On 1st October
However – in an announcement on June 14th 2022 – the government proposed a further PSO levy decrease that will result in a negative figure or a PSO “rebate” for domestic household bills,
This lower revised 2022/23 PSO levy, was confirmed at the end of July by the CRU , and it resulted in an annual reduction of €89.10 for domestic customers. This PSO levy credit was applied to bills for the period 1st October 2022 to 30th of September 2023.
The PSO Levy credit of €89.10 credit was spread over the 7 months from March to September (€12.73 a month)
The PSO levy went back up to Zero from Oct 1st 2023. So this resulted in all bills rising by €12.73 a month.
This PSO is imposed by the Government on all electricity customers regardless of their supplier and is shown as a separate item on electricity bills. It is designed to recover the additional costs associated with electricity from specified sources of generation, including sustainable, renewable and indigenous sources.
You can see here more about the PSO levy.
Comparison of Energy Prices here