NGP Energy Capital Management
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.
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Past deals in Southwestern US
Persefoni
Series C in 2025
Persefoni AI Inc., established in 2020 and headquartered in Tempe, Arizona, specializes in developing an artificial intelligence-based platform for carbon footprint accounting and management. The company's core product, Persefoni, is a SaaS-based platform that measures, analyzes, plans, forecasts, and reports organizational and investment portfolio carbon footprints. It provides actionable performance context, enabling businesses to manage carbon transactions and inventory with the same rigor as financial transactions. Persefoni caters to a wide range of clients, including institutional investors, sustainability teams, CFOs, and business unit leaders, offering tools for carbon accounting, planning, forecasting, and sustainability reporting. The platform serves as a single source of carbon truth, facilitating compliance with stakeholder and regulatory climate disclosure requirements.
Persefoni
Series C in 2023
Persefoni AI Inc., established in 2020 and headquartered in Tempe, Arizona, specializes in developing an artificial intelligence-based platform for carbon footprint accounting and management. The company's core product, Persefoni, is a SaaS-based platform that measures, analyzes, plans, forecasts, and reports organizational and investment portfolio carbon footprints. It provides actionable performance context, enabling businesses to manage carbon transactions and inventory with the same rigor as financial transactions. Persefoni caters to a wide range of clients, including institutional investors, sustainability teams, CFOs, and business unit leaders, offering tools for carbon accounting, planning, forecasting, and sustainability reporting. The platform serves as a single source of carbon truth, facilitating compliance with stakeholder and regulatory climate disclosure requirements.
Noveon Magnetics
Series B in 2023
Noveon Magnetics specializes in a proprietary magnet-to-magnet recycling process aimed at producing neodymium magnets from scrap magnet feedstocks. Founded in 2014 and based in Austin, Texas, the company leverages alternative raw materials to minimize waste and enhance sustainability in the production of rare earth permanent magnets. Its innovative system is designed to meet the demands of various applications, particularly in motors, where high magnetic performance at elevated temperatures is essential. By utilizing its advanced technology, Noveon Magnetics enables industries to access high-quality magnetic materials at competitive prices, contributing to a more sustainable and efficient manufacturing landscape.
Persefoni
Series B in 2021
Persefoni AI Inc., established in 2020 and headquartered in Tempe, Arizona, specializes in developing an artificial intelligence-based platform for carbon footprint accounting and management. The company's core product, Persefoni, is a SaaS-based platform that measures, analyzes, plans, forecasts, and reports organizational and investment portfolio carbon footprints. It provides actionable performance context, enabling businesses to manage carbon transactions and inventory with the same rigor as financial transactions. Persefoni caters to a wide range of clients, including institutional investors, sustainability teams, CFOs, and business unit leaders, offering tools for carbon accounting, planning, forecasting, and sustainability reporting. The platform serves as a single source of carbon truth, facilitating compliance with stakeholder and regulatory climate disclosure requirements.
Mesa Minerals Partners IV
Private Equity Round in 2021
Mesa Minerals Partners IV is an acquisition company based in Houston, Texas, established in 2018. It specializes in acquiring oil and gas mineral rights, primarily focusing on royalty and mineral assets located in prominent regions such as the Haynesville and Permian basins. The company operates a diverse portfolio of mineral and royalty holdings across all major basins in the United States, aiming to enhance its assets and value within the energy sector.
Persefoni
Series A in 2021
Persefoni AI Inc., established in 2020 and headquartered in Tempe, Arizona, specializes in developing an artificial intelligence-based platform for carbon footprint accounting and management. The company's core product, Persefoni, is a SaaS-based platform that measures, analyzes, plans, forecasts, and reports organizational and investment portfolio carbon footprints. It provides actionable performance context, enabling businesses to manage carbon transactions and inventory with the same rigor as financial transactions. Persefoni caters to a wide range of clients, including institutional investors, sustainability teams, CFOs, and business unit leaders, offering tools for carbon accounting, planning, forecasting, and sustainability reporting. The platform serves as a single source of carbon truth, facilitating compliance with stakeholder and regulatory climate disclosure requirements.
AVAD Energy Partners
Private Equity Round in 2017
AVAD Energy Partners is a Dallas-based oil and natural gas production company founded in 2016 that concentrates on acquiring and developing conventional United States properties. It pursues both operated and non-operated opportunities to build a diversified, lower-risk asset portfolio. Led by John Davis, Tom Quigley, and Crystal Blackstone, the team brings extensive industry experience from roles at major oil companies and consulting groups, applying it to acquiring and developing conventional oil and gas assets across the continental United States.
EnLink Midstream
Acquisition in 2016
EnLink Midstream is an integrated midstream energy company that provides a range of services across five operating segments: Permian, North Texas, Oklahoma, Louisiana, and Corporate. The company specializes in the gathering, processing, transportation, and storage of natural gas, natural gas liquids, crude oil, and condensate, as well as offering brine disposal services. EnLink operates approximately 12,000 miles of pipelines, 21 natural gas processing plants, seven fractionation facilities, and various storage and terminal facilities. It plays a significant role in key North American oil and gas regions, including the Gulf Coast, Haynesville, and Permian basins. EnLink Midstream aims to deliver customized solutions that foster sustainable growth and value for its customers and stakeholders, leveraging its diverse asset base and strategic industry relationships. Founded in 2002 and headquartered in Dallas, Texas, the company was previously known as Crosstex Energy L.P. before rebranding in 2014.
Zahroof Valves
Series C in 2016
Zahroof Valves, Inc. is a Houston-based manufacturer specializing in performance valves for reciprocating gas compressors. The company is renowned for its Zahroof Performance Valves, which utilize patented Modular Reed Valve technology. These valves are designed to enhance compressor serviceability, increase reliability, and reduce power consumption by 5-15%, resulting in significant fuel savings and lowered operational costs for various industries including natural gas, oil and gas, refineries, and chemical plants. Zahroof Valves develops StraightFlo valves that feature a modular design, streamlining maintenance and improving overall compressor efficiency. Since its founding in 2010, Zahroof Valves has focused on delivering advanced solutions that minimize downtime and enhance productivity for its clients across multiple sectors.
Teal Natural Resources
Private Equity Round in 2016
Founded in 2016, Teal Natural Resources is an oil and gas exploration company based in Dallas, Texas. It focuses on acquiring and developing conventional and unconventional reserves, initially targeting the Eagle Ford Shale region in South Texas.
Colgate Energy
Private Equity Round in 2016
Colgate Energy LLC is a privately-held company based in Midland, Texas, specializing in the exploration and production of oil and natural gas. Founded in 2015 by James Walter and Will Hickey, the company concentrates on acquiring and developing both conventional and unconventional oil properties within the Permian Basin, a region known for its significant energy resources. Colgate Energy is dedicated to leveraging the potential of this area to enhance its production capabilities and contribute to the energy sector.
Torrent Oil
Acquisition in 2016
Torrent Oil LLC is an independent oil and natural gas company based in Houston, Texas, established in 2015. The company specializes in the acquisition and redevelopment of oil and gas assets primarily within the Gulf Coast, East Texas, and Ark-La-Tex regions. By focusing on these areas, Torrent Oil aims to facilitate energy distribution and enhance its clients' capabilities within the energy sector on a global scale.
Juniper Resources
Acquisition in 2015
Juniper Resources is an independent oil and gas company that primarily operates in the San Juan Basin. The company focuses on the acquisition, exploitation, and development of oil and gas assets. By enhancing the necessary infrastructure for energy production, Juniper Resources aims to support ongoing operations in the oil and gas sector.
Axia Energy II
Acquisition in 2015
Axia Energy II, LLC is an oil and gas exploration and production company based in Denver, Colorado, and was incorporated in 2009. The company specializes in the acquisition and development of oil and gas properties in the Rocky Mountains. It aims to create value for its investors by leveraging geological expertise, optimizing completion processes, and maintaining strict cost control.
Signum Instruments
Private Equity Round in 2015
Signum Instruments, Inc. is a Houston-based company founded in 2014, specializing in the manufacture of open-hole formation evaluation tools and related services for the oil and gas industry. The company offers a portfolio of micro slim measuring instruments that includes electrical and geo-mechanical equipment, designed to perform effectively under logging conditions. These tools assist clients in acquiring critical data from unconventional wells, enabling them to maximize their estimated ultimate recoveries (EURs), optimize completion processes, and enhance the net present value (NPV) of their well investments.
Oilfield Water Logistics
Private Equity Round in 2014
Oilfield Water Logistics, LLC is a provider of water infrastructure and services tailored for the energy industry. Established in 2014 and headquartered in Dallas, Texas, the company operates additional offices in Midland, Texas, and Denver, Colorado. It specializes in a range of services, including water supply, gathering, transport, reclamation, landfill operations, and disposal. With a network of pipelines and facilities located across several states, including Delaware, Texas, New Mexico, Colorado, Utah, and Wyoming, Oilfield Water Logistics plays a crucial role in enabling energy companies to efficiently manage their water requirements.
Zahroof Valves
Venture Round in 2013
Zahroof Valves, Inc. is a Houston-based manufacturer specializing in performance valves for reciprocating gas compressors. The company is renowned for its Zahroof Performance Valves, which utilize patented Modular Reed Valve technology. These valves are designed to enhance compressor serviceability, increase reliability, and reduce power consumption by 5-15%, resulting in significant fuel savings and lowered operational costs for various industries including natural gas, oil and gas, refineries, and chemical plants. Zahroof Valves develops StraightFlo valves that feature a modular design, streamlining maintenance and improving overall compressor efficiency. Since its founding in 2010, Zahroof Valves has focused on delivering advanced solutions that minimize downtime and enhance productivity for its clients across multiple sectors.
Community Energy
Series A in 2010
Community Energy, Inc. is a renewable energy development company based in Radnor, Pennsylvania, with an additional office in Boulder, Colorado. Founded in 1999, the company specializes in the development and construction of solar and wind energy projects for both residential and commercial customers across the United States. Community Energy focuses on utility-scale solar projects, as well as customer-sited and community-scale solar initiatives tailored for businesses, universities, and residential clients. By delivering renewable energy through direct sales and partnerships with electric utilities, the company has played a pivotal role in expanding the market for clean energy solutions. With over a decade of experience, Community Energy aims to meet the energy demands of large electric customers, utilities, cities, and communities, providing them with reliable, carbon-free energy options.
TPI Composites
Series B in 2009
TPI Composites, Inc. is a manufacturer specializing in composite wind blades and related precision molding and assembly systems, primarily for original equipment manufacturers. Founded in 1968 and headquartered in Scottsdale, Arizona, the company serves multiple industries, including wind energy and transportation, where it produces large-scale composite structures for applications such as buses, rail systems, and military vehicles. TPI operates factories across the United States, Mexico, and Asia, with a significant portion of its revenue coming from operations in Mexico. The company is known for its innovative technology that emphasizes high strength, lightweight, and durability in its products.
Southwest Windpower
Series C in 2009
Southwest Windpower, established in 1987, is a leading global manufacturer and distributor of small wind turbines, with a strong focus on quality, performance, and reliability. The company has shipped over 180,000 wind turbines to more than 120 countries, serving a variety of applications including remote sites, utility-connected homes, industrial, recreational, and farming uses. Headquartered in Broomfield, Colorado, with manufacturing facilities in Flagstaff, Arizona, and operations in Cologne, Germany, Southwest Windpower is committed to providing wind products that offer the lowest cost of energy while maintaining high standards of aesthetics, quietness, and simplicity. The company's mission is to be a responsible global leader in the design, production, and provision of wind turbines up to 40kW.
TPI Composites
Series A in 2007
TPI Composites, Inc. is a manufacturer specializing in composite wind blades and related precision molding and assembly systems, primarily for original equipment manufacturers. Founded in 1968 and headquartered in Scottsdale, Arizona, the company serves multiple industries, including wind energy and transportation, where it produces large-scale composite structures for applications such as buses, rail systems, and military vehicles. TPI operates factories across the United States, Mexico, and Asia, with a significant portion of its revenue coming from operations in Mexico. The company is known for its innovative technology that emphasizes high strength, lightweight, and durability in its products.
Southwest Windpower
Series B in 2007
Southwest Windpower, established in 1987, is a leading global manufacturer and distributor of small wind turbines, with a strong focus on quality, performance, and reliability. The company has shipped over 180,000 wind turbines to more than 120 countries, serving a variety of applications including remote sites, utility-connected homes, industrial, recreational, and farming uses. Headquartered in Broomfield, Colorado, with manufacturing facilities in Flagstaff, Arizona, and operations in Cologne, Germany, Southwest Windpower is committed to providing wind products that offer the lowest cost of energy while maintaining high standards of aesthetics, quietness, and simplicity. The company's mission is to be a responsible global leader in the design, production, and provision of wind turbines up to 40kW.
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