Constellation Technology Ventures — Full Portfolio

Stem provides an integrated software suite, PowerTrack, for monitoring, developing, deploying, and operating solar and energy storage assets, serving asset owners, operators, and stakeholders in the clean energy sector.

CleantechEnergySaaS

Co-investorsACTIVATE CAPITAL PARTNERSPUSH VenturesWIND VenturesMithril Capital Management

AtmosZero builds modular electrified heat pump boilers that draw heat from ambient air to produce emissions-free industrial steam as a drop-in replacement for fuel-burning boilers.

CleantechClimate TechEnergy

Addison Stark(Founder)in

Co-investorsEnergy Impact PartnersThe Engine VenturesAENUMitsubishi Heavy IndustriesStarlight VenturesVXI Capital

Bidgely offers UtilityAI, a platform that uses patented energy disaggregation to identify appliance-level usage (such as EVs, HVAC, and heat pumps) from smart meter data alone, without surveys or smart plugs.

AI & Machine LearningEnergySaaS

Co-investorsFuture Energy VenturesSnowflake Ventures

C3 AI develops an enterprise AI platform that unifies data, intelligent agents, and domain-specific AI models to help large organizations make faster and better operational decisions.

AI & Machine LearningEnterprise SoftwareSaaSSector AgnosticSan Jose, US

Thomas M. Siebel(Founder, Chairman, and CEO)Christopher Werner(Executive Officer, Director, Promoter)Dana Jurika(Executive Officer, Director, Promoter)Martin Gallon(Executive Officer, Director, Promoter)

Co-investorsBreyer Capital

ChargePoint provides networked electric vehicle charging infrastructure and management software for company vehicle fleets and motor pools.

EnergyHardwareIoTLogistics & Supply ChainMobility & TransportationSaaSCampbell, US

Richard Lowenthal(Director)Pasquale Romano(Executive Officer, Director)Antonio Canova(Executive Officer)Jonathan Kaplan(Executive Officer)

BoardNeil Suslak(Director)inBruce Chizen(Director)in

Co-investorsBMW i VenturesBraemar Energy VenturesClearvision VenturesEstag CapitalF4 VenturesMadison Parker Capital+6 more

DemandQ provides a software overlay that integrates with a building's existing automation system (via BACnet, Modbus, and other protocols) to reduce peak electricity demand by intelligently queuing HVAC and other equipment operation, without new hardware.

CleantechEnergySaaS

Co-investorsVodia Ventures

EnCharge AI develops advanced hardware and software solutions for AI computing, focused on semiconductor design and AI systems optimization.

AI & Machine LearningHardwareSemiconductorsSanta Clara, US

Naveen VermainKailash Gopalakrishnan(Founder)inEchere Iroagain

Co-investorsACVC PartnersAlleyCorpAnzu PartnersScout VenturesScout VenturesSIP Global Partners+3 more

GridBeyond operates a technology platform that manages distributed and flexible energy resources, using AI to dispatch flexibility from assets such as utility-scale renewables, battery storage and industrial load into energy markets.

AI & Machine LearningCleantechEnergy

Co-investorsAct Venture CapitalACT Venture CapitalClaret Capital PartnersEnergy Impact PartnersFurthr VCMirova+1 more

Kevala operates a cloud-based platform that uses energy data analytics to model the electrical grid, forecast electrification impacts, and support siting of solar and storage projects.

CleantechData & InfrastructureEnergySan Francisco, US

ARAM SHUMAVON(Executive Officer, Director, Promoter)in

BoardMARK FERRON(Director)

Co-investorsThin Line CapitalC5 Impact Partners

LevelTen Energy operates a platform that connects renewable energy developers with customers and market participants, facilitating project visibility and deal-making in the renewable energy sector.

B2B MarketplacesCleantechClimate TechEnergySaaSSeattle, US

Bryce Smith(Executive Officer, Director)inSmith Bryce(Executive Officer, Director)William Thomas(Executive Officer)

BoardDavid Cohen(Director)inKarly Wentz(Director)inGreg Lyons(Director)

Co-investorsAster CapitalB Capital GroupB4 CapitalPrelude VenturesTechstarsWireframe Ventures+1 more

Measurabl is a sustainability data platform for real estate organizations that enables measurement, management, and reporting of environmental performance across buildings and properties.

Climate TechData & InfrastructurePropTechSaaSSan Diego, US

Matt Ellis(Founder)inLance Onken(Founder)Maureen(CEO)Waters Maureen(Executive Officer)

BoardLindsay Luger(Director)inLiza Benson(Director)in

Co-investorsBroadscaleBuilding VenturesCamber CreekCrosscut VenturesEnergy Impact PartnersMultiplier Capital+9 more

Operant Networks provides a "Trust Fabric" that enforces per-action, least-privilege authorization, data privacy controls, and observability for AI agents, users, tools, and data in enterprise environments.

AI & Machine LearningCybersecurityEnterprise SoftwareRohnert Park, US

Co-investorsMSIVThin Line Capital

PosiGen is a residential solar company that installs and services solar energy systems for homeowners, including system monitoring and billing.

CleantechClimate TechEnergyMetairie, US

Thomas Neyhart(Executive Officer, Director)inBenjamin Norwood(Executive Officer, Director)

BoardMatthew Woods(Director)Margaret Anadu(Director)Aaron Dirks(Director)Timothy Anderson(Director)

Co-investorsBuilders FundCallais Capital ManagementCeniarthSJF VenturesEmerson Collective InvestingImpact Engine

Proterra designs and manufactures zero-emission battery systems for commercial vehicles.

CleantechHardwareMobility & TransportationGreenville, US

Ryan Popple(Executive Officer, Director)Eric McCarthy(Executive Officer)C. W. Plummer, Jr.(Executive Officer)Dave Rich(Executive Officer)Steven Rowe(Director)

BoardRob Johnson(Director)

Co-investorsBMW i VenturesConductive VenturesEnergy Impact PartnersEvolution VC PartnersMitsui Global InvestmentObvious Ventures+3 more

Qnovo develops battery performance technology, offering products and insights focused on improving battery performance for the battery tech industry.

AI & Machine LearningCleantechDeep TechEnergyHardwareMobility & TransportationMilpitas, US

Nadim Maluf(CEO & Co-Founder)Dania Ghantous(Co-Founder & VP, Technology)

Co-investorsClimate InvestmentIntel CapitalUS Venture PartnersKIA

Sparkfund provides deployment services to utilities for distributed energy resources (DERs), helping them design, deploy, and manage DER projects at scale across the grid.

CleantechClimate TechEnergyEnterprise Software

Pier LaFarge(Founder & CEO)in

Co-investorsEnergy Impact PartnersRET Ventures

Sunairio develops grid forecasting software that integrates energy, weather, and climate data to help energy traders, grid operators, and renewable asset developers optimize commercial decisions.

AI & Machine LearningCleantechClimate TechData & InfrastructureEnergyInsurTechBaltimore, US

Rob Cirincione(Founder & CEO)inMitchell Walk(Director)

BoardAlex Behar(Director)inDavid Arcara(Director)

Co-investorsBuoyant Ventures Management, LlcKeiki CapitalMassMutual VenturesRosecliff VenturesTechstarsThin Line Capital

SWTCH provides an EV charging management platform (SWTCH Cortex) that unifies Level 2, DC fast chargers, and smart outlets, with load management, billing, and monitoring tools.

CleantechEnergySaaS

Tandem PV manufactures high-efficiency perovskite-silicon tandem solar panels designed for U.S.-based commercial-scale production, serving electricity demand from AI, electrification, and data infrastructure.

CleantechEnergyHardwareSilicon Valley, US

Colin Bailie(Founder & CTO)Chris Eberspacher(Co-Founder)Scott Wharton(CEO)

BoardRik Wehbring(Director)

Co-investorsEclipseEclipse VenturesBand of AngelsBeyond Earth VenturesCongruent VenturesNew Climate Ventures

VoltServer develops fault-managed power distribution systems (Digital Electricity) for delivering electrical power to buildings and infrastructure projects.

CleantechData & InfrastructureEnergyHardwareEast Greenwich, US

Stephen Eaves(Executive Officer, Director)Steve Eaves(Founder & CEO)Charlie Garcia(CFO)Stanley J. Mlyniec(CTO)Ken Hydzik(EVP of Global Sales)Amber Fortney(Senior Director of Marketing / VP of Marketing)

Co-investorsClean Energy VentureSlater Technology FundClean Energy Ventures

XGS Energy develops a proprietary solid-state, closed-loop geothermal system that uses thermally conductive materials and a pipe-in-pipe heat exchanger to generate clean, round-the-clock power without dependence on water or specific rock geology.

CleantechClimate TechEnergyPalo Alto, US

Richard Chong(Chief Financial Officer)inMichael Danaher(Executive Officer)Ghazal Izadi(Executive Officer)inJoshua Prueher(Executive Officer, Director)Glen Robinson(Director)David Seldin(Director)

Co-investorsAligned Climate CapitalClearSkyClimate Innovation CapitalThin Line CapitalValo VenturesVoLo Earth Ventures+2 more