Updated on 27/05/25 by Emmanuelle_OVO:
We’ll soon be ending our support for some of our meters.
If you have a meter that’s affected, we’ll be in touch to arrange a meter and tariff upgrade to keep your heating and hot water working.
Or contact us now to arrange your upgrade.
Total Heating with Total Control
If your home is all-electric and you live in the north of Scotland, you could be on Total Heating with Total Control (THTC). It works best with electric storage heaters rather than gas, oil or wet electric heating.
With THTC you get two meters. One is for off-peak energy you use and the other records all your normal usage like lights, kitchen appliances and sockets. Just so you know, energy used on the normal meter costs more than our standard rate.
What are the times for THTC?
The specific times for the off-peak rate depends on the weather forecast for your area, but you'll get between 5 and 12 hours each day. THTC works by storing up heat in your storage heaters and hot water tank during the off-peak times.
Other electric heaters and heated appliances can also be used on the cheaper rate. The off-peak rate is available 24 hours a day for panel heaters, focal point fires, bathroom heaters, towel rails, the hot water boost and even electric showers. You'll need to get an electrician to make sure all those appliances are connected to your cheaper-rate meter if you're not sure.
Hey @Wheatly,
Got advice confirmed by one of our experts:
If they mean the heating meter of THTC- (always worth checking first the customer still actually has things like storage heaters and it's not just that there's nothing running from that meter anymore.)
We don't have stock of THTC meters, so unfortunately, there isn’t anything we can do until we can swap it out to smart domestic economy or E10.
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