Building Energy Funding, Investors & Competitors

Iberdrola is one of the largest utilities in the world with electric utility operations in nearly 40 countries. The company has a 57-gigawatt portfolio of hydro, wind, natural gas, and nuclear power plants. It is one of the largest owners of wind farms in the world, representing about 40% of its portfolio. Although the company has recently developed or acquired distribution and power generation assets in other geographic areas, Spain is still home to more than half of its power generation capacity. Iberdrola also owns and operates electricity and distribution networks in Spain, the UK, Brazil, and the US.

China Yangtze Power Co Ltd business activities include hydroelectric power generation, power distribution and sales, overseas power station's operation, management, consultation services, investment, and financing. It has also established its power distribution and sales platforms such as Three Gorges Water Conservancy and Peru LuzdelSur. The company owns the power generation assets of four hydropower plants on the mainstream of the Yangtze River, namely Three Gorges, Gezhouba, Xiluodu, and Xiangjiaba.

Constellation Energy Corp producer of carbon-free energy and a supplier of energy products and services. The company offers generating capacity that includes nuclear, wind, solar, natural gas, and hydroelectric assets. It sells electricity, natural gas, and other energy-related products and sustainable solutions to various types of customers, including distribution utilities, municipalities, cooperatives, and commercial, industrial, public sector, and residential customers in markets across multiple geographic regions. Its operating segments and reporting units are Mid-Atlantic, Midwest, New York, ERCOT, and Other Power Regions.

Vistra Corp. is one of the largest power producers and retail energy providers in the US. It owns 44 gigawatts of generation capacity, including natural gas (27 GW), nuclear (6.5 GW), coal (8.7 GW), and solar and battery storage (1.3 GW). The Cogentrix acquisition will add 5.5 GW of gas generation. Vistra's retail electricity business serves 5 million customers in 20 states, including almost a third of all Texas electricity consumers. Vistra emerged from the Energy Future Holdings bankruptcy as a stand-alone entity in 2016.

Huaneng Lancang River Hydropower Inc is engaged in the development and operation of the Lancang River and the surrounding areas of hydropower resources. The company is also engaged in the exploration of solar photovoltaic, wind power, shale gas, and other new energy construction.

Danish company Orsted was named Dong Energy until the sale of all its oil and gas fields to Ineos in 2017, soon after the May 2016 initial public offering. Orsted is now focused on renewable assets, especially offshore wind farms. It operated 9.9 gigawatts of offshore wind farms at the end of 2024. The United Kingdom is the biggest country of operation, ahead of Germany and Denmark. The group intends to develop its footprint outside Europe with projects in Taiwan and in the US. Orsted also operates 4.8 GW of onshore wind and solar assets concentrated in the United States. The company is involved in more traditional utilities business like conventional power plants and gas supply, but these activities are noncore.

Founded in 1947 through a nationalization act, Verbund is the leading power producer in Austria. The Austrian state owns 51% of its capital. Hydro accounts for more than 90% of the total power output. Hydro power is generated from reservoirs and pumped storage plants in the Austrian Alps, and run-of-river plants in Austria and southern Germany. Total hydro capacity amounts to 8.4 GW. Verbund also owns the Austrian electricity grid through its fully owned subsidiary AP. In 2021, the firm acquired 51% of Gas Connect Austria, a gas transmission and distribution system operator. The group also owns one CCGT and is involved in trading and development of wind and solar capacity.

Gulf Development Public Company Limited, trading as GULF and formerly Gulf Energy Development, is a Bangkok-based Thai energy and infrastructure holding company founded on 19 August 2011 by Sarath Ratanavadi, bringing together the power generation businesses of Gulf Electric and Gulf Holdings. It has been listed on the Stock Exchange of Thailand since a 2017 IPO that raised about THB 24 billion. Its energy arm runs gas-fired, solar and wind plants in Thailand and abroad, with domestic and international capacity above 23 GW in 2025, while infrastructure covers ports, LNG terminals and motorways and the digital arm includes cloud computing and the Gulf Binance crypto exchange venture. The company merged with its subsidiary Intouch Holdings with effect from 1 April 2025, took the name Gulf Development, and now directly holds about 40% of Advanced Info Service and 40% of Thaicom. For 2025 it reported core profit of THB 28.8 billion, up 33.4%, and net profit of THB 86.6 billion including a one-off merger gain of THB 56.1 billion. It plans about THB 100 billion of investment over five years, 60-70% of it in clean energy.

Huadian New Energy Group Corp Ltd is engaged in Development, investment and operation of new energy projects, mainly wind power generation and solar power generation.

EDP is a vertically integrated utility company and is the largest generator, supplier, and distributor of electricity in Portugal. In addition to Portugal, EDP has sizable operations in Spain, Brazil, and the US. EDP owns 71% of EDP Renovaveis, the fourth-largest wind power owner/operator in the world. EDP delisted Energias do Brasil in August 2023 after buying out the 46% minorities.

Axia Energia is engaged in the generation, transmission, and commercialization of electricity in Brazil. The company operates a portfolio of wind, thermal, hydro, and nuclear power plants located throughout the country.

Uniper SE is a Germany-based energy generation and energy trading company. The firm operates through three segments: Flexible Generation, Greener commodities, and Green Generation. The Green Generation segment comprises emission-free power generation plants that the Uniper Group operates in Europe. The Flexible Generation segment comprises the power and heat generation plants that the Uniper Group operates in Europe to flexibly meet grid operators' requirements. The Greener Commodities segment bundles the energy trading and optimization activities and forms the commercial interface between the Uniper Group and the globally traded markets for energy and the major customers. The majority of revenue is derived from the Greener Commodities segment.

SDIC Power Holdings Co Ltd is engaged in investment and construction, management of energy projects based on electric power generation, development and operation of renewable energy projects, high technology and eco-friendly industries, development and operation of the products associated with electric power, as well as consultancy. The company mainly operates its businesses in the domestic and overseas markets.

Kansai Electric Power Co Inc is a Japan-based company that provides energy and information technology solutions. The company operates in four business segments. The Energy segment offers electricity, gas, and utility solutions. The Information and Communications segment provides comprehensive communication services. The Lifestyle/Business Solutions segment delivers consumer and business-related services. The Power Transmission and Distribution segment ensures a safe and reliable electricity supply from a neutral and fair standpoint. It generates the majority of its revenue from the Energy business segment.

Helion Energy is an Everett, Washington-headquartered fusion energy company founded in 2013, advancing toward the first fusion power plant for clean electricity production. It has demonstrated prototypes like Trenta and develops the Polaris project for net electricity generation using magneto-inertial fusion. Helion secures a power purchase agreement with Microsoft for delivery of 50 megawatts of fusion power.

Eni Plenitude is a Milan-headquartered energy retailer operating in 10 European countries, generating electricity from 6 GW of renewable capacity including solar farms in Italy and Spain. The company manages 7 million charging points for electric vehicles across highways and urban areas, alongside retail sales of gas and power to residential and business customers.

Cepsa is a Spanish integrated energy company founded in 1929 and renamed Moeve in 2024. Its historical operations include oil refining, fuel marketing, service stations, lubricants, aviation and marine fuels, petrochemicals and selected upstream interests. The group serves industrial customers, transport operators, distributors and motorists, generating revenue from commodity production, refining margins, chemical sales and retail energy products. It operates major industrial complexes in Andalusia and a broad Iberian commercial network. More recent investment has shifted toward renewable fuels, electric mobility, green hydrogen and other lower-carbon energy infrastructure. Mubadala has controlled the group since acquiring the former IPIC interest, while Carlyle held a substantial minority stake during part of the covered period.

Inox Clean Energy is the renewable energy business of India's INOXGFL Group, headquartered at INOXGFL Towers in Noida, Uttar Pradesh. It operates through two platforms: Inox Neo Energies, an independent power producer that develops, acquires and operates wind, solar and hybrid projects supplying commercial and industrial customers, power exchanges and other buyers, and Inox Solar, an integrated manufacturer of solar cells and modules that also offers engineering, procurement, construction and operations services. The company runs about 3 GW of renewable generating capacity and about 6 GW of module manufacturing capacity, roughly half of it in the United States after it bought Boviet Solar's US manufacturing assets, and targets 15 GW of generation and more than 11 GW of manufacturing within two to three years. It earns revenue from selling power and solar modules. In the ten months to mid-2026 it completed ten acquisitions, including Vibrant Energy, SunSource Energy's Indian business, Vena Energy India and SkyPower. The company raised about Rs 3,100 crore from CalPERS, SUN Group Global, Authum Investments and others in January 2026 and Rs 700 crore from the Adar Poonawalla family office in July 2026 at a Rs 70,000 crore valuation, while INOXGFL retains control ahead of a planned IPO.