Investing in a better future
Leading partner in private equity investment, alternative energy develpment activities, and other bespoke financial investments in Japan
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.
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.
Who We Help
Plastic Recycling
Aquaculture
Wind & Solar
Horticulture
Forestry Consulting
Dairy Farming Tech
Company Information
| 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 |
| Phone | +81-(0)3-3505-2880 |
| Established | May 25, 2000 |
| Business Description | Management Consulting |
| About Us | Neptune Avenue is a private equity and project development firm specializing in real asset investments across renewable energy, sustainable agriculture, and green technology. We bridge the gap between capital and infrastructure by managing the full lifecycle of projects—from research and technical development to construction and operational management. |
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.