Scope
Description
SSEN are the electricity Distribution Network Operator (DNO) responsible for delivering power to 3.8 million homes and businesses and homes across central southern England and the north of Scotland. We serve some of the most diverse and unique geographies across the UK, and keep customers and communities connected whilst developing the flexible electricity network vital to achieving net zero.
Our North of Scotland licence area (SHEPD) covers 25% of the UK land mass but is most sparsely populated Distribution Network Operator (DNO) in Great Britain, with roughly 14 customers per square km. It includes 59 remote island communities supplied and interconnected through 110 subsea cables with the combined length of 454km. We currently own and operate seven Distributed Embedded Generation (DEG) & 1 Thermal Embedded Generation (TEM), sites which provide continuity of services if the cables supplying the islands are on outage or have faulted TEM sites currently operate 24/7 as the main source of power for Shetland but is scheduled to be a standby site in the future. Currently diesel-powered units were established in the 1950's before the use of subsea cables when on outage and following faults, especially to island communities.
We are looking for supplier's who are capable to provide support across the DEG & TEM sites for mechanical works this will include welding, fabrication, spares and tank maintenance. This can include works across -
- Fabrication
- Pipe welding
- Structural welder
- Pipe Fitting
- Mech fitting
- Tank Maintenance
- Specialist Welding
- Structural Steelwork
Commercial tool
Establishes a framework
Total value (estimated)
- £9,000,000 excluding VAT
- £10,800,000 including VAT
Above the relevant threshold
Contract dates (estimated)
- 28 November 2025 to 1 September 2029
- Possible extension to 1 September 2032
- 6 years, 9 months, 4 days
Description of possible extension:
4 one year extension periods will be included.
Main procurement category
Services
CPV classifications
- 31122000 - Generator units
- 50532400 - Repair and maintenance services of electrical distribution equipment
Contract locations
- UKM - Scotland
Lot constraints
Maximum number of lots a supplier can bid for: 1
Maximum number of lots a supplier can be awarded: 1
Description of how multiple lots may be awarded:
1
Lot 1. Lerwick & Kirkwall
Description
Providing Framework services for Lerwick and Kirkwall Power Station
Lot value (estimated)
- £9,000,000 excluding VAT
- £10,800,000 including VAT
Framework lot values may be shared with other lots
Same for all lots
CPV classifications, contract locations and contract dates are shown in the Scope section, because they are the same for all lots.
Lot 2. Loch Carnan & Barra
Description
Providing framework services for Loch Carnan and Barra power station
Lot value (estimated)
- £9,000,000 excluding VAT
- £10,800,000 including VAT
Framework lot values may be shared with other lots
Same for all lots
CPV classifications, contract locations and contract dates are shown in the Scope section, because they are the same for all lots.
Lot 3. Battery Point & Arnish
Description
Providing Framework services for Battery point and Arnish power station
Lot value (estimated)
- £9,000,000 excluding VAT
- £10,800,000 including VAT
Framework lot values may be shared with other lots
Same for all lots
CPV classifications, contract locations and contract dates are shown in the Scope section, because they are the same for all lots.
Lot 4. Bowmore & Tiree
Description
Providing framework services for Bowmore & Tiree Power Station
Lot value (estimated)
- £9,000,000 excluding VAT
- £10,800,000 including VAT
Framework lot values may be shared with other lots
Same for all lots
CPV classifications, contract locations and contract dates are shown in the Scope section, because they are the same for all lots.
Framework
Maximum number of suppliers
Unlimited
Maximum percentage fee charged to suppliers
0%
Framework operation description
Evaluation process will be conducted to ensure Submissions are reviewed in a transparent and impartial manner.
Evaluation will be carried out by a group of selected representatives from the organisation and will follow the following process
1. Preliminary review to ensure compliance
2. Individual evaluation of technical tender submission documents against the set award criteria
3. Consensus review between all evaluators
4. Recommendation presented to Approver Group
5. Selection of Recommended Tenderers to ITT stage.
Award method when using the framework
Without competition
Contracting authorities that may use the framework
SSE Thermal Generation (Scotland) Limited
Contracting authority location restrictions
- UK - United Kingdom
Participation
Technical ability conditions of participation
Lot 1. Lerwick & Kirkwall
Lot 2. Loch Carnan & Barra
Lot 3. Battery Point & Arnish
Lot 4. Bowmore & Tiree
As per 0_PQQ phase instructions and tender key dates
Particular suitability
Lot 1. Lerwick & Kirkwall
Lot 2. Loch Carnan & Barra
Lot 3. Battery Point & Arnish
Lot 4. Bowmore & Tiree
Small and medium-sized enterprises (SME)
Submission
Enquiry deadline
22 August 2025, 5:00pm
Submission type
Requests to participate
Deadline for requests to participate
30 August 2025, 11:59pm
Submission address and any special instructions
SSEN invite interested suppliers to view the Tender Documents on our Jaggaer e-procurement system under "Current Opportunities" here: https://sse.app.jaggaer.com/go/4652802201985FD1720F Full details of the service required and how to respond to the invitation to tender can be found on that page.
Tenders may be submitted electronically
Yes
Languages that may be used for submission
English
Award decision date (estimated)
28 November 2025
Award criteria
| Name | Type | Weighting |
|---|---|---|
| Price | Price | 60% |
| Technical | Quality | 40% |
Other information
Conflicts assessment prepared/revised
Yes
Procedure
Procedure type
Competitive flexible procedure
Special regime
Utilities
Competitive flexible procedure description
PQQ issued for response. Please refer to 'PQQ - FW Repair & Maintain - Embedded Generation Mechanical Works - Multi Site 0332' including key dates.
Documents
Documents to be provided after the tender notice
The ITT will issued out electronically via Jaggaer to tenderers who have passed the PQQ stage.
Contracting authority
SCOTTISH HYDRO ELECTRIC POWER DISTRIBUTION PLC
- Companies House: SC213460
Inveralmond House, 200 Dunkeld Road
Perth
PH1 3AQ
United Kingdom
Contact name: Susan Anderson
Telephone: 01738 355660
Email: Susan.Anderson@sse.com
Website: http://www.ssen.co.uk
Region: UKM77 - Perth & Kinross and Stirling
Organisation type: Private utility