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GenOn Energy
AddedFeb 19, 2024
UpdatedJun 18, 2026
GenOn Energy

GenOn Energy

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GenOn Energy, a defunct US corporation, was a leading power producer, supplying wholesale electricity nationwide.

HQ
Houston, TX, US
Founded
2001
Overview
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Employees
Website

GenOn Energy, based in Houston, Texas, was a prominent energy company that provided electricity to wholesale customers across the United States. Founded as RRI Energy, it acquired Mirant on December 3, 2010, to expand its operations. The company was one of the largest independent power producers in the nation, with over 7,000 megawatts of power generation capacity utilizing natural gas, fuel oil, and coal. GenOn's core mission was to deliver reliable and efficient energy solutions to meet the growing demands of the wholesale market.

Notable figures associated with GenOn Energy included its executive leadership team based at the Reliant Energy Plaza in Downtown Houston. The company achieved significant milestones in power generation capacity and market reach before becoming defunct. Its impact on the energy sector was marked by its substantial contribution to the nation's electricity supply and its role in shaping the competitive landscape of independent power production.

GenOn Energy - Quick Facts

When was GenOn Energy founded?

GenOn Energy was founded in 2001.

Where is GenOn Energy's headquarters located?

GenOn Energy's headquarters is located in Houston, TX, US.

GenOn Energy - Classification

Ownership
  • Public
Technology
  • Data
Geographic Exposure
  • United States
Revenue
  • Recurring
  • Software
Customer
  • Enterprise
Main Product
  • Electricity
  • Power Generation
NAICS
  • 220000Utilities
  • 221000Utilities
  • 221100Electric Power Generation, Transmission and Distribution
  • 221120Electric Power Transmission, Control, and Distribution
  • 221121Electric Bulk Power Transmission and Control
SIC
  • 4900Electric, Gas, And Sanitary Services
  • 4910Electric Services
  • 4911Electric Services
ISIC
  • 3510Electric power generation, transmission and distribution
Show 18 more industry codes
NAICS
  • 221110Electric Power Generation
  • 221111Hydroelectric Power Generation
  • 221112Fossil Fuel Electric Power Generation
  • 221113Nuclear Electric Power Generation
  • 221114Solar Electric Power Generation
  • 221115Wind Electric Power Generation
  • 221116Geothermal Electric Power Generation
  • 221117Biomass Electric Power Generation
  • 221118Other Electric Power Generation
  • 221122Electric Power Distribution
  • 221200Natural Gas Distribution
  • 221210Natural Gas Distribution
SIC
  • 1300Oil And Gas Extraction
  • 1310Crude Petroleum And Natural Gas
  • 1311Crude Petroleum And Natural Gas
  • 1380Oil And Gas Field Services
  • 1382Oil And Gas Field Exploration Services
  • 5000Wholesale Trade-durable Goods