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Renewal of Wärtsilä’s operation & maintenance agreement ensures continued production reliability for Mauritanian gold mine

Wärtsilä Corporation, Trade press release 18 December 2025 at 08:00 UTC+2
  • Wärtsilä has renewed its operation & maintenance agreement with Tasiast Mauritanie Limited S.A., a subsidiary of the Canadian group Kinross Gold Corporation for another three years.  © Wärtsilä Corpor

Technology group Wärtsilä has renewed its operation & maintenance agreement with Tasiast Mauritanie Limited S.A., a subsidiary of the Canadian group Kinross Gold Corporation for another three years. The agreement will ensure that the gold mine’s 60 MW power plant continues to operate reliably and safely to support the facility’s production schedules. The order with Wärtsilä was booked in Q2 2025.

Wärtsilä has been operating and maintaining the power plant since it was built in 2013. In connection with the power plant extension in 2022, an outcome-based element was introduced in the agreement focusing on delivering measurable results aligned with the mine’s commercial and operational targets in a sustainable way. The entire O&M agreement and the outcome-based element promote a shared responsibility between Wärtsilä and the customer in achieving these targets.  

The mine is located approximately 300 kilometres north of Mauritania’s capital, Nouakchott. The mine relies on electricity from an isolated hybrid grid comprising of solar power and batteries, with the Wärtsilä power plant providing both baseload power and spinning reserve to secure consistent energy for the hybrid grid.
“Our operation & maintenance agreements cover every aspect of the power plant’s day-to-day operation and all related maintenance and administration tasks. By tailoring the agreement to the customer’s specific requirements, we can deliver performance and lifecycle cost guarantees to add considerable value to the business,” comments Patrick Borstner, Director, Operations Africa at Wärtsilä Energy.

Wärtsilä supplied the equipment for the power plant in 2013, and extended the plant under an engineering, procurement and construction contract in 2021. A new project to install two additional Wärtsilä engines is currently in progress.  

Media contact for more information on this release:
Katri Pehkonen
Communications Manager
Wärtsilä Energy
Mob: +358 50 591 6180
katri.pehkonen@wartsila.com

Image caption: Wärtsilä has renewed its operation & maintenance agreement with Tasiast Mauritanie Limited S.A., a subsidiary of the Canadian group Kinross Gold Corporation for another three years.  © Wärtsilä Corporation 

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Wärtsilä Energy in brief 
Wärtsilä Energy is at the forefront of the transition towards a 100% renewable energy future. We help our customers and the power sector to accelerate their decarbonisation journeys through our market-leading technologies and power system expertise. Our solutions include flexible engine power plants, energy storage and optimisation technology, and services for the whole lifecycle of our installations. Our engines are future-proof and can run on sustainable fuels. Our track record comprises of 79 GW delivered power plant capacity and over 130 energy storage systems in 180 countries around the world. Over 30% of our operating installed base is under service agreements.
www.wartsila.com/energy

Wärtsilä in brief 
Wärtsilä is a global leader in innovative technologies and lifecycle solutions for the marine and energy markets. We emphasise innovation in sustainable technology and services to help our customers continuously improve environmental and economic performance. Our dedicated and passionate team of 18,300 professionals in more than 230 locations in 77 countries shape the decarbonisation transformation of our industries across the globe. In 2024, Wärtsilä’s net sales totalled EUR 6.4 billion. Wärtsilä is listed on Nasdaq Helsinki.
www.wartsila.com