On top of 6.1 together with 6.2.1, before deciding that a new scheme is needed the owner or manager shows it has weighed whether the scheme would help its network and system move to net zero; works out which schemes make up its share of that move and lays down a dated plan that meets or beats the targets; identifies the carbon cost of the climate resilience the asset, network or system needs; looks for, and favours, chances to change land use or use nature-based measures that help decarbonise the network or system; fixes what lies inside the study boundary, network and system effects included; quantifies carbon effects under clause 7, concentrating first on the emissions and removals that could decide which option is lowest in carbon; compares every option's whole life carbon over the lifetime of the outcome sought rather than of a single asset; sets baselines and dated targets for the scheme; and can show it considered alternatives with less whole life carbon and options that make the most of existing assets where that gives the lowest result.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.