Do I have a half-hourly meter?

If your maximum demand is above 100 kVA or your profile class is 00 (S00 in the MPAN top-line), your meter reads every 30 minutes and is settled half-hourly. Profile classes 05–08 (P272) are also settled half-hourly.

What are MOP and DC/DA agreements?

A Meter Operator (MOP) maintains the physical meter. A Data Collector (DC) reads the half-hourly data and a Data Aggregator (DA) sends it into settlement. These contracts are separate from your supply contract and can be negotiated independently.

Service · Half-hourly electricity

Half-hourly electricity — pricing and management for HH-metered sites.

If your site draws more than 100 kVA at peak, you're on a half-hourly meter. Pricing is more granular, contracts are more nuanced, and the wrong strategy can quietly add tens of thousands to your annual spend.

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How HH pricing differs

Half-hourly (HH) supplies are settled in the wholesale market every 30 minutes against the actual demand your meter recorded in that window. That granularity flows through into your quote: you'll be priced against your specific load shape rather than an industry-standard profile, and the non-commodity elements (DUoS, TNUoS, BSUoS, CCL) are itemised on your bill instead of bundled into a flat p/kWh.

Fixed, pass-through and flexible

Fixed fully-inclusive. One p/kWh rate covers everything. Easiest to budget; a small premium bakes in the supplier's risk on non-commodity costs.
Fixed with pass-through. The wholesale element is fixed; DUoS/TNUoS/BSUoS pass through at cost. Cheaper commodity price, some bill volatility.
Flexible / basket. The wholesale element is bought in tranches across the term. Suits larger sites (typically 5 GWh+) with someone actively watching the market.

MOP, DC and DA — the invisible contracts

HH sites carry three separate service contracts: a Meter Operator (MOP), a Data Collector (DC) and a Data Aggregator (DA). These are usually rolled into the supply contract by default, which is convenient but rarely the cheapest. We benchmark them independently at renewal and switch where the numbers work — the meter stays put, the service just gets cheaper.

The three levers that matter most

Timing. Wholesale prices swing 10–20% inside a normal quarter. We watch your renewal window and quote when the curve is soft.
Load shape. Suppliers hate spiky demand. Trimming your peak with load-shifting or on-site generation improves every future quote.
Availability (kVA). The Availability Charge is often the second-biggest line after commodity. See our kVA reduction service.

What we need to quote you

A signed Letter of Authority, your MPAN and — ideally — a recent bill. We pull the last 12 months of HH data from your DC directly, model your load, and go to the market with the whole story rather than a headline annual figure.

Ready to compare?

Five-minute quote. Whole-of-market search. Nothing to sign until you accept a deal.

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