Harold Nussenfeld

Riverstone Holdings LLC operates as an energy focused investment manager. It conducts buyout and growth capital investments in the exploration and production, midstream, oilfield services, power, and renewable sectors of the energy industry. The company was founded by David Matthew Leuschen and Pierre Fernard Lapeyre, Jr. in 2000 and is headquartered in New York, NY.

Carbonfree Chemicals Holdings LLC develops a proprietary technologies that capture flue gases that would otherwise release carbon dioxide into the environment and transform into solid carbonate materials. It has three primary technologies include: SkyMine, SkyScraper, and SkyCycle a processes require less energy to remove harmful pollutants and safer ways to store carbon. The company was founded by Joe Jones in 2005 and is headquartered in Austin, TX.

Everactive, Inc. provides technology services. It offers sub-threshold processing and extremely low power RF technology to build the world’s lowest power wireless systems-on-chip. The company was founded by Denton Calhoun, David Wenzloff and Brendan Richaedson in 2012 and is headquartered in Charlottesville, VA.

Part of Archer Ltd., Downhole Injection Systems LLC is a company that specializes in chemical injection systems for oil and gas wells. The company is based in Midland, TX. The company was founded by Dale Redman. Downhole Injection Systems was acquired by Allis-Chalmers Energy, Inc. on December 15, 2004 for $3.14 million.

Chevron Technology Ventures LLC (Chevron Technology Ventures) is a venture capital subsidiary of Chevron Corporation founded in 1999 by Don Riley. The firm headquartered in San Ramon, California.

MicroSeismic, Inc. provides seismic monitoring, mapping, and imaging services. Its solutions include buriedarray, hydraulic fracture monitoring and mapping, reservoir, fracstar surface, passive seismic emission tomography and seimicity monitoring. The company was founded by Peter M. Duncan and Christopher Neale in 2003 and is headquartered in Houston, TX.

ConocoPhillips Technology Ventures (ConocoPhillips Technology Ventures ) is a Venture Capital firm founded by W. George Coyle in 2004. The firm headquartered in TX.

MineralSoft, Inc. engages in the provision of development solutions to manage oil and gas investments. It offers investment funds, family offices, banks, individual and trusts, foundation and endowments, corporations, E&P companies, government agencies, acquisition and divestitures, land and title, mapping, portfolio management, accounting, and audit and revenue recovery solutions. The company was founded by Jonathan Parker and Gabe Wilcox and is headquartered in Austin, TX.

Raptor Maps, Inc. uses remote sensing and data analytics to monitor crop health. It utilizes unmanned aerial vehicles and autopilot systems to capture agricultural data. The company was founded by Nikhil Vadhavkar, Forrest Meyen and Eddie Obropta, Jr. in 2015 and is headquartered in Somerville, MA.

Fracture ID, Inc. specializes in the field of drill bit geomechanics. It offers rock mechanics, elastic properties, fracture identification, completions, drillbit geomechanics, geophysics, geology, drilling operations and engineering. The company was founded by Christopher R. Neale in 2014 and is headquartered in Denver, CO.

Energy Innovation Capital Management LLC (Energy Innovation Capital) is a venture capital firm founded in 2015 by Jeffrey Clark. The firm is headquartered in Orinda, California.

Element Analytics, Inc. provides industrial analytics software. It also provides actionable insight and foresight into daily operations. The firm offers solutions to a variety of industries such as oil and gas, chemicals, manufacturing, mining, utilities, diversified, and more. The company was founded by Sameer Kalwani and David Mount in 2015 and is headquartered in San Francisco, CA.

The Redeye Apps Pty Ltd. provides purpose-built engineering management solutions. It offers an engineering design and data management solutions that helps clients improve the way they upload, work with, share, markup, approve, and manage their engineering drawings and data across the asset lifecycle. The company was founded on July 3, 2011 and is headquartered in Brisbane City, Australia.

Kelvin, Inc. provides industrial 3D motion intelligence system to improve asset performance. The company was founded by Peter Harding and is headquartered in San Francisco, CA.

ConnectDER, Inc. is a company that aims to accelerate the transition to clean energy by making clean distributed resources the default source of power for the 21st century. The company is based in Falls Church, VA and was founded by Whitman Fulton, who has been the CEO since incorporation. The company offers innovative products that simplify and accelerate the integration of distributed energy resources with the grid. ConnectDER's meter socket adapters are used by the largest electric power utilities and solar installers throughout the country, allowing anyone to connect solar panels or EV chargers to their home at a fraction of the typical time and cost.

Mira Labs, Inc. designs and develops smartphone powered augmented reality headset. The company was founded by Ben Taft, Matt Stern and Montana Reed and is headquartered in Los Angeles, CA.

Shoreline AS provides web based simulation software and consulting for the offshore wind industry. Its software assists developers, OEMs, financial institutions, insurance companies, vessel owners and service providers in general in analyzing the entire offshore wind project life cycle from early project assessment until decommission. The company was founded by Ole-Erik Vestøl Endrerud in 2014 and is headquartered in Stavanger, Norway.

Omnidian, Inc. engages in operation as a solar asset management firm that offers residential rooftop arrays. It offers risk assessment, portfolio management, and operations and reporting services. The company was founded by Mark Liffman, Ray Szylko, and David Kenny and is headquartered in Seattle, WA.

Blue Bear Capital LLC (Blue Bear Capital) is a venture capital firm founded in 2016 by Timothy L. Kopra. The firm is headquartered in Los Angeles, California.

Comitt Well Solutions Us Holding, Inc. engages in the provision of wellbore to produce oil or gas. The company was founded in 2016 and is headquartered in Katy, TX.

Axiom Exergy, Inc. develops refrigeration batteries for supermarkets, cold-storage facilities and food processors to store and deploy refrigeration. The firm’s product features an optional integrated backup cooling feature that helps to protect food from spoiling during power outages. The company was founded by Amrit Robbins and Anthony Diamond in November 2013 and is headquartered in Richmond, CA.

Expedi, Inc. engages in provision of procurement solutions to drilling operations. It products includes mud pumps, handling tools, centrifugal pumps, shale shakers, gauges and valves, rope, soap, dope, tools, and accessories. The company was founded by Lawrence Patrick Neal and Timothy Neal in 2017 and is headquartered in Houston, TX.

Pellucere Technologies, Inc. manufactures advanced optical coatings for energy and industry. Its products in development and testing include architectural-grade window coatings, military-grade dirt rejection shield, polycarbonate anti-soiling shield, high definition AR coating and lens AR coatings. The firm specializes in solar, optical coatings, anti-reflective and anti-soiling. The company was founded by Chih Hung (Alex) Chang in 2010 and is headquartered in Houston, TX.

Streamline Innovations, Inc. engages in the provision of water treatment services. It offers sour and acid gas treating and removal, sour groundwater treating, wastewater and odor control, produced water treating, and specialty chemical solutions to oil and gas, wastewater utilities, and industrial processes industries. The company was founded by David Sisk in 2015 and is headquartered in San Antonio, TX.

Datch, Inc. develops and operates software platform for communication. The firm specializes in industrial internet of things, internet 4.0, machine learning, industrial analytics, data consolidation and natural language processing. The company was founded by Ben Purcell and Mark Fosdike in 2016 and is headquartered in San Francisco, CA.

Voyager provides workflow management solutions. The company was founded by Matthew Costello and Bret Smart in 2018 and is headquartered in Houston, TX.

First Resonance, Inc. develops software solutions to aerospace manufacturing. Its product, Testhub, is a hardware testing platform that allows companies to manage, execute, and analyze real-world hardware tests. The firm has created industry-specific solutions to replace old methods of tracking and shipping rocketship parts. The company was founded by Karan Talati in 2018 and is headquartered in Los Angeles, CA.

Pani Energy, Inc. is a Canadian company that provides a cloud-based machine learning software platform to improve the efficiency of industrial and city-scale desalination and wastewater treatment plants. The company is based in Victoria, Canada. The company's award-winning AI Coach™ analyzes data from the plant and informs operators on how to optimize their plant's performance, saving time, resources, and the environment. The company was founded in 2017 by Devesh Bharadwaj, who has been the CEO since 2017.

Demex Group provides proprietary technology and the foundation of the climate resilience. The company was founded by Ed Byrns and is headquartered in Washington, DC.