PG&E Corporation, through its subsidiary, Pacific Gas and Electric Company, engages in the sale and delivery of electricity and natural gas to customers in northern and central California, the United States. It generates electricity using nuclear, hydroelectric, fossil fuel-fired, fuel cell, and photovoltaic sources. The company owns and operates interconnected transmission lines; electric transmission substations, distribution lines, transmission switching substations, and distribution substations; and natural gas transmission, storage, and distribution system consisting of distribution pipelines, backbone and local transmission pipelines, and various storage facilities. It serves residential, commercial, industrial, and agricultural customers, as well as natural gas-fired electric generation facilities. PG&E Corporation was incorporated in 1905 and is based in Oakland, California.

Generac Holdings Inc. designs, manufactures, and distributes various energy technology products and solution worldwide. The company offers residential automatic standby generators, automatic transfer switch, air-cooled engine residential standby generators, and liquid-cooled engine generators; Mobile Link, a remote monitoring system for home standby generators; residential storage solution, which consists of a system of batteries, an inverter, photovoltaic optimizers, power electronic controls, and other components; smart home solutions, such as smart thermostats and a suite of home monitoring products. It also provides smart home energy management devices and sensors for heating and cooling system; smart doorbell cameras; and portable and inverter generators; multiple portable battery solutions; manual transfer switches; outdoor power equipment, including trimmers, field and brush mowers, log splitters, stump grinders, chipper shredders, lawn and leaf vacuums, and pressure washers and water pumps; and battery-powered turf care products. In addition, the company offers commercial and industrial products comprising cleaner-burning natural gas fueled generators; light-commercial standby generators and related transfer switches; stationary generators; single-engine industrial generators; industrial standby generators; industrial transfer switches; light towers, mobile generators, commercial mobile pumps, heaters, dust-suppression equipment, and mobile energy storage systems; stationary energy storage system and related inverter products; and aftermarket service parts and product accessories. The company distributes its products through independent residential dealers, industrial distributors and dealers, national and regional retailers, e-commerce partners, electrical/HVAC/solar wholesalers, solar installers, catalogs, equipment rental companies, and other equipment distributors; and directly to end users. The company was founded in 1959 and is headquartered in Waukesha, Wisconsin.

Bloom Energy Corporation designs, manufactures, sells, and installs solid-oxide fuel cell systems for on-site power generation in the United States and internationally. The company offers Bloom Energy Server, a solid oxide technology that converts fuel, such as natural gas, biogas, hydrogen, or a blend of these fuels into electricity through an electrochemical process without combustion. It sells its products through direct and indirect sales channels to utilities, data centers, agriculture, retail, hospitals, higher education, biotech, and manufacturing industries. The company was formerly known as Ion America Corp. and changed its name to Bloom Energy Corporation in 2006. Bloom Energy Corporation was incorporated in 2001 and is headquartered in San Jose, California.

Power Integrations, Inc. designs, develops, manufactures, and markets analog and mixed-signal integrated circuits (ICs), and other electronic components and circuitry used in high-voltage power conversion worldwide. The company provides a range of alternating current to direct current power conversion products that address power supply ranging from less than one watt of output to approximately 500 watts of output for mobile-device chargers, consumer appliances, utility meters, LCD monitors, main and standby power supplies for desktop computers and TVs, LED lighting, and various other consumer and industrial applications, as well as power conversion in high-power applications comprising industrial motors, solar and wind-power systems, electric vehicles, and high-voltage DC transmission systems. It also offers high-voltage diodes; InnoSwitch IC for electric vehicles; high-voltage gate-driver products used to operate high-voltage switches, such as insulated-gate bipolar transistors and silicon-carbide MOSFETs under the SCALE and SCALE-2 product-family names; and SCALE-iDriver for use in powertrain and charging applications for electric vehicles. In addition, the company provides motor-driver ICs for use in refrigerator compressors, ceiling fans, and air purifiers, as well as pumps, fans, and blowers used in consumer appliances, such as dishwashers and laundry machines. It serves communications, computer, consumer, and industrial markets. The company sells its products to original equipment manufacturers and merchant power supply manufacturers through direct sales staff, as well as a network of independent sales representatives and distributors. Power Integrations, Inc. was incorporated in 1988 and is headquartered in San Jose, California.

Polaris Inc. designs, engineers, manufactures, and markets powersports vehicles in the United States, Canada, and internationally. It operates through three segments: Off-Road, On-Road, and Marine. The company offers off-road vehicles (ORVs), including all-terrain vehicles and side-by-side vehicles; military and commercial ORVs; snowmobiles; motorcycles; and moto-roadsters, quadricycles, and boats. It also provides ORV accessories comprising winches, bumper/brushguards, plows, racks, wheels and tires, pull-behinds, cab systems, lighting and audio systems, cargo box accessories, tracks, and oil; snowmobile accessories, which include covers, traction products, reverse kits, electric starters, tracks, bags, windshields, oil, and lubricants; and motorcycle accessories, such as saddle bags, handlebars, backrests, exhausts, windshields, seats, oil, and various chrome accessories. In addition, the company offers light duty hauling and passenger vehicles; gear and apparel, such as helmets, goggles, jackets, gloves, boots, bibs, hats, pants, and leathers; and pontoon and deck boats. The company provides its products through dealers and distributors, and online; and retail and e-commerce marketplaces. The company was formerly known as Polaris Industries Inc. Polaris Inc. was founded in 1945 and is headquartered in Medina, Minnesota.

Plug Power Inc. develops hydrogen and fuel cell product solutions in North America, Europe, Asia, and internationally. The company offers GenDrive, a hydrogen-fueled proton exchange membrane (PEM) fuel cell system that provides power to material handling electric vehicles; GenSure, a stationary fuel cell solution that offers modular PEM fuel cell power to support the backup and grid-support power requirements of the telecommunications, transportation, and utility sectors; ProGen, a fuel cell stack and engine technology used in mobility and stationary fuel cell systems, and as engines in electric delivery vans; GenFuel, a liquid hydrogen fueling delivery, generation, storage, and dispensing system; GenCare, an ongoing Internet of Things-based maintenance and on-site service program for GenDrive fuel cell systems, GenSure fuel cell systems, GenFuel hydrogen storage and dispensing products, and ProGen fuel cell engines; and GenKey, an integrated turn-key solution for transitioning to fuel cell power. It also provides electrolyzers, a hydrogen generator for clean hydrogen production; liquefaction systems that provides liquid hydrogen to customers; cryogenic equipment for the distribution of liquified hydrogen, oxygen, argon, nitrogen and other cryogenic gases, including trailers and mobile storage equipment; and liquid hydrogen, an alternative fuel to fossil-based energy. The company sells its products through a direct product sales force, original equipment manufacturers, and dealer networks. Plug Power Inc. was incorporated in 1997 and is headquartered in Latham, New York.

Pioneer Power Solutions, Inc., together with its subsidiaries, design, manufacture, integrate, refurbish, distribute, sell, and service electric power systems, distributed energy resources, power generation equipment, and mobile EV charging solutions. The company operates through Electrical Infrastructure Equipment and Critical Power Solutions segments. The Electrical Infrastructure Equipment segment provides electric power systems that help customers effectively and efficiently protect, control, transfer, monitor, and manage their electric energy requirements. It also offers e-Bloc power systems, power systems, and circuit protective equipment related products. The Critical Power Solutions segment provides power generation equipment maintenance, repairs, remote monitoring, and equipment services, and EV charging solutions. This segment offers suite generator on a truck and power generation equipment, and repair, maintenance, and support services. Pioneer Power Solutions, Inc. serves utility, industrial, and commercial markets. Pioneer Power Solutions, Inc. was formerly known as Pioneer Transformers Ltd. and changed its name to Pioneer Power Solutions, Inc. in December 2009. The company was founded in 2008 and is headquartered in Fort Lee, New Jersey. Pioneer Power Solutions, Inc. operates as a subsidiary of Provident Pioneer Partners, L.P.

iPower Inc. operates as an online retailer and supplier of consumer home, pet, garden, outdoor, and consumer electronics products for commercial and home cultivators growing specialty crops, and home goods customers in the United States. It offers grow light systems; advanced heating, ventilation, and air conditioning systems; water pumps, heaters, chillers, and filters; nutrient and fertilizer delivery systems; and various growing media products made from soil, rock wool or coconut fiber, and others. The company also provides general gardening products, including environmental sensors, controls, and nutrients; and home products, which comprise commercial fans, floor and wall fans, storage and shelving units, and chairs. It sells its products under the iPower, Simple Deluxe, and other brand names through zenhydro.com, simpledeluxe.com, and various third-party online platforms. The company was formerly known as BZRTH Inc. and changed its name to iPower Inc. in September 2020. iPower Inc. was incorporated in 2018 and is based in Rancho Cucamonga, California.