The U.S. Department of Energy is a government agency established in 1977, located in Washington, D.C. Its primary mission is to ensure the security and prosperity of the nation by tackling energy, environmental, and nuclear challenges. The Department focuses on promoting transformative scientific and technological solutions to address these issues, thereby supporting the country's energy needs and environmental sustainability.

Post Oak Energy Capital, established in 2006 and headquartered in Houston, Texas, is a private equity firm focused on the energy sector. It invests in mid-market companies across North America, with a primary focus on the United States. The firm specializes in direct equity and equity-related debt investments, targeting companies in oil and gas production, exploration and production, oilfield services, and related infrastructure assets. Post Oak Energy Capital typically invests between $25 million and $75 million per transaction, seeking both control and minority positions. It aims to allocate approximately 75% of its capital to traditional North American onshore oil and gas investments, with the remaining 25% dedicated to services related to oil and gas production.

Enhanced Capital, established in 1999, is a New York-based investment firm managing over $400 million. It specializes in providing flexible equity and debt financing to small and mid-sized businesses, promoting their growth and expansion. The firm's investment approach is practical and tailored, aiming to maximize the growth potential of companies poised for rapid growth. Enhanced Capital also invests in renewable energy, historic real estate rehabilitation, and affordable housing projects, often leveraging federal and state incentive programs.

Schlumberger Limited is a leading global oilfield services corporation, established in 1926 and headquartered in the United States. The company operates in approximately 80 countries, employing around 80,000 individuals from 140 nationalities. Schlumberger offers a comprehensive range of products and services designed for the oil and gas industry, including seismic acquisition and processing, formation evaluation, well testing, directional drilling, cementing, stimulation, and artificial lift. Additionally, the company provides consulting services and software solutions. Schlumberger also extends its expertise to the groundwater sector, catering to similar needs within that industry.

Helmerich & Payne is a global contract drilling company headquartered in Tulsa, Oklahoma. Established over 95 years ago, it specializes in drilling oil and gas wells for exploration and production companies worldwide. The company is renowned for its innovation, notably the FlexRig technology, and operates across North America, the Gulf of Mexico, South America, the Middle East, and Africa.

BP Energy Partners, LLC is a private equity firm based in Dallas, Texas, founded in 2013. The firm specializes in middle market investments across the energy sector, with a particular emphasis on the natural gas value chain, renewable energy, and lower carbon solutions. It focuses on sectors such as power, oil field services, midstream logistics, and other industries that can benefit from the transition to cleaner and more economical energy sources. BP Energy Partners seeks investment opportunities that leverage the price dislocation between natural gas and traditional energy sources, primarily targeting low-risk producing resources in North American basins. The firm makes control investments, typically taking majority stakes in its portfolio companies, and manages capital on behalf of various institutional investors, including corporate and public pensions, insurance companies, and family offices.

The Riverside Company is a global private equity firm founded in 1988 and headquartered in New York. It makes both control and non-control investments in growth-oriented businesses valued up to US$400 million. The firm seeks to partner with sellers who remain involved and work with Riverside to drive growth. Its portfolio spans multiple sectors, including business services, consumer brands, education and training, franchisors, healthcare, software and information technology, and specialty manufacturing. Riverside operates worldwide, with investments in the United States, Canada, Europe and select markets in Asia and Oceania, such as Japan, South Korea, Australia and New Zealand. Since inception, Riverside has completed more than 480 transactions and built an international portfolio of more than 80 companies.

Quantum Energy Partners, LLC, established in 1998 and headquartered in Houston, Texas, is a private equity firm specializing in energy investments. It focuses on the oil and gas upstream, midstream, oilfield services, and power generation sectors, with a commitment to sustainability and the transition to clean energy. The firm invests through common equity, preferred equity, and sub-debt with warrants, typically taking majority stakes in companies with sales values between $200 million and $2 billion and enterprise values between $100 million and $400 million. Quantum Energy Partners aims to invest between $10 million and $2 billion per company, with an investment horizon of three to seven years. It operates across North America, with additional offices in Lubbock and Albany, Texas.

SCF Partners, established in 1989, is a global, Texas-based private equity firm with offices in the United Kingdom, Canada, and Singapore. The company specializes in investing in and supporting top energy service, equipment, and technology firms, with a focus on traditional energy improvements, transitional energy sources, and transformational energy technologies.

EnCap Flatrock Midstream, established in 2008, is a private equity firm headquartered in San Antonio, Texas, with additional offices in Edmond, Oklahoma, and Houston, Texas. The firm specializes in investing in the midstream energy infrastructure sector across North America, focusing on natural gas and crude oil gathering, processing, storage, and transportation, as well as related services. EnCap Flatrock Midstream typically invests between $100 million to $200 million in its portfolio companies, seeking controlling stakes and board representation. The firm aims to enhance the value of its investments through strategic decision-making and exits within three to seven years.

Arcadius Capital Partners, established in 2014, is a Calgary-based private equity firm with an additional office in Houston. The company specializes in mid-market investments, focusing on the upstream oil and gas sector in the United States and Canada.

Patterson-UTI Energy, Inc. is a Houston-based company that provides onshore contract drilling services to oil and natural gas operators across the United States and Canada. The company operates through three primary segments: Contract Drilling Services, Pressure Pumping Services, and Directional Drilling Services. Its Contract Drilling segment focuses on regions such as west Texas, southeastern New Mexico, and parts of the Appalachian region, utilizing a fleet of 216 marketable land-based drilling rigs. The Pressure Pumping segment delivers well stimulation, cementing, and hydraulic fracturing services, while the Directional Drilling Services segment offers advanced tools and technologies to enhance drilling accuracy and efficiency. Additionally, Patterson-UTI Energy provides equipment services to drilling contractors and invests in oil and natural gas assets, primarily in Texas and New Mexico. Founded in 1978, the company is recognized for operating one of the largest and most technologically advanced drilling fleets in North America.

The Goldman Sachs Group, Inc., established in 1869, is a global leader in investment banking, securities, and investment management. It operates in four primary segments: Investment Banking, Institutional Client Services, Investing & Lending, and Investment Management. The company provides a wide range of services, including financial advisory services for mergers and acquisitions, underwriting services for various securities, client execution services for fixed income, currencies, commodities, and equities, securities services, and wealth advisory services. It serves a diverse client base comprising corporations, financial institutions, governments, and high-net-worth individuals. Additionally, Goldman Sachs invests in a broad array of asset classes, including debt securities, equity securities, real estate, and private equity, demonstrating its commitment to driving growth and innovation across industries.

National Oilwell Varco, Inc. is a prominent provider of systems, components, and products for the global oil and gas industry, operating across three main segments: Wellbore Technologies, Completion & Production Solutions, and Rig Technologies. The company designs and manufactures a wide range of equipment essential for drilling operations, including drilling fluids, solids control and waste management solutions, and various downhole tools. National Oilwell Varco also offers technologies for hydraulic fracture stimulation, well intervention, and both onshore and offshore production. Its extensive product line includes cranes, blowout preventers, and equipment for offshore wind construction, along with services such as remote equipment monitoring and customer training. Founded in 1862 and headquartered in Houston, Texas, National Oilwell Varco focuses on innovation and customer service, continuously developing new technologies and solutions to meet the evolving needs of the oil and gas sector.

ONEOK is a diversified energy company engaged in natural gas liquids, natural gas pipelines, and natural gas gathering and processing. It operates primarily in the Mid-Continent, Permian, and Rocky Mountain regions of the United States. ONEOK provides safe and reliable energy services to its diverse customer base, including integrated and independent exploration and production companies, NGL and natural gas gathering and processing companies, crude oil and natural gas production companies, propane distributors, ethanol producers, petrochemical, refining, and NGL marketing companies, natural gas distribution companies, electric-generation facilities, industrial companies, municipalities, producers, processors, and marketing companies.

Pelican Energy Partners, established in 2011 and based in Houston, Texas, is a private equity firm specializing in strategic investments in small to mid-market energy service and equipment businesses. The firm focuses on companies within the energy, manufacturing, and related sectors, primarily in the United States and Canada. Pelican Energy Partners aims to invest in businesses with high growth potential, supporting their development through strategic guidance and operational expertise.

Saudi Aramco is the national oil company of Saudi Arabia and the world's largest producer of oil and gas, with exclusive rights to explore, produce, and refine hydrocarbons. It maintains a global footprint across refining, chemicals, and downstream operations, supported by extensive procurement, engineering, research, IT, finance, legal, HR, and public relations services. The company operates through a broad network of affiliates and international offices to supply energy to markets worldwide and optimize production, efficiency, and value across upstream and downstream activities. Its operations span Europe, Asia, the Middle East, Africa, and the Americas, with substantial refining capacity and a large chemical manufacturing portfolio. Aramco engages in venture investing through its corporate arms to back technologies in areas such as sustainability, digitalization, and energy efficiency that complement its core energy business. The company emphasizes reliability and scale, balancing traditional hydrocarbon leadership with efforts in technology, efficiency, and global energy development.

Tailwater Capital, established in 2013, is a Dallas-based private equity firm specializing in middle-market investments within the energy sector, focusing on midstream and upstream oil and gas companies.

ProFrac Holding Corp. is a growth-oriented energy services company that specializes in hydraulic fracturing and completion services for upstream oil and gas companies involved in the exploration and production of unconventional oil and natural gas resources in North America. The company operates primarily in regions such as West Texas, East Texas/Louisiana, South Texas, Oklahoma, Uinta, and Appalachia. ProFrac is structured into three segments: stimulation services, manufacturing, and proppant production. Its stimulation services segment, which is the largest revenue generator, operates a fleet of mobile hydraulic fracturing units and auxiliary equipment, providing essential support for oil and gas extraction operations.

TriWest Capital Partners, established in 1998, is a Calgary-based private equity firm that invests in mid-market companies across Canada. Focusing on the service, manufacturing, and distribution sectors, TriWest targets businesses with annual revenues between $10 million and $200 million and EBITDA ranging from $10 million to $100 million. The firm typically seeks majority stakes and holds investments for four to seven years. In addition to capital, TriWest offers operational and transactional expertise to create shareholder value. Since its inception, the firm has raised over $775 million in committed capital.

Founded in 1983, First Reserve is a global private equity firm focused exclusively on energy investments. With over $32 billion raised and four decades of industry expertise, the firm invests in energy companies and assets worldwide, targeting sectors such as exploration, production, refining, services, and equipment manufacturing.

Founded in 2015, Black Bay Energy Capital is a private equity firm headquartered in New Orleans, Louisiana. The firm specializes in mid-market investments, focusing on the energy, oil and gas, and oilfield service sectors within North America. It typically invests up to $30 million, preferring majority stakes.

RelaDyne is a supplier and distributor of lubricants, fuels, and related services for the automotive, commercial, and industrial markets. With over 350 years of combined expertise, the company serves more than 10,000 clients, emphasizing a commitment to delivering dependable service and tailored solutions. Its product offerings include lubricants, fuels, and diesel exhaust fluid (DEF), alongside reliability services that focus on preventive maintenance. By helping businesses achieve a lower total cost of ownership and promoting decarbonization, RelaDyne enhances the sustainability and reliability of equipment and assets, positioning itself as a trusted advisor to its customers.

Founded in 2010 through a merger of five companies, Forum Energy Technologies serves the oil, natural gas, industrial, and renewable energy industries. It designs, manufactures, and distributes products, offering aftermarket parts supply and services. Its product portfolio includes engineered capital equipment and consumables used in drilling, well construction, production, and transportation.

HitecVision AS, established in 1985, is a Norwegian private equity firm specializing in investments within the energy sector, primarily focusing on oil and gas-related services and technologies. The company invests in middle market companies across various stages, from seed to mature, and participates in buyouts, industry consolidations, and public-to-private transactions. HitecVision typically invests between $30 million and $150 million for controlling stakes in companies with an enterprise value of up to $300 million. With headquarters in Stavanger and additional offices in Oslo, London, Aberdeen, and Houston, the firm has a global presence, investing in companies based in Asia, Africa, the Middle East, Northern Europe, and North America, with a particular focus on Norway, the United Kingdom, and the United States. HitecVision's extensive industry background enables it to create value by partnering with entrepreneurial managers to build substantial and sustainable companies. Since 1994, the firm has acquired, invested in, or established over 150 companies and exited over 100.

Brigade Energy Services is an energy services company based in Denver, Colorado. It specializes in providing innovative well service solutions, high-quality equipment, and experienced personnel. The company uses a proprietary competency management system, along with data measurement and machine-learning initiatives, to enhance well-site performance, safety, and efficiency. Brigade Energy Services aims to meet the specific needs of the well-servicing industry through its advanced energy applications and commitment to excellence.

Pearl Energy Investments is a Dallas, Texas-based private equity firm that focuses on buyouts and small to mid-market investments in the North American energy sector, including upstream, midstream, and oilfield services. Founded in 2015, the firm targets energy companies with typical investment sizes ranging from about $20 million to $150 million per deal, aiming to support growth in upstream operations, midstream infrastructure, and oilfield services.

Apollo Global Capital is a holding company that operates primarily in the mining sector, engaging in the extraction of magnetite iron ore and competing in the global iron ore market. The company also manages various business activities, including the sale of database research engine-related products and the execution of pre- and post-production tasks for websites. These products are marketed through finished product advertisements. In addition to its focus on mining, Apollo Global Capital is involved in alternative investment management, with interests spanning private equity, credit-oriented capital markets, and real estate investments.

ArcLight Capital Partners is a private equity firm established in 2001, specializing in energy infrastructure investments. Co-founded by Daniel R. Revers and Robb E. Turner, the firm has developed a strong reputation for its broad and profitable investment strategies across the energy sector while effectively managing downside risks. ArcLight's investment performance is attributed to its conservative investment philosophy, extensive asset-level expertise, and significant market experience. The firm has a proven track record of generating superior returns throughout the energy industry value chain and currently manages over $10 billion across five funds.

Founded in 1998, Lime Rock Partners is a private equity firm based in Houston, Texas. The firm specializes in investing in growth capital of global energy companies operating in the exploration and production, and oilfield service sectors.

Founded in 2008, White Deer Energy is a Houston-based private equity firm focused on the mid-market oil and gas industry. With offices in Houston and New York, the firm invests in exploration & production, oilfield services, equipment manufacturing, and midstream sectors. They typically commit $50 to $150 million per investment, aiming to create value for both investors and industry partners.

Riley Permian specializes in high-growth energy exploration in the Permian Basin, focusing on horizontal development of the San Andres Formation.

CSL Capital Management, established in 2008, is a Houston, Texas-based private equity firm. It specializes in investing in small to mid-sized energy businesses across the United States, focusing on service and equipment companies within the upstream, midstream, and downstream sectors of the energy industry. The firm aims to build and acquire controlling interests in these companies.

Founded in 2002, EV Private Equity is an impact investment company headquartered in Stavanger, Norway, with additional offices in Aberdeen and Houston. The firm specializes in investing in sustainable, medium-sized technology businesses primarily in Europe and North America, focusing on sectors such as energy equipment, exploration, production, refining, and energy services. With a track record of over 4,000 deals, EV Private Equity has made thirty-seven investments and successfully exited eighteen companies. The company is staffed by professionals with extensive experience in the industry, investment, and transactions, supported by a broad network within the oil and gas sector. Through its commitment to sustainability and innovation, EV Private Equity aims to drive growth and create long-term value for its portfolio companies.

Enservco Corporation is a provider of well-site services to the domestic onshore oil and gas industry, operating through its subsidiaries Heat Waves Hot Oil Service and Dillco Fluid Services. The company specializes in a range of services including hot oiling, frac heating, acidizing, pressure testing, and fluid management, catering to both large and small energy companies across diverse regions in the United States, including Colorado, Utah, Wyoming, Kansas, Texas, Oklahoma, and New Mexico. Enservco is also expanding its operations to the Northeastern U.S., particularly targeting the Marcellus shale in the Appalachian Basin, and is establishing a facility in North Dakota to serve the Bakken Formation. With a fleet of over 200 specialized trucks and related equipment, Enservco also offers frac tank rental and oilfield construction services, focusing on providing reliable, round-the-clock service to its clients.

SPL is a company that offers outsourced hydrocarbon measurement, analysis, and reporting services specifically tailored for oil and gas production and transportation companies. It specializes in various areas including production accounting, auditing, inspection, automation, and laboratory design and construction services. By providing these essential services, SPL enables its clients to effectively market their products downstream, comply with regulatory reporting requirements, and ensure precise payment of royalties to leaseholders. Through its expertise, SPL supports the operational efficiency and financial accuracy of its clients within the oil and gas sector.

NGP Energy Capital Management is a private equity and venture capital firm focusing on energy investments. Founded in 1988 and headquartered in Irving, Texas, with offices in Houston, London, Santa Fe, and Stamford, it manages a family of energy-focused funds. The firm invests across the energy value chain, including oil and gas exploration and production, midstream, oilfield services, energy efficiency, alternative energy, natural gas gathering and processing, and power technology, as well as related areas such as water resources, food and agriculture, and coastal protection. It targets a range of capital events from seed and startup funding to growth equity, middle-market and later-stage buyouts, and may co-invest in direct oil and gas property interests alongside portfolio companies. Typical investments span from a few million to several hundred million dollars, with a North American focus and selective international opportunities. The firm aims to partner with management teams to support growth and help navigate the challenges of the energy industry.

TechnipFMC is a technology provider serving traditional and new energy industries. The company delivers fully integrated projects, products, and services across the energy value chain, including subsea, offshore, and onshore sectors. It engages in project management, engineering, and construction for the energy industry, from deep subsea oil and gas developments to large-scale offshore and onshore infrastructures. With about 38,000 employees and operations in numerous countries, TechnipFMC maintains industrial assets and a fleet of vessels for pipeline installation and subsea construction. The company supports clients in lowering carbon intensity and advancing energy transition initiatives, applying innovative technologies to improve project economics and develop energy resources. It originated from the 2017 merger of Technip and FMC Technologies, and serves multiple segments of oil and gas and other energy markets worldwide.

Baker Hughes is an international energy technology company operating in four segments: Oilfield Services, Oilfield Equipment, Turbomachinery & Process Solutions, and Digital Solutions. It offers a wide range of products and services for the oil and gas industry, including drilling, evaluation, completion, production services, equipment, software, and industrial chemicals.

Precision Drilling is Canada's largest oilfield services company, offering contract drilling, well servicing, and strategic support services to customers worldwide. The company provides on-the-ground expertise, including people, equipment, and knowledge, to deliver value to clients daily.

Oceaneering is a global provider of engineered services and products primarily to the offshore oil and gas industry, with a focus on deepwater applications. It offers remotely operated vehicles, built-to-order specialty subsea hardware, deepwater intervention and manned diving services, non-destructive testing and inspection, and engineering and project management.

Brookfield Infrastructure Partners owns and operates a portfolio of high‑quality, long‑life infrastructure assets that generate stable cash flows and require minimal maintenance capital. The company focuses on utilities, transport, midstream, and data infrastructure with high barriers to entry, ensuring long‑term value appreciation. Its assets span North and South America, Australia, and Europe, including regulated gas transmission systems in Brazil and distribution operations in the United Kingdom. Brookfield Infrastructure Partners seeks acquisition opportunities in sectors that share these characteristics, aiming to deliver reliable returns through a diversified global presence.

Subsea 7 is an energy company specializing in subsea field development services, including installation of umbilicals, risers, and flowlines (SURF), fabrication, maintenance, heavy lifting, and decommissioning. It also offers renewable energy services.

Brookside Energy is a publicly traded company involved in the exploration and appraisal of oil and gas projects, primarily focusing on the Anadarko Basin in western Oklahoma, an area known for its rich oil and gas resources. The company adopts a portfolio approach to acquiring and developing producing oil and gas assets, as well as leasing and developing acreage opportunities. Its operations are segmented into oil and gas exploration and corporate activities, with the majority of its revenue generated from oil and gas exploration. Brookside Energy aims to capitalize on the potential of its projects within this well-explored region.

Enbridge is a leading North American energy transportation and distribution company. It operates the world's longest crude oil and liquids pipeline system, spanning Canada and the United States. Enbridge also owns and operates regulated natural gas utilities in both countries, including Canada's largest distribution company. Additionally, it has interests in renewable and alternative energy generation, with a focus on wind projects.

Suncor Energy Inc. is an integrated energy company based in Calgary, Canada, primarily focused on the development of petroleum resource basins in the Athabasca oil sands, one of the largest oil reserves globally. The company engages in the exploration, production, and marketing of crude oil both in Canada and internationally. Its operations are divided into several segments, including Oil Sands, which involves the recovery and upgrading of bitumen; Exploration and Production, which includes offshore activities in Canada and international assets; and Refining and Marketing, where crude oil is refined into various petroleum products marketed through its Petro-Canada retail network. Additionally, Suncor is committed to advancing the transition to a low-emissions future by investing in renewable energy sources and power generation, while also participating in energy trading activities related to crude oil and natural gas. Founded in 1917, Suncor has established itself as a significant player in the global energy market.

Ziyen Energy is a technology-driven energy company incorporated in Wyoming in 2016. Initially established as a software provider, the company focuses on delivering information related to the oil, gas, power, and energy sectors. Ziyen Energy specializes in business information and contracts by developing advanced procurement and supply chain software, which offers clients insights into industry-specific government and private contracts. This enables clients to maximize oil extraction from existing fields through enhanced recovery techniques and to establish new wells utilizing innovative technology. Additionally, Ziyen Energy holds interests in oil assets located in Texas and the Illinois Basin, which encompasses Illinois, Indiana, and Kentucky.

Transocean is an international provider of offshore contract drilling services for oil and gas wells, specializing in technically demanding sectors such as deepwater and harsh environment drilling. The company operates the world's highest specification floating offshore drilling fleet, which includes drillships, semi-submersibles, and jack-up rigs. These rigs are utilized in various offshore locations for oil and gas exploration and production. By contracting mobile offshore drilling rigs, along with the necessary equipment and work crews, Transocean plays a critical role in the global energy sector.

Petrofac provides services to the oil and gas production and processing industry, with a long track record of delivering engineering and construction, operating and maintaining oil and gas facilities. It offers engineering and construction, asset solutions and integrated energy services, with Asset Solutions representing the majority of revenue from reimbursable engineering and production services for the oil and gas sector. The company conducts substantial activity in the United Kingdom, with operations in Algeria, Lithuania, Malaysia, the United States, Oman and other countries.

Mercury is a purpose-built early-stage venture capital platform dedicated to supporting transformative software startups in communities across America, particularly in Middle America. The company identifies and partners with exceptional founders, offering both guidance to new entrepreneurs and resources to experienced innovators. With a focus on operationally-driven investment strategies, Mercury has generated over $9 billion in value, facilitating rapid and sustainable growth for its portfolio companies. Through its comprehensive growth partner network, Mercury aims to leverage local assets and talent, fostering entrepreneurship and innovation within the regions it serves.