Your simple guide to Aclara smart meters in the UK

Your simple guide to Aclara smart meters in the UK
Published on 4 Apr 2026

Understanding your Aclara smart meter can help you stay in control of your energy usage and bills. This guide explains how Aclara smart meters work, how to read them, and how to handle common issues so your billing stays accurate.

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What is an Aclara smart meter?

Aclara smart meters are widely used in UK homes to automatically record and send your electricity and gas usage to your supplier. This helps ensure accurate billing and removes the need for frequent manual readings.

Common Aclara smart meter models

Two common models are the Aclara SGC 1311 and Aclara SGM1312. While their displays and buttons may differ slightly, both are designed to measure and transmit your energy usage. Many Aclara meters installed today are SMETS2 meters, meaning they should continue working even if you switch suppliers.

Why your Aclara smart meter should work reliably

Aclara smart meters, particularly SMETS2 models, connect through the national smart meter network1. This ensures they continue sending readings automatically and reduces the risk of losing functionality when switching suppliers.

How to read your Aclara smart meter

To read your Aclara smart meter, press the display button to cycle through the screens until you see your usage. Electricity readings are shown in kWh, while gas readings are shown in m³ or ft³. You only need to note the main numbers before any decimal point.

Common Aclara smart meter issues

Most Aclara smart meter issues are simple to understand.

What to do if your Aclara smart meter stops sending readings

If your smart meter is not sending readings, you may need to submit them manually to keep your bills accurate. Fuse Energy allows you to submit readings easily through the app, including uploading a photo or typing the reading for convenience. This ensures your billing reflects your actual usage.

Tariff eligibility

Some tariffs require a fully connected smart meter. EV tariffs and time-of-use tariffs rely on real-time usage data, so your meter must be online to access them. If your meter isn’t connected, you may need to resolve the issue or upgrade before switching to these tariffs.

Why Fuse Energy may be the better option

Managing your energy shouldn’t feel like a chore. With Fuse Energy, you get real-time, half-hourly usage data in the app and website if you have a connected smart meter, so you can see exactly how much you’re using and stay in control of your usage. Our 24/7 human support team is always on hand with fast response times of under 5 minutes whenever you need help. Click here to switch to Fuse Energy in as little as 3 minutes and find out about our mission by clicking here.

Frequently asked questions

What does a flashing red light on an Aclara smart meter mean?

It usually indicates energy is being used. Faster flashing means higher usage. You should always check what it means for your specific Aclara smart meter model as it may differ between models.

What should I do if my Aclara smart meter isn’t working?

Check the display and connection, then submit manual readings if needed while the issue is resolved. You should contact your supplier if this is the case.

How can I switch to Fuse Energy?

Switching to Fuse Energy is simple and can be done in as little as 3 minutes by completing the online onboarding process here.

References

  1. Data Communications Company. Operating Britain's secure smart meter network

Disclaimer

For the avoidance of doubt, this article is provided for informational purposes only and is not intended to constitute legal or financial advice. The author and/or Fuse Energy shall not be responsible for any losses arising out of any reliance on the information contained herein.

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