VOLT hybrid locomotive solution validated for mine rail use

Dayton-Phoenix Group (DPG) says the VOLT hybrid locomotive solution has completed testing as a retrofit option to reduce fuel use and emissions while keeping existing diesel locomotives in service, as reported by IM Mining.

Built to integrate with conventional diesel-electric locomotives, the hybrid locomotive power solution adds supplemental electric power during high-load events—acceleration, climbing grades, and moving heavy consists.

This is reported by the railway transport news portal Railway Supply.

DPG says the programme delivered stable operation, predictable load sharing, and measurable reductions in diesel engine loading, which the company links to rail-intensive mining rail operations where uptime and reliability matter.

VOLT hybrid locomotive solution and how the retrofit works

DPG positions VOLT as a retrofit-ready hybrid solution intended to work with locomotives as they exist today. That contrasts with new-build battery-electric locomotives, which the company notes can require large capital investment and infrastructure changes.

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In the same context, DPG points to the operating realities on mine railways—heavy loads, frequent starts and stops, steep grades, remote locations, and long asset-life expectations.

The company says its most recent validation work was carried out at the MxV facility in Colorado, USA, where the subsidiary of the Association of American Railroads conducts railroad equipment testing and training for member railroads, as described on the Association of American Railroads’ MxV Rail overview. DPG says testing in that environment helps confirm how the system behaves under real rail duty profiles.

Why mining rail operations are a key target?

“Many mining operations rely on rail as a backbone of material movement—whether that’s captive mine railroads or mine-to-port operations,” said Jacob Dahle, Head of Sustainability and Growth at DPG. He said VOLT was developed specifically for these real-world rail applications, giving mines and other industrial rail users a way to reduce fuel burn and emissions without replacing locomotives or disrupting operations.

DPG adds that decarbonisation efforts in mining need to remain aligned with production targets and capital stewardship. On that basis, the company says the VOLT hybrid locomotive power solution is intended to make emissions reduction compatible with operational priorities rather than a trade-off.

What testing validated at MxV in Colorado?

According to DPG, testing validated VOLT’s ability to reduce diesel fuel consumption during high-load duty cycles, lower greenhouse gas emissions as a direct by-product of improved efficiency, support demanding mine-site rail profiles without compromising reliability, and extend the useful life of existing locomotive assets. The system’s concept and intended use are also set out on the official Dayton-Phoenix Group VOLT product page.

“For mining operators, success is measured in tonnes moved, uptime maintained and dollars saved,” said John Gordon, Chief Commercial Officer of DPG. He added that VOLT aligns emissions reduction with those priorities, making sustainability a performance advantage rather than a tradeoff.

With testing now completed, DPG says it is progressing discussions with rail operators, mining operators, and industrial rail users on potential pilot deployments and site-specific evaluations focused on mine rail applications.

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