Top 5 Renewable Energy Angel Investors in Asia in May 2025

Last updated: May 2025 A list of 5 angel investors that invest in Renewable energy startups based in Asia. We rank investors based on the number of investments they made in Renewable energy companies from Asia. We update this investor list every month.

Top 5 Renewable Energy Angel Investors in Asia in May 2025

Investor	Renewable Energy Asia investments
Michael Diekmann	1
Cheng Tao	1
T. Chen Fong	1
Liu Xiaosong	1
Steve Melhuish	1

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Investor list

Michael Diekmann is Supervisory Board Member at Siemens.

Investment focus

mHealth, CleanTech, Smart Home
Series A, Series C
China, United Kingdom

Portfolio highlights

BERGLUF — BERGLUF develops and sells air purification system products.
Huma — Huma is a global health technology company that provides a modular platform to support digital 'hospitals at home' across different disease areas. Its platform combines predictive algorithms, digital biomarkers, and real-world data to advance proactive, predictive care and research.The company was founded in 2011 and is headquartered inLondon, England.

Tao Cheng currently works as Chief Executive Officer and Founder of popIn.

Investment focus

Telecommunications, Content, Internet
Seed, Angel, Series A
Japan

Portfolio highlights

Tokyo — Tokyo provides consistently-designed signage and projector installation, as well as maintenance company support. All customers need is “product selection” considering installation. This is a service that does not take time and effort!
Aidemy — Aidemy is a web service where you can learn AI programming online.
Girasol Energy — Girasol Energy is an IoT Platform provides innovative PLC technologies that enable wiser PV Plants.

Dr. Fong is a Professor Emeritus at the Faculty of Medicine, University of Calgary. He was formerly the Head of the Department of Radiology at the University of Calgary and the Calgary Health Region. Dr. Fong is active in funding and nurturing start-up companies. Over the past two decades, he funded over 50 companies in diverse technology sectors,with an emphasis in medical devices. Dr. Fong is the co-founder and board member of Calgary Scientific Inc. and is also on the board of Clarius Mobile Health, Cohesic Inc. and Innovere Medical. In addition to seed investing, Dr. Fong is active in the Calgary community sitting on six charitable boards and foundations.In 2015, Dr. Fong joined the Creative Destruction Lab (CDL) at the University of Toronto business school as a mentor. CDL helps young entrepreneurs to shape or pivot their nascent ideas. He is widely credited with launching CDL at the Haskayne School of Business at the University of Calgary, bringing together seasoned business leaders from Alberta, Canada and the US to grow budding companies. Dr. Fong is on the Strategic Advisory Board of CDL and a Fellow of CDL in Toronto, Montreal, Calgary and Vancouver. In 2017, Dr. Fong was named to the Order of Canada for his contribution to medical technology innovation and philanthropy.

Investment focus

Software, Artificial Intelligence, Biotechnology
Seed, Angel, Pre-Seed
Canada, Singapore, United States

Portfolio highlights

Oncoustics AI — Oncoustics is creating and deploying advanced AI solutions for low cost, non-invasive surveillance, diagnostics, and treatment monitoring of diseases with high unmet clinical need. Unlike other players in the space, Oncoustics does not do image recognition. Instead, Oncoustics applies AI to raw ultrasound signals from readily available handheldultrasound devices to rapidly differentiate healthy versus diseased tissues. There's a wealth of information in these raw signals and this approach reveals novel biomarkers that can be aligned with existing standards and categorization systems. Initially targeting liver disease, a $30B global diagnostic market, Oncoustics has filed a Breakthrough Device Designation Request with the FDA for the OnX that detects liver fibrosis and the 510K is underway. Several follow-on liver products are in development. Oncoustics also has clinical data on other organ indications including prostate, kidney, breast and thyroid diseases and cancers.
SunGreenH2 — SunGreenH2 creates the world's highest performance advanced materials for electrolysis i.e. green hydrogen production. Achieve high efficiency, low cost green H2 production on site for your application in the Power-to-X, Hydrogen refuelling, Energy Storage and Buildings sectors. Revolutionising zero emissions and improving profitability.
EZee Assist — EZee Assist provides instant answers to franchisee operational questions. Continue using preferred channels of support and start receiving instant answers.

Liu Xiaosong

Investment focus

Robotics, Manufacturing, Semiconductor
Angel, Series B
China, Singapore

Portfolio highlights

Yizhun Intelligent — Yizhun Intelligent is an AI & Robotics company.
Quantified Energy Labs — Leaders in on-site PV module quality evaluation

Steve Melhuish is the Founder of Rumah, Co-Founder and Board Director at PropertyGuru Group, Founder and CEO at Planet Rise, Founding Partner at Wavemaker Impact, and an Advisor and Investor at Eco-Business and Ampd Energy. He attended the University of Plymouth and the University of Reading.