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Dissemination and Awareness of Measurement

Last Updated January 22, 2024

Dissemination and Awareness of Measurement

~ Is the child meter for electricity, water, gas, etc. within the validity period? ~
 Unlike meters (parent meter *) owned and managed by a supply company such as electricity and water, a child meter is used for allocating utilities expenses between managers and residents in rental buildings, condominiums, dormitories, etc. It is a measuring instrument. 
 Since these child meters have a validity period of the certification by the Measurement Law, uncertified products or those whose validity period has expired cannot be used for settlement of fees.

Valid validity period of the meter
TypeValidation period
Electrical meter (for general use)10 years or 7 years
Electrical meter (with transformer)5 or 7 years
Gas meter (city gas and propane gas)10 years or 7 years
Water meter8 years

※ A parent meter is a measuring instrument that each resident has directly contracted with suppliers (Tokyo Electric Power Company, City of Yokohama, Water Works Bureau, etc.) in office buildings, commercial facilities, and apartment. When the expiration date is approaching, the supplier will notify the user and replace it.
※ Has the expiration date of the electric child meter? (PDF: 1,578KB) (Flyer for Kanto Area Certification Electrical Meter Measures Committee Flyer)

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For inquiries to this page

Economic Affairs Bureau's Ministry of Economy, Labor and Labor Department

Phone: 045-671-2587

Phone: 045-671-2587

Fax: 045-664-9533

Email address: ke-keiryo@city.yokohama.jp

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Page ID: 113-083-397

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