Fen meadow habitat creation

Activity: Ecological work

Sizewell C is establishing a new area of Fen Meadow east of Friday Street in Benhall & Sternfield to create compensatory fen meadow habitat for a variety of species.

To compensate for a small area of Sizewell Marshes needed during construction we are planning to deliver substantially larger areas of compensatory habitat at off-site locations in Benhall, Pakenham, and Halesworth.

We are rewilding areas that were once low grade arable land to create a mosaic of heathland, scrub, woodland, wetland and fen meadows.

Planning consent to proceed with the habitat was given by East Suffolk Council in January 2023 and work began on the site in May 2023. However, following the recent adverse weather conditions and excessive rainfall, work on site has been delayed due to the excessively wet ground conditions. Considering the site ecology and the conditions, work on site has now been suspended until Spring 2024. Please find details of the updated schedule below:

Preparatory works at the Benhall Fen Meadow site have commenced and the timeframe for the habitat creation project is from July 2023 – July 2024.

December 2023 -March 2024: The site is closed for work and the perimeter will continue to be secured with fencing and patrolled regularly by security teams.
Late March 2024: The site team will re-mobilise and traffic management will be installed on the A1094 at the bell mouth entrance to the site, to ease the movement of transport and equipment. This traffic management involves periodic use of traffic lights, which will turn green or be removed when not required.
April – June 2024: Site excavation and earthworks to remove soil and re-align water levels to create ideal ecological conditions will re-commence.
July 2024: Contractors will remove the site facilities and commence re-wilding, where required.

For further information, please see the links to the Development Consent Order (DCO) information:

The Sizewell C Project | National Infrastructure Planning (