Peterson Power Systems serves Northern California, western Oregon, and southern Washington, providing Caterpillar diesel and ... natural gas engines for power generation, as well as industrial, temperature control, and marine applications. Peterson is also your dealer for the Cat UPS system, switchgear, fuel cells, and other electrical accessories. For over 75 years, Peterson has been supporting owners of heavy-duty diesel engines with parts and service, second to none. We are committed to making sure that you get the most out of every Caterpillar Power System you own. In addition to repair and maintenance on power systems of virtually any make and model, we offer rental power equipment as well. read more