Participated · Seed · Aug 2026

Reservoir designs heat pump water heaters that learn household hot-water usage patterns to heat at the most efficient times and store energy as hot water. Its products include ultrasonic flow sensors for leak detection, and a “Max” model with recirculation and mixing valves for instant hot water and freeze protection. The company has installed about 100 units and targets around 1,000 installations by the end of next year; management says that scale would enable neighborhood-level grid relief and participation in utility demand response. Pricing is positioned to be competitive: the Core model sells for $5,000 (installation included) and the Max for $6,500, with Massachusetts rebates (about $1,050) reducing effective customer cost; Reservoir projects typical Boston homeowners could save up to $1,000 per year in energy costs. The company offers a 10-year warranty and has started its own plumbing arm to streamline deployment and sales.

Participated · Seed · Jun 2026

Red Metals was founded by Jackson Switzer to reshore copper refining and finished copper product manufacturing in the U.S. The company has developed a proprietary refining process that integrates physical processing, advanced sorting, and metallurgical refining into a single continuous operation to eliminate many traditional intermediate steps. Initially focused on domestic copper scrap, Red Metals’ first commercial product will be high-conductivity copper rod used in wire, magnet wire, and other electrical applications. The approach is intended to reduce supply chain complexity, lower emissions, and shorten production timelines from months to days. Red Metals plans to build its first production facility in Charleston, South Carolina, with a planned investment of about $70 million and expects the initial phase to create at least 45 jobs. The company targets growing end markets including data centers, grid modernization, electrification, and defense systems.

Participated · Equity · Mar 2026

Founded in 2023, Archimetis creates an artificial-intelligence decision-making system designed for refineries and other heavy-industry plants. The software aggregates scattered operational data and delivers real-time recommendations, helping plant teams overcome complex production decisions. By targeting the energy and chemical sectors, the company aims to unlock significant efficiency gains and cost savings. Archimetis differentiates itself through the Google-honed AI expertise of founder Paul Manwell. The fresh capital will be used to enhance the product and expand deployments across additional industrial facilities. No revenue, customer count, or other operating metrics were disclosed in the article.

Participated · Series A · Feb 2026

DG Matrix’s core product, the Interport, is a solid-state transformer that acts like a power router, combining and distributing electricity from sources such as solar, batteries and the grid. Each Interport can handle up to 2.4 MW, replacing multiple legacy transformers and uninterruptible power supplies while shrinking space requirements from two large skids to a single four-by-four-foot unit. The device boosts overall conversion efficiency to 95-98% compared with 82-90% for traditional setups and reduces component count by as much as 85%, which the company says should increase reliability. Initial customer units are rolling out in June, and 90% of the sales pipeline targets data centers, with the remainder focused on fleet EV charging. DG Matrix is also developing a rack-level “sidecar” product and envisions deploying Interports in micro- and mini-grids for remote communities to alleviate energy poverty. Future expansion plans include broader building-power applications and larger grid-edge projects. The company’s financial footing was strengthened by a recent $60 million Series A round, its first disclosed institutional raise.

Participated · Series B · Nov 2025

Overstory builds an AI-driven grid-resilience platform that analyzes high-resolution satellite data to identify vegetation and infrastructure risks for electric utilities. Its software pinpoints tree-by-tree threats, helping utilities reduce outages, prevent wildfires, and optimize maintenance budgets. The company recently introduced the next generation of its Wildfire Intelligence product, featuring a proprietary Fuel Detection Model that locates the highest-risk fuels and recommends precise mitigation actions. Overstory reports that it now serves six of the ten largest utilities across the Americas. The team has grown to more than 80 employees representing 16 nationalities and spans machine learning, data science, arboriculture, and wildfire expertise. With new leadership from incoming COO Tamara Mendelsohn, the firm plans to accelerate AI risk-model development, broaden its wildfire-prevention suite, and expand its global footprint. Overstory maintains dual headquarters in Boston and Amsterdam.