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 Arizona
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.
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.
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.
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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