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Key definition
Smart meter definition

What does Smart meter mean? In energy regulation and supply contracts, a smart meter is an advanced electricity metering system that records consumption in short intervals and communicates data remotely for billing, settlement and tariff management. In Great Britain, the concept is given effect by the Smart Metering Equipment Technical Specifications (SMETS 1/2) and the Smart Energy Code, rather than a single statutory definition. A compliant smart meter comprises an electricity meter and associated devices (such as a communications hub and in‑home display) and must have the functional capability and meet the other requirements in the SMETS applicable at the time of installation, including interoperability...

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Great Britain smart metering: regulatory framework, DCC/SEC governance, roll-out obligations, non-domestic options, and MAP–supplier contracting (churn, asset tracking and risk protections)

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Practice notes
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What is Smart metering?

For an introduction to smart meters, see also Practice Note: What is a smart meter? In Great Britain, licensed electricity and gas suppliers are required under their supply licences to take all reasonable steps to roll out smart meters to domestic and small business customers. The programme is expected to lower customers’ energy bills, boost energy efficiency, and make it simpler to switch energy supplier. The UK government views smart metering as a crucial instrument for a low‑carbon economy, reaching net zero emissions by 2050, and realising ambitions for an affordable, secure and sustainable energy supply chain.

The smart meter roll‑out has been extended on several occasions since the Electricity Act 1989 and Gas Act 1986 were amended to place duties on licensed suppliers to complete it. There have also been multiple reviews and publications on progress, including National Audit Office reports such as Rolling out smart meters (November 2018) and Update on the rollout of smart meters (June 2023). In August 2025, DESNZ announced plans to reform the regulatory framework that mandates the roll‑out...

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Web page updated on 28/05/2026

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