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About the company

Finland's most reliable
local wind contractor

As Finland's renewable energy and wind power sector grew rapidly, there was a clear demand for a dedicated local wind turbine maintenance company — so Jussi Lehti founded Tuulivoimahuolto J. Lehti Ltd in 2015.

Local expertise,
national reach

TVH has established its name as one of Finland's most reliable local family-operated wind work contractors.

We can provide experienced technicians for any wind farm operator on any model or platform, both onshore and offshore.

Our technicians are fully equipped with certified Personal Protective Equipment, regulation tools and work licencing to GWO and Finnish national standards.

Our partners value our service as we strive to have turbines performing in optimal condition with minimal downtime and operating beyond their estimated life expectancy.

Siemens turbines

Bonus 1 MW, 2 MW, Negmicon 750 kW, 2.3 MW and 4 MW — all platforms covered.

Nordex turbines

Nordex NC2, 5X Platform, generator and blade alignments.

Vestas turbines

Vestas V112 maintenance following DWPA-certified training from 2020.

A decade of progress

2007

Jussi Lehti joined the maintenance team of a local energy company. His responsibilities included installations, commissioning, main component exchanges and routine maintenance. From Bonus 1 MW and 2 MW turbines through to Finland's first 2.3 MW offshore turbine.

2015 – Company founded

Jussi Lehti founded Tuulivoimahuolto J. Lehti Ltd. The rapid growth of Finland's renewable energy sector created demand for a dedicated local wind maintenance contractor.

2017

TVH started performing wind farm maintenance across various sites — including Siemens and Nordex turbines.

2018

TVH continued Siemens turbine maintenance and deepened its partnership with Nordex.

2019

Offshore maintenance operations began in spring. TVH continues to assist annually with offshore maintenance of Siemens 4 MW and 2.3 MW Pilot turbines.

2020

TVH acquired Vestas training through DWPA and began assisting with Vestas V112 maintenance operations.

2021

TVH installed a CMS condition monitoring system in partnership with SKF for monitoring roller bearings at Corenso Paper Plant in Pori.

2022–2024

Nordex 5X Platform comes online in Finland. Nordex utilises TVH technicians to bridge the experience gap and support the influx of new technicians entering the industry.

Work with us

Interested?

Get in touch and we'll tell you more about how TVH can support your wind farm maintenance needs.

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