Scope
Description
Scottish and Southern Electricity Networks (SSEN) build and operate networks to best meet customer needs using the most efficient and flexible techniques possible. To do this, we have introduced Flexibility to help manage our network in the optimal way. The primary use case for Flexibility Services has been the economically efficient deferral of network reinforcements to manage thermal constraints.
A Stability Service is a different kind of Flexibility Service that does not fall under the typical standard flexibility services as it provides network stability as opposed to managing a thermally overloaded network asset. Network stability has historically been provided by synchronous generators such as gas turbines; however, in regions where more asynchronous generation is present, network stability becomes problematic. This is due to the lack of an inherent capability to provide stability in intermittent generators such as wind farms. The Western Isles network is an example of a region where we need an alternative source of stability during planned outages and fault conditions.
To address this requirement, SSEN are tendering for the provision of a Stability Flexibility Service for the Western Isles.
SSEN invite interested suppliers to view the Tender Documents on our Jaggaer e-procurement system under "Current Opportunities" here https://sse.app.jaggaer.com/esop/guest/go/opportunity/detail?opportunityId=422
Full details of the service required and how to respond to the invitation to tender can be found on that page.
Commercial tool
Establishes a framework
Total value (estimated)
- £1,200,000 excluding VAT
- £1,440,000 including VAT
Above the relevant threshold
Contract dates (estimated)
- 1 August 2025 to 31 December 2030
- Possible extension to 31 December 2032
- 7 years, 5 months
Description of possible extension:
2 one year extension periods will be included. These will be taken up if the service is still required at the end of the initial term.
Main procurement category
Services
CPV classifications
- 65300000 - Electricity distribution and related services
Contract locations
- UKM - Scotland
Framework
Maximum number of suppliers
Unlimited
Maximum percentage fee charged to suppliers
0%
Framework operation description
Prices are determined from the framework tender pricing.
Award method when using the framework
Without competition
Contracting authorities that may use the framework
Establishing party only
Participation
Particular suitability
Small and medium-sized enterprises (SME)
Submission
Enquiry deadline
2 May 2025, 11:59pm
Tender submission deadline
6 June 2025, 12:00pm
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/esop/guest/go/opportunity/detail?opportunityId=422
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)
31 July 2025
Award criteria
| Name | Type | Weighting |
|---|---|---|
| Quality | Quality | 60% |
| Price | Price | 40% |
Other information
Conflicts assessment prepared/revised
Yes
Procedure
Procedure type
Open procedure
Special regime
Utilities
Contracting authority
SCOTTISH HYDRO ELECTRIC POWER DISTRIBUTION PLC
- Companies House: SC213460
Inveralmond House, 200 Dunkeld Road
Perth
PH1 3AQ
United Kingdom
Email: susan.e.beveridge@sse.com
Website: http://www.ssen.co.uk
Region: UKM77 - Perth & Kinross and Stirling
Organisation type: Private utility