net-zero
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Updapt Wants to Put ESG’s Paperwork to Work
Everstone uses Updapt to monitor more than 185 sustainability KPIs. The software company’s bigger bet is that the same data can help businesses decide what to change next.
EVORA Put a Climate Accountant Inside the Building
Its first software supplier folded before the contract ink dried. EVORA answered by spending millions on SIERA, buying the pipes that feed it, and turning sustainability paperwork into an investment tool.
The Solar Company That Bet on the Buildings Everyone Else Skipped
Isaac Baker and Ben Underwood built a solar company around the customers the industry finds too poor or too complicated. Nearly a decade in, the affordable-housing rooftops are paying them back.
The Startup That Turns Factory Exhaust Into a Power Plant - and Bills Nobody For It
Up to 58% of the energy fed into heavy industry escapes as waste heat. Kanin Energy built a business model that catches it, converts it to power, and hands the factory a check instead of an invoice.
The 750-Acre Bet: How a Chinese Owner Talked Americans Into Building Washers in Kentucky Again
General Electric sold its appliance business to a Chinese buyer and expected quiet decline. Instead, Haier handed the keys to the people running the machines - and GE Appliances started pouring billions back into Kentucky.
The Utility Betting $11 Billion That the Wind Off Virginia Beach Can Power a Data-Center Boom
It started as a Richmond streetcar company in 1909. Today Dominion Energy runs power plants, gas lines and a 176-turbine wind farm 27 miles out to sea - and the fastest-growing customers on its grid are warehouses full of servers.
Avarni
Nobody put 'mandatory climate disclosure' in your finance team's job description. Avarni makes carbon accounting the least painful thing on your FY26 plate. It's expert-guided, software-powered, and done in weeks. Audit-ready, or we keep working.
錫力科技 YC Synergy
錫力科技 (YC Synergy) is a Taiwan-based clean-energy company building hydrogen fuel cell power systems and end-to-end hydrogen infrastructure - electrolysis-based green hydrogen production, storage, and refueling. Founded in 2012 and headquartered in Xindian, New Taipei City, the firm designs and integrates fuel cell systems for stationary power, maritime vessels, and road transport, working with partners such as Germany's EKPO Fuel Cell Technologies and Stan Shih's zero-carbon ship venture Porrima. It was named Asia-Pacific Fuel Cell System Company of the Year by Energy Tech Review in 2024.
SensorFlow
SensorFlow is a Singapore-based proptech company that uses wireless IoT sensors and AI to help hotels monitor, analyze and automate their energy use - primarily air-conditioning. Its retrofit-ready hardware installs in minutes with no upfront cost and typically cuts HVAC energy consumption by around 30%, letting properties lower operating costs and carbon emissions while keeping guest rooms comfortable. Founded in 2016 and backed by investors including Openspace Ventures and Gaw Capital, the company serves hospitality brands across Asia-Pacific and beyond.
Greenly
Greenly is a French climate-tech company building carbon-accounting software that helps businesses of all sizes measure, report and reduce their greenhouse-gas emissions. Founded in Paris in 2019, its all-in-one sustainability suite automatically pulls data from financial transactions, utility bills, cloud usage and supply chains to calculate emissions across Scopes 1, 2 and 3, then pairs the data with human climate experts. Greenly serves roughly 3,500 clients across 25 countries and has raised about $78.6 million, including a $52 million Series B led by Fidelity International Strategic Ventures in 2024.
Scaler
Scaler is an ESG data platform built for the real estate industry that turns fragmented sustainability data into audit-ready reports and decarbonization roadmaps. Founded in 2021 and headquartered in New York and Amsterdam, its software helps asset managers, fund managers and compliance teams collect building-level energy, water and carbon data, run CRREM and net-zero analysis, and report against frameworks like GRESB, CSRD, SFDR and the EU Taxonomy - all from a single, traceable source of truth.
Sustainability Roundtable, Inc.
Sustainability Roundtable, Inc. (SR Inc) is a Boston-based, certified B Corporation that provides membership-based strategic advisory and support services in enterprise decarbonization. For more than fifteen years it has helped executives at nearly 100 Fortune 500 and high-growth companies set sustainability goals, drive progress, and report results through shared-cost research, one-on-one consulting, and a peer community. Its two flagship offerings are the Sustainable Business & Enterprise Roundtable (SBER) advisory service and the Net Zero Consortium for Buyers (NZCB), a confidential corporate renewable-energy buyers' community and transaction platform.
Credibl
Credibl is a San Francisco-based, AI-powered ESG and sustainability data management platform that helps companies, banks and investors measure, manage, validate and report environmental, social and governance data. Founded by Qwiklabs founder and ex-Googler Jitesh Shetty, it applies large language models and machine learning to consolidate fragmented sustainability data, detect anomalies and produce audit-ready, one-click disclosures across frameworks like CSRD, BRSR, TCFD, SASB, ISSB and CDP.
Pani
Pani (Pani Energy Inc.) is a Canadian climate-tech software company that puts a digital brain on top of the world's water treatment plants. Its flagship cloud platform, Pani Zed, consolidates messy sensor data from desalination, industrial and municipal facilities, builds a digital twin of each plant, and uses machine learning to tell operators exactly how to cut energy use, extend membrane life, and lower emissions - without new capital equipment or retrofits. Founded in 2017 by Devesh Bharadwaj and based in Victoria/Vancouver, British Columbia, Pani deploys across facilities in multiple countries and has landed on the Global Cleantech 100 list.
Solidec
Solidec is a Houston-based climate-tech company spun out of Rice University that builds modular electrolyzers to make essential chemicals - starting with ultra-pure hydrogen peroxide - on-site from just air, water, and electricity. Its porous solid-electrolyte reactor skips the centralized plants, hazardous trucking, and fossil-fuel feedstocks of conventional chemical production, cutting emissions by as much as 90%. Founded in 2023 by Ryan DuChanois, Yang Xia, and Rice professor Haotian Wang, the company raised an oversubscribed $2M pre-seed round and has been backed by Chevron Technology Ventures' Catalyst Program, the Activate Fellowship, and a NASA SBIR award.
Zero Waste Co.
Zero Waste Co. is a climate-tech and circular-economy company that turns agro-industrial byproducts and food waste into high-value resources - chiefly livestock feed - through technology-driven, tailor-made processes. Founded in 2020 and headquartered in Miami with operations across Latin America, it pairs its EcoHub processing facilities with a Carbon Solutions arm that measures, monetizes, and manages verified carbon credits, letting food and beverage producers turn waste liabilities into profit and measurable emissions reductions.
Caldera
Caldera is a UK clean-energy company decarbonizing industrial heat with Warmstone, a thermal battery built from recycled aluminium and volcanic rock inside vacuum-insulated heat cells. Its electric Storage Boiler converts cheap off-peak renewable electricity into industrial steam and hot water up to roughly 200C, offering factories a zero-emissions alternative to gas boilers. Founded in 2017 in Fareham, England, Caldera closed a 10M pound Series A led by Germany's GEA Group in 2025 and landed its first commercial order from the NHS.
Cortex Building Intelligence
Cortex Building Intelligence (now branded Cortex Sustainability Intelligence) is a New York and Nashville based proptech company that uses machine learning to help commercial real estate owners cut energy waste and carbon emissions. Founded in 2014 by Bryan Bennett, its energy insights platform turns raw building data into specific operational moves, helping office portfolios like Empire State Realty Trust, Silverstein Properties, Savanna, and RXR lower costs and meet decarbonization mandates such as NYC's Local Law 97.
Planet FWD
Planet FWD is a San Francisco climate management platform that helps consumer brands measure, reduce and neutralize their carbon footprint. Founded in 2019 by Zume co-founder Julia Collins, the company pairs an AI-powered life-cycle assessment engine and a database built on 16+ years of research with Scope 1, 2 and 3 corporate inventories aligned to the GHG Protocol and the Science Based Targets initiative. The result: brands like Patagonia Provisions, Kashi, Just Salad and Numi Organic Tea can put an auditable carbon number on the products people actually buy - and get a roadmap to shrink it, on average by about 35% per product.
Mantel
Mantel is a Cambridge, Massachusetts cleantech company building a molten-salt approach to industrial carbon capture. Spun out of MIT in 2022, its molten borate materials operate inside the high-temperature guts of boilers, kilns and furnaces, absorbing more than 95% of CO2 while recovering high-grade heat that offsets the energy cost of capture. The pitch is blunt: cut the cost of capturing a ton of carbon by more than half and make it work in the dirtiest, hottest corners of heavy industry - cement, steel, pulp and paper, power and refining.
Hathaway Dinwiddie
Hathaway Dinwiddie is a 100% employee-owned general contractor headquartered in San Francisco that has spent more than a century building the landmarks California works, lives, and heals in - from the Salesforce Tower to the Lucas Museum of Narrative Art and more than 10 million square feet of life-science space on the Peninsula. Built on planning, adaptation, and proactive partnership, the firm pairs century-old craft with advanced BIM workflows, LEED-driven sustainability, and an industry-leading safety record.
Heirloom Carbon
Heirloom Carbon Technologies is a San Francisco-based direct air capture company that uses limestone's natural CO2-absorbing properties to pull carbon dioxide permanently out of the atmosphere. Their process accelerates a geological phenomenon that normally takes thousands of years into a 3-day cycle: calcium oxide powder absorbs CO2 from ambient air, becomes limestone, gets heated in a renewable-energy-powered electric kiln to release the captured CO2, and repeats. The captured CO2 is then stored permanently underground or embedded in concrete. Founded in 2020, Heirloom opened America's first commercial DAC facility in Tracy, California in November 2023 and has raised over $354 million to expand capacity toward their goal of removing 1 billion tons of CO2 by 2035.
Samara
Samara is a Redwood City-based prefab housing company building factory-made backyard homes (ADUs) for California homeowners. Spun out of Airbnb by co-founder Joe Gebbia, Samara handles the entire process from design and permitting to manufacturing and installation, with a stated goal of using accessory dwelling units to ease the West Coast housing crunch.
Trellis Group
Trellis Group (formerly GreenBiz Group) is an Oakland-based media, events and peer-network company that has spent more than 25 years helping sustainability professionals turn climate ambition into corporate action. Its newsletters, research, and flagship events - GreenBiz, VERGE, Circularity, GreenFin and Bloom - convene the executives, investors and policymakers building the clean economy.
Verdigris
Verdigris is a Mountain View-based AI and IoT company that turns raw electrical data into actionable intelligence for data centers, commercial buildings, and industrial facilities. By clamping high-frequency sensors onto electrical circuits and running proprietary AI algorithms on the resulting waveform data, Verdigris gives facility operators real-time visibility into energy consumption, power quality, and equipment health - detecting failures before they happen, recovering stranded capacity, and driving 20-50% reductions in energy spend. Founded in 2011, the company serves Fortune 500 customers including T-Mobile, Verizon, and NVIDIA across 17 countries.