Written questions by Mayhew.

Whether his Department has a contingency plan for future fuel rationing schemes.

The UK benefits from a diverse and resilient supply chain and remains well supplied across all fuel types with strong and varied sources of supply. Government routinely reviews and exercises its preparedness arrangements for a range of scenarios, including through the published National Emergency Plan for Fuel (NEP-F). This is a long-standing, precautionary framework designed to ensure that, in the unlikely event of a severe and sustained disruption, fuel can be prioritised for those who need it most. It is important to stress that these measures are precautionary. We are not currently at, nor approaching, the threshold for their use, and fuel continues to be available through normal supply routes.

When Ministers in his Department first assessed the relevance of the EU Carbon Border Adjustment Mechanism to the inclusion of maritime emissions within the UK Emissions Trading Scheme.

Neither the UK Carbon Border Adjustment Mechanism (CBAM) nor its EU equivalent applies to maritime emissions, and this instrument does not introduce any CBAM obligations for maritime operators. The Common Understanding, published in May 2025 sets out the parameters for a linking agreement between the UK and EU emissions trading schemes, including that the link should apply in respect of domestic and international maritime.Linking will facilitate an exemption from the EU CBAM, removing a major barrier to trade and lowering costs for UK businesses.

What the average domestic electricity price per kWh was in each year since 2021.

The department publishes statistics on the cost of domestic electricity and gas.Annual domestic energy bills - GOV.UK This includes tables (2.2.4 for electricity and 2.3.4 for gas) outlining the average unit price in £/kWh and average fixed cost (standing charge) in £/year for the United Kingdom and by region. This also includes tables (2.2.3 for electricity and 2.3.3 for gas) outlining the average unit cost in p/kWh inclusive of fixed costs for the United Kingdom and by region. These are calculated using data supplied directly to the department by a sample of domestic energy suppliers.

What steps he plans to take to prevent the UK ETS from operating as a pay-to-pollute scheme for maritime operators unable to access decarbonisation infrastructure.

The Emissions Trading Scheme is a cap-and-trade system with a declining cap that ensures emissions from the traded sector, including the domestic maritime sector, fall in line with the United Kingdom’s statutory net zero commitments. The scheme limits total emissions and enables reductions to occur where they are most cost effective, without prescribing specific technologies in any sector.For maritime operators, the scheme provides a clear price signal that supports investment in cleaner vessels, operational efficiency and emerging low carbon fuels. The Government will continue to work with industry to support the development of infrastructure and technologies needed to facilitate decarbonisation.

What assessment he has made of the potential impact of Great British Energy on household energy bills.

In an unstable world, the only way to guarantee energy security and protect billpayers is to reduce our exposure to volatile international markets. Great British Energy is driving the deployment of the clean, homegrown energy. It will ensure UK taxpayers, billpayers, and communities reap the benefits of this.