Operations & Maintenance Lessons: What 20+ Years in the Field Teach Us About Keeping Power Plants Running

Power plants — whether wind, solar, hydro, gas, or battery storage — are only as profitable as their uptime. A turbine that isn't spinning or a solar array that isn't producing is a stranded asset, no matter how well it was designed or built. After two decades of supporting operations and maintenance (O&M) programs across commercial, industrial, and utility-scale renewable projects, a few hard-earned lessons stand out — the kind that don't show up in a datasheet but show up in a P&L.

1. Preventive Maintenance Is Cheaper Than Corrective Maintenance — Every Time

It sounds obvious, but the numbers make the case better than any argument. A scheduled gearbox oil analysis costs a fraction of an unplanned gearbox replacement — and the replacement almost always comes with weeks of lost generation on top of the parts and labor. Asset owners who track total cost of ownership rather than just CAPEX consistently find that a disciplined preventive maintenance schedule — vibration monitoring, thermal imaging, oil analysis, torque checks — pays for itself within the first year of operation.

The mistake most new asset owners make is treating O&M as a line item to minimize rather than an investment that protects the far larger line item: the asset itself.

2. Data Without Context Is Just Noise

Modern power plants generate enormous volumes of SCADA and condition-monitoring data. The problem isn't collecting it — it's knowing which signals actually predict failure. A vibration spike on its own means little; a vibration spike correlated with a specific wind speed band, ambient temperature, and time since last lubrication cycle means a great deal.

The most effective O&M programs we've supported don't just install more sensors — they build the analytical layer that turns raw telemetry into a short, prioritized list of "what to inspect this week." Without that layer, operators either drown in false alarms or miss the signal buried in the noise.

3. The First 90 Days After Commissioning Are the Highest-Risk Window

Failure rates in the first three months of operation are consistently higher than in year two or three of a well-run asset. Infant mortality — loose connections, torque settings that weren't fully seated, control logic edge cases that weren't caught in commissioning tests — accounts for a disproportionate share of early-life downtime.

Assets that get close, structured attention during this window (daily inspection logs, tightened punch-list follow-through, rapid escalation paths to the EPC contractor) come out of it with meaningfully better long-term reliability than assets where the O&M team simply "takes over" and assumes commissioning caught everything.

4. Spare Parts Strategy Is a Risk Management Exercise, Not a Procurement Exercise

Every asset owner eventually learns this lesson, usually the hard way: the part that fails is rarely the part that was in stock. Effective spares strategy starts with a criticality analysis — which components have the longest lead times, the highest failure probability, and the greatest production impact if unavailable — rather than simply stocking what the OEM recommends as a default list.

For remote or off-grid sites in particular, lead time is often the real enemy, not part cost. A $2,000 part that takes 12 weeks to airfreight can cost far more in lost generation than a $20,000 part with a spare sitting in a regional warehouse.

5. Documentation Discipline Is a Reliability Multiplier

Technicians rotate. Contractors change. Institutional knowledge that lives only in one senior technician's head is a single point of failure just as real as a faulty transformer. Assets with rigorous documentation — as-built drawings kept current, every corrective action logged with root cause, every setting change recorded — recover from unfamiliar faults faster because the next technician isn't starting from zero.

This is one of the most underrated aspects of asset management: the value isn't just in doing the maintenance correctly, but in making sure the next person doesn't have to rediscover what was already learned.

The Bottom Line

None of these lessons are exotic. They're the product of paying close attention across hundreds of maintenance cycles, dozens of commissioning periods, and more than a few hard lessons about what happens when preventive maintenance gets deferred one quarter too many. The plants that perform best over a 20-25 year asset life aren't necessarily the ones with the newest technology — they're the ones where operations and maintenance is treated as a core engineering discipline, not an afterthought.