The 100 largest energy companies in California

Pacific Gas and Electric Companypge.com

Transmission and delivery of natural gas and electricity to approximately 15 million customers across a large service area in California.

Southern California Edison (SCE)sce.com

A leading electric utility in Southern California focused on bringing clean and renewable energy sources to reduce emissions and promote innovation

General Atomicsga.com

Development of advanced technology solutions including unmanned aerial vehicles, research reactors, aircraft systems, MagLev transport, and fusion energy for global customers.

Sunrunsunrun.com

The company offers a modern energy experience with reliable, affordable, and clean energy made from the sun, giving customers freedom in powering their lives

Toshibatoshiba.com

A global technology company focusing on energy, infrastructure, electronics, and digital solutions to create a sustainable future for generations to come

Solar Turbinessolarturbines.com

Manufacturer of industrial gas turbines, compressors, and generator sets used in oil, gas, and power generation projects globally.

Los Angeles Department of Water and Powerladwp.com

Provide safe, reliable water and electricity services to millions of residents and businesses in Los Angeles, ensuring municipal utility needs.

Prologisprologis.com

Global leader in logistics real estate, driving innovation in building design and sustainability With massive real estate portfolio and investments worldwide

SoCalGassocalgas.com

Largest gas distribution utility serving over 21 million consumers across Central and Southern California with safe, reliable, affordable energy.

Pearce Servicespearce-services.com

Provider of repair, maintenance, and engineering services for critical infrastructure in renewable energy, power generation, and telecom industries, with tech-enabled solutions nationwide

Enphase Energyenphase.com

Global provider of microinverter-based solar and battery systems, leading the way in energy technology for a sustainable future

San Diego Gas & Electricsdge.com

provides clean, safe, and reliable energy to improve lives in San Diego and southern Orange counties with over 4,000 employees

Semprasempra.com

A leading energy infrastructure company helping to electrify and decarbonize major markets in North America through sustainable practices and operational excellence

Bloom Energybloomenergy.com

Bloom Energy provides sustainable and reliable distributed energy solutions to businesses worldwide, helping them lower costs, reduce emissions, and increase energy independence

SMUDsmud.org

A community-owned electric service provider in Sacramento County, focused on low-cost, reliable electricity with innovative energy efficiency programs and sustainable solutions

SolarCitysolarcity.com

A company acquired by Tesla in 2016, now called Tesla Energy Operations, Inc focusing on accelerating the transition to sustainable energy

LADWPladwp.com

The company delivers water and electricity to over 38 million residents in Los Angeles, with a budget of billions for operations and capital projects

Edison Internationaledison.com

A leading electric power generator and distributor, investing in renewable energy, infrastructure, and energy assets through its subsidiaries Based in California

Freedom Foreverfreedomforever.com

Residential solar installation partner with sales companies. Offers 25-year production guarantee, operates in 36 states. Rapid growth, diverse professionals, competitive benefits.

GE Digitalge.com

Software solutions for electrification and decarbonization across energy ecosystems, transforming data into insights for secure grids, emissions reduction, and sustainable energy transitions.

SOLV Energysolvenergy.com

Provider of solar services for utility, high-voltage substation, and energy storage markets in North America Focus on cleaner power and renewable energy initiatives

EDF Renewables North Americaedf-re.com

Development and operation of wind, solar, and storage projects with onsite energy solutions for commercial and industrial customers.

California Resources Corporationcrc.com

An independent energy and carbon management company in California focused on energy transition through low carbon intensity production and decarbonization projects

ChargePointchargepoint.com

This company specializes in providing a user-friendly electric vehicle charging network, focusing on creating the best EV charging experience since 2007

EBMUDebmud.com

A California public utility providing high-quality drinking water, renewable energy generation, and wastewater treatment services to protect San Francisco Bay

San Francisco Public Utilities Commissionsfpuc.gov

A global utility company delivers high-quality water, wastewater treatment, and power services using state-of-the-art technologies to protect and sustain resources

Industrial Electric Mfg. (IEM)iemfg.com

Design and manufacture custom electrical distribution equipment and integrated power systems tailored to evolving industrial power needs in North America.

Sierra Pacific Industriesspi-ind.com

Manages timberland, produces lumber, millwork, landscaping material, and generates renewable power. Crafts windows and doors from own forests.

Qcells North Americaqcells.com

Global provider of complete energy solutions in solar cell and module, energy storage, project business, and energy retail, serving utility, commercial, governmental, and residential markets worldwide

Teichertteichert.com

A company founded in 1887 that provides construction services, infrastructure building, and construction materials while prioritizing environmental sustainability and community partnerships

City of Palo Altopaloalto.gov

This company is located in Palo Alto, the heart of technology and innovation, offering various city services and amenities to its residents

Nextracker Inc.nextracker.com

A mission-driven organization developing cutting-edge solar tracking technologies to increase energy production and lower costs for renewable power plants

d.lightdlight.com

Global leader providing affordable solar-powered solutions for developing world, transforming energy access for households and small businesses, impacting 100 million lives by 2020

Powur, PBCpowur.com

Empowering homeowners and advisors to thrive in the global shift to sustainable energy, accelerating the adoption of clean energy worldwide

United Pacificrocketstores.com

A leading independent owner and operator of gas stations and convenience stores in the Western US, offering fuel products and convenience items

California ISOcaiso.com

The company manages California's power grid to ensure reliable electricity delivery, open access to wholesale power market, and equal resource competition

Clean Energycleanenergyfuels.com

A leading provider of renewable natural gas for transportation, offering a network of fueling stations across North America to lower carbon emissions

Sempra Infrastructuresemprainfrastructure.com

The company delivers energy in North America, committed to building future energy systems for a better world

Delta Electronics Americasdelta-americas.com

A global leader in switching power supplies and smart energy-saving solutions for various industries, focusing on innovation and sustainability for a better tomorrow

Nikkiso Clean Energy & Industrial Gasesnikkisoceig.com

A global leader in cryogenic technology, specializing in designing and manufacturing innovative products for clean energy and industrial gases applications worldwide

Clearway Energy Groupclearwayenergygroup.com

Leading the transition to clean energy through ownership and operation of renewable and conventional energy assets, offsetting millions of metric tons of carbon emissions

Nextpowernextpower.com

Integrated energy technology platform providing structural, electrical, and digital solutions to streamline project execution and increase yield for global utility-scale solar plants.

Pattern Energypatternenergy.com

Development and operation of wind, solar, transmission, and energy storage projects with nearly 6,000 MW capacity in North America.

GRID Alternativesgridalternatives.org

A non-profit organization promoting accessibility to renewable energy technology and job training in underserved communities for a successful energy transition

Imperial Irrigation Districtiid.com

Providing reliable electricity and water services to meet essential customer needs through careful planning, teamwork, and consistent operations.

ARB, Inc.prim.com

A multinational construction company with expertise in pipeline construction, engineering, industrial, underground, structural, and power generation projects across the United States

QuantumScapequantumscape.com

Innovating solid-state lithium-metal batteries for higher energy density, faster charging, and enhanced safety to facilitate the shift to a lower-carbon future

Pearce Renewablespearce-renewables.com

A top provider of operations, maintenance, and engineering services for mission-critical renewable energy infrastructure, specializing in wind, solar, EV, and ESS

City of Rancho Cucamongacityofrc.us

Premier city in Southern California Inland Empire, offering a safe and desirable place to live, work, and play with award-winning architecture and community amenities

Greentech Renewablesgreentechrenewables.com

A leading solar equipment distributor offering a wide range of solar and electrical products, with a focus on providing excellent service and support

Qcells EPCus.qcells.com

Utility-scale modules, project development, and EPC solutions for solar photovoltaic and energy storage systems throughout the United States as a Hanwha affiliate.

Trojan Battery Companytrojanbattery.com

Leading manufacturer of deep-cycle batteries for golf, renewable energy, transportation, marine, and industrial applications with global operations.

iTECHitecheng.com

Designs, engineers, and manufactures batteries, chargers, and docking stations for medical, handheld electronics, security, and mobile communication markets, focusing on intrinsically safe and smart power.

Ohmiumohmium.com

Ohmium accelerates green hydrogen adoption for decarbonization by designing, manufacturing, and deploying modular, efficient PEM electrolyzer systems for various applications worldwide

Radiantradiantnuclear.com

This clean energy startup is developing a portable nuclear microreactor to provide zero-emissions power in remote areas and backup power for critical uses

Mainspring Energymainspringenergy.com

Innovative company developing linear generators for onsite power generation to support the transition to a net-zero carbon grid Visit their website for more

Motive Companiesmotivecompanies.com

Leading provider of renewable energy and infrastructure solutions for industrial/commercial applications, offering comprehensive services including energy storage, solar, batteries, EV charging, and telecommunications

Calpine Energy Solutions, LLCcalpinesolutions.com

US retail energy business helping commercial and industrial businesses manage energy costs in deregulated markets with integrated products and services

EVgoevgo.com

A leading provider of charging solutions for electric vehicles, including a network of over 950 fast charging locations across the US

SPANspan.io

Facilitating widespread adoption of electric power solutions for everyone through innovative technologies and services ⚡

SMA Americasma-america.com

Global developer of photovoltaic system technology and energy management solutions including solar inverters, battery integration, and grid services for residential and utility markets.

BTC POWERbtcpower.com

Leader in North American electric vehicle charging market, offering innovative DC and AC charging stations for various applications with rapid product innovation and cost-effective solutions

3Degrees Group, Inc.3degreesinc.com

This company helps businesses achieve renewable energy and decarbonization goals by providing sustainability consulting and environmental market solutions worldwide

Tigo Energytigoenergy.com

Global provider of module level power electronics designing smart technologies, optimizers, inverters, and storage software to maximize production and safety for solar arrays.

KS INDUSTRIES, LPksilp.com

An oil & energy company based in Bakersfield, California, specializing in various aspects of the industry, such as production and distribution

Infinity Energy INCinfinityenergy.com

A company connecting people to clean energy and customized home solutions, promoting sustainable relationships and providing solar energy and home security services in California

Voltusvoltus.co

A platform maximizing value from distributed energy resources for commercial and industrial customers, providing cash generation and community benefits

Flyers Energy | A World Kinect Companyflyersenergy.com

Leading marketer of petroleum and renewable fuel for commercial customers in 20 States Vertically-integrated provider with own transport fleet, lubricants distribution, and wholesale fuel operations

BayWa r.e. Americasus.baywa-re.com

A global renewable energy company with 25 years of experience delivering innovative projects and solutions to benefit clients and the environment #rethinkenergy

Suntuity (EnergyAid)energyaid.net

Discover cleaner, more affordable energy solutions Empowering individuals with knowledge and tools to make a positive impact on the world

PowerFlexpowerflex.com

A clean technology solutions company enabling transition to carbon-free energy through solar, storage, EV charging, and energy management platform

AMPamp.tech

A global energy management solutions provider specializing in e-mobility evolution, offering advanced battery management technology and fast-charging systems to accelerate development

Energy Recovery, Inc.energyrecovery.com

Global leader in energy efficiency technology, specializing in pressure exchanger solutions for various industries to increase efficiency and cost savings

Renew Homerenewhome.com

The company partners across the energy industry to help customers save energy and money at home, revolutionizing the way we power the world

Energy Vaultenergyvault.com

Energy Vault develops utility-scale energy storage solutions using gravity-based, battery, and green hydrogen technologies to reduce energy costs and accelerate clean energy transition

Ampureampure.com

A global technology partner specializing in electric vehicle chargers, sunroofs, and heating/cooling systems, dedicated to advancing electromobility with innovative solutions

Webasto Charging Systems, Inc.webasto-group.com

Global supplier of innovative eMobility solutions for the automotive industry, offering advanced battery systems, powerful charging solutions, and comprehensive energy management services

1st Light Energy Inc1stle.com

The company provides alternative energy solutions through solar systems for residential and commercial customers, focusing on reducing energy consumption and carbon footprint

Xos Trucksxostrucks.com

Building state-of-the-art electric commercial vehicles including step vans, box trucks, and vocational vehicles, for greater fleet efficiency and lower operating costs.

Royale Energy, Inc.royl.com

An independent exploration and production company founded in 1986, focused on acquiring, developing, and marketing oil and natural gas in various basins

IEC Corporationiec-corporation.com

A multi-discipline engineering firm dedicated to shaping the future of energy through clean and reliable renewable energy solutions nationwide

Powerpower.solar

A company providing customizable solar power solutions to help homeowners transition away from fossil fuels and save on energy costs

Mainstream Energymainstreamenergy.com

Global leader in solar solutions, offering design, installation, wholesale distribution of solar products, and manufacturing of panel racking systems for clean energy solutions

Beam Globalbeamforall.com

Clean technology innovator specializing in sustainable infrastructure products, EV charging solutions, energy storage, and energy security to power transportation and protect the environment

FASTECH - Fueling and Service Technologies, Inc.fastechus.com

An energy solutions company specializing in designing, constructing, and maintaining renewable fueling infrastructure, as well as commercial HVAC businesses Passionate about innovation

EV Connectevconnect.com

EV Connect enables electricity as a transportation fuel by simplifying the setup, management, and optimization of charging stations for large corporations and municipalities

Arka Energyarkaenergy.com

The company designs and builds innovative clean energy solutions, focusing on sustainable smart roofs for millions of homes worldwide

John M.Phillips, LLCjohnmphillips.com

An energy services company in the US offering specialized equipment and services for the oil, gas, and geothermal industries, including pressure control and pipe recovery

CalCom Energylinktr.ee

The company specializes in providing tailored energy solutions to support a resilient food supply system for the future

EverChargeevercharge.com

An electric vehicle charging hardware and software provider focusing on intelligent power management for commercial fleets, residences, and workplaces

Nikkiso America, Inc.nikkisoamerica.com

The company provides innovative technologies and products globally, focusing on aerospace, industrial, medical, and precision equipment divisions to meet customer demands

GO TO-Ugoto-u.com

A platform for managing and operating electric vehicle charging, committed to providing a seamless and easy charging experience for users

Agilitechagilitechgroup.com

A company providing tailored engineering solutions and industrial services to various industries worldwide, focusing on safety, quality, integrity, and value

American Power Solutions, INCamericanpowersolutions.com

A leader in energy efficiency solutions since 2000, specializing in helping clients utilize public funding and utility rebates for cost-free upgrades

ReGreenregreencorp.com

A company specializing in clean energy solutions for lighting, solar, and intelligent building controls, focusing on energy savings, design, and ROI

Tiger Electrictigerelectric.com

Specializing in commercial electric vehicle charging solutions, providing installation, maintenance, repair, and troubleshooting services with a team of certified technicians

NRG Clean Powernrgcleanpower.com

This company is dedicated to revolutionizing electricity production, consumption, and storage through decentralized, affordable, and renewable solar and storage technologies

IOWNiownrenewable.com

A company dedicated to developing and managing renewable energy projects, aiming to transition from fossil fuels to clean energy for a sustainable future

Alternative Energy Systems, Incsavingenergyforlife.com

Provider of sustainable energy services in the North Valley, specializing in solar systems, EV charging stations, battery storage, and quality customer service

Moxion Powermoxionpower.com

Provider of sustainable and renewable energy solutions focused on delivering clean power to reduce environmental impact and promote green energy.