About MCJ
MCJ is a venture capital firm founded in 2019. It is primarily based out of Boston, United States. As of Sep 2026, MCJ is an active investor, having invested in 39 companies, with 8 new investments in the last 12 months. It primarily invests in Series A round in United States based startups. Its investments are spread across a wide range of sectors from Environment Tech to High Tech and Enterprise Applications. Most recently it participated in the $***** Series A round of Light Overall, MCJ portfolio has seen 2 unicorns, namely Crusoe and Arcadia. A lot of funds co-invest with MCJ, with names like Lowercarbon Capital sharing a substantial percentage of its portfolio. MCJ has team of 12 people including 7 partners.Key Metrics
Team Members
Portfolio Sectors
Portfolio Locations
Rounds of Entry
Series A, Seed & 4 more
Deals in last 12 months
MCJ's List of Top Investments
MCJ has a portfolio of 39 companies, including 2 unicorns. Their most notable investments are in Living Carbon and Clarasight.Their portfolio spans across United States, Canada, United Kingdom and 3 more locations. They have invested in Environment Tech, High Tech, Enterprise Applications and 15 other sectors, across stages such as Series A, Seed and 4 more. Here is the list of top investments by MCJ:
1. Sense
Smart energy platform providing real-time electricity usage insights for homes and utilities. It uses smart sensors and data analytics to deliver real-time electricity usage insights for homes, utilities, and energy partners. It helps users understand and reduce energy consumption, improve efficiency, and support grid reliability by providing high-resolution monitoring and behavioral energy insights aimed at lowering carbon emissions and accelerating the energy transition.
Key facts about Sense
- Founded Year: 2013
- Location: Cambridge (United States)
- Valuation: $*****
- Stage: Series D
- Total Funding till date: $177M
- Employee Count: 107 as on Sep 30, 2026
- Investors: Capricorn, Energy Impact Partners and 21 Others
- Latest Funding Round: Series D, Jan 27, 2026, $*****
- Highlight: Editors' Pick
2. Crusoe
Operator of cloud platform providing infrastructure for artificial intelligence workloads. The company designs, builds, and operates infrastructure to power artificial intelligence. It offers managed inference, cluster management, and observability. The platform features high-performance compute, accelerated storage, and optimized networking. It provides support for open and open-source models. The company focuses on environmentally aligned power sources.
Key facts about Crusoe
- Founded Year: 2018
- Location: Denver (United States)
- Valuation: $*****
- Stage: Series F
- Total Funding till date: $6.67B
- Employee Count: 1,715 as on Aug 31, 2026
- Investors: Goldman Sachs, Fidelity Investments and 77 Others
- Latest Funding Round: Series F, Aug 31, 2026, $*****
- Highlight: Editors' Pick
3. Arcadia
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Key facts about Arcadia
- Founded Year: 2014
- Location: Washington, DC (United States)
- Valuation: $*****
- Stage: Series D
- Total Funding till date: $566M
- Employee Count: 1,476 as on Aug 31, 2026
- Investors: ValueAct Capital, Salesforce Ventures and 42 Others
- Latest Funding Round: Conventional Debt, Apr 11, 2024, $*****
- Highlight: Editors' Pick
4. Twelve
Developer of carbon transformation technology producing fuels and feedstock products. The company's technology transforms carbon dioxide, water, and renewable electricity into hydrocarbons. These hydrocarbons are drop-in replacements for conventional petroleum-based materials and ingredients. The resulting products have zero fossil fuels, zero emissions, and no trade-offs in quality.
Key facts about Twelve
- Founded Year: 2015
- Location: Berkeley (United States)
- Valuation: $*****
- Stage: Series C
- Total Funding till date: $472M
- Employee Count: 262 as on Aug 31, 2026
- Investors: Capricorn, Rising Tide Fund and 56 Others
- Latest Funding Round: Series C, May 06, 2025, $*****
- Highlight: Editors' Pick
Provider of end-to-end platform for distributed renewable energy finance. It accelerates capital deployment for renewable energy projects. The platform offers tools for portfolio management, supply chain credit, asset analytics, and results-based finance. It serves financiers, renewable energy companies, and equipment suppliers, streamlining project development and improving access to capital. The platform facilitates various aspects of project lifecycle, from initial financing to operational monitoring. It provides solutions to overcome bottlenecks in distributed renewable energy project development.
Key facts about Odyssey Energy Solutions
- Founded Year: 2017
- Location: Boulder (United States)
- Stage: Series B
- Total Funding till date: $65.8M
- Employee Count: 54 as on Sep 30, 2026
- Investors: Union Square Ventures, Founder Collective and 19 Others
- Latest Funding Round: Series B, Sep 01, 2026, $*****
- Highlight: Editors' Pick
MCJ's Year-on-Year Investment Trends
MCJ has invested in 39 companies over the last 5 years, with an average of 6 new investments annually in the last 5 years. In 2025, it made 8 investments, while as of Sep 2026, it has made 6 investments in this year. Its most recent first time investment was in Light and most recent follow-on round was in Reservoir.Year | No. of Investments | ||
|---|---|---|---|
1st Round | Follow-on | Total | |
2026 (YTD) | 5 | 1 | 6 |
2025 | 7 | 1 | 8 |
2024 | 6 | 0 | 6 |
2023 | 1 | 0 | 1 |
2022 | 7 | 1 | 8 |
2021 | 5 | 0 | 5 |
MCJ's Investments by Stage
MCJ has made 13 investments in Series A stage with an average round size of $26.5M, 11 investments in Seed stage with an average round size of $7.72M and 3 investments in Series B stage with an average round size of $27.2M.Stage of entry | No. of Investments |
|---|---|
Series A | 13 |
Seed | 11 |
Series B | 3 |
Series C | 2 |
Post IPO | 1 |
Others | 1 |
Note: We have considered here, only first round of investments
MCJ's Investments by Sector
MCJ has a diverse portfolio, with companies operating in the Sustainability Tech, Environment Tech, High Tech, Energy Tech and Enterprise Applications. Notably, it has invested in 34 Tech companies, 30 Enterprise (B2B) companies, 18 Software companies and at least 11 companies focusing on Tech hardware.Sector | No. of Investments |
|---|---|
Sustainability Tech | 20 |
Environment Tech | 18 |
High Tech | 16 |
Energy Tech | 14 |
Enterprise Applications | 11 |
Others | 36 |
Note: We have considered here, only first round of investments
MCJ's Investments by Geography
MCJ has made most investments in United States (25), followed by Canada where it has made 2 investments.Country | No. of Investments |
|---|---|
United States | 25 |
Canada | 2 |
India | 1 |
Netherlands | 1 |
Switzerland | 1 |
Others | 1 |
Note: We have considered here, only first round of investments
MCJ's recent investments
MCJ has made 6 investments in 2026 so far. Light and Odyssey Energy Solutions are the latest among them.Here are the most recent investments by MCJ:
Filter this listDate | Company | Location | Round Details | Round Amount | Co-Investors |
|---|---|---|---|---|---|
Sep 01, 2026 | United States | Series A | 6742 | [+5] | |
Sep 01, 2026 | United States | Series B | 7005 | [+8] | |
Aug 13, 2026 | United States | Seed | 5476 | [+1] | |
Jun 04, 2026 | United States | Seed | 7153 | [+2] | |
Feb 19, 2026 | Switzerland | Series B | 6059 | [+7] |
Unicorns in MCJ's Portfolio
MCJ has 2 unicorns in its portfolio - Arcadia and Crusoe. The most recent unicorn in their portfolio is Arcadia. It became a unicorn in 2022.Here is a list of unicorns in MCJ's portfolio:
Tracxn Score | Company | Short Description | Founded year | Sector | Location | Company Stage | First Investment/ Acquisition Details |
|---|---|---|---|---|---|---|---|
67 | Provider of clean energy data platform and solutions for businesses. It offers end-to-end energy management solutions, streamlining data and processes for enterprises and energy innovators. Services include utility bill management, energy procurement advisory, and sustainability reporting. The platform supports various use cases for energy service providers, such as optimizing solar and storage solutions, EV charging, energy management, and property management. It helps clients lower utility costs, achieve sustainability goals, and improve energy efficiency. | 2014 | Washington, DC | Series D | dpp{skr | ||
69 | Operator of cloud platform providing infrastructure for artificial intelligence workloads | 2018 | Denver | Series F | i{fefxw |
Team profile of MCJ
MCJ has a team of 12 members including 7 Partners and 2 Principals located in United States and United Kingdom. MCJ's team does not sit on the board of any company as of now.Here is a list of top team members in MCJ:
Name | Designation | Location | Board Memberships | Contact Details |
|---|---|---|---|---|
Partner | Boston | - | ||
Partner | San Francisco | - | - | |
Partner | - | - | ||
Partner | - | - | ||
Partner | - | - | ||
Partner | - | - | - | |
Partner | Boston | - | - | |
Principal | - | - | - | |
Principal | - | - | - |
Co-investors of MCJ
Over the past 5 years, 380 investors have co-invested in MCJ's portfolio companies. This includes funds and angels.
- Invested before MCJ: Climate Capital, MCJ Collective and 105 others have invested in rounds before MCJ. There are 6 companies where Climate Capital has invested before MCJ and 3 companies where MCJ Collective has invested before MCJ.
- Top Co-investors of MCJ: 178 investors entered a company along with MCJ. These include investors like Lowercarbon Capital (5 companies).
- Invested after MCJ: A total of 95 investors have invested in MCJ's portfolio after their investments. Top Investors include Lowercarbon (3 companies), Liberty Mutual Investments (2 companies) and Climate Capital (2 companies).
Recent News related to MCJ
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Reservoir Raises $8M in Seed FundingFinSMEs•Aug 13, 2026•Reservoir, MCJ, ACP Partners, Founder Collective
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DG Matrix Closes $60 Million Series A to Scale Next-Generation Power Infrastructure for AI and Electrificationintelligence360•Mar 11, 2026•ABB, MCJ, Engine Ventures, Sabanc Climate Tech and 4 others
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Archimetis Raises $11.5M to Transform Industrial Operations with AI-Powered Operational Reasoning SystemAccess Newswire•Feb 12, 2026•MCJ, Borusan Ventures, Inspired Capital, Incite and 2 others
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Overstory Secures $43M Series B for AI Wildfire Prevention and Grid ResiliencePR Newswire•Nov 25, 2025•Blume Equity, Overstory Tech, PG&E, Energy Impact Partners and 10 others
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Hammerhead AI Secures $10M Seed Funding to Address AI Energy CrisisSiliconAngle•Nov 18, 2025•SE Ventures, Buoyant Ventures, MCJ, WovenEarth and 2 others
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Aalo Atomics raises $100M Series B for modular reactors, plans data center next doorTechCrunch+•Aug 19, 2025•Aalo Atomics, Valor Equity Partners, Hitachi Brand, Perpetual and 16 others
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LGND Secures $9M to Revolutionize Earth Data Accessibility with AI-Powered Geospatial ToolsPR Newswire•Jul 10, 2025•Javelin Venture Partners, AENU, Space Capital, Overture and 5 others
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Rhizome Secures $6.5M Seed Funding to Enhance Climate Resilience Planning Platform for Power GridsPulse 2.0•May 31, 2025•Rhizome, Base10 Partners, MCJ, CLAI Ventures and 5 others
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Nuclear Startup The Nuclear Company Secures $46.3M in Series A FundingTechCrunch+•May 16, 2025•Nano Nuclear, CIV, Goldcrest, MCJ and 3 others
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Exowatt Closes $70 Million Series A FundingMercom Capital•Apr 25, 2025•Exowatt, Felicis Ventures, HSBC, Andreessen Horowitz and 8 others
