Tariff availability in the domestic retail market .................................. 36 How would a typical rising block tariff affect a customer's usage in practice?..................................................................................... 37 Suppliers should consider offering zero standing charge tariffs to customers ................................................................................... 38 Can standing charges impact net zero transition?.............................. 39 Distributional impacts of shifting some or all standing charges to volumetric costs........................................................................... 40 Assessment of overall equivalised impact on all consumers ................. 44 Potential geographical impacts of a hypothetical transfer of cost from standing to volumetric charges ....................................................... 44 Impacts on vulnerable customers .................................................... 47