I started this post so here's an update, I didn't change the meter in the house but I also have storage heaters in a commercial building next door so as a test I made the heaters "smart", although the garage is a single rate meter I treated it as a test for the house.
I've put a Sonoff TH15 and contactor at each heater and used node-red to control when the heaters are on and off based on temperature and time of day and it is working perfectly, it looks like I am saving almost 25% on power costs. I've also got a wind turbine feeding that building and I've got another device making use of excess generation but I've had it for about 10 years so it shouldn't be making a difference.
So I think the conclusion is that it is possible to use an Economy 7 meter and save money. I'm trying to get a time of use tariff at the moment but no-one is offering one for commercial connections at the moment.
As an aside next year we are building a new garage, covering it with PV, installing battery storage and puchasing electric vehicles, funny enough mostly funded by SP Energy Networks.
I have since made progress on this - here's my experience - and yes it is possible!
Because SP really don't want to get you off Comfort Plus cos it's a major money spinner for them and a rip-off for us you have to shame them to get them to do anything. Write a TrustPilot review and that gets them moving, you'll get a response next day. You actually get through to people who know stuff, are helpful and make things happen - rather than the useless online people who only have a script - a script that is wrong in most cases.
If you have a CP meter and storage heaters, the chances are you have a separate circuit for the heaters that gets activated by the CP meter. So all you need is an E7 meter that does the same - they exist, I just got them to install one. You may need an electrician to check out how your wiring works if you're not sure - I was sure as I've monitored our electricity fr years because of SP's incompetence.
So I now have access to all the tariffs on Uswitch etc, which will save me £500 pa. It is possible but you have to shame SP into doing it. How sad is that?
Great to read this thread. Just off the phone with SP and extremely frustrated.
I need to re-arrange my SP tariff. I see what they offer online, calculate and choose. I ring them up say want to change. We'll give you our best tariff they say. Ok I say fire away. It turns out their verbal "best" tariff is about £170 dearer than the one offered on their drop down list that I have chosen.
You'll need to speak to a broker to get that rate they say. So ring the Broker. Oh we don't do that kind of meter they say. You'll need to ring SP.............etc etc
When I rang SP back to say it's not right they advertise the CCPlus tariff options, knowing that CCplus doesn't come under the Broker remit. I asked about changing meters and was told couldn't do that due to the way they're wired. Can only change if it's faulty.
So thanks to all for sharing experiences. This one han't gone away yet SP! Have just finished one ombudsman complaint about SP. Looks like another on the way........
@Graham09 An electrician can explain it to you. The storage heaters can be connected to the house circuit and they will need a time switch to avoid them warming up during the day. That is assuming the whole house switches to cheap power at night.
Alternatively an E7 meter with two outlet wires is available. One supplies the house circuit, and the other is dedicated to the storage heaters and only comes on at night.
SP have both meters available.
Yes i have storage heaters and water cylinder from the old days my flat is 1960's
I just checked and my standard online tariff comfortplus white meter is way more expensive than any of the other tariffs
Complete madness it was supposed to be cheaper but the control rate is now more expensive than the night rate
Phoned Scottish Power complained about leaving me without leccie for 7 days so they have arranged to swap in an Economy 7 meter and take the old Horstmann Series K Telemeter out for free.
Then you can swap to another provider like Buld or Co-Op who are cheaper
These white meter tariffs mean you are locked to Scottish power until you have the meter changed and Bulb and Co-op accepted my switch then had to decline because of the meter and tariff i have been on for the last 15 years!
It used to be the cheapest tariff but time s change and the night rate 2 is cheaper than the control rate 3 so better off with Economoy 7 day night rates!!
Hope that helps
PS. You can blag a meter swap for free if you are nice to the UK helpdesk folks
If you get put through to India or Pakistan just hang up and redial or try during the day as the Davox dialler usually routes to the Uk call centres - at night it switches over calls to the useless Indian call centres who wont give you any help or leeway they just follow the script like robots and are about as helpful as a chocolate tampon!
Dont do what the call centre do and base things on ££££ saved
You need to take the day night and control rate and standing charge prices and stick them in a spreadsheet and do the calculations - I phoned their helpdesk and they quoted a completely more expensive tariff when you actually did the calculation
Its ridiculous that Scottish Power cannot calculate these things properly