Dual-Fuel Generator Financing

The terminology trips people up constantly: dual-fuel and bi-fuel describe overlapping but distinct technologies, and buying the wrong one for your application is an expensive mistake. Both run diesel alongside a gaseous fuel. Bi-fuel typically refers to a diesel-first engine that injects gas through the air intake, using diesel as the pilot ignition source. Dual-fuel more commonly refers to dedicated dual-fuel engines designed from the factory to switch between two fuels completely, or to gas-first engines that fall back on diesel when gas pressure drops. The distinction matters for emissions compliance, warranty coverage, and reliability under edge conditions.

In practice, many buyers and dealers use the terms interchangeably, and the financing works the same way regardless of which architecture you're purchasing. What we care about is the generator frame, the prime mover manufacturer, and whether the system is a factory configuration or a field retrofit. We fund both. $50,000 minimum, B and C credit considered, one to two weeks to funding for most deals.

Dual-fuel systems make the strongest case in applications where the primary fuel is natural gas or propane and diesel provides emergency backup capacity, or in remote industrial settings where both diesel and wellhead gas are available on-site. Think oil and gas facilities in the Permian Basin or Appalachian gas fields, where flare gas or pipeline gas is practically free compared to hauled diesel.

Factory dual-fuel generators are purpose-built: the engine block, fuel system, and controls are designed from scratch to handle both fuels. Caterpillar's G3500 series can be configured in a dual-fuel variant. Several Waukesha and Jenbacher platforms are explicitly dual-fuel or gas-primary with diesel backup capability. These units are generally more expensive than equivalent diesel-only sets, but they carry OEM warranty coverage on the complete fuel system and avoid the residual-value uncertainty of field retrofits.

Field-converted dual-fuel systems use a conversion kit installed on a production diesel engine. The quality varies significantly by installer and by kit supplier. A well-executed conversion on a CAT 3516 or Cummins QSK series engine can perform reliably for years. A poor conversion, or one done on an engine that's seen heavy hours before conversion, creates warranty voids and reliability concerns. When we're evaluating a used dual-fuel unit, we want to know who did the conversion, when, and whether there's a service record since installation.

The paralleling-capable dual-fuel sets, where multiple units are synchronized to a common bus, represent the most complex and highest-value installations. A 2 MW paralleled dual-fuel power island for an off-grid industrial facility can involve $1 million or more in equipment. These deals require full financial documentation but are very much in our lending scope.

Dual-fuel generators often sit on industrial sites where they've been paid off over time and now represent unencumbered equity. A 1,000 kW Caterpillar dual-fuel set in good operating condition can be worth $300,000 to $600,000 on the used market, depending on hours and configuration. If that asset is sitting on your balance sheet with no loan against it, a sale-leaseback converts that equity into working capital without removing the generator from service.

The mechanics: we appraise the set (or use an agreed-upon market value from a recent dealer quote), fund you 70 to 85 percent of appraised value as a lump sum, and lease the equipment back to you on a multi-year term. The monthly payment is typically lower than a comparable bank loan because we're not overstructuring the deal with fees. You continue operating the generator exactly as before. At the end of the lease, you buy it back for a nominal residual or refinance again.

Cash-out refinancing works similarly if there's an existing lien: we pay off the current lender, restructure the balance at current terms, and in some cases advance additional cash if the equipment's value exceeds the payoff. Check our page on cash-out equipment refinancing for the full structure.

Deal size for dual-fuel purchases typically runs $100,000 to $1,000,000 depending on kW rating and configuration. Most of our dual-fuel transactions land between $150,000 and $500,000. At these levels, application-only processing (no tax returns, no financial statements) handles deals up to approximately $400,000. Above that threshold, two years of business tax returns and a current balance sheet enter the picture.

Terms run 24 to 84 months. Dual-fuel equipment generally holds value well because the resale pool of buyers is industrial operators who need exactly this capability, and the supply of factory-configured dual-fuel sets from major OEMs is limited. Longer loan terms on this type of equipment carry less residual-value risk than you'd see on, say, specialty machinery with a narrow buyer pool.

We structure these as equipment loans, dollar-buyout finance leases, or operating leases depending on your accounting and tax priorities. A Section 179 deduction on a dual-fuel generator purchase can significantly reduce the after-tax cost of the transaction in the year of acquisition, which affects whether a loan or lease is the better structure. We can run both scenarios before you sign anything.

Give us the kW rating, fuel configuration (factory or retrofit), and intended application. We'll quote the same business day. $50,000 floor, B and C credit OK, funded in one to two weeks on clean files.