Best Climate & Energy Tools 2026

Merrillville IN regulated utility (NYSE: NI) at $5.5B 2024 revenue; $19.4B 2025-2029 capex plan for

AI mineral exploration startup raised $537M Series C at $2.96B valuation in Jan 2025; discovered maj

Michigan's largest utility with $12.7B FY2024 revenue; $25B electric capex through 2027; 80% CO2 red

Cambridge MA energy equipment spin-off from GE (NYSE: GEV) at $34.9B revenue 2024; 7,000+ gas turbin

Valero Energy (VLO) reported ~$140B revenue in FY2024. Largest independent petroleum refiner in the

Allentown PA regulated utility (NYSE: PPL) serving 3.5M customers in PA/KY/RI; $20B capital plan 202

Independent E&P with Permian, North Sea, and Egypt; $7.6B FY2024 revenue; offshore Suriname Block 58

Akron OH Midwest/Mid-Atlantic regulated utility (NYSE: FE) ~$13.5B FY2024 revenue; HB 6 scandal reco

Spring TX integrated oil and gas (NYSE: XOM) at $33.7B 2024 earnings, $339B revenue; Pioneer $60B ac

Houston oilfield completions and drilling (NYSE: HAL) $22.9B FY2024 revenue; #1 US hydraulic fractur

Oklahoma City largest US pure-play natural gas E&P (NASDAQ: EXE); Chesapeake + Southwestern merger O

New York NY. Board governance and ESG management platform serving 700,000+ board members globally, a

Houston natural gas pipeline infrastructure (NYSE: KMI) ~$14.8B FY2024 revenue, $8.0B Adj. EBITDA; 7

New York City regulated utility (NYSE: ED) at $1,868M adjusted earnings (+6%); CECONY serves 3.6M el

Evergy (NYSE: EVRG) reported ~$2.6B revenue in FY2024; regulated electric utility serving 1.7M custo

Dallas largest US natural gas-only utility (NYSE: ATO) ~$4.3B FY2024 revenue; 3.3M customers in 8 st

Williams Companies (WMB) reported ~$10.7B revenue in FY2024. Major natural gas pipeline and processi

Houston multi-basin E&P (NYSE: CTRA) at $5.458B 2024 revenue; Permian + Marcellus Shale + Anadarko,

Oracle (ORCL) utility software serving 2,000+ utilities with CIS billing, smart meter data managemen

Rosemead CA Southern California Edison utility (NYSE: EIX) ~$17.6B FY2024 revenue; Jan 2025 LA wildf

Houston specialty utility contractor (NYSE: PWR) $23.6B FY2024 revenue (+13%); largest US electric p

Schneider Electric (EPA: SU) EcoStruxure IoT platform across 480K+ installations and 1B+ connected d

SAP (NYSE: SAP) utility industry software suite with meter-to-cash billing, asset management, and wo

Findlay OH petroleum refining (NYSE: MPC); largest US refiner 3M barrels/day, CEO Maryann Mannen ele

Houston diversified energy (NYSE: PSX) at $145.5B 2024 revenue; Coastal Bend NGL acquisition $2.2B (

Eaton Corp (ETN) reported $24.9B revenue in FY2024, up 8% YoY. Global leader in power management for

Baltimore largest US nuclear operator (NASDAQ: CEG) at $23.6B FY2024 revenue; 21 reactors, Three Mil

Charlotte NC regulated utility (NYSE: DUK) ~$29B revenue; 8.4M electric customers, Carolinas load gr

Unicorn valuation ($1B+). $50M debt from HSBC (Oct 2025). 1,300 employees. Serves TSMC, Coca-Cola, a

Arlington VA global power company (NYSE: AES) at $12.28B 2024 revenue; 32 GW portfolio (50% renewabl

Houston oilfield services and energy technology (NASDAQ: BKR) ~$27.8B FY2024 revenue; IET LNG turbom

Frankfurt-listed (ETR: ENR) energy technology company at €34.5B FY2024 revenue with 13-15% growth 20

WEC Energy Group (WEC) reported ~$8.6B revenue in FY2024. Regulated electric and gas utility serving

Helion Energy is a leading private nuclear fusion company pursuing the world's first commercial fusi

Xcel Energy (XEL) reported ~$13.5B revenue in FY2024. Major regulated electric and natural gas utili

Top-tier US independent E&P with 1.07M BOE/day; premium-return drilling culture; Dorado gas play for

Springfield MA regulated New England utility (NYSE: ES) ~$11.7B FY2024 revenue; offshore wind exit $

Vistra Energy (VST) reported $16.7B revenue in FY2024, up 63% YoY (post-Energy Harbor acquisition).

Largest independent E&P with 2M BOE/day; $22.5B Marathon Oil acquisition 2024; $40/bbl breakeven por

San Francisco Northern California utility (NYSE: PCG) ~$22.7B FY2024 revenue; post-2020 bankruptcy,

Phoenix AZ regulated utility (NYSE: PNW) at $5.12B 2024 revenue, net income +21%; TSMC/Intel semicon

Schlumberger / SLB (SLB) reported ~$36.3B revenue in FY2024. World's largest oilfield services compa

Diversified midstream infrastructure with $23.7B FY2024 revenue; $18.8B Magellan acquisition 2023 ad

Third-largest Permian producer after $26B Endeavor acquisition (2024); 880,000 BOE/day; sub-$38/bbl

St. Louis MO regulated utility (NYSE: AEE) ~$8.2B revenue; 2.4M electric + 900K gas customers in MO/

Texas Pacific Land (TPL) reported ~$900M revenue in FY2024. Largest private landowner in Texas, earn

Chicago Mid-Atlantic/Midwest regulated utility (NASDAQ: EXC) ~$21.6B FY2024 revenue; ComEd/PECO/BGE/

ABB (NYSE: ABB) industrial IoT platform connecting 70M+ devices for predictive maintenance and perfo

Oklahoma City multi-basin oil & gas E&P (NYSE: DVN) ~$14B revenue; Permian Delaware Basin + Willisto

Permian-led integrated E&P with $26.2B FY2024 revenue; Berkshire Hathaway ~29% stake; $12B CrownRock

NJ's largest regulated utility with ~4.2M combined electric/gas customers; $9.8B FY2024 revenue; pur

Columbus OH multi-state electric utility (NASDAQ: AEP) ~$19.9B FY2024 revenue; 40K+ miles transmissi

Pittsburgh largest US natural gas producer (NYSE: EQT) at 2,100+ Bcfe annual volume; Marcellus Shale

Jackson MI Michigan regulated utility (NYSE: CMS) ~$8.4B FY2024 revenue; Consumers Energy 6.8M custo

Targa Resources (TRGP) reported ~$18.2B revenue in FY2024. Major midstream natural gas gathering, pr

Octopus Energy AI platform spun out at $8.65B valuation with $1B funding led by D1 Capital; 50M+ acc

Enhanced geothermal leader raised $462M Series E in Dec 2025 led by B Capital with Google; Cape Stat

Richmond VA regulated utility (NYSE: D); $50.1B five-year capital plan (2025-2029, $17B data center

Sempra (SRE) reported ~$17.1B revenue in FY2024. Major utility holding company owning SoCal Gas, SDG

Madison WI Midwest regulated utility (NASDAQ: LNT) at $3.04 EPS (2024); 1,500 MW solar + 1,800 MW wi

Largest US publicly traded water utility; 14 million people served; $4.3B FY2024 revenue; $3.3B/year

New Orleans Gulf South regulated utility (NYSE: ETR) ~$12B revenue; 1,500 MW new gas gen for Meta da

Swiss smart meter and grid technology company with CHF 2B revenue; advanced metering infrastructure

NASA-derived nickel-hydrogen battery company raised $300M Series B extension in Mar 2026 bringing to

Raptor Maps is a solar energy analytics company using AI and drone imagery to inspect solar farms, d

Southern Company (SO) reported ~$23.5B revenue in FY2024. Large regulated electric and natural gas u

$272M total raised. Commercial-scale thermal battery deployments launching in 2026. DOE-backed cemen

$2.4B revenue 2024 (+12% YoY); $324M EBITDA (+43% YoY); $208M free cash flow (+$110M YoY); 2M Xcel E

$475M committed for two Louisiana DAC facilities (17K + 100K tonne/yr). First commercial-scale DAC g

New Zealand ag-tech company raised $220M Series E at $2B valuation led by Founders Fund; 1M+ solar-p

Secured $1B Google data center deal (Feb 2026) + 12 GWh Crusoe deal (Mar 2026). Pursuing ~$500M pre-

Clean energy storage company with 1,000 MW+ under management; Athena AI optimizes battery dispatch f

GE Vernova grid management software for utilities; Smallworld GIS, SCADA/EMS, and ADMS platforms ben

German ESG software unicorn raised $100M Series C at $1B+ from BlackRock-Temasek JV Decarbonization

Secured $213.6M DOE loan + $50M (Mar 2026) for organic nitrogen fertilizer scale-up. Bioforge MN fac

C3.ai enterprise AI application for energy optimization; ML applied to utility and industrial energy

Raised $232M total ($130M Series C + $102M Series D) in Feb 2026 at $1B+ unicorn valuation. Founded

Vistra Energy (VST) reported $16.7B revenue in FY2024, up 63% YoY (post-Energy Harbor acquisition).

Ottawa Canada ESG management and reporting platform for enterprises and municipalities with deep Sal

Gridware is a grid intelligence company deploying sensor hardware on power lines to detect grid faul

Zephyr Fusion is developing compact fusion reactor technology for industrial heat applications, targ

Utility clean energy software platform for demand response and EV managed charging; serving 80 utili

$297M total raised. Bengaluru factory actively shipping PEM electrolyzers at commercial volumes in 2

London and Paris carbon management platform raised $73M; visual carbon map shows value chain emissio

Bright is a solar energy marketplace and community solar provider in Mexico and Latin America, makin

Solar panel installation robotics startup with autonomous SunBot for commercial rooftop deployments;

Commonwealth Fusion Systems (CFS) is building compact high-temperature superconducting fusion reacto

Denver CO supply chain sustainability management platform for scope 3 supplier engagement; serves mi

Jord BioScience raised $25M in 2025 for biological soil amendments that enhance nitrogen fixation an

Tempe AZ US solar module leader (NASDAQ: FSLR) at $4.2B 2024 revenue (+27%) with 23.5 GW total capac

Willow Rock 500MW/4,000MWh A-CAES project received final power plant license (Dec 2025). California

Residential clean energy platform simplifying solar, battery storage, and home electrification upgra

Competitive retail electricity + home services company; $29.1B FY2024 revenue; Vivint Smart Home acq

Maritime carbon capture startup using calcium oxide chemistry to capture ship exhaust CO2 as solid c

Torus raised $100M+ for its AI-driven solar, battery storage, and EV charging platform that optimize

ZeroAvia is a hydrogen-electric aviation company developing zero-emission powertrains for regional a

Raised $45M total including $20M Series A (Munich Re Ventures, DCVC, Breakthrough Energy). Integrate

Raised $700M Series D (Nov 2025). Fluor signed project management contract for Seadrift Texas facili

AI solar plant monitoring delivering 10% revenue increase and 700 fault preventions per year; YC-bac

Kalamazoo MI. Acquired by Wolters Kluwer in 2023. SME sustainability management platform for carbon

AI-powered energy management platform for grid-scale optimization; raised $94.5M total including Sam

Spanish startup raised $130M Series B in Apr 2026 for AI earth mapping satellite constellation; $225

Alga Biosciences is a biotech company engineering methane-reducing feed additives derived from seawe

Raised $68M total in 16 months. Backed by Nvidia, GE Vernova, Siemens. Turns AI data centers into di

$17.5M DOE manufacturing grant for Detroit factory (100,000 units/year). Deployed in NYC and Boston

Ammobia raised $40M in 2024 for its modular electrochemical ammonia synthesis technology that produc

Carbon management platform for SMEs and mid-market companies with automated data collection and net-

Malta Inc stores electricity as heat in molten salt and cold in antifreeze for days or weeks, enabli

Stem Inc operates an AI-driven energy storage optimization platform that maximizes the value of batt

$300M funding; $1.4B valuation 2022 unicorn; $75M revenue Sept 2025; 286 employees; rebranded Avatho

Grid capacity mapping platform for solar and storage developers pre-computing interconnection availa

Xpansiv operates CBL, the world's largest spot commodity exchange for environmental assets; $1B+ ann

Arcadia provides a community solar and clean energy platform enabling any homeowner or renter to acc

Kitekraft is a German airborne wind energy company developing kites that fly at high altitudes where

Rondo Energy builds heat batteries that store renewable electricity as high-temperature heat for ind

Base Power raised $200M Series B in 2025 for its home battery service that deploys Tesla Powerwalls

Wren is a personal carbon footprint tracker and offset subscription platform that helps individuals

Greenly is a carbon accounting platform helping SMEs and enterprises measure, reduce, and offset the

Raised $450M Series A (Feb 2026) — largest fusion Series A ever — led by Bessemer and GV. Founded by

Harvest Thermal makes a smart home heating and cooling system that stores thermal energy during chea

Corgi raised $45M in 2025 for AI-powered grid interconnection software that automates the slow, manu

Uplight-acquired DERMS and VPP platform managing 3,500 MW of flexibility for National Grid and NextE

AI forest carbon monitoring pioneer acquired by Carbon Direct in late 2025; satellite plus ML platfo

Normative is a carbon accounting software company providing science-based emissions calculation and

Cambridge home energy monitor using ML to identify appliances from electrical signatures; $56M GV-ba

Raised $20M first tranche of $45M Series B (Jan 2026) led by WestBridge Capital. Profitable. Google

Phase Biolabs develops microbe-based agricultural biostimulants that boost crop resilience and yield

Coolset is a sustainability management platform for mid-sized companies that automates emissions rep

South Pole is a Zurich-based carbon project developer and climate solutions firm; 1,000+ employees i

Rubicon Carbon is a carbon credit investment and distribution platform aggregating high-quality cred

San Jose solid oxide fuel cell manufacturer (NYSE: BE) at $1.47B 2024 revenue; $5B Brookfield partne

Raised $55M Series A + $41M from Frontier (Oct 2025). $1B+ GridMarket order for up to 5 GW of turbin

Raised $80M (Jul 2025) at $700M valuation led by Korea Development Bank. Ammonia-to-power for ships

London, UK. Raised $10M+. Scope 3 emissions intelligence platform for large enterprises, focusing on

Virtual Peaker provides demand flexibility software that enables utilities to control customer devic

San Jose residential solar brand restructured via $45M Complete Solaria bankruptcy acquisition Sept

YC-backed AI renewable energy developer finding profitable land/grid connections for solar and wind

Vista Power develops AI-optimized distributed energy storage and grid management systems, helping ut

AI electricity market analytics for grid-connected battery storage operators; revenue optimization a

Dutch climate tech converting captured CO2 into building materials. Carbon mineralization 10M times

Sylvera provides independent ratings and data on carbon credits, helping buyers distinguish high-qua

BinSentry raised $30M+ for its IoT sensor and AI platform that predicts grain bin inventory and qual

Paris YC W23 hydrogen autonomous airships for pipeline/power line inspection with 220-mile range; $3

Berlin Germany sustainability and carbon management SaaS raised €20M+; serves 200+ companies across

Compact fusion company raised $29M in Feb 2026 and secured $5.2M DARPA contract in Apr 2026; pursuin

Raised $60M Series A (Feb 2026) led by Engine Ventures with ABB, Chevron Technology Ventures, Clean

Santiago solar marketplace connecting Chilean homeowners to installers and financing; YC-backed $1.2

Sinai Technologies provides a decarbonization planning platform that models carbon reduction scenari

Selected for two separate DOE DAC Hubs (Red Rocks + CALDAC). Breaking ground on commercial pilot in

Nuvation Energy provides advanced battery management systems and energy storage solutions that impro

Oakland DLE lithium extraction technology ($318M total, $145M T. Rowe Price Series C); 5th gen 20x p

Verra administers the Verified Carbon Standard (VCS), the world's most widely used voluntary carbon

Holland MI sodium-ion battery manufacturer (founded 2012) — PERMANENTLY CLOSED September 2025; $373M

Paris, France. ESG reporting automation platform helping companies comply with EU CSRD and SFDR regu

Preparing $1.5B equity+debt raise (Apr 2026). Existing Waymo partnership. Only company building AV-d

Cairo utility management platform reducing revenue losses by 45% for 11 utilities across Egypt and P

First company to receive US federal permit for open-ocean carbon removal (2026 regulatory milestone)

LA battery AI using reinforcement learning for grid-scale BESS optimization with CAISO certification

Berlin, Germany. Industrial carbon intelligence platform for manufacturing and supply chain decarbon

Fremont CA solar tracker market leader (NASDAQ: NXT) ~$3B revenue; TrueCapture AI sky-sensing softwa

Raised $28.1M total. ML-based Dynamic Congestion Management unlocks up to 100% more capacity on exis

AI supply chain carbon accounting platform with asset-level facility emissions for metals, mining, a

Raised $140M Series A (Jan 2026) led by Decisive Point. Backed by a16z and Chevron Ventures. Buildin

World's largest wind/solar producer and FPL Florida utility; $24.5B FY2024 revenue; IRA tax credits

Raised $24M Series A (Feb 2026) led by UVC Partners. €1.92M Dutch government grant (Apr 2026). Build

AI HVAC optimization platform reducing industrial energy costs 15-30% in Southeast Asian factories;

Raised $140M Series B (Feb 2026) led by a16z American Dynamism and Breakthrough Energy Ventures. Fou

Raised $20M Series B (Dec 2025) led by Energy Impact Partners and Galvanize Climate Solutions. ~1,00

SF battery intelligence software using ML for EV fleet and grid storage optimization; YC W20 $29-48.

Sealed finances and installs home weatherization and electrification upgrades, paying itself back fr

Emitwise provides enterprise greenhouse gas management software with automated Scope 3 supply chain

SINAI Technologies is a climate platform for enterprise carbon management, helping companies measure

Impossible Metals is developing underwater robotic collectors for deep-sea polymetallic nodules, pro

BeZero Carbon rates individual carbon credits on a standardized scale to help buyers assess quality

Secured $94M debt facility (Feb 2026) for 114MW SunCentral 2 project — largest private sector solar

Carbon capture device for semi trucks and freight trains reducing diesel exhaust; $117M raised from

Care Weather provides hyperlocal AI weather forecasting APIs for agriculture, insurance, and infrast

Sympower raised €100M+ to operate the largest independent demand flexibility aggregator in Europe, e

Persefoni is an enterprise climate management platform enabling companies to measure, analyze, and r

Satellite methane emissions monitoring platform for oil and gas, agriculture, and waste sectors; $4M

North America's first commercial-scale ocean CDR plant under construction in Quebec with Deep Sky. B

AI energy disaggregation platform turning smart meter data into appliance-level insights for utiliti

Raised $80M Series A (Nov 2025). Silicon-carbide SST spun out of Nanyang Technological University. B

Zanskar raised $30M in 2024 for AI-powered geothermal exploration software that uses seismic, gravit

Leap provides a market access platform enabling distributed energy resources like batteries, EV char

Voltus operates a demand response platform that pays commercial and industrial customers to reduce e

Oklo (OKLO) is a next-generation fission company developing advanced small modular nuclear reactors

Palmetto is a residential solar technology platform connecting homeowners with solar providers and p

EOS Energy makes zinc-based battery storage systems offering a safer and lower-cost alternative to l

Hilo raised $100M+ and operates the largest residential demand response network in Quebec, using sma

YC W26 AI uranium and mineral exploration; NASA and BCG alumni founders; ingests 70+ years of geosci

Agentic AI platform accelerating renewable energy project development with site screening and permit

ALT TEX creates AI-designed sustainable textile alternatives, using machine learning to develop high

Boden Sweden green hydrogen steel plant (rebranded from H2 Green Steel to Stegra 2024); €6.5B funded

Powin delivers utility-scale battery energy storage systems with integrated software for grid operat