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Half Hourly Meters Explained

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Switching Tariffs? Looking for a New Half Hourly Meter? We Have It Covered

Whether you’re looking for a half-hourly electricity meter or a new tariff, you’re in the right place. With some basic information about your requirements, we’ll find the right solution for you. For high-consumption business electricity customers, we offer bespoke tariffs that suit your energy needs based on how you run your business. 

Our team of experts are ready to discuss your usage and business needs with you. They will then present you with our available pricing options to find the best solution for you and your business.

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How Much Will I Pay on a Half Hourly Meter?

To find the best pricing solutions for you, our team will ask a few questions about your business based on your unique setup. We will then provide you with bespoke quotes from a wide range of trusted electricity suppliers.

All you need is your bill and our dedicated half hourly team will talk you through your charges to make the best informed decision. 

Don't have a bill? Not to worry, our team are on hand to explain the different charges based on your energy requirements.

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What Is a Half Hourly Meter?

A Half hourly meter, also known as a HH or 00 meter, is a unique type of metering system which utilises an automatic meter reading technology to provide accurate consumption data every half hour.

Many high-usage businesses prefer half hourly meters to avoid estimated billing. With a high business electricity usage, facing overcharges or back-billing due to estimated readings can have a real impact on your electricity costs.


How Do I Know If I Have a Half Hourly Meter?

It is a legal requirement for large business electricity users to have a half hourly meter installed. The current laws state that if your business has a regular peak load usage of electricity above 100 kW you will be required to install a half hourly meter.

You can check if you already have a half hourly meter installed with a recent bill. You should see a box that begins with the letter 'S'. If your numbers start with a 00, it's a half hourly meter. If you don't have a bill to hand there is no need to worry, our team can check this for you.

Data & Half Hourly Settlement (HHS)

The advantage for businesses using half hourly meters is that it provides much more data about energy consumption.

By using this data, you can save money in at least 3 ways:

  • This makes comparing business electricity tariffs much more accurate as you’ll have more accurate information about when you use power. For example, your data may expose larger energy usage during off-peak times. This means an Economy 7 or Economy 10 tariff may be more suitable.
  • Once you know when you’re spending the most on electricity, you may find you’re able to shift certain energy-intensive processes to when rates are lower.
  • If you can’t shift production to off-peak times from peak times, you can consider looking into implementing energy efficiency programs to offset some of the cost.

Getting Quotes & Comparing Prices for Half Hourly Contracts

As half hourly contracts can have different costs associated with them, it is recommended to get the best quotes for your business early. This allows you to be armed with the best recommendations to understand market changes, volatility, and ensure you're saving money more efficiently and earlier.

Currently, if your business has a regular peak load usage of electricity above 100 kW you will be required by law to install a half-hourly meter. Typical businesses include factories, large warehouses, department stores, breweries, supermarkets, large offices, and other large-scale industrial and agricultural enterprises.

Since 2015 all new and renewing contracts for profile classes 05-08 have been required to switch to half-hourly settlement as well as laid out in P272.

To find the best solution for you, simply answer a few questions about your business and out dedicated team will be in touch to find the right pricing options for you.

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Half-Hourly Meter Readings - Do You Still Need to Take Meter Readings?

In short, no. Half hourly meters are normally connected to a fixed phone line or increasingly, mobile phone connections and send the data directly to your energy supplier.

Most suppliers start your data at 0 on the day you switch and can provide you with how much data you have used to show your peak time electricity usage. 

You will still be required to have a Data Collector (DC) and a Meter Operator (MOP) – both of which can be provided by your electricity company and included within the price. 

Alternatively, you can choose your own DC and Meter Operator which may help reduce your costs for you. 

Contact our energy experts to see which solution is the best for you and your business within seconds.

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Half Hourly Meter FAQs

  • Am I Required to Get an Half Hourly Meter?

    If your business at any point has a peak load electricity usage above 100 kW or renewing your contract and your meter is in profile class 05-08.

    A HH meter offers great benefits to companies across a variety of industries. With meter readings send every half hour, it allows you to take control of consumption and reduce energy bills.

  • What About P272 Regulation?

    P272 was brought in by Ofgem and now makes it mandatory for all new contracts under profile class 05-08 to get half-hourly meters installed. This applies to both brand-new contracts and contract renewals and came into effect on November 5th, 2015.

  • What Does a HH Meter Operator (Mop) Do?

    A HH meter operator is basically responsible for the installation and maintenance of your meter. They also make sure the communications equipment is able to send the data to the data collector without any issues.

    This can be done either by your energy supplier or by an accredited third party (often cheaper). However, you must have a contract in place for your supplier to supply you with electricity.

  • What Does a Half Hourly (HH) Data Collector (DC) Do?

    As the name implies a data collector, collects the data, and passes it over to your energy supplier. While this is done automatically it’s still important and it can be provided either by your energy company or an accredited third party.

    Unlike, an MOP you do need to have a contract in place with DC before getting your power, but you do need one to get access to all your data.

  • How Do I Check if I Have a Half Hourly Meter Installed?

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    All you have to do is check a previous energy bill and look at the S number. If the number in the top left (just to the right of the S) is 00 then you have a half-hourly meter. This numbering system is also why HH meters are sometimes called 00 meters.

    Businesses with advanced automatic meter reading (AMR) meters in the profile class 05, 06, 07 or 08 should also be able to operate under a half-hour settlement. If unsure ask your supplier and/or your MOP.

  • Can I Switch My Tariff Plan?

    Yes, we can help you switch suppliers. In most cases, your new energy supplier will adopt your half-hourly meter. If your gas or electricity meter needs to be replaced, your new energy supplier will do this free of charge.

    To get started fill in the quote form to get put in touch with the experts.

  • CT Meters Vs WC Meters: What's The Difference?

    The difference between a CT Meter and a WC meter is how the current is measured.

    A CT Meter's current is measured through a transformer fitted to the connection cable. CT stands for current transformer, which is essentially a copper coil wrapped around the cable to pick up the current running through it.

    CT Meters are installed on connection loads greater than 100 Amps.

    A WC Meter's current is measured through the meter box itself. WC stands for whole current. WC Meters are usually intended for smaller businesses and domestic usage.

    CT Meters and WC Meters are typically classed as Half-Hourly Meters.

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