JO/WART E1L5 Masters Quarry overhead line, S37 Consent, Electricity Act 1989
Summary
DESNZ screening decision that replacing 7 poles on a 705m, 11kV overhead line at Masters Quarry near Wareham does not require a statutory Environmental Impact Assessment. The line crosses Stokeford Heaths SSSI, Dorset Heaths SAC/SPA and Ramsar; Natural England has granted assent for works between 1 October 2026 and 28 February 2027 subject to mitigations from the June 2025 Habitats Regulations Assessment.
Why it matters
Routine s.37 screening for a minor distribution rebuild. No precedent set, no rule change; the only point of interest is that even pole-for-pole replacements on existing low-voltage lines trigger HRA work when they cross protected habitats, which is a standing transaction cost on DNO refurbishment in sensitive areas.
Key facts
- •11kV overhead line, 705 metres, 7 poles replaced
- •Location: Wareham, Dorset
- •Applicant: Southern Electric Power Distribution PLC (SEPD)
- •DESNZ ref 2421u; applicant ref JO/WART E1L5 Masters Quarry
- •Crosses Stokeford Heaths SSSI, Dorset Heaths SAC, Dorset Heathlands SPA and Ramsar
- •Natural England assent window: 1 October 2026 to 28 February 2027 (ref 2406251000LJ)
- •Works duration: 4 days, daytime excavation, no overnight open pits
- •LPA (Dorset Council) raised no objection, ref P/STA/2025/04026, August 2025
- •Not EIA development under the Electricity Works (EIA) (England and Wales) Regulations 2017
Timeline
Areas affected
Related programmes
Memo
Secretary of State’s screening decisions in accordance with the Electricity Works (Environmental Impact Assessment) (England and Wales) Regulations 2017. Date of decision 30 April 2026 Location Wareham Dorset Type of project/consent requested Section 37 consent to install or keep installed an electric line. Energy Infrastructure Planning 3-8 Whitehall Place London SW1A 2JP Email: S37consents@energysecurity.gov.uk Website: www.gov.uk/desnz John O’Reilly Southern Electric Power Distribution PLC New Forest Depot Minstead Lyndhurst SO43 7PE Our ref: 2421u Your ref: JO/WART E1L5 Masters Quarry 30 April 2026 Dear Mr O’Reilly, SCREENING DECISION BY THE SECRETARY OF STATE UNDER THE ELECTRICITY WORKS (ENVIRONMENTAL IMPACT ASSESSMENT) (ENGLAND AND WALES) REGULATIONS 2017 (“THE 2017 REGULATIONS”) NAME OF SCHEME: JO/WART E1L5 Masters Quarry Decision: The Secretary of State concludes that the proposed works are not EIA development under the 2017 Regulations and do not require a statutory EIA as they are unlikely to have significant effects on the environment due to their nature, location and size. A copy of this letter has been sent to the LPA for information. Screening decision for a proposed development (“the proposed development”) to: • Replace 7 poles as part of a 11kV, 705 metre overhead line Secretary of State considerations: The Secretary of State has considered the factors set out in Schedule 3 of the 2017 Regulations, together with the information within the supplied documentation (“the Application”) by Southern Electric Power Distribution PLC (“the Applicant”) in relation to the impacts on the environment of the proposed development and the views of Dorset Council (“the LPA”). In reaching his decision, the Secretary of State notes the following factors: 1. The proposed development does not fall within Schedule 1 (mandatory EIA). 2. The proposed development falls under Schedule 2 of the 2017 Regulations as the electricity line is to be installed above ground in a sensitive area. 3. The proposed development falls within the following designated sensitive areas: o Stokeford Heaths Site of Special Scientific Interest (SSSI) o Dorset Heaths Special Area of Conservation (SAC) o Dorset Heathlands Special Protected Area (SPA) o Dorset Heathlands Ramsar 4. The Applicant produced a Habitats Regulations Assessment (HRA) in June 2025 which provided details on the working method, risks to protected sites, and proposed mitigation measures. 5. Natural England was consulted regarding the designated sensitive areas and granted assent to the development from the period between 1 October 2026 and 28 February 2027 based on the HRA submitted regarding the proposed development (Natural England reference: 2406251000LJ). 6. In January 2026, the applicant produced an ecology survey to assess the possible risks and mitigations of the development. The survey advised mitigations such as conducting a pre-works badger check and having an ecological clerk of works present on site required species checks. 7. Having considered the HRA, the Secretary of State considers there may be likely significant effects on a National Site Network site under the Conservation of Habitats and Species Regulations 2017. This is due to potential disturbance to European dry heaths habitats, great crested newts and breeding birds, as a result of excavations and vehicle movements. The Secretary of State has considered whether there could be an Adverse Effect on Integrity of the protected site. The works are expected to take four days, where excavations will be undertaken during the day and will not be left open overnight. An Ecologist will check for reptiles prior to excavation commencing. The proposed development will be carried out outside of bird breeding season and works vehicles will stay on designated routes and will not drive on habitats beyond these routes. 8. In light of the proposed mitigations, the Secretary of State is satisfied that there will be no Adverse Effect on Integrity of the protected site, and this is beyond all reasonable scientific doubt. 9. The Applicant consulted with the LPA who noted no objection to the proposed development (reference: P/STA/2025/04026) in August 2025. It concluded that the development is unlikely to result in a likely significant environmental effect and is not EIA development. Yours sincerely, John McKenna Head of Network Planning team Energy Infrastructure Planning Delivery Team