Does the Zero Carbon definition align with the energy efficiency element of CSH level 5? (i.e. regulated emissions)

The Zero Carbon definition requires, as CfSH L5 does, all the carbon emissions from regulated energy use to be tackled. 

In the proposed Zero Carbon definition this is achieved through a stepped, 3-tier approach, where specific levels of performance in regards to the fabric's energy efficiency and predicted carbon emissions need to be achieved before accessing Allowable Solutions (off site off-setting mechanism).

CSH5 requires all emissions from regulated energy use to be tackled through on site measures (so no off site Allowable Solutions mechanism). 

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