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Our Company

Alterra Power Systems provides backup power solutions for the utilities, telecommunications, transportation and government industries. With 45+ years of customer success with Palmer Johnson Enterprises backing them up, Alterra is no ordinary startup company. The team at Alterra is here to guide you through every step of your project including from project scoping to preventative maintenance.

Hamilton Power Solutions

Founded in 1954 as Hamilton Engine Sales, Hamilton Power Solutions has 60 years of experience applying gaseous and diesel engines to any application requiring a turning shaft. Markets include, agricultural, construction machinery, welders, compressors, material handling, pump/irrigation, forestry and mining. Hamilton Power Solutions is a trusted distributor of Deutz, Isuzu, and Scania diesel engines.

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  • Logo deutz color
  • Logo isuzu diesel color
  • Logo scania color

Palmer Johnson Power Systems

Palmer Johnson Power Systems, founded in 1977, specializes in servicing and supplying components for heavy-duty, off-highway powertrain solutions, including transmissions and axles. The company currently operates seven sales and service branches across North America with more than 160 dedicated employees. Palmer Johnson is the authorized distributor and service center for leading off-highway manufacturers including Twin Disc, ZF Off-Highway, Dana Spicer, Carraro, Funk, Wichita, Eaton Airflex and more. Palmer Johnson also operates volume OEM transmission and axle re-manufacturing programs out of the company's Madison, Wisconsin, headquarters for equipment manufacturers including John Deere, Caterpillar, AGCO and CNH.

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  • Logo twindisc color
  • Logo funk black
  • Logo zf off highway color
  • Logo spicer color

Palmer Johnson Enterprises

The 150-strong team at Palmer Johnson Enterprises spans three companies: Palmer Johnson Power Systems, Hamilton Power Solutions, and Alterra Power Systems, all serving the off-highway market with powertrain and engine solutions. We’re a passionate company focused on two core objectives: making Palmer Johnson a genuinely great place to work and providing customers with unmatched, world-class service.

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Experience the Alterra Difference

The Alterra Experience