Neptune Avenue Logo

Investing in a better future

Leading partner in private equity investment, alternative energy develpment activities, and other bespoke financial investments in Japan

Sustainable energy investment illustration

Our Purpose

At Neptune Avenue, we focus on the future. Investing in fields that are important for sustainable development. Our logo is a symbol for our hope to make ripples in our field, adding value in a positive direction. Our efforts in alternative energy development, food waste recycling, and our future plans for onshore fully recycled sea water fish farming - as well as other fields - prove our dedication to our purpose.

Aquaculture & Marine Products

We are committed to the growth and sustainability of the aquaculture industry. Our activities include the construction and management of aquaculture facilities, as well as research and development, technical guidance, and consulting. We offer equipment manufacturing and sales, as well as the manufacturing, freezing, processing, and sales of marine products.

Aquaculture & Marine Products

Alternative Energy

We believe that sustainable energy solutions are a much needed component in every industry. Our services encompass power generations operations and electricity sales using natural energy such as solar, wind, and geothermal energy. We also do research, development and technology provision, as well as the construction, sales, management, and operation of solar power plants, power generation equipment and systems.

Alternative Energy

Who We Help

Food Waste Recycling

Food Waste Recycling

Aquaculture

Aquaculture

Wind & Solar

Wind & Solar

Horticulture

Horticulture

Forestry Consulting

Forestry Consulting

Dairy Farming Tech

Dairy Farming Tech

Company Info

Company Name Neptune Avenue K.K.
Address Daiwa Azabudai Bldg, 8F, 2-3-3 Azabudai
City Minato-ku
State/Prefecture Tokyo
Postal Code 106-0045
Country Japan
Phone +81-(0)3-3505-2880
Fax +81-(0)3-3505-2881
Established May 25, 2000
Capital JPY 90,000,000
Affiliated Banks Sumitomo Mitsui Financial Group
Parent Company Fusion Holdings
Representative Director Kenneth Siegel
License Number 13-ユ-04331
Place of Incorporation Tokyo, Japan
Business Description Executive Search and Management Recruitment Consultancy

Building Resilience Through Real Assets

The future is powered by sustainable energy and secured by smart agriculture. Whether you are looking to deploy capital or scale a project, we bring the expertise to bridge the gap between bold ideas and grounded results. Let's build it together.