Tahkoluoto
Located approximately 1.2 km off the Tahkoluoto peninsula near Pori, in the Gulf of Bothnia.
Status
Operationallifecycle stage
Ownership
SHSuomen Hyötytuuli Oy — 100% ◆
AYAlva-yhtiöt Oy / HOHelen Oy / LELappeenrannan Energia Oy / LALahti … ◆
Location
FinlandGulf of Bothnia
Technology
Capacity
42 MW ◆
Turbines
10 × 4.2 MW ◆
Model
Siemens Swt 4-0-130 ◆
Foundation
GBS ◆
Site & conditions
Site rights
Seabed rights held ∴
Water depth
1–20 m ≈
Distance from shore
1.2 km ◆
Wind speed
8.5 m/s @ 100 m ≈
Revenue & grid
Offtake
FiT ◆
Grid
Secured ◆
Schedule
FID
27 Jan 2016 ◆
COD
2017-Q3 ◆
Project timeline & ownership verified milestones on the spine · ownership from Hafrok's transactions record
6 dated milestones on the spine, each with its source · the ownership chain from Hafrok's transactions record · the developer's announced-COD history
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Revenue & offtake contract terms, price levels and the route to market
the FiT contract's terms · price over time in money of the day · the routes to market and the next visible round
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Installation how the build is going · from sourced statements and Hafrok's registers
construction status and turbines standing · vessel and port contracts · the grid connection and whether it is ready in time
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Sources & verification
Rests on 12 sources (7 primary) · ◆ 3 documents held
◆Verified≈Modelled◇Sourced∴Inferred⌁Convention○Unverified∅No source·Derived
Numbers are stable citation ids — grouped by source class, so they are not consecutive.
Operator6
[1]
[4]
Jan De Nul Group2026-06-16
“In 2016, Jan De Nul Group carried out preparatory works … In 2017, we installed the steel gravity-based foundations and the wind turbines. In the autumn of 2017, the wind farm was ready for use … Tahk…”
supportsFoundationport
[7]
[9]
Suomen Hyotytuuli2024
“the current Tahkoluoto offshore wind farm will be owned by the new Suomen Hyötytuuli Oy”
supportsoperator
[10]
Lappeenrannan Energia Oy2017-11-30
“Lappeenrannan Energian osittain omistama Suomen Hyötytuuli Oy juhli elokuussa maailman ensimmäisen jääolosuhteisiin suunnitellun merituulipuiston käyttöönottoa. ... Tahkoluoto tuotti osakkailleen sähk…”
supportsFirst power
[14]
Suomen Hyötytuuli Oy2016-01-27◆ Suomen Hyötytuuli to build an offshore w…
“27.01.2016 ... Suomen Hyötytuuli Oy is constructing an offshore wind farm in Pori, Finland. The construction of the world’s first offshore wind farm suitable for icy conditions will start this spring.…”
supportsFinal investment decision
Trade press5
[2]
offshoreWIND.biz2017-09-04
Press report — cited, not quoted; read it at the source link.
supportsCommercial operationTotal capacity
[3]
[5]
WindEurope2017-09◆ Finland opens its first offshore wind fa…
“42 MW Tahkoluoto wind farm … officially opened … ahead of schedule … first offshore wind farm designed for icy conditions … 83,5 €/MWh for 12 years … 1,2 kilometres from shore … 9 metres [water depth]”
supportsTotal capacityMechanismDetailDistance from shore
[12]
[13]
Encyclopaedic1
[11]
Wikipedia (Finnish)2026-07
“Voimalapuiston kaavoitus käynnistyi 2013 ja lainvoimaiset rakennusluvat saatiin vuoden 2015 maaliskuussa, lainvoimainen osayleiskaava elokuussa ja vesilain edellyttämä lupa joulukuussa.”
supportsConsentConsent granted
Early access