NOx emission reduction and licence variation from 1 January 2022
In December 2021 the EPA significantly reduced nitrogen oxides (NOx) emission limits and introduced strict new monitoring and reporting requirements for Vales Point Power Station as part of a five-year licence variation for the licensee, Delta Electricity.
- View the Vales Point Power Station Environment Protection Licence and licence variation on the Public Register
The licence variation begins on 1 January 2022 and includes
- A one hour average NOx 99 percentile limit of 850 milligrams per cubic metre - down 23% from the previous licence limit of 1100 milligrams per cubic metre.
- A one hour average NOx 100 percentile limit of 980 milligrams per cubic metre - down 35% from the previous licence limit of 1500 milligrams per cubic metre
Over the past six months Delta Electricity has undertaken works to improve NOx emissions from the Vales Point Power Station including the installation of new burner tips in boiler six, and the upgrade of the Distributed Control System to optimise the operation of boilers five and six.
The reduced limits reflect the changes made by Delta Electricity to reduce NOx emissions and the anticipated plant performance.
Operation of the Vales Point Power Station at these reduced limits is predicted to comply with the new National Environment Protection (Ambient Air Quality) Measure 2021 (NEPM) standard for Nitrogen Dioxide (NO2) in the local community.
In addition, the licensee of Vales Point power station is also required to
- install an additional air monitoring station at Wyee Point for NOx, sulfur oxides (SOx) and particulate matter (PM2.5) by 1 July 2022
- conduct a NOx emission control engineering feasibility study by 31 December 2022 and a SOx emission reduction study report by 1 July 2022, and
- complete a Pollution Reduction Program which includes a required Trigger, Action and Response Plan to minimise the risk of any NOx concentration limit exceedances at the premises and the continual improvement of their response to abnormal conditions that may lead to exceedances, by 1 July 2022.
The licence variation followed a thorough assessment of Delta Electricity’s application and supporting information in accordance with the EPA’s statutory obligations, as well as expert modelling and technical advice, and a public consultation period where more than 1,800 submissions were received.
- View Delta Electricity's application, supporting information and a consultation summary on Have your Say.
The full decision-making report and supporting technical documentation are available here