If you choose on brochure numbers, you risk a gas block that burns more fuel than expected, a business case that falls apart in year one and lenders who lose faith in your forecasts. Wrong assumptions here mean lost margin every hour the plant runs.
USP&E Helps You Compare on Real Numbers
If the control philosophy is not rewritten, diesel and turbine governors fight each other, load swings between machines and protection trips healthy units. That means instability, outages and a costly new turbine that cannot be trusted to carry your station.
Treat Heat Rate as a Comparison Gate
Utility and mining baseload programmes fail when fuel letters arrive after iron is already on a vessel. Bring supplier letters, viscosity grades, heating medium constraints, and unloading method into the first design-basis workshop alongside ambient data and one-line diagrams. USP&E Extreme Ownership treats fuel receipt as station scope, not a commercial afterthought. Unique copy will, heat rates, or committed calendars — those stay project-specific after engineering and qualification.
Then model the gas options at the same duty. Your gas turbine generators lose efficiency at part load and on hot days, and frequent starts add fuel and maintenance. Ask suppliers for performance curves across load and ambient ranges, not just the full-load rating, and apply them to your real load profile.
Set clear boundaries for the comparison: whether auxiliaries, fuel treatment and gas compression are included, and which fuel prices and escalation you assume. Unclear boundaries are the most common reason two studies disagree.
Bridge With a Remanufactured GE Frame 6B While Evidence Matures
If you need capacity before the comparison is complete, a remanufactured GE Frame 6B can run as a bridge and give you real gas operating data on your site. Meter it carefully from the first day, so its actual fuel use informs your decision on permanent plant. Check inspection records and controls status first.
Natural gas engines often perform well at part load and are a strong option for variable duty. Comparing used or new gas turbines and engines on measured fuel use, maintenance and availability gives you a decision based on evidence.
Keep your diesel metering running throughout. A side-by-side record of diesel and gas units on the same days and loads is the most persuasive evidence you can give your board and lenders.
Phase Toward Modular FX-45 Beside Your Diesel Halls
If your site may later supply AI gas turbines, hyperscale generators or gas turbines for compute, fuel economy at scale becomes even more important. Use the measured baseline you build now to evaluate every future block on the same terms.
Keep protection studies live as your plant grows. Every modular FX-45 block you add changes fault levels and coordination, so your settings file should be updated and re-tested at each phase rather than only at first handover.
Proof from recent work
Mining · Tanzania
Perseus Mining, Nyanzaga Gold Project
USP&E supplied 28 Cummins KTA50 containerised gensets for the Nyanzaga Gold Project in Tanzania.
Mining · Mali
Barrick Gold, Loulo-Gounkoto
USP&E refurbished the 104 MW power station, rebuilding more than 80 MW of Caterpillar CM32 engines and adding new zero-hour capacity.
Read the case study ›Data centres · USA
Major US hyperscale developers
USP&E refurbished 7 GE Frame 6Bs to zero hours in-house for major US hyperscale developers.
Your path from first call to reliable power
Your 3-step plan: 1. Share your fuel records, load profile and gas options under NDA. 2. Get a measured baseline and a like-for-like turbine and engine comparison with EPC and O&M scope. 3. Build, meter and operate with fuel performance reported by one team.
- Map diesel station loads, measured fuel baselines, duty hours, and which duties can move to gas turbine generators once heat-rate comparison gates are ready.
- Design metering boundaries, comparison templates, operator training, spares, and O&M responsibilities in one matrix.
Common questions
Why compare heat rate on measured baselines instead of brochures?
USP&E compares on measured baselines because brochure figures assume full load, ideal ambient and steady running. Your station runs at part load, in heat and with frequent starts, so only metered fuel use at your real duty gives a fair comparison between diesel and gas options.
How is a diesel station’s fuel baseline measured?
USP&E measures a fuel baseline with calibrated fuel and power meters over representative weeks, recording load, ambient temperature and units running. The result is fuel per kilowatt-hour at the loads you actually run, which becomes the reference for every gas option.
Can a remanufactured GE Frame 6B provide real gas performance data?
USP&E often uses a remanufactured GE Frame 6B as bridge capacity that also produces real operating data on your site. Metered from the first day, its actual fuel use shows how gas performs at your duty, helping you decide on permanent plant with evidence.
What boundaries should a heat-rate comparison define?
USP&E defines whether auxiliaries, fuel treatment, gas compression and start-up fuel are included, plus the fuel prices and escalation assumed. Clear boundaries let your board and lenders compare options fairly and stop competing studies from reaching different answers for the same plant.
Why owners choose USP&E
USP&E is a full-service engineering, EPC and O&M company, not a broker. One team designs, builds and runs your plant, so nothing falls between contracts.
Is your fleet putting uptime at risk?
Tell us your load, fuel and timeline. A USP&E engineer will come back with options for Diesel Power Station projects, not a sales pitch.