6. On the basis of the assessment referred to in paragraph 5 and on objective criteria, the Commission shall adopt delegated acts in accordance with Article 34 to supplement this Regulation by setting out the maximum methane intensity values associated with crude oil, natural gas and coal placed on the Union market at the level of the producer. Those delegated acts shall be consistent with the methodology for calculating the methane intensity of the production of crude oil, natural gas and coal placed on the Union market set out in accordance with this Article. Those delegated acts shall also specify different methane intensity classes for crude oil, natural gas and coal. Those maximum methane intensity values shall be determined separately for crude oil, natural gas and coal, covering the best performing class or classes. Those maximum methane intensity values and methane intensity classes shall take into account the different sources, production processes and site conditions and shall be set at levels that promote reductions of the global methane emissions in relation to the crude oil, natural gas and coal placed on the Union market, while preserving the security of energy supply at Union and national level, ensuring a balanced distribution of the volumes of crude oil, natural gas and coal placed on the Union market as well as non-discriminatory treatment, and protecting the competitiveness of the Union’s economy.