# Carmichael Roberts

> Carmichael Roberts is a Series A investor at Material Impact backing Energy and Renewable Energy. See 139 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Fund: [Material Impact](https://shizune.co/investors/profile/material-impact-fund)
- Location: Boston, United States
- Total investments: 139
- Last investment: Jun 2026
- Lead investor: 55%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/in/carmichaelsroberts
- X (Twitter): https://twitter.com/carmichaelvc

Carmichael Roberts is a Series A investor at Material Impact in Boston focused on Energy and Renewable Energy. Carmichael Roberts is the Founder and Managing Partner of Material Impact. He previously worked at Foro Energy as a Lead Director. Carmichael Roberts attended MIT Sloan School of Management.

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Energy | 20 | 14% |
| Renewable Energy | 17 | 12% |
| Manufacturing | 10 | 7% |
| Industrial | 7 | 5% |
| CleanTech | 6 | 4% |

69 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Series A | 38 | 27% |
| Series B | 23 | 17% |
| Funding Round | 11 | 8% |
| Seed | 9 | 6% |
| Series C | 9 | 6% |

7 stages tracked in total.

### Country

| Country | Investments | Share |
| --- | --- | --- |
| United States | 51 | 37% |
| Canada | 3 | 2% |
| France | 3 | 2% |
| Sweden | 2 | 1% |
| Spain | 1 | 1% |

8 countries tracked in total.

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Foundation Alloy | Foundation Alloy leverage advanced materials technology to design novel alloys optimized for additive manufacturing. | $22M | Series A | Jun 16, 2026 |  |
| Mantle8 | Mantle8 is a natural hydrogen exploration company. It has developed geological models and imaging technologies that detect the best natural hydrogen locations with “world-first accuracy“ | $36.4M | Series A | May 13, 2026 |  |
| Rumin8 | Rumin8 is tackling one of the biggest contributors to climate change: methane emissions from livestock. The digestive process of beef and dairy cattle accounts for a full 3.7% of all greenhouse gas emissions, a huge contribution from a single source. With billions of people around the world relying on animal proteins as part of their daily diet,eliminating livestock methane production is a powerful lever in the quest toward a climate-optimal future.Rumin8 has invented a technology that has been shown to reduce the emissions from cattle by up to 95%. Our technology productizes the anti-methane compounds that occur naturally in plants and turns them into dietary supplements for livestock. The results are a reduction in methane emissions by up to 95%, increase in efficiency of the animal’s digestive systems, and more energy for the animal to growWe are on a mission to decarbonize hundreds of millions of cattle around the world so the global food system can take a giant step forward. | $3M | Venture - Series Unknown | Mar 25, 2026 |  |
| ZeroAvia | ZeroAvia provides hydrogen-electric propulsion systems designed to eliminate aviation emissions while maintaining operational efficiency. The company focuses on scalable technologies that can retrofit existing aircraft and support sustainable aviation. By partnering with various stakeholders, ZeroAvia aims to revolutionize the aviation industrywith cleaner, more efficient flight options. |  |  | Dec 22, 2025 |  |
| Fourth Power | Fourth Power is an energy storage startup that uses thermal batteries. Through utility-scale thermal storage, the technique transforms renewable energy into an on-demand energy source. | $20M | Series A | Sep 16, 2025 |  |
| Commonwealth Fusion Systems | Commonwealth Fusion Systems develops fusion energy systems using high-temperature superconducting (HTS) magnets to create compact tokamak reactors. It is building SPARC, a demonstration device designed to achieve net energy gain from fusion and laying the groundwork for ARC, a grid-connected fusion power plant targeting early 2030s operation. Thecompany partners with MIT and manufactures its HTS magnets and related components, applying peer-reviewed science in its firewalling of plasma and reactor engineering. It has introduced innovations like the PIT VIPER superconducting cable to support pulsed-power magnet systems and accelerate readiness for commercial fusion. | $863M | Series B | Aug 27, 2025 |  |
| Planted | Planted Solar focuses on driving the transition of clean energy. | $12M | Series A | Jul 29, 2025 |  |
| GeologicAI | GeologicAI is a software company specializes in Oil and Gas software. | $44M | Series B | Jul 17, 2025 |  |
| Boston Metal | Boston Metal is a provider of industrial-scale, metals production solutions utilizing its Molten Oxide Electrolysis (MOE) process. MOE provides the metals industry with a more efficient, lower cost, and greener solution for the production of a wide array of metals and alloys from a wide variety of feedstocks. Boston Metal was spun-out of MIT in2012 with an investment from Ingo Wender and has since scaled the technology 1,000x and produced thousands of kilograms of metal. Boston Metal’s headquarters and industrial development center are located in Woburn, MA. | $51M | Convertible Note | Jul 10, 2025 |  |
| Fervo Energy | Fervo Energy is a next-generation geothermal developer generating clean power in new places. Fervo Energy commercializes proprietary technology to own, develop, and operate geothermal assets as the dispatchable foundation to a 100% clean energy future. | $100M | Venture - Series Unknown | Jun 11, 2025 |  |

10 of 139 investments shown.

## Co-investors
- [Lowercarbon Capital](https://shizune.co/investors/profile/lowercarbon-capital) — VC Fund, 15 deals together
- [Prelude Ventures](https://shizune.co/investors/profile/prelude-ventures-llc) — VC Fund, 15 deals together
- [BHP Ventures](https://shizune.co/investors/profile/bhp-ventures) — VC Fund, 9 deals together
- [Baruch Future Ventures](https://shizune.co/investors/profile/baruch-future-ventures) — VC Fund, 8 deals together
- [DCVC](https://shizune.co/investors/profile/data-collective) — VC Fund, 8 deals together
- [Energy Impact Partners](https://shizune.co/investors/profile/energy-impact-partners) — VC Fund, 8 deals together

## About Material Impact

VC Fund · Boston, United States

Material Impact establishes companies dedicated to transforming advancements in material science and deep technology into products.

5 contacts available at Material Impact.

| Name | Title | Profile |
| --- | --- | --- |
| Adam Sharkawy | Co-Founder & Managing Partner | https://shizune.co/investors/profile/adam-sharkawy |
| Elyse Winer | Partner | https://shizune.co/investors/profile/elyse-winer |
| Brian Zatulove | Partner | https://shizune.co/investors/profile/brian-zatulove |
| Carmichael Roberts | Founder & Managing Partner | https://shizune.co/investors/profile/carmichael-roberts |
| Christian Theriault | Entrepreneurial Partner | https://shizune.co/investors/profile/christian-theriault |

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## FAQ

### What does Carmichael Roberts invest in?

Carmichael Roberts invests primarily in Energy, Renewable Energy and Manufacturing startups, most often at Series A and Series B stage. Most of the 139 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### When did Carmichael Roberts last invest?

The most recent investment recorded for Carmichael Roberts closed in Jun 2026. Shizune tracks 139 investments in total for this profile, including round sizes, stages and portfolio companies, all sourced from confirmed public funding rounds and refreshed monthly.

### Is Shizune's investor data accurate?

Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Aug 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.

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