Prior information notice – Market dialogue building and ground contract for the new Tjøtta transformer station.

Invitation to Market Dialogue
Civil Works and Building Contract for the New Tjøtta Substation Project

KE Nett is the contracting entity for this procurement.
KE Nett AS is the electricity distribution system operator in the Municipality of Klepp on the Jæren region in Rogaland County, Norway. The company builds, operates and maintains the electricity distribution network and ensures a safe and reliable power supply for households, businesses, agriculture and public institutions. KE Nett is headquartered in Kleppe and is part of Klepp Energi Holding.

KE Nett AS is planning to establish a new substation at Tjøtta in the Municipality of Klepp. The purpose of this prior information notice is to obtain input from the market regarding the optimal procurement strategy for the new substation project, including the civil works and building contract.

In particular, KE Nett seeks the market's views on the most appropriate contract model, level of design maturity, allocation of detailed design responsibilities, interfaces with the electromechanical deliveries, and how project schedule risks and ground condition risks should be allocated.

A new substation will be established at Tjøtta in the Municipality of Klepp as part of the upgrade of the Jæren regional grid to 132 kV. The new Tjøtta Substation will replace the existing Tu Substation, primarily due to the age of the existing facilities.
The station will be constructed as a Class 2 substation and will primarily consist of the following components:
Substation building with two transformer bays and provision for a future third bay.

A construction licence has been granted, and the current plan is for the substation to be completed during 2030.

Electromechanical Installations
Two (2) 50 MVA transformers, 132/22-15 kV
132 kV GIS switchgear
22 (15) kV GIS switchgear, up to 26 bays
Two (2) 22 (15) kV capacitor banks
Two (2) neutral grounding reactors
Connection of the transformer neutral point on the 132 kV side to reduce earth fault currents in the 132 kV network

Civil Works and Building Contract
The civil works and building contract is expected to include the establishment of a complete substation site, including permanent access roads, site preparation, earthworks, excavation and material handling, foundations, and construction of a substation building with two transformer cells and provisions for a potential third cell.

The contract may also include:
Foundations and structures for technical installations
Cable basement and cable ducts
Trenches and cable routes
Drainage and stormwater management systems
Water and wastewater infrastructure
Outdoor grounding systems
HVAC installations
Building-related technical installations
Fencing and site security measures
Landscaping and external works
Site reinstatement works

Extensive coordination and interface management with separate transformer and electromechanical equipment contracts should be anticipated.

The final scope of work, contract model, design responsibilities and interface arrangements have not yet been determined and will be further developed based, among other things, on the outcome of this market dialogue.

Further information regarding the anticipated scope of the contract, as well as the questions for the market dialogue, is provided in Appendix 1 – Prior Information Notice – Civil Works and Building Contract.

Market Dialogue Meeting
The market dialogue will be conducted on 17 September 2026.

Available time slots are:
08:30 – 09:15
09:30 – 10:15
10:30 – 11:15
12:00 – 12:45
13:00 – 13:45
14:00 – 14:45

To register, please send an email to anders.rostbakken@inventura.no indicating:

Preferred time slot
Number of participants
Email addresses of all participants
This information is required in order to invite all participants to the Microsoft Teams meeting.

Registrations will be handled on a first-come, first-served basis. Market dialogue meetings will be held with a suitable number of suppliers based on the contracting entity's needs and capacity.