Two solar cold storage sites run in Sandiara, day and night, with no grid and no generator. TUMIQUI JAPON SASU built them and operates them. The same configurations are offered for construction, in Senegal and in neighbouring countries, on the client’s land.
Two types of site
Solar cold storage container, 40 ft (Site A type)
Keep the harvest cool, at the market or in the growing area.
| Component | Content |
|---|---|
| Container | One insulated 40-foot container |
| Solar | 21 kWp |
| Cold room | 22 m³ |
| Temperature | 2 to 8 °C |
| Refrigeration unit | Daikin inverter unit |
| Power supply | Solar and batteries only |
In operation: Site A, Sandiara. Commissioned in 2026. The cold room is held at temperature with about 15 kWh a day, including on days when outside air exceeds 40 °C.
For: cooperatives, markets, local authorities, organisations
Solar cold storage, freezer and processing site (Site B type)
Chilled storage, frozen storage and a processing workshop on the same ground.
| Component | Content |
|---|---|
| Containers | Three containers under a pitched roof |
| Solar | 35 kWp |
| Cold room | 60 m³ |
| Freezer room | Yes (-18 °C) |
| Workshop | Washing, cutting, heat treatment, vacuum packing, freezing. One-way flow for hygiene |
| Power supply | Solar and batteries only |
In operation: Site B, Sandiara. The women’s group GIE DIAMI SANDIARA processes mangoes there.
For: processors, cooperatives, markets, organisations, government projects
The Sandiara solar cold storage pilot is supported by a grant from the MOL Blue Ocean Fund (Mitsui O.S.K. Lines).
What is delivered with the site
A container on its own does not make a site. TUMIQUI JAPON SASU delivers what is needed to keep it running over the years.
| Component | Content |
|---|---|
| Electricity | Solar panels, batteries and inverters, sized for the use of the site |
| Cold | Insulated container, refrigeration unit, temperature control |
| Remote monitoring | Temperature, solar output and battery level monitored from Dakar and from Japan |
| Training | Training of operators in operation, lot recording and hygiene |
| Maintenance | Technicians based in Senegal, spare parts managed in Senegal |
The steps
- Consultation. You tell us the use, the location, the products concerned and the capacity needed.
- Site visit. A technician checks sunlight, access, water and the surrounding markets.
- Design and quote. We propose the configuration: electricity, cold storage, freezing, processing, KIOSK. The quote is in writing.
- Construction. Containers and equipment are received in Senegal and assembled on your land by TUMIQUI JAPON SASU technicians.
- Training and handover. Operators are trained on site. The site is handed over with its documents.
- Follow-up. Remote monitoring and maintenance continue after handover, according to the contract.
Three design choices
Cut consumption before adding panels. The less the cold room consumes, the smaller the solar array and batteries can be. The 15 kWh a day at Site A come from the insulation and the inverter refrigeration unit.
Produce more electricity than the cold needs. The daytime surplus runs the processing workshop and the KIOSK. The site does more than keep things cold.
Choose the location with the client. A cold room in the growing area empties out at the end of the harvest. At a market, it runs all year. The location is decided before building.
Both Sandiara sites can be visited by appointment.
We are looking for partners. Product deployment, joint projects and field pilots.