Have you checked out OVO Energy Tracker?

There's an app called "When To Plug In" that shows the carbon intensity of the UK's electricity generation. It shows when you should plug stuff in if you want to use the least carbon intense electricity.

Why OVO need the size of my house to “make OVO Energy tracker as accurate as possible”? Why can they not use my hourly/daily Smart meter readingS.

The Energy Tracker will compare your house to others of a similar size occupancy heating and other appliances etc to get a more accurate result. However it’s not  particularly accurate in my case, my heat pump heats my hot water yet the energy tracker tells me most of my gas use goes to heat water, which it impossible as my only gas appliance is the hob. I would only use it as a guide personally, and not expect too much more.

My SSE bills had a graph that showed last years usage for the billing period compared to this year. I can't find this on my OVO bill where can I find it? 

It is not on the bill its in your online account under compare to last year selection box

Yes @Clairesellars1 if you log in online you can see your energy usage 

https://account.ovoenergy.com/usage?datePeriod=monthly

If you choose to look by month or year you can get comparisons. If you look by day that doesn’t offer this facility

Found it. But there isn't any data for last year there, and it's combined gas and electric

Hey @Clairesellars1,

Have you recently migrated? 

If so, it may be that we haven’t received all of your historic usage information yet. 

My account states that the most electricity used daily is for heating, but I have not had any heating on for months - how does the smart meter know and/or differentiate what you are using your electricity for ?

Thanks

Hi @Julia H , from what you set in your homes profile, the system examines bursts of power used and tries to match them to appliances. It’s not always accurate and not to be relied upon but it’s meant as a general suggested guide.