Participated · Series B · Sep 2025

Founded in Norway in 2011, Nofence pioneered the world’s first commercial virtual fencing system for cattle, sheep and goats. Its solar-powered collars use GPS and mobile networks to define digital boundaries and deliver escalating audio warnings followed by a mild electric pulse if an animal crosses the line, all managed through an easy-to-use app. The technology supports rotational grazing, lowers labor and production costs, and improves land stewardship, making it attractive to climate-conscious farmers. Adoption has grown from pilot projects in 2016 to more than 150,000 collars sold, and the company now employs about 90 people across Norway, the UK, Ireland, Spain and the United States. Recent hiring of a U.S. managing director and national sales director underscores a push into the American market, where producers in 48 states are already using the product. With fresh capital, Nofence plans to accelerate expansion in North America and Europe, advance product development, and deepen customer support. Investor enthusiasm highlights the firm’s momentum and positions it to make virtual fencing a global standard in livestock management.

Participated · Equity · Mar 2025

XGS Energy builds a proprietary solid-state, water-independent geothermal system that uses thermally conductive materials to produce round-the-clock baseload power anywhere there is hot rock. Its Thermal Reach Enhancement (TRE) technology completed a shallow field test in 2024, and the company is operating its first commercial-scale well in California, validating predictive performance models and accumulating operating history. XGS positions its modular approach to decouple geothermal from traditional water- and geology-dependent constraints, aiming to unlock geographic flexibility, easier permitting, and faster deployment. The firm says it has a multi-gigawatt commercial project pipeline across the Western United States and is ramping commercial operations ahead of a planned growth equity round later this year. XGS is headquartered in Houston, Texas, and plans to aggressively expand its team through year-end to support deployment and project development. The company’s approach targets improved financeability to attract venture and infrastructure capital for large-scale geothermal projects. XGS Energy has developed a proprietary slurry — a mix of water, surfactants and conductive minerals (patent filings mention graphite‑like materials and silica) — that is injected between a metal casing and surrounding rock to fill cracks and improve heat conduction. The slurry’s surfactant breaks at higher temperatures, releasing minerals that settle into fractures a few feet from the borehole, permitting the company to use a single cased borehole rather than multiple wells. By keeping working fluid isolated inside the metal casing, XGS can avoid contaminated surface water and use lower‑cost, higher‑efficiency heat exchangers, reducing operating costs. CEO Josh Prueher says the technique makes wells more productive and predictable — “we know within 30 days where we’re going to be in 30 years” in terms of power production. XGS’s technology can be applied to both new and existing geothermal wells, and the company plans to develop a version for suitably hot legacy oil and gas wells to avoid plugging and abandonment costs. To help commercialize the technology, XGS recently raised funding to build a commercial‑scale prototype at an existing geothermal field in California. XGS Energy is a geothermal company headquartered in Palo Alto, California that develops a proprietary Thermal Reach Enhancement™ (TRE) system and closed-loop well architecture. Its TRE system uses materials the company says are 50 times more conductive than native rock to deliver high-efficiency thermal energy without dependence on water or specific geology. XGS positions the technology for global deployment and says it enables terawatt-scale geothermal heat and power. The company completed more than 24 months of lab testing and is building a North American prototype to demonstrate TRE at full commercial scale. That prototype is intended to validate predictive performance models and support first commercial projects in the Western United States, Japan, and the Philippines. XGS emphasizes that its closed-loop, water-independent approach allows deployment anywhere in the world, unlike traditional geothermal solutions that require hot water reservoirs and specific geological formations. XGS Energy develops proprietary geothermal heat-harvesting technology and a closed-loop well architecture intended to unlock scalable, affordable, carbon-free baseload power. The technology is designed to eliminate reliance on rare geological formations and water availability, allowing broader deployment of geothermal energy. XGS says its approach enables global deployment and terawatt-scale geothermal heat and power. The company plans to use recent financing to accelerate technology development and commercial progress. XGS announced a $19M financing package, including a $14M Series A led by Anzu Partners, to support development efforts. Headquartered in Palo Alto, the company changed its name from Geothermic Solution LLC to XGS Energy, Inc.

Participated · Series B · Apr 2024

CleanFiber develops patented technology that transforms recycled cardboard into high-performance, fire-resistant building insulation. The company is positioned as an eco-friendly building materials provider led by CEO Jonathan Strimling. Its product has been adopted by numerous installers across the Northeast and is estimated to have been installed in over 20,000 homes. CleanFiber raised a $28M Series B to support its growth. The company plans to use the funds to scale production, expand its product portfolio, and drive broader adoption of its solutions. The business emphasizes sustainability and building-performance benefits in its core offering. Buffalo-based CleanFiber processes used corrugated cardboard into cellulose insulation for new and existing homes. The company developed a chemical treatment process with scientists at the University of Maine (by 2009) and inherited UltraCell’s patents, later adding its own IP under CEO Jonathan Strimling, who joined in 2012. Its product is formulated to remove contaminants and minimize dust, and it is priced on par with competing insulation. CleanFiber is expanding production capacity to meet demand—existing customers have requested roughly four times the product the company currently ships. The business reports less than 1% monthly churn and net revenue retention well over 100%. It is not yet profitable but the CEO expects profitability within about a year once additional capacity is online. The company also cites favorable market tailwinds such as rebates from the Inflation Reduction Act.

Led · Series A · Jan 2023

Kuva Systems offers an image-based continuous monitoring solution that produces clear gas-plume images to detect, size and quantify methane emissions for oil and gas operators. Its camera-based system is positioned to enable cost-effective root-cause analysis, operational optimization, high-quality emissions data and regulatory compliance. The solution has been approved for regulatory use in jurisdictions including Colorado, New Mexico and Alberta. Kuva plans to use new proceeds to expand marketing, operations and product development, commercialize additional features, and grow its Calgary-based team. The company operates offices in Boston, Houston, Midland and Calgary. Financially, Kuva announced CAD 4,079,895 (approx. $3M) in interest-free, repayable federal funding from PrairiesCan that complements $5.7M recently received from prior investors, bringing the announced total to $8.7M to support market expansion. Kuva Systems is a Cambridge-based company that uses short-wave infrared cameras and IoT to autonomously monitor methane emissions at oil and gas facilities. Its platform detects leaks and automatically alerts clients with the time, location and intensity of releases. More than 20 oil and gas companies use Kuva’s technology to fix and prevent methane leaks and meet methane-related ESG targets. CEO Stefan Bokaemper said customers value the solution because it is intuitive, comprehensive and does not generate false alerts. The company expects platform growth driven by new regulations and rising interest in certified differentiated gas. Kuva raised $11.3 million in a Series A to scale its technology. Kuva Systems (formerly MultiSensor Scientific) offers an industrial IoT solution that continuously monitors and quantifies methane and VOC emissions using a low-cost infrared imaging system and cloud-based analytics. The platform automatically generates color-coded video clips and annotated release data when emission events are detected, enabling direct alerts and integration with customers’ work-order and production systems. Kuva emphasizes low false-positive rates and claims robustness to thermal infrared background variability that confuses other IR solutions. The company positions its offering to help oil and gas firms meet ESG and methane-intensity goals while lowering total cost of ownership by reducing secondary manual inspections. Kuva is beginning field installations at up to 100 sites in Alberta, with additional field testing planned in Texas. The company highlights a strong intellectual property portfolio protected by six issued patents, 15 patent applications, and numerous trade secrets. Concurrent with its industrial focus, the business rebranded from MultiSensor Scientific to Kuva Systems.

Led · Series C · Dec 2022

LineVision develops dynamic line-rating technology that uses sensors, including lidar, to monitor line sag, weather and other parameters and determine real-time transmission capacity. Its system typically enables lines to carry 15% to 40% more power, and in one ideal scenario the boost exceeded 50%. The company says its solution costs about 5% of building a new transmission line and that payback periods are often measured in months; a trade-organization study cited payback of less than six months in places like Kansas and Oklahoma. LineVision has spent the last five years building the product, expanding partnerships with major utilities, growing its team and recently moving into new offices in Somerville, Massachusetts near Greentown Labs where it incubated. It is integrating its technology with GE’s Grid Solutions to offer utilities a combined monitoring solution. The company positions its product as a way to bridge the gap while new transmission is built and to accelerate renewables integration by making better use of existing wires. LineVision, Inc., based in Somerville, Mass., offers non-contact sensor solutions that monitor the condition and behavior of high-voltage transmission lines. Its V3 sensors collect real-time data on line temperature, sag, horizontal motion and anomalies to improve line throughput and ensure reliable operation. Led by CEO Hudson Gilmer, the company sells to utilities and has secured deals with National Grid, Dominion Energy, Xcel Energy, Tennessee Valley Authority and other North American customers. LineVision also works with multiple European utilities through the Farcross Project to support Dynamic Line Ratings and cross-border interconnections. The company closed a $12.5M Series B and intends to use the funds to accelerate growth. LineVision, a spinout from Genscape based in Somerville, MA, provides utilities with advanced transmission line monitoring technology. Its turnkey, non-contact systems can be rapidly deployed without outages, live line work, or specialized equipment. The technology is designed to improve transmission line capacity, resilience and safety while enabling monitoring of asset health and the risk of aging lines. CEO Hudson Gilmer said the team is solving problems from unlocking additional capacity to monitoring asset health. In January 2019 LineVision closed a $2 million Series A led by Clean Energy Ventures. The company will use the new capital to scale operations and its supply chain to support utilities worldwide.