the fuel quality in your tank?"

I had no idea. The tank was original to the building—probably 15 years old. We'd never had it tested. The tech explained that degraded diesel can clog the fuel system, and the injectors on the new unit were already showing signs of fouling from the first tank of fuel. He gave me a quick rundown of how a fuel pump vs fuel injector issue plays out: the pump delivers fuel pressure, but the injector handles timing and atomization. If the fuel is bad, the injectors clog first, and the engine either won't start or runs rough. That's when I realized the old generator's "starter problem" might not have been the starter at all—it might have been a fuel quality issue that nobody caught.

"You can spend $80,000 on a new unit and still be down if the fuel in the tank is bad," the tech told me. "We see this all the time. The generator gets blamed for a fuel problem."

We ended up paying for a tank cleaning and fuel polishing service—about $2,400—plus a two-week delay while we waited for the service crew to fit us into their schedule. The injectors had to be cleaned and recalibrated. I had to explain the delay to my VP, who was not thrilled. I also had to explain it to the warehouse manager, who was waiting on the 48V forklift battery charger delivery that I'd bundled into the same vendor relationship, and to the dock manager, who was still waiting on a decision about the Kohler 5E replacement.

That two-week window was miserable. Every morning I checked my email expecting another delay notice. I second-guessed the whole approach—maybe I should have replaced the tank first, maybe I should have split the projects, maybe I should have brought in a fuel consultant before signing anything.

What I'd do differently (and what I'm glad I did)

Here's the thing: the project eventually came together. The main office generator passed its final load test about three weeks later. The 48V forklift battery charger got installed at the warehouse in April. We replaced the Kohler 5E marine generator at the dock in May—turns out the boat's electrical system needed some rewiring anyway, so the timing worked out. And the 4500 watt inverter generator dual fuel unit is now sitting in the maintenance bay, and it's already gotten us through two short outages without anyone hauling out extension cords.

But the fuel quality issue was a wake-up call. I only believed the tech after we ate the $2,400 cleaning bill and the two-week delay. Everyone told me to test the tank before installing new equipment. I didn't listen. Now I verify fuel quality before any generator commissioning—no exceptions.

Two other things I'd change:

• I should have run all four purchases as one equipment assessment instead of treating them as separate projects. The shipping alone would have been cheaper if I'd coordinated deliveries. And I could have negotiated better terms with the dealer by bundling the Kohler generator, the forklift charger, and the marine unit into one conversation.
• I should have brought maintenance into the planning from day one. My maintenance lead knew the fuel tank was old. He'd been dealing with the old generator's "starting problems" for two years. I never asked him because I assumed he'd tell me if it was important. That's not how it works—he assumed I knew.

To be fair, the dealer was helpful once we got the diagnosis. They could have just said "not our problem" and moved on. Instead, their service tech walked me through the fuel system and even gave me a maintenance checklist for the new unit. I'm not 100% sure I would have extended the maintenance contract without that conversation, but it definitely made the decision easier.

The lesson, if you can call it that: the expensive part of a generator isn't the generator. It's everything around it—the fuel, the tank, the wiring, the maintenance schedule, the people who know the quirks of your building. If you're replacing equipment, ask about the infrastructure it sits on before you sign anything. Prices are from January 2024 and will vary by region and vendor—verify current rates with your contractor before budgeting.