Our Mission

Enabling social implementation of fusion power generation through a stable supply of mineral resources.

About MiRESSO

MiRESSO Co.Ltd. is a fusion startup certified by the National Institute of Quantum Science and Technology (QST) in Japan.

Fusion power generation, which is being developed around the world, requires large amounts of beryllium (Be) as a neutron multiplier. However, beryllium is expected to become a bottleneck to the widespread use of fusion power generation because of its overwhelming shortage at current production levels and its high price.

The low-temperature refining technology invented by Masaru Nakamichi and his colleagues at MiRESSO Co.Ltd. has made it possible to refine mineral resources at a revolutionary low cost and energy saving, instead of the expensive high-temperature processing that was previously required. Our mission is the social implementation of fusion power generation near future by providing a stable and low-cost supply of beryllium through this technology.

Fusion reactor Tokamak. Reaction chamber. Fusion power.

Why beryllium is essential for fusion?

Fusion reactions are caused by ultrafast collisions of deuterium and tritium in plasma. However, tritium is rarely found naturally thus it have to be self-generated in the blanket.
This requires beryllium (neutron multiplier), which doubles the number of neutrons to two.

Business Overview

Beryllium production and sales business

We are building our own plant using our low-temperature refining technology and aim to produce and sell beryllium and beryllium compounds starting in 2026.
Beryllium is hard, heat-resistant, and lightweight material, and is currently used in aerospace, medical mirror materials, and electronic devices in addition to fusion.
We expect demand for beryllium to increase in the market for existing applications, because our technology will allow us to offer beryllium at a significantly lower cost than current market prices.

Technology Platform Business

We plan to use our low-temperature refining technology to jointly develop refining for materials other than beryllium and recycling of mineral resources , to consulting, and to license our technologies.
Our technology can be used for materials that require high temperature heat treatment, such as rare earth, lithium, and ceramics.
We also accept requests for feasibility verification, so please feel free to contact us.

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Low-temperature refining technology

Currently, in order to refine beryllium, it is necessary to dissolve the ore at high temperatures in excess of 2,000 degrees Celsius, a refining process that is expensive and emits large amounts of CO2.
Our technology makes it possible to dissolve at a low temperature of 300℃ and under normal pressure by using an alkaline reagents and microwave heating.

Microwave heating is a simple process that is mechanically identical to a microwave oven. This makes it possible to dissolve ores at extremely low cost and energy savings.
Below is a comparison of our low-temperature refining technology and conventional technology regarding CAPEX, OPEX, and CO2 emissions for lithium ore refining.