Commentary on Sections Part 2 - Carbon Budgets Section 27: Setting of carbon budgets: timing
This section places a duty on the Department to set the carbon budgets for the first three budgetary periods before the end of 2023, and to set the carbon budgets for the fourth and subsequent budgetary periods at least 12 years in advance of the budget period commencing.
Subsection (2) enables the Department to amend the carbon budget for any budgetary period before the start of a budget period, and to amend the date by which a carbon budget should be set. Use of the power to amend the carbon budgets is subject to one of the conditions in section 54 having been met. Use of this power may be necessary, for example, in a situation where the emissions targets in the Act have been amended.