PLANS to further extend Shotton Paper Mill have been revealed.

Eren Holding, which bought the Deeside Industrial Estate-based site from UPM two years ago, has announced plans for its further expansion.

Last year,  Flintshire Council’s planning committee approved plans for 82 hectares of new factory buildings, processing plant, associated landscaping, offices, access and parking.

The scheme will create hundreds of new jobs. 

And Eren Holding has now launched a public consultation over two proposals to deliver a boiler building and a new Combined Heat and Power Plant (CHP).

One application for a boiler building will be submitted to Flintshire County Council and the application for the CHP will be submitted to the Welsh Government.

Eren Holding initially consulted on the CHP in March 2022. Since then, the plans have been updated and the company is now consulting on the amended plans.

The consultations are taking place ahead of the company submitting planning applications.

The two consultations are available to view at and will run as follows:

  • Flintshire County Council application from Tuesday, November 21 2023 – Tuesday December 19 2023
  • Welsh Government application from Tuesday, November 21 2023 – Tuesday, January 2 2024

Following the end of the consultation, Eren Holding will review all comments received and incorporate feedback provided into the final plans, where possible, before submitting a planning application.


The application for a 69 Mwe Combined Heat and Power (CHP) Plant is classified as a Development of National Significance (DNS) and therefore will be considered by the Welsh Government.

Eren Holding said the CHP plant will allow Shotton Mill to be more fuel efficient and limit fuel waste. CHPs utilise heat, which is a by-product of the electricity generation process, and turn it into electricity. By using the waste heat, the CHP facility can reach efficiency ratings in excess of 90 per cent, compared to gas power stations, which in the UK range between 49 per cent and 52 per cent.

In the future, the company aims to be able to utilise Hydrogen gas as a fuel source and Shotton Mill is currently active in a number of projects to enable Hydrogen supply both to Shotton Mill and the Deeside area. The CHP design has allowed for 20 per cent Hydrogen (H2) within the fuel blend. Design allows for component replacement to fire 100 per cent H2 once available to site.

The application for a boiler building, which will be submitted to Flintshire County Council for consideration, will be large enough to accommodate the future Combined Heat and Power facility (CHP) and contain an interim boiler ahead of the CHP obtaining planning consent.

The boiler will be used to generate steam to the already permitted containerboard and tissue machines in the initial start-up phase until the Combined Heat and Power Plant (CHP) is operational. Once the CHP is operational, the interim boiler will become a back-up boiler and only used during periods when the CHP is shut down for maintenance or existing Biomass Boiler is offline.