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186 products

  • Top Rated
    Briggs & Stratton 125 kW propane generator 480V

    Briggs and Stratton 125kW Standby Generator - 270/480V, 225A Breaker, Block heater and Battery charger included - 080018

    SKU: PES-PS-GEN-0108
    MPN NO

    080018

    Briggs & Stratton
    $57,886.11 USD
    $57,886.11 USD
  • Top Rated
    Briggs & Stratton 125 kW propane generator 120/240 V

    Briggs and Stratton 125kW Standby Generator - 120/240V, 450A Breaker, Block heater and Battery charger included - 080017

    SKU: PES-PS-GEN-0107
    MPN NO

    080017

    Briggs & Stratton
    $57,886.11 USD
    $57,886.11 USD
  • Top Rated
    Briggs & Stratton 125 kW propane generator

    Briggs and Stratton 125kW Standby Generator - 120/208V, 500A Breaker, Block heater and Battery charger included - 080016

    SKU: PES-PS-GEN-0106
    MPN NO

    080016

    Briggs & Stratton
    $57,886.11 USD
    $57,886.11 USD
  • Top Rated
    Briggs & Stratton 80 kW propane generator 480V

    Briggs and Stratton 80kW Standby Generator - 277/480V, 150A Breaker, Block heater and Battery charger included - 080008

    SKU: PES-PS-GEN-0105
    MPN NO

    080008

    Briggs & Stratton
    $41,374.09 USD
    $41,374.09 USD
  • Top Rated
    Briggs & Stratton 80 kW propane generator

    Briggs and Stratton 80kW Standby Generator - 120/240V, 300A Breaker, Block heater and Battery charger included - 080007

    SKU: PES-PS-GEN-0104
    MPN NO

    080007

    Briggs & Stratton
    $41,374.09 USD
    $41,374.09 USD
  • Top Rated
    Briggs & Stratton 150 kW natural-gas generator

    Briggs and Stratton 150kW Standby Generator - 120/240V, 700A Breaker, Block heater and Battery charger included - 080020

    SKU: PES-PS-GEN-0102
    MPN NO

    080020

    Briggs & Stratton
    $59,083.10 USD
    $59,083.10 USD
  • Top Rated
    Briggs & Stratton 80 kW propane generator

    Briggs and Stratton 80kW Standby Generator - 120/208V, 300A Breaker, Block heater and Battery charger included - 080006

    SKU: PES-PS-GEN-0103
    MPN NO

    080006

    Briggs & Stratton
    $36,182.18 USD
    $36,182.18 USD
  • Top Rated
    Briggs & Stratton 100 kW natural-gas generator

    Briggs and Stratton 100kW Standby Generator - 120/240V, 500A Breaker, Block heater and Battery charger included - 080010

    SKU: PES-PS-GEN-0101
    MPN NO

    080010

    Briggs & Stratton
    $42,923.31 USD
    $42,923.31 USD
  • Top Rated
    Briggs & Stratton 80 kW natural-gas generator

    Briggs and Stratton 80kW Standby Generator - 120/240V, 350A Breaker, Block heater and Battery charger included - 080080

    SKU: PES-PS-GEN-0100
    MPN NO

    080080

    Briggs & Stratton
    $36,361.00 USD
    $36,361.00 USD
  • Top Rated
    Generac 40KW 4.5L 208/240/480 3P NG-LP AL EMS | Portlandia Electric Supply

    Generac 40KW 4.5L 208/240/480 3P NG-LP AL EMS

    SKU: PES-PS-GEN-00172
    MPN NO

    XG04045CNAC

    Generac
    $20,737.43 USD
    $20,737.43 USD
  • Top Rated
    Generac 40KW 4.5L 208/240/480 3P NG-LP AL | Portlandia Electric Supply

    Generac 40KW 4.5L 208/240/480 3P NG-LP AL

    SKU: PES-PS-GEN-00171
    MPN NO

    XG04045CNAX

    Generac
    $23,641.62 USD
    $23,641.62 USD
  • Top Rated
    Generac 40KW 4.5L 120/240 1P NG-LP AL EMS | Portlandia Electric Supply

    Generac 40KW 4.5L 120/240 1P NG-LP AL EMS

    SKU: PES-PS-GEN-00170
    MPN NO

    XG04045ANAC

    Generac
    $24,619.66 USD
    $24,619.66 USD
  • Top Rated
    Generac 40KW 4.5L 120/240 1P NG-LP AL | Portlandia Electric Supply

    Generac 40KW 4.5L 120/240 1P NG-LP AL

    SKU: PES-PS-GEN-00169
    MPN NO

    XG04045ANAX

    Generac
    $17,212.55 USD
    $17,212.55 USD
  • Top Rated
    Generac 32KW 4.5L 208/240/480 3P NG-LP AL | Portlandia Electric Supply

    Generac 32KW 4.5L 208/240/480 3P NG-LP AL

    SKU: PES-PS-GEN-00168
    MPN NO

    XG03245CNAX

    Generac
    $17,630.40 USD
    $17,630.40 USD
  • Top Rated
    Generac 32KW 4.5L 120/240 1P NG-LP AL | Portlandia Electric Supply

    Generac 32KW 4.5L 120/240 1P NG-LP AL

    SKU: PES-PS-GEN-00167
    MPN NO

    XG03245ANAX

    Generac
    $19,961.62 USD
    $19,961.62 USD
  • Top Rated
    Generac 80kW, 1800rpm, Alum Enclosure (Not for sale in CA/MA) | Portlandia Electric Supply

    Generac 80kW, 1800rpm, Alum Enclosure (Not for sale in CA/MA)

    SKU: PES-PS-GEN-00166
    MPN NO

    RG08045X

    Generac
    $31,673.08 USD
    $31,673.08 USD
  • Top Rated
    Generac 60kW

    Generac 60kW, 1800rpm, Alum Enclosure (Not for sale in CA/MA)

    SKU: PES-PS-GEN-00165
    MPN NO

    RG06045X

    Generac
    $21,497.64 USD
    $21,497.64 USD
  • Top Rated
    Generac 27/25 kW, 1800rpm, Alum Enclosure, SCAQMD Compliant | Portlandia Electric Supply

    Generac 27/25 kW, 1800rpm, Alum Enclosure, SCAQMD Compliant

    SKU: PES-PS-GEN-00164
    MPN NO

    RG02724

    Generac
    $14,429.08 USD
    $14,429.08 USD

Standby Generators for Automatic Backup Power

Protect your home or business with an automatic standby generator from PES Supply. Unlike portable units, standby generators are permanently installed and kick on automatically within seconds of an outage—keeping your lights, HVAC, refrigeration, and critical systems running. Shop top brands including Generac, Kohler, Briggs & Stratton, Cummins, and more.

Choose Your Power Level

  • 10kW to 26kW residential standby generators for whole-home coverage
  • 30kW to 60kW commercial and light-industrial units
  • Air-cooled and liquid-cooled options
  • Natural gas and LP fuel options
  • ATS-compatible for seamless transfer

Standby generators run on your home's natural gas or propane supply, so there's no fuel storage or refueling required. With professional installation, a Generac or Kohler standby unit can power your entire home for days or weeks during extended outages. Browse our selection by wattage to find the right size for your needs.

Browse the full selection below and order today with fast shipping from PES Supply. Questions? Our solar and backup power experts are ready to help you spec the right system—contact us.