National Power Supply Sells- Diesel Engines: Re-Manufactured, Used, New and Hard to find Diesel Engines. Passenger truck, Over the Road, Industrial, Off Highway, Marine and Commercial applications. Diesel Generators: Industrial, Commercial, Residential, Marine. Primary Continuous or Emergency Backup Power Generators. Saving You Money, Time and Concern! Industrial and Commercial Diesel Engines Construction, Mining, Oil Fields, Agriculture, Farming, Forestry, Rail & Locomotive, Marine Freight, Commercial Marine, Commercial and Sport Fisheries. Caterpillar, Cummins, Detroit Diesel, Ford, GM  200 to 10,000 Horsepower Engines Diesel Engines Power Business and Industry! ReManufactured/ Rebuilt, New, Used, Hard to Find Power Generation , Primary, Continuous or Back Up Power Emergency planning. National Power Supply sells Diesel Powered Generators at Great Pricing to Businesses, Industry and Residential! Business and Industry rely on Power Generators for Remote Continuous Power and Emergency Power Backup Planning! Primary or Remote Continuous Diesel Power Generators provide for needs of Construction, Industry, Marine, Mining, Oil Fields, Forestry, Agriculture, Farming, Health Care and more when Utility power is not available! . Power Generators for Emergency Power Backup can Save Your Business! Every business has been effected by Power Outage, whether from Accidents, Grid Overloads and Blackouts, Rolling Blackouts, Storms to Natural Disaster from hours, days or months! See our Power Generators page for types and information. 15KW to 3MW and larger systems and parralled systems. Diesel, NG, LPG.