/Investor DB

Rice Investment Group — Full Portfolio

24 tracked investments · listed companies and verified rows first

NET Powernetpower.comin𝕏NYSE: NPWR

Net Power develops clean firm power generation that uses natural gas combined with carbon capture, based on the Allam Cycle (a direct-fired supercritical CO2 cycle).

CleantechClimate TechEnergyDurham, US

Danny Rice(President & Chief Executive Officer)Marc Horstman(President & Chief Operating Officer)Lee Shuman(Chief Financial Officer)inRon Rucker(General Counsel)inBruce Jenkins(Chief of Staff)inAmy Keyser(Chief Human Resources Officer)in

Aquasmartglobalaquasmartglobal.com

AquaSmart develops coated proppant technologies for the oil and gas industry, aimed at improving well completion performance, operational efficiency, and safety.

CleantechEnergyNew Materials

Austinelementsaustinelements.com

Austin Elements recovers high-specification battery precursors and critical minerals from spent lithium-ion batteries through recycling processes.

Circular EconomyCleantechNew MaterialsHouston, US

Dr. Jacob Jin(CEO, Founder, Director)in

Blackmountainsandblackmountainsand.comin

Iron Oak Energy is a proppant and solutions provider supplying frac sand and resin-coated proppants to oil and gas operators in North American shale plays.

EnergyNew MaterialsBlackmountain, US

bp Venturesbp.com

London, GB

Bob Dudleyin

Co-investorsClean Energy VenturesMetaProp

Cloverleafinfracloverleafinfra.comin

Cloverleaf Infrastructure develops large-scale clean energy and data infrastructure projects.

Data & InfrastructureEnergyHouston, US

Brian Janous(Founder)in

Cold Bore Technologycoldboretechnology.cominJul 2021

Cold Bore Technology builds digital completions data software for oil and gas well completion operations, including SmartPAD (a digital twin providing a standardized real-time dataset), IntelliSONIC (high-frequency pressure and acoustic monitoring), and OffsetWELLS (real-time FDI monitoring).

Data & InfrastructureEnergySaaSCalgary

Brett Chell(Director)inALEX FORTIN(Chief Technology Officer)inSHANE CASSELL(Chief Revenue Officer)inBLAIR LAYTON(Interim Chief Executive Officer and Chief Financial Officer)inCameron Brett Chell(Director)

BoardJAMIE LEARMOUTH(Director)

Co-investorsCanadian Business Growth Fundbp ventures

Combocurvecombocurve.comin

ComboCurve provides technical forecasting and economic modeling software for the energy industry.

EnergyEnterprise SoftwareSaaSHouston, US

Armand Paradis(CEO and Co-Founder)

Co-investorsBessemer Venture PartnersDragoneer Investment Group

Enduranceinfraenduranceinfra.com

Endurance Investment Partners is a private equity firm focused on sourcing, executing, and monitoring investments in energy and energy transition infrastructure assets.

Cloud ComputingEnergyEnterprise SoftwareDallas, US

John Spradling(Co-Founder and Partner)Trey Hatcher(Co-Founder and Partner)

EnerPureenerpure.techinAug 2026

EnerPure recycles used motor oil (UMO) using small modular recycling plants and a patented process, converting the waste product into a marine fuel product sold to shipping companies.

Circular EconomyCleantechEnergyWinnipeg

Robert Peterson(Director)Norman Barnabe(Director)Todd Habicht(Executive Chairman & Founder)Douglas Kroeker(Executive Officer)Tammy Habicht(Director)Albert Krahn(Director)

Co-investorsRed River Métis Business Development CorporationCanada Growth FundRice

Infinitumgoinfinitum.com

Infinitum designs and manufactures energy-efficient electric motor systems built around a printed circuit board (PCB) stator, aimed at reducing electricity consumption in HVAC, data centers, commercial/industrial, and mobility applications.

CleantechData & InfrastructureEnergyEnterprise SoftwareHardwareIoTAustin, US

Co-investorsMarunouchi Innovation PartnersSAIC Technologies Fund II, LLCGalvanize Climate Solutions

Kelvinkelvin.aiin𝕏

Kelvin provides a platform for building autonomous control applications that integrate machine learning models with industrial edge equipment.

AI & Machine LearningEnterprise SoftwareIoT

Co-investorsClimate InvestmentGraph VenturesRoyal Street Ventures Management Company, Llc

Landgatelandgate.comin

LandGate provides proprietary data and analytics for site selection, development, and investment analysis of energy and infrastructure projects including data centers, renewable energy, and EVs.

Data & InfrastructureEnergyEnterprise SoftwarePropTech

Yoann Hispa(Founder)in

Mtmt.energyin

AirJoule develops sorption technologies to extract water from air for data centers in water-stressed regions.

CleantechClimate TechEnergy

Overview Energyoverviewenergy.comin𝕏Sep 2022

Overview Energy develops space-based solar power systems that beam energy from space to Earth, drawing on expertise in aerospace, energy systems, and manufacturing.

CleantechEnergySpace TechCovina, US

Abdullah Al-Shakarchi(Co-CEO)inDr. Paul JaffeinDr. Patrick MockinHannah MacKayinSagi KfirinAndrew Cantino(Co-Founder of Overview Energy)in

Co-investorsAngel Collective Opportunity FundAurelia FoundryColle Capital PartnersDangerous VenturesJetstreamLowercarbon Capital+3 more

Persefonipersefoni.comin𝕏Apr 2025

Persefoni provides carbon accounting and climate training tools for portfolio company engagement.

AI & Machine LearningClimate TechEnterprise SoftwareFintechSaaSMesa, US

Kentaro Kawamori(Executive Officer, Director)inJason Frederick Offerman(Executive Officer, Director)Kim Stroh(Founder)in

BoardGreg Lyons(Director)Daniel Ahn(Director)inAudrey Constant(Director)

Co-investorsAlumni VenturesCarnrite VenturesEnergize CapitalMarketX VenturesParkway Venture CapitalPrelude Ventures+2 more

Pinonresourcesllcpinonresourcesllc.com

Piñon Resources is an oil and gas company focused on exploration and production operations in major U.S. basins, particularly the Permian Basin.

EnergyMidland, US

Thomas Favrot(Chief Executive Officer)Doug Schmidt(Vice President, Land and Business Development)

Simplicitisimpliciti.aiin

Simpliciti builds custom operational systems that embed AI and governance into companies' existing business processes, enabling teams to work with visible, structured workflows rather than managing fragmented tools and manual workarounds.

AI & Machine LearningEnterprise SoftwareSaaS

James Newsome(Co-Founder)Chelsea Wyssmann

Co-investorsCarnrite Ventures

Tejasproductiontejasproduction.comin

Tejas Production Services engineers, manufactures, and services oil and gas production and processing equipment, with fabrication facilities in Texas and Pennsylvania and service operations across major US production basins.

Advanced ManufacturingDeep TechEnergyHardwareGulf Coast, US

Trinitygasstoragetrinitygasstorage.com

Trinity Gas Storage develops natural gas storage infrastructure in Texas with high-capacity reservoirs designed to serve power generation, pipeline, utility, and LNG customers.

CleantechEnergyNE Texas, US

Jim Goetz(President and Chief Executive Officer)Larry Noble(Chief Operating Officer)

Other

Tracked investments with no reachable website or further public details — typically companies that wound down, renamed, or were absorbed.

Archaea EnergyAria EnergyCGFOAG Analytics

Rows marked “SEC filing” are inferred from directors named on the company's SEC Form D — public regulatory data, not a portfolio list published by the firm.