Posted on December 1, 2025
Technology group Wärtsilä and Electricidade De Timor-Leste, Empresa Pública (EDTL, EP) have renewed their integrated Operation and Maintenance (O&M) agreement for three years. The agreement covers two power plants, Hera and Betano, in Timor-Leste in Southeast Asia, with a combined output of 255 MW. Ensuring continuous availability of these plants is vital to the country, as they are the only plants supporting the national grid. The order was booked by Wärtsilä in Q2 2025.
Wärtsilä has operated and maintained the Hera and Betano power plants since they were commissioned in 2012. Both plants operate with Wärtsilä 46 engines. The proven success of Wärtsilä’s services in ensuring consistent high performance with minimal downtime was cited as the basis for renewing the O&M contract.
“These power plants are a valuable national asset and are critical to the country’s industrial and consumer electricity supply. Reliable performance is therefore essential, and Wärtsilä’s high quality service has provided the peace of mind needed,” comments Mr. Paulo da Silva, the President Director of EDTL, EP.
EDTL, EP plans to harness renewable energy within the next two years by installing solar panels and battery energy storage systems. Wärtsilä will consult and provide technical support for the integration of the existing Wärtsilä engines and the new renewable energy installations to maintain grid stability.
“Wärtsilä has a proven track record of delivering reliable, high-value services. Our extensive experience in O&M services for power plant operators worldwide allows our customers to focus on their core business, while we ensure their plants operate efficiently and reliably,” says Kari Punnonen, Energy Business Director, Australasia at Wärtsilä Energy.
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 and Electricidade De Timor-Leste, Empresa Pública have renewed their integrated operation and maintenance agreement for three years. © Wärtsilä Corporation
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 79 GW of 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
