CALLIO IN PYHÄJÄRVI, FINLAND – YOUR UNDERGROUND SUCCESS FACTOR
The Pyhäsalmi Mine, located in the town of Pyhäjärvi, Finland, is one of the deepest known mines in Europe reaching 1,445 metres underground. As mining will end, a globally unique multidisciplinary operating environment, Callio, will emerge. The mine and the surrounding brownfield area offer a diverse range of opportunities for success for new and innovative projects and established operators seeking new horizons alike. Will your business be one of the first to seize the opportunity?
Latest news »
Staff information in Callio Pyhäjärvi 1.9.2025. Read more.
Press Release 25.4.2025: SENS, Vimab, and Mine Storage form joint venture to advance UPHS project in Pyhäsalmi. Read more.
Press Relese 1.2.2025. SENS doubles capacity of Finnish battery project to 170 MWh. Read more.
Callio is using Nokia’s world’s first 5G 360° camera in industrial use. Nokia 10.12.2024. Read more.
Sandvik’s long-haul ramp test round was performed in the Callio FutureMINE in Pyhäjärvi, Finland. 9.12.2024. Read more.
Australian Mining 17.10.2024: The Sandvik 60-tonne diesel-electric technology demonstrator truck has completed its testing at Callio FutureMINE in Pyhäjärvi, Finland. Read more.
Underground Pumped Hydro Energy Storage (UPHS) is moving forward! Regional State Administrative Agency (AVI) has granted to Suomen Energiavarasto Ltd the right to take water from Pyhäjärvi, and environmental permit for Pyhäsalmi Infra Ltd to Water tratment and management of discharging from the Pyhäsalmi Mine underground facilities.24.9.2024. Read more.
Sandvik – BEVs on the way to meeting their huge productivity potential in operations. The concept diesel-electric truck is being tested at the Callio mine in Finland. International Mining 18.5.2024. Read more.
Latest publications »
Advanced Navigation Conquers Europe’s Deepest Underground Mine, Callio Pyhäjarvi, without GNSS or Fixed Infrastructure. 11.8.2025. Read more.
Press release 10.6.2025: ARCEM (Norway) unveils plans for major data center project in Pyhäjärvi, Finland. Read more.
Press release 9.6.2025: Finland’s first solar park, Callio Solar Park I, built in a mining area has been commissioned, and electricity production started on June 4, 2025. Read more.
Press release 18.12.2024: SENS highlights Callio project and strengthened relationships. Read more.
Press release 2.10.2024: SENS acquires battery and underground pumped storage project in Finland. Read more.
Press release 3.6.2024: Callio project strengthened as Dovre Group Plc joins the consortium to engage in the 85 MW BESS solution. Read more.
Press release 21.5.2024: SENS signs Principal Agreement with Callio for Pyhäsalmi energy storage project. Read more.
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