As anyone, I have to pay for the electricity, the gas or the water I am consuming in my house. As anyone, I would be very angry if I am overcharged and very happy if I am undercharged, and it would be the opposite for my energy provider.
This is why the instruments measuring all this for billing purposes are covered by regulations.
The term grid-level billing is related to commercial transactions between utilities, energy providers, or states. The simpler term billing is related to a commercial transaction between an energy provider and an energy consumer (customer). Grid level billing and billing are both related to legal metrology. Sub-billing is a somewhat different topic that I have described in a post related to management of energy costs.
- Commercial transactions (e.g. weight-price scales for retail stores, petrol pumps, water meters, etc.), when there is a need to protect both the buyer and the seller.
- Operations concerning public health or safety (e.g. gas analyzers, tachographs, radar speed detectors, breathalyzers, etc.).
For more detailed information on legal metrology applications, refer to the following resources:
Standards and regulations applicable to billing are shown in Table 1.
|Application Assessment Standards or Rules||Methods Standards||Product Standards|
|Any countries can define its own regulation and/or can refer to international documents, such as the IEC International standards or OIML guide||—||IEC 62052-xx
|OIML MAA (1)|| OIML R46 (Organisation Internationale de la Métrologie Légale)
(1) Participating in the OIML MAA commits the Participants in principle to accepting and using MAA Evaluation Reports issued by Issuing Participants.
|European regulation (MID = Measuring Instruments Directive 2014/32/UE
See the blog related to MID.
|WELMEC guides||EN 50470-1
|US regulation||—||ANSI C12.1, ANSI C12.20|
|Australian regulation (NMI)||—||NMI M-6|
|Indian regulation||—||IS 16244, IS 15884, IS 13779, IS 14697|
|Chinese regulation||—||JJG 596|
|Russian regulation No.4871-1 issued in 1993 and No.102-FZ issued in 2009||—||Pattern approval certificate (PAC)|
Table 1 – Documents related to Legal metrology
If you are looking for more details, you can check out the following documents:
|Measurement applications||White paper||Guide to energy measurement applications and standards|
For additional tools, resources and product information, please register for our dedicated Consulting Engineer portal site.