MCJ
VC Fund
Kasukabe, Japan
MCJ is a VC fund in Kasukabe focused on Renewable Energy and Energy. MCJ backs extraordinary founders driving the transition of energy and industry and tackling the inevitable impacts of climate change. We discover and invest in startups rewriting industries to be cleaner, more profitable and more resilient. We strengthen our investments through the MCJ Collective — a vetted member network that connects talentedtech and industrial leaders with our portfolio and with one another. Our media platform including the Inevitable podcast spotlights key perspectives critical to our portfolio and the transition at large, reaching tens of thousands of professionals multiple times per week. Learn more at mcj.vc
- Total investments:
- 100
- Last investment:
- Lead investor:
- 0%
- Fund size:
- $68M
- Last fund:
Last updated:
For AI agents: llms.txt
Industries MCJ invests in
Stages MCJ invests in
Countries MCJ invests in
Round sizes
Contacts
| Name | Phone | Socials | |
|---|---|---|---|
Round size
- Seed
- $3.7M–$11M
- Series A
- $11M–$40M
- Series B
- $24M–$150M
Investment Focus
Industry
- Renewable Energy 20 (20%)
- Energy 18 (18%)
- Software 14 (14%)
- Sustainability 13 (13%)
- Artificial Intelligence 11 (11%)
Stage
- Seed 43 (43%)
- Series A 31 (31%)
- Series B 10 (10%)
- Pre-Seed 5 (5%)
- Series C 3 (3%)
Country
- United States 66 (66%)
- United Kingdom 3 (3%)
- Kenya 1 (1%)
- Canada 1 (1%)
- Norway 1 (1%)
Team
| Name | Title | Investments | Links | |
|---|---|---|---|---|
Jason Jacobs
Partner
|
Partner | Total investments: 2 | Find email |
Investments
| Company | Description | Round | Links |
|---|---|---|---|
| Light is a platform that offers embedded and branded electricity plans for the customers of power brands. | $46M / Series A / Sep 01, 2026 | ||
| Odyssey is at the center of one of the biggest economic and climate opportunities of our lifetime: the clean energy transition in emerging markets, where aging/weak grids, favorable policies, and high diesel costs are making distributed renewable energy systems THE energy infrastructure of the future. Odyssey provides financiers and renewableenergy project developers with leading-edge technologies and a data-driven software platform to aggregate and scale investment in distributed renewable energy. (DRE)Odyssey is the only end-to-end platform to scale project development across all phases: planning, financing, procuring, and operating projects. Our solutions solve the key challenges facing the distributed renewable energy industry in emerging markets:Planning + Finance Solutions: Financiers lack the information to navigate the investment landscape in many countries that most need their support. By leveraging our network of 2000+ renewable energy companies, we are helping private and concessional financiers access projects that were previously inaccessible. We have $1.3 billion of financing for distributed renewable energy projects on the platform and a pipeline of more than US$785 million in active discussions with concessional and commercial financiers. We also offer advanced software tools to efficiently plan projects, aggregate portfolios and streamline diligence between developers and investors.Procurement Solutions: Smaller renewable energy companies can’t access economies of scale pricing and terms when buying equipment. By aggregating their orders and connecting them with financing that would otherwise be out of reach, we help developers access equipment more quickly, reliably, and at better prices.Monitoring & Control Solutions: As renewable energy companies scale their operations, ensuring they are performing reliably and optimally is a challenge. We offer hardware and software to make it easy to spot any issues, remotely control components, as well as provide data back to investors about portfolio performance in the form of customized dashboards for commercial, financial, operational, and impact metrics. | $27M / Venture - Series Unknown / Sep 01, 2026 | ||
| Reservoir provides smart heat pump water heaters with connected energy management and thermal storage. | $8.1M / Seed / Aug 12, 2026 | ||
| Red Metals is a next-generation copper manufacturing startup building America's first domestic high-conductivity copper rod production facility in Charleston, South Carolina. | $10M / Seed / Jun 04, 2026 | ||
| Recheck is the clean business platform for the solar industry. | $2M / Pre-Seed / May 19, 2026 | ||
| Moment is a start-up striving to provide greater access to renewable and reliable energy storage. We create battery units that can be used in a variety of applications. Moment is currently focused on storing energy for off-grid, end of grid customers, and plans on powering remote communities in the future. | $40M / Series B / May 05, 2026 | ||
| DG Matrix innovative solutions unlock gigaton-scale emissions reductions by enabling electrification anywhere and everywhere with less material and a smaller footprint. | $60M / Series A / Feb 18, 2026 | ||
| Archimetis provides an AI-powered operational reasoning system for complex industrial facilities. The platform applies industrial AI and agent-based reasoning to help energy, chemical, pharma, and refinery operators predict failures and optimize processes in real time. Archimetis analyzes plant data from planning to execution to support faster,higher-confidence operational decisions. The system is designed for refineries and process manufacturing environments seeking to reduce downtime and improve throughput. Archimetis also offers demos and implementation support for refinery and process manufacturing teams. | $11.5M / Venture - Series Unknown / Feb 11, 2026 | ||
| Unlimited Industries transforms how critical infrastructure is engineered and delivered, accelerating a future of abundance with AI-powered. | $12M / Seed / Dec 03, 2025 | ||
| Overstory combines AI and advanced satellite imagery to help electric utilities pinpoint and prioritize vegetation risks before they materialize. With Overstory's vegetation intelligence, transmission and distribution operators can make smarter decisions about the vegetation around their power corridors, optimizing resources and improvingoperational efficiency. This helps prevent outages, reduce wildfire risks, and accelerate the transition to a safer, more resilient grid. | $43M / Series B / Nov 25, 2025 | ||
| See all 100 investments → | |||
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FAQ
What does MCJ invest in?
MCJ invests primarily in Renewable Energy, Energy and Software startups, most often at Seed and Series A stage. Most of the 100 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.
What is MCJ's check size?
MCJ typically joins rounds of $3.7M–$11M at Seed, $11M–$40M at Series A and $24M–$150M at Series B. These ranges are 10th–90th percentile round sizes calculated from confirmed public funding rounds, so they are a realistic guide to the rounds MCJ participates in.
How do I contact MCJ?
Public channels for MCJ include LinkedIn, X (Twitter) and the website linked on this profile. For a verified work email and phone number, create a free Shizune account — contact data is searched across 20+ sources and validated before delivery, so your outreach lands in the right inbox.
Who are the partners at MCJ?
The team at MCJ includes Jason Jacobs (Partner). The Team section lists each member with their title, investment count and links.
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 Oct 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.
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