Wind turbine specialists

Maintenance & service
for wind turbines

Over 15 years of experience with Siemens, Nordex and Vestas turbines.
Onshore and offshore – your reliable partner for all maintenance needs.

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About us

A trusted partner
in wind energy

TVH has established its name as one of Finland's most reliable local wind work contractors. We handle fault-finding, retrofits, repairs and routine maintenance.

TVH has played a part in the success of some of Finland's most productive and highest-availability wind farms to date.

Fault-finding & diagnostics

Fast and accurate troubleshooting to minimise downtime at your wind farm.

Maintenance & repairs

From routine servicing to main component exchanges – all under one roof.

Offshore maintenance

Offshore wind farm experience since 2019, including Siemens 4 MW and 2.3 MW turbines.

History & background

2015 Founded

Services

What we do

Fault-finding

Systematic troubleshooting and diagnostics across all OEM turbine platforms.

Maintenance & servicing

Annual services, routine updates and preventive maintenance to maximise availability.

Repairs

Mechanical and electrical repairs, blade and generator alignments, pitch cylinder replacement.

Retrofits

Upgrades and retrofits to existing turbines to improve performance and extend lifespan.

Offshore

Offshore wind maintenance operations. Siemens 4 MW and 2.3 MW pilot turbines.

CMS systems

Condition monitoring system installation in partnership with SKF for industry and wind farms.

Team

Our people

Jussi Lehti

Owner

Over 15 years of experience on Siemens and Nordex turbines. Strong mechanical background and Finnish Electrical Qualification 3.

+358 400 983 313

jussi.lehti@tuulivoimahuoltoa.fi

Winda ID: JL812862FI

Jami Elonen

Field Technician · Electrician

Experienced Nordex and Siemens wind turbine technician.

+358 50 0826 356

jami@nettijetti.com

Winda ID: JE059715FI

Contact

Get in touch

Tuulivoimahuolto J. Lehti Ltd