Keyframe Capital Partners
VC Fund
New York, United States
Keyframe Capital Partners is an investment firm that invests across a diverse range of business models and capital structures. It seeks to build long-term partnerships with management teams and to leverage its flexibility to help solve their most complex asset and corporate financing requirements.
- Total investments:
- 40
- Last investment:
- Lead investor:
- 48%
Last updated:
For AI agents: llms.txt
Industries Keyframe Capital Partners invests in
SoftwareEnergyEnergy EfficiencyArtificial IntelligenceGreenTech
Stages Keyframe Capital Partners invests in
Series BSeries AVenture - Series UnknownSeries CSeries D
Countries Keyframe Capital Partners invests in
United StatesCanadaIsraelUnited Kingdom
Contacts
| Name | Phone | Socials | |
|---|---|---|---|
Alex Brown
|
|||
John Rapaport
|
|||
3 more contacts available
Investment Focus
Industry
- Software 8 (20%)
- Energy 5 (13%)
- Energy Efficiency 5 (13%)
- Artificial Intelligence 4 (10%)
- GreenTech 3 (8%)
Stage
- Series B 9 (23%)
- Series A 5 (13%)
- Venture - Series Unknown 5 (13%)
- Series C 3 (8%)
- Series D 3 (8%)
Country
- United States 16 (40%)
- Canada 1 (3%)
- Israel 1 (3%)
- United Kingdom 1 (3%)
Team
| Name | Title | Investments | Links | |
|---|---|---|---|---|
|
Alex Brown
partner
|
partner | Total investments: 2 | Find email | |
|
John Rapaport
Chief Investment Officer
|
Chief Investment Officer | Total investments: 0 | Find email |
Investments
| Company | Description | Round | Links |
|---|---|---|---|
Utilidata
|
Utilidata is a grid technology startup that integrates AI capabilities to enhance data utilization and operational efficiency. | $40M / Series C / May 28, 2026 | |
PassiveLogic
|
PassiveLogic’s mission is to empower people through generative autonomy to solve the world’s largest climate challenges. Buildings are the most complex controlled infrastructure in the world, however, they are often fitted with technologically stagnant and expensive control systems that waste energy and provide sub-optimal occupant comfort. Theconsequence of this inefficiency is that buildings account for more than 40% of the entire world's energy usage. Autonomous buildings are the key to addressing this energy challenge and unlocking the future of cities. PassiveLogic’s autonomous building platform, powered by Quantum - the physics-based digital twin standard for autonomous systems, has proven 30% energy savings compared to conventional control systems. Applying this scalable technology across the entire U.S. building sector alone creates a net savings opportunity of 9.6 Quads per year—the equivalent of taking 1/3 of all U.S. vehicles off the road.PassiveLogic’s team is committed to developing extraordinary products that tackle the most challenging sustainability issues. | $74M / Series C / Sep 16, 2025 | |
|
Utilidata
|
Utilidata is a grid technology startup that integrates AI capabilities to enhance data utilization and operational efficiency. | $60.3M / Series C / Apr 29, 2025 | |
David Energy
|
David Energy is an energy company that leverages advanced technology to transform the way electricity is consumed, managed, and traded. By integrating software and hardware solutions, David Energy aims to optimize energy usage, reduce costs, and increase the adoption of renewable energy sources. By focusing on smart energy management, renewableenergy integration, and market participation, David Energy is helping to shape a more sustainable and efficient energy future. | $23M / Series A / May 14, 2024 | |
Infogrid
|
Infogrid is an AI technology company that automates facilities management and makes any building smart. Combining IoT sensors with AI, Infogrid optimizes and automates building management, saving time, money, and the environment, whilst improving safety.Sensors are small, unobtrusive, and low-cost. Implementation takes minutes. Data istransformed (using proprietary algorithms and machine learning) into actionable energy and cost-saving insights and easily integrates into existing systems. With Infogrid’s end-to-end system, it has never been easier to deliver a truly smart building. | $13M / Series B / Apr 22, 2024 | |
Sealed
|
Sealed is the easiest, most affordable way to make your house more comfortable and efficient. In partnership with energy utilities and certified contractors, we solve the problems that make houses too hot, too cold, and too wasteful.Upgrades like HVAC, insulation, air sealing, and smart home technology keep your house working and feeling great inany weather. We coordinate projects from beginning to end, and we stand behind our work. If we don’t reduce your home’s energy use, we don’t get paid.Mission:Sealed is on a mission to unlock comfort, value, and efficiency hidden in peoples' homes. We offer smart home retrofits and turnkey project management to make upgrading your house a snap. Through our innovative performance payment program, we cover the upfront costs of the installations. Homeowners then pay Sealed using the energy they save. We believe in standing behind our work: if Sealed customers don't save energy, we don't get paid.Over 50% of single-family homeowners have significant comfort or other problems (health, safety, etc.) that could be solved with energy-saving upgrades (insulation, new boiler, smart thermostat, etc.). Most homeowners would prefer to pay for these upgrades with their energy savings rather than pay cash or take out a loan. But historically, banks have not been willing to lend money based on residential energy savings unless they feel confident in the underlying analytics.Sealed’s HomeAdvance financing program provides capital to cover the upfront costs of energy-saving upgrades. After the upgrades are installed, customers pay Sealed based on the amount of energy they save, guaranteed. Sealed’s proprietary data, analytics, and software enable investment-grade energy savings predictions. Sealed’s IP has enabled the first debt facility backed by residential energy savings cashflows (New York Green Bank) and the first residential energy savings insurance policy (Munich Re).Sealed reaches customers via local dealers (contractors), utilities, and digital marketing. Sealed recruits, trains, and manages dealers, helping them sell more projects with the Sealed HomeAdvance program. Sealed also works with utilities (National Grid, Con Edison, etc.) that market Sealed’s services in exchange for fixed and lead generation fees. | $30M / Mar 15, 2024 | |
|
Sealed
|
Sealed is the easiest, most affordable way to make your house more comfortable and efficient. In partnership with energy utilities and certified contractors, we solve the problems that make houses too hot, too cold, and too wasteful.Upgrades like HVAC, insulation, air sealing, and smart home technology keep your house working and feeling great inany weather. We coordinate projects from beginning to end, and we stand behind our work. If we don’t reduce your home’s energy use, we don’t get paid.Mission:Sealed is on a mission to unlock comfort, value, and efficiency hidden in peoples' homes. We offer smart home retrofits and turnkey project management to make upgrading your house a snap. Through our innovative performance payment program, we cover the upfront costs of the installations. Homeowners then pay Sealed using the energy they save. We believe in standing behind our work: if Sealed customers don't save energy, we don't get paid.Over 50% of single-family homeowners have significant comfort or other problems (health, safety, etc.) that could be solved with energy-saving upgrades (insulation, new boiler, smart thermostat, etc.). Most homeowners would prefer to pay for these upgrades with their energy savings rather than pay cash or take out a loan. But historically, banks have not been willing to lend money based on residential energy savings unless they feel confident in the underlying analytics.Sealed’s HomeAdvance financing program provides capital to cover the upfront costs of energy-saving upgrades. After the upgrades are installed, customers pay Sealed based on the amount of energy they save, guaranteed. Sealed’s proprietary data, analytics, and software enable investment-grade energy savings predictions. Sealed’s IP has enabled the first debt facility backed by residential energy savings cashflows (New York Green Bank) and the first residential energy savings insurance policy (Munich Re).Sealed reaches customers via local dealers (contractors), utilities, and digital marketing. Sealed recruits, trains, and manages dealers, helping them sell more projects with the Sealed HomeAdvance program. Sealed also works with utilities (National Grid, Con Edison, etc.) that market Sealed’s services in exchange for fixed and lead generation fees. | $30M / Series B / Mar 15, 2024 | |
Element Energy
|
Element Energy, a startup with technology that significantly improves the performance, lifetime, reliability and cost of large battery packs used in a wide range of applications including stationary and renewable energy storage and hybrid and electric vehicles. | $73M / Series B / Nov 14, 2023 | |
|
Element Energy
|
Element Energy, a startup with technology that significantly improves the performance, lifetime, reliability and cost of large battery packs used in a wide range of applications including stationary and renewable energy storage and hybrid and electric vehicles. | $73M / Series B / Nov 14, 2023 | |
|
Element Energy
|
Element Energy, a startup with technology that significantly improves the performance, lifetime, reliability and cost of large battery packs used in a wide range of applications including stationary and renewable energy storage and hybrid and electric vehicles. | $38M / Debt Financing / Nov 14, 2023 | |
| See all 40 investments → | |||
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FAQ
What does Keyframe Capital Partners invest in?
Keyframe Capital Partners invests primarily in Software, Energy and Energy Efficiency startups, most often at Series B and Series A stage. Most of the 40 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.
How do I contact Keyframe Capital Partners?
Public channels for Keyframe Capital Partners include LinkedIn 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 Keyframe Capital Partners?
The team at Keyframe Capital Partners includes Alex Brown (partner) and John Rapaport (Chief Investment Officer). 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 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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