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…
Slough, Berkshire
Half-hourly electricity and metering in Slough
We help Slough businesses with half-hourly metered electricity – from renewing a contract before it runs out to checking capacity, network charges and meter data. Independent, UK-wide and focused on half-hourly sites.
Call 07565 147 170 or send us a bill for a free check.
Half-hourly electricity for Slough businesses
Home to Slough Trading Estate, one of Europe's largest industrial estates in single ownership, Slough has a dense mix of manufacturing, warehousing and corporate offices. The town has become a major data centre location, drawn by its position on the M4 close to Heathrow and London. Logistics firms, retail, Wexham Park Hospital and many company headquarters make it one of the busiest commercial centres in the Thames Valley.
Whether you run tech firms, offices, distribution centres and factories, 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
The local distribution network in Slough belongs to Scottish and Southern Electricity Networks (SSEN) (Southern area). You can confirm it from your bill: the bottom line of your MPAN starts with the distributor ID 20.
DUoS unit charges here follow red, amber and green time bands published by Scottish and Southern Electricity Networks (SSEN) each year. We line those bands up against your half-hourly data so you can see what your peak-time use really costs.
The capacity charge is easy to overlook. It is based on the kVA your network operator has reserved for you, not on what you use, so a twelve-month look at your half-hourly maximum demand often shows whether your Agreed Supply Capacity still fits.
Support for half-hourly sites in Slough
Most of our work with local businesses falls into four jobs:
- 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.
- Review your Agreed Supply Capacity and red-band use against twelve months of half-hourly data.
We work with businesses right across Slough, including sites on and around Slough Trading Estate.
Every recommendation comes with the numbers behind it, drawn from your own half-hourly data, so you can see why it makes sense before you agree to anything.
MHHS and Slough businesses
Market-wide Half-Hourly Settlement is bringing smaller Slough sites onto half-hourly settlement too, with every meter due to move by May 2027. Sites that are already half-hourly see new names for their metering and data agents and more reliance on actual readings. Our guide to understanding MHHS explains what to check.
Before your next renewal, it is worth confirming three things: your meter communicates every day, your metering and data agents are appointed and qualified, and your contract terms say how settlement changes affect your price.
Get a free half-hourly quote in Slough
There is no cost and no obligation. Tell us about your site or call 07565 147 170, and if we cannot find a better option than the one you have, we will say so.
Our services for businesses in Slough
- 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 Slough
We help businesses across Slough and nearby, including:
- Langley
- Cippenham
- Burnham
- Farnham Royal
- Stoke Poges
- Datchet
- Eton
- Windsor
- Colnbrook
- Iver
Nearby towns and cities
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 Slough: common questions
Who is the electricity network operator in Slough?
Scottish and Southern Electricity Networks (SSEN) runs the local distribution network in Slough (Southern area, distributor ID 20). 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 Slough?
Scottish and Southern Electricity Networks (SSEN) publishes the red, amber and green times for the Southern area in its annual charging statement. Red is the weekday late-afternoon and early-evening peak. We can show you how much of your own use falls in it.
Does my Slough 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 Slough 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.
Which areas around Slough do you cover?
We help businesses across Slough and nearby, including Langley, Cippenham, Burnham and Farnham Royal. We work UK-wide too, so we can look after other sites in your portfolio wherever they are.
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.
Get a half-hourly quote for your Slough 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.
