Third Sphere

Urbint helps leading utilities and infrastructure companies prevent incidents, protect workers, and prepare for the next 50 years of operational resilience through AI-powered solutions.

Rachio provides smart watering devices and solutions that integrate with home automation systems to optimize irrigation based on weather conditions, helping users save water and maintain healthy landscapes.

ChargeLab is the operating system for EV chargers, providing back-end software for EV charger manufacturers, turnkey installers, and network operators in North America.

Mark43 is a public safety technology company that provides a cloud-based platform for law enforcement and public safety agencies, offering tools for records management, analytics, and compliance.

Circuit offers local electric shuttle services, providing a sustainable transportation solution for urban areas.

Bowery Farming is a modern farming company that reimagines agriculture by growing flavorful, sustainable, and safe produce indoors, right outside of cities. Utilizing vertical farming techniques and advanced technology, Bowery aims to maximize yield while minimizing resource consumption, ensuring that their produce is both delicious and environmentally friendly.

Sonic Fire Tech develops innovative fire suppression systems using patented infrasound technology to prevent wildfires without water or chemicals. Founded by former NASA engineers, their solutions provide rapid, damage-free protection for homes and critical infrastructure.

Near Space Labs specializes in providing high-resolution aerial imagery and data analytics using advanced balloon technology to capture images from the near-space environment.

AccessGrid provides an API for NFC access passes on mobile devices, enabling secure access control solutions compatible with MIFARE DESFire technology. The platform allows users to manage mobile keys for Apple and Google Wallet, catering to startups, access control integrators, and large enterprises.

Sention Technologies provides measurement and data solutions for the electrochemical power industry, specializing in ultrasound, X-ray computed tomography, and electrochemical testing, combined with artificial intelligence to enhance battery development and manufacturing.

Nevoya is a fully-electric trucking carrier focused on zero-emissions freight movement, utilizing AI-first operations to optimize logistics and enhance efficiency.

EvolOH specializes in high-throughput manufacturing of electrochemical stacks for clean hydrogen production, focusing on decarbonizing the chemical industry with innovative electrolyzer technology.

Canada's largest dedicated climate-tech seed fund with over $180M–$200M AUM. Operates a capital + talent model with shared talent hub for portfolio companies. Only backs business models where revenue growth is directly tied to climate outcomes and tracks tonnes of CO₂e mitigated as their north star metric. Founded by Mike Winterfield, formerly President of Randstad Professionals managing $300M in revenue.

Early-stage and continuity backer that enters as a first check, leveraging deep cleantech cycles experience and multidisciplinary underwriting to support technically complex hardware-plus-software climate founders through valley of death. Co-founded by cleantech venture veterans investing through multiple boom-and-bust cycles since the mid-2000s, providing deep pattern recognition and disciplined approach shaped by Cleantech 1.0 experience. Operates with long-duration fund structure allowing entry at earliest stages and continued backing through separate Continuity Fund as companies scale.

Rolling micro-fund and syndicate that mobilizes 2,000+ operator and angel LP co-investors into a broad distribution and mentorship network for climate startups.

Operator-led, software-first climate-tech investor focusing on energy, AI, automation and robotics, helping founders craft consumer-grade storytelling and go-to-market to position companies as acquisition targets in an expected M&A boom.

Prelude Ventures manages capital exclusively for the climate-focused Simons family, creating a single-LP structure that demands strict venture returns from a 100% climate portfolio while applying a hard "no fossil fuels" rule that rejects any technology making oil, gas, or coal extraction cheaper or longer-lived. The firm combines deep technical operating experience with climate activism roots and has invested continuously through climate tech's "dark years" since 2009, positioning itself as a climate generalist comfortable with high capital intensity and long hardware timelines across the entire low-carbon economy.