Artist impression of Sizewell C. The new powerstation shown in lighter grey. Copyright EDF Energy 2012 - Stag

Members of more than 20 town and parish councils surrounding Sizewell have submitted a critical response to proposals for a third nuclear power plant.

The Sizewell Parishes Liaison Group (SPLG) said details of two new reactors north of the Sizewell B station had not been sufficiently developed to enable full consultation on the impact to local communities.

It labelled the document on Sizewell C “vague and premature, and lacking in specific proposals to compensate the affected local communities” and called the design “an irregular jumble of block type buildings, squashed together in a haphazard manner”.

The first round of consultation began in November and ended on February 6 – a window SPLG said was “unrealistically short”.

It said that EDF Energy could not possibly engage with communities until the financial fundamentals of construction costing, energy pricing and the funding of decommissioning are clarified.

The group did praise the breadth of the consultation, proposals to encourage local people to seek employment, and plans for off-site short term freight storage.

A Sizewell spokeswoman said the new nuclear build team had met more than 4,000 people during consultation and that each issue raised will be considered and recorded. She added: “The feedback will be analysed and used to help develop detailed proposals which will be subject to a further stage of consultation.”