MHHS explained: what market-wide half-hourly settlement means for your business
Market-wide Half-Hourly Settlement is moving every meter in Great Britain to half-hourly settlement. Here are the key dates, the new MSA, ADS and SDS roles, and a…
Harlow, Essex
Half-hourly electricity and metering in Harlow
If your Harlow site is on a half-hourly supply, we can compare contracts from UK suppliers, check every charge on your bill and make sure your meter and data are ready for MHHS – free, and with no obligation.
Call 07565 147 170 or send us a bill for a free check.
Harlow businesses and half-hourly supplies
Harlow was one of the first post-war new towns, laid out with dedicated industrial areas such as Templefields and The Pinnacles. These now host manufacturing, science, logistics and trade businesses, helped by quick access to the M11 and Stansted Airport. The Harlow Enterprise Zone focuses on science and technology, while the Princess Alexandra Hospital and a sizeable town-centre retail offer add further large sites.
Whether you run factories, warehouses, distribution centres and tech firms, a half-hourly bill rewards knowing exactly when your site uses power. The same number of kWh can cost noticeably more if it lands in the network’s busiest hours, or if your reserved capacity is bigger than you need.
Your local electricity network
Harlow is in the Eastern distribution area run by UK Power Networks. If your site is supplied from that network, the bottom line of the MPAN on your bill starts with 10.
The network operator sets Distribution Use of System (DUoS) charges in time bands. In this area the red band – the most expensive – runs 16:00–19:00 on weekdays, according to its published charging statement. Amber covers the rest of the working day and green covers nights and weekends.
Half-hourly sites also pay a capacity charge for their Agreed Supply Capacity. If it was set years ago it may no longer match how the site runs – too high and you pay for capacity you never use, too low and excess capacity charges appear. Changes go through UK Power Networks.
How we help Harlow sites
Our work is practical and starts with your bill. Typically we:
- Review your Agreed Supply Capacity and red-band use against twelve months of half-hourly data.
- Make sure your metering and data service contracts are in place and ready for MHHS.
- Compare half-hourly contracts from UK suppliers well before your renewal date, so you never fall onto out-of-contract rates.
- Check your bills line by line: energy rates, DUoS bands, capacity and excess capacity, reactive power, TNUoS, Climate Change Levy and VAT.
Whether your site is around Templefields, The Pinnacles and Harlow Enterprise Zone or elsewhere in Harlow, the process is the same and it starts with a bill.
We explain every option in plain English, show the figures from your own half-hourly data and tell you our fee, so the decision is always yours.
Market-wide Half-Hourly Settlement in Harlow
Every electricity meter in Great Britain is moving to half-hourly settlement under Elexon’s MHHS programme. Suppliers began migrating meters on 22 October 2025 and the deadline is May 2027. For Harlow businesses that were not half-hourly before, prices will increasingly reflect when you use power, not just how much. Our guide to understanding MHHS explains what to check.
Three quick checks are worth doing now: that your meter is sending actual readings rather than estimates, that your metering and data service contracts are current, and that your supply contract explains how industry and settlement changes are passed on.
Get a free half-hourly quote in Harlow
Send us a recent bill or tell us your postcode and contract end date. We will check your charges, compare offers from UK suppliers and come back with plain-English options, including our fee. Call 07565 147 170 or ask for a free quote.
Our services for businesses in Harlow
- Half-Hourly Electricity Contracts Compare half-hourly electricity contracts from a range of UK suppliers, with fixed, pass-through and flexible options explained clearly so you can choose with confidence.
- Contract Renewals & Switching Renew or switch your half-hourly electricity contract on time, avoid costly out-of-contract rates, and keep your notices, meter agents and data in order.
- Half-Hourly Bill Checking Line-by-line checks of your half-hourly electricity bills, from DUoS bands and capacity charges to CCL and VAT, with clear help raising disputes when something is wrong.
- Half-Hourly Meter Upgrades Find out whether your site needs a half-hourly, AMR or CT meter, then let us arrange the upgrade and chase communication faults until data flows again.
- Metering & Data Service Contracts Keep your half-hourly bills based on real data by appointing the right metering and data agents, including the MOP-to-MSA and HHDC-to-ADS changes under MHHS.
- MHHS Readiness Review Get your sites ready for Market-wide Half-Hourly Settlement with a practical check of MPAN data, meter communications, agent appointments and contract terms.
- Supply Capacity (kVA) Reviews Check whether your Agreed Supply Capacity fits how your site really uses power, so you are not paying for unused kVA or facing excess capacity charges.
- Load Profile & DUoS Analysis Turn your half-hourly data into plain-English reports that show your base load, out-of-hours waste and red-band peaks, and where shifting loads could reduce costs.
- Multi-Site Energy Management Bring every half-hourly MPAN in your portfolio under control, with aligned end dates, group contracts, consolidated billing and clear reporting across all your sites.
- Renewable Electricity Contracts Compare REGO-backed renewable electricity contracts for half-hourly sites, with honest advice on what green tariffs mean, on-site solar and export, and PPAs for larger users.
Areas we cover around Harlow
We help businesses across Harlow and nearby, including:
- Old Harlow
- Potter Street
- Church Langley
- Sawbridgeworth
- Epping
- Roydon
- Nazeing
- Matching
- North Weald Bassett
- Bishop's Stortford
Nearby towns and cities
- Half-hourly electricity in Chelmsford 16 miles
- Half-hourly electricity in Stevenage 16 miles
- Half-hourly electricity in St Albans 19 miles
- Half-hourly electricity in Basildon 21 miles
- Half-hourly electricity in Watford 23 miles
- Half-hourly electricity in Luton 24 miles
What our customers say
All reviews★★★★★As a busy manufacturing business in Manchester, managing our electricity costs is essential. Half Hourly Electricity made the whole process simple and stress-free, helping us find a competitive energy deal suited to our high electricity usage. Their team was professional, knowledgeable and helpful throughout. We’re extremely pleased with the service and would highly recommend them to other manufacturing businesses looking to manage their energy costs.
★★★★★As a data centre business based in Glasgow, having a reliable and cost-effective electricity supply is crucial to our operations. Half Hourly Electricity helped us secure a competitive energy deal tailored to our high electricity consumption and 24/7 operational needs. Their team was professional, knowledgeable and made the entire process straightforward and hassle-free. We’re extremely satisfied with the service and would highly recommend Half Hourly Electricity to other data centre businesses looking to reduce their energy costs.
★★★★★Running a busy nail salon in Hackney, London, means keeping our electricity costs under control while providing a comfortable environment for our clients. Half Hourly Electricity made finding a competitive energy deal simple and stress-free. Their team was friendly, professional and helped us find a suitable electricity plan for our salon’s needs. The whole process was smooth and hassle-free, and we’re very pleased with the service. We would highly recommend Half Hourly Electricity to other beauty salons and small businesses looking to save on their energy bills.
Half-hourly electricity in Harlow: common questions
Who is the electricity network operator in Harlow?
UK Power Networks runs the local distribution network in Harlow (Eastern area, distributor ID 10). It sets the DUoS time bands and capacity charges on half-hourly bills, and handles requests to change your Agreed Supply Capacity.
When is the DUoS red band in Harlow?
In the Eastern area the red band runs 16:00–19:00, Monday to Friday, according to the network operator’s charging statement. Electricity used then carries the highest network charges, so moving flexible loads out of that window can lower costs.
Does my Harlow business need a half-hourly meter?
If your site’s maximum demand goes over 100 kW in any half hour, it must be half-hourly metered and settled. Smaller sites are also moving to half-hourly settlement under MHHS by May 2027. If the top line of your MPAN starts with 00, you are already half-hourly.
Can you help if our Harlow site is out of contract?
Yes. Out-of-contract and deemed rates are usually much higher than contract prices. Send us a recent bill and we can ask UK suppliers for quotes quickly, then handle the switch and your metering and data contracts.
What does a free bill check include?
We compare every line of your bill with your contract and half-hourly data: energy rates, DUoS bands, capacity and excess capacity, reactive power, TNUoS, Climate Change Levy and VAT. You get a plain-English summary of anything wrong or worth changing.
Which areas around Harlow do you cover?
We help businesses across Harlow and nearby, including Old Harlow, Potter Street, Church Langley and Sawbridgeworth. We work UK-wide too, so we can look after other sites in your portfolio wherever they are.
Get a half-hourly quote for your Harlow site
Tell us your postcode and contract end date, or send a recent bill. We will check your charges and compare contracts from UK suppliers. Free, and no obligation.
