(1) Section 110(1) of the Principal Act is amended -

(a) by inserting the following definitions after the definition of "authorised officer":

"'carbon offsets' means -

(a) an allowance, permit, licence or right to emit during a specified period, a specified amount of carbon dioxide or any other greenhouse gas as defined in Directive 2003/87/EC of the European Parliament and of the Council of 13 October 2003 [OJ No. L275 of 25.10.2003, p.32] establishing a scheme for greenhouse gas emission allowance trading within the Community and amending Council Directive 96/61/EC of 24 September 1996 [OJ No. L257 of 10.10.1996, p.26], where such allowance, permit, licence or right is issued by a State or by an inter-governmental or supra-national institution pursuant to a scheme which -

(i) imposes limitations on the emission of such greenhouse gases, and

(ii) allows the transfer for value of such allowances, permits, licences or rights,

(b) an allowance, permit, licence or right to emit during a specified period, a specified amount of carbon dioxide or any other recognised greenhouse gas under a voluntary scheme sponsored by a State or by an inter-governmental institution, or regulated commercial enterprise, where such allowance, permit, licence or right is subject to recognised independent periodic verification, monitoring and reporting, or