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Varanto - The World's Largest Cavern Thermal Energy Storage

When Varanto is completed, it will be the world’s largest seasonal thermal energy storage facility in terms of size and capacity.

Vantaa Energy is one of Finlands largest urban energy companies, and we are solving the biggest challenges of our time by ensuring that energy and limited resources are circulated as smartly as possible. We aim for carbon negativity in energy production in 2030. We are constantly innovating to ensure that the people of Vantaa have access to affordable, secure and sustainable energy and the related services now and in the future.


Our ongoing projects

Varanto - The Cavern Thermal Energy Storage

We are building a seasonal thermal energy storage facility in Vantaa. Our seasonal thermal energy storage is called Varanto. When completed, it will be the largest in the world by all standards.

High-Temperature Incineration Plant

Vantaa Energy is building a High-Temperature Incineration Plant to treat non-recyclable household and industrial hazardous waste.

Electric boiler

We are expanding our emissions-free heat production and building an electric boiler and thermal battery for the Martinlaakso Power Plant.

Our sustainability work

Vantaa Energy’s sustainability policy

The sustainability policy guides everything Vantaa Energy does. 

Sustainability review 2021

Check out our sustainability review to get to know the basics of our work.

Code of Conduct for Suppliers

Vantaa Energy’s relationships with customers and partners are based on honesty and trust.

A climate-friendly energy distribution channel

District heating is the most popular form of heating for properties and homes in Finland’s large cities. District heating is made possible by the underground district heating network that most of the properties in the large cities are connected to.

Read more about the district heating network

Want to help tackle the circular economy’s most pressing issues?

The energy sector plays a major role in tackling climate issues. The world will not wait and the current solutions will not solve the challenges of the circular economy. We need innovations, the courage to think differently and the ability to find solutions. Vantaa Energy is an ambitious circular economy energy company that wants to be at the forefront of building tomorrow’s solutions and accelerating the development of the circular economy.

Read more about Vantaa Energy as an employer