The form of regulation factors are--
(a) the presence and extent of any barriers to entry in a market for pipeline services;
(b) the presence and extent of any network externalities (that is, interdependencies) between a covered gas service provided by a service provider and any other covered gas service provided by the service provider;
(c) the presence and extent of any network externalities (that is, interdependencies) between a covered gas service provided by a service provider and any other service provided by the service provider in any other market;
(d) the extent to which any market power possessed by a service provider is, or is likely to be, mitigated by any countervailing market power possessed by a user or prospective user;
(e) the presence and extent of any substitute, and the elasticity of demand, in a market for a pipeline service in which a service provider provides that service;
(f) the presence and extent of any substitute for, and the elasticity of demand in a market for, electricity or gas (as the case may be).