As a CAB, MET can serve as a Competent Body for the European EMC Directive. MET's Electrical Wattmeter Certification Program Gains Strong Allies in Canada. No 1010.1 for safety criteria. Watthour meters for revenue generation has traditionally been provided mainly by public Utility Companies. However, with deregulation of utilities and for energy conservation concern, watthour meters are being purchased and installed by others.
Some states have what is known as sub-metering laws.
This allows a landlord such as an apartment house owner to install meters on individual tenants and charge them for the energy used. The cost usually must be approximately equal to the cost the local utility would charge for the same service. With deregulation, companies will be formed to buy electricity at wholesale and sell it at retail. In most jurisdictions the meters do not go through the process public utility must follow for accuracy and safety. Issues concerning continuing compliance have not been addressed.