Rahul Meka

Principal @ Playground Global

📍 United States🔄 Updated September 2026💼 11 investments📅 9 years investing🗓 Last invested Oct 2025
VC🌍 United StatesInvested this year
11
Total investments
2
Early stage
1
Mid stage
4
Late stage
9y
Years active

Portfolio

10 investments · sorted by recency
All investments
Early stage
Mid stage
Late stage
Board Observer
Oct 2025
Alva Energy is on a mission to lead the fastest, most affordable nuclear power deployment in history. As the first independent nuclear project management and delivery organization, were transforming how nuclear projects are executed, bringing unprecedented speed and efficiency to nuclear energy deployment.
Board Observer
Jan 2025
Next-generation high-voltage, high-density vertical GaN power transistors to enable the next era of compute.
Board Observer
Dec 2024
Sizable Energy addresses the critical need for secure, affordable, and sustainable energy storage. Sizable Energy patented technology and straightforward design extends pumped hydro deployment to any offshore location with a depth of at least a few hundred meters. By leveraging a novel, modular, and easily deployable method, we utilize the gravitational potential of a solution 20% heavier than seawater, like saturated sea salt brine, within seawater.
Board Observer
Jul 2024
Ideon Technologies Inc. is a spin-off from TRIUMF (Canada’s national particle accelerator laboratory) and a world pioneer in the application of cosmic-ray muon tomography. Ideon has developed a discovery platform that integrates proprietary detectors, imaging systems, inversion technologies, and artificial intelligence to provide x-ray-like visibility up to 1 km beneath the Earth’s surface. By detecting sub-surface muons and transforming the data into reliable geophysical surveys and 3D density maps, Ideon helps exploration geologists identify new mineral and metal deposits with precision and confidence. They drill less and discover more with Ideon – reducing cost and risk, saving time, and minimizing environmental impact. Ideon is also expanding the application of muon tomography to use-cases in oil and gas, critical infrastructure and national security.
late stageMining
Board Observer
Jun 2024
Using synthetic biology, GigaCrop is improving photosynthesis.
Board Observer
May 2024
A network for entrepreneurs building in stealth. Submit your information here so investors can find you: harmonic.ai/get-discovered
Board Observer
Jan 2024
Ayar Labs is transforming AI infrastructure by accelerating data movement. Recognizing that the complexity and size of AI models are increasing at a rate that traditional interconnect technology cannot handle, the company has developed the industry’s first co-packaged optics (CPO) solution that enables customers to maximize the compute efficiency and performance of growing AI infrastructure, while reducing costs, latency and power consumption. Based on open standards and optimized for both AI training and inference, Ayar Labs’ optical I/O solution is backed by a robust ecosystem that enables it to integrate smoothly into AI systems at scale.
Board Observer
Jan 2024
Element Zero has developed a novel approach to cost-effectively and efficiently produce iron, silicon, and other future-facing metals with zero carbon emissions utilising renewable energy. Element Zero has created a mineral processing platform that utilises renewable energy to convert iron ore to iron, silica to silicon and other future facing metal ore into metal. This non-aqueous electrochemical process allows Element Zero to process the full spectrum of ores. The technology has been tested successfully on iron ore, nickel, tin, titanium and silica to silicon metal. The low temperature allows Element Zero to run this process on intermittent renewables such as wind, solar, and hydropower, while using 30-40% less energy than the current dominant coal and gas based processes and produces a superior purity product.
early stageMining
Venture Investor
Mar 2023
Playground Global is an early-stage deep tech venture capital firm investing in technical founders to transform ambitious ideas into high-impact businesses. We help build companies at the earliest stages, leveraging our engineering expertise and commitment to founders taking scientific and technological risks. Founded in 2015 and headquartered in Palo Alto, CA, Playground invests in areas like next-generation computing, automation, energy transition, and engineered biology. Our portfolio includes pioneering companies such as PsiQuantum, MosaicML (acq. by Databricks), d-Matrix, Agility Robotics, Ultima Genomics, and Strand Therapeutics. Learn more at www.playground.vc
Board Observer
Mar 2023
Industrial humanoids hard at work.
Experience · 12 entries
All (12)
Investments (11)
Board (9)
2025
Board Observer
Oct 2025
Alva Energy is on a mission to lead the fastest, most affordable nuclear power deployment in history. As the first independent nuclear project management and delivery organization, were transforming how nuclear projects are executed, bringing unprecedented speed and efficiency to nuclear energy deployment.
Board Observer
Jan 2025
Next-generation high-voltage, high-density vertical GaN power transistors to enable the next era of compute.
2024
Board Observer
Dec 2024
Sizable Energy addresses the critical need for secure, affordable, and sustainable energy storage. Sizable Energy patented technology and straightforward design extends pumped hydro deployment to any offshore location with a depth of at least a few hundred meters. By leveraging a novel, modular, and easily deployable method, we utilize the gravitational potential of a solution 20% heavier than seawater, like saturated sea salt brine, within seawater.
Board Observer
Jul 2024
Ideon Technologies Inc. is a spin-off from TRIUMF (Canada’s national particle accelerator laboratory) and a world pioneer in the application of cosmic-ray muon tomography. Ideon has developed a discovery platform that integrates proprietary detectors, imaging systems, inversion technologies, and artificial intelligence to provide x-ray-like visibility up to 1 km beneath the Earth’s surface. By detecting sub-surface muons and transforming the data into reliable geophysical surveys and 3D density maps, Ideon helps exploration geologists identify new mineral and metal deposits with precision and confidence. They drill less and discover more with Ideon – reducing cost and risk, saving time, and minimizing environmental impact. Ideon is also expanding the application of muon tomography to use-cases in oil and gas, critical infrastructure and national security.
late stageMining
Board Observer
Jun 2024
Using synthetic biology, GigaCrop is improving photosynthesis.
Show all 12 entries ↓
Investment activity
2017–2025 · 11 investments
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