(1) The Secretary of State must publish guidance on the measurement or calculation of greenhouse gas emissions to assist the reporting by persons on such emissions from activities for which they are responsible.
(2) The guidance must be published not later than 1st October 2009.
(3) The Secretary of State may from time to time publish revisions to guidance under this section or revised guidance.
(4) Before publishing guidance under this section or revisions to it, the Secretary of State must consult the other national authorities.
(5) Guidance under this section and revisions to it may be published in such manner as the Secretary of State thinks fit.