More NSW households are struggling with growing gas costs, with the number of residential gas disconnections and those on payment plans jumping in the past financial year.

The latest figures from the Energy and Water Ombudsman NSW show residential gas disconnection increased by 54 per cent to 7555 in 2014-15.

Gas-related disconnections and complaints are rising, according to the Energy and Water Ombudsman NSW.

The rise in disconnections comes in the wake of a decision by the Independent Pricing and Regulatory Tribunal in 2014 to raise regulated gas prices by between 14.4 per cent and 19.4 per cent over two years. It said one of the main drivers was the increased exposure to the international gas market.

The figures also show the number of gas customers on payment plans increased by 63 per cent to 17,885. By contrast, the number of electricity customers on payments plans grew by 23 per cent.