Best answer by Tim_OVO
Great question, but the answer is a bit complex
It sounds like your economy 7 meter has a '5th port', which used to connect to your storage heaters. These heaters would only turn on during the off peak times.
If the meter set up hasn't changed, the new heating would have the same limitation of only turning on at off peak.
Your suggestion is a valid one, we could fit a smart meter and adjust how it's wired up, so that any electrical appliance can turn on whenever. The smart meter can still be in economy 7, or not.
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