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Rank 1
December 19, 2023

A debate on marginal pricing and incentives to move energy usage to weekday off peak times

  • December 19, 2023
  • 31 replies
  • 1015 views

Updated on 06/03/25 by Ben_OVO

Our Power Move peak times have changed to 5pm - 7pm weekdays. If you hit the saving targets you’ll be entered into a prize draw with a chance of winning some great prizes (the top prize is a year’s free energy!). You can learn more and sign up here, and visit our FAQ’s page here.

 

Here’s a helpful Forum topic where our community have shared ideas around hitting Power Move targets:

 

 

 

 

 

Interesting we signed for Power Move a few months ago in the nice weather. Now we are in Winter mode and turned off almost everything in October & November, trying not to cook between 4-7. Yet average peak time electricity use was 20.72%. So didn’t hit the Power Move target of 13.5% or less.

So difficult to achieve 😢 

Are we the only ones.

 

We have been struggling to achieve it too. We have a Smart Smart meter and use the Bright app. Between 4 and 7pm we were using 0.2kWh per hour but that was too high - coming out at 20%. I realised that the GCH boiler pump was using about half of that, so we have changed the heating so it comes on in the afternoon and it goes off just before 4pm and then comes back for an hour just after 7pm.

There are 2 of us mostly working from home, we mostly batch cook already, hardly ever use the oven (except for Pizza Friday every two weeks, which has become Pizza Saturday), use a slow cooker during the day a lot and reheat using the microwave within 4-7pm. We have solar panels so we try and use that energy when we produce it as we get a piddling amount for selling it; far lower than it costs to buy electricity. That seems to count against us as we are not high users so our total percentage is pretty low, usually around 4KWh per day in winter. 

Our learnings - by changing the heating settings we are going to hit the target this month for the first time. I like a challenge so have been thinking of everything we can do, like boiling the kettle before 4pm and filling a thermos. It does feel a bit “make do and mend” like WW2 but I’m not bored of it yet… 

It does seem to us that the only way to hit the target is to be a higher user earlier or later in the day. So the washing machine is going on a little more often and the dehumidifier to dry the washing. We used to be really parsimonious but that doesn’t pay on this scheme!

I used our fairly modern oven at the weekend to make a cake (30 mins) and two trays of mince pies (50 mins). We used nearly 8kW that day! Be warned… the oven is a HUGE user. The single biggest change you can make is to reduce your oven usage at any time of the day!

I’ve included some links below to some handy pages on our website that give tips on understanding your usage and reducing it 👇

 

https://www.ovoenergy.com/help/article/how-we-show-your-energy-use

https://www.ovoenergy.com/guides/how-to-save-money-on-your-energy-bills

 

For more energy saving advice, i’d recommend a Google search: ‘[name of local/council area] energy saving advice’. You’ll find that many local councils offer free energy saving tips, links to grants and help with green tech / energy saving kit installation. There are also many organisations and charities that offer this sort of assistance.

 

31 replies

Peter E
Super User
Super User
December 22, 2023

Yes. Ovo’s Power Move is a small step into the wholesale market with no risk. If you know what you are doing and can avoid peak prices then Octopus Agile does work well for those who can be flexible with their demand.

Reducing my yearly fossil fuel usage with an EV (-900 litres petrol), A2AHP (-8,700 kWh gas) and Timed Immersion heater (-1,500 kWh gas)
Peter E
Super User
Super User
December 22, 2023

After my piece above about Marginal Pricing above I found a very good source of information on that and what could be used to replace what is now considered to be a broken system of pricing electricity. It comes from a company called Squeaky and they are all (mostly) quick reads of a few minutes. You can get the background on Marginal Pricing by scrolling down to the March 2, 2023 article and go from there.

 

https://www.squeaky.energy/blog

 

Peter

 

 

Reducing my yearly fossil fuel usage with an EV (-900 litres petrol), A2AHP (-8,700 kWh gas) and Timed Immersion heater (-1,500 kWh gas)
Rank 2
December 28, 2023

Sometimes l find it hard as well. l did hit target for the odd hours that seems to be easier. but during the week is harder. l do try using different appliances either early on in day. or later after seven. their is just the two of us. it did say l might be on track to hit target next month. but we have to wait and see.

Tim_OVO
OVO Staff
OVO Forum Legend
December 28, 2023

Great debate this, as promised, made into a new thread!

Carbon neutral - we need a community to get there! My green tech: Aclara SGM 1411-B smart meter, Chameleon IHD6
BPLightlog
Super User
Super User
December 28, 2023

I think that once all the ‘tech’ is in place, it will be easier for anyone wanting to use a variable or ‘time of use’ (ToU) tariff. 
The general overall pricing of the wholesale market does need a review but as I’ve mentioned elsewhere, we use the Agile tariff and our solar PV /battery control can choose its own ‘best’ slots for pricing meaning that during our last charging cycle, our average cost per kWh was 13.9p and had very low carbon emissions. 
Talking this through with a number of people, they expressed concern as some headline costs per kWh are 40 - 60p but that’s the whole point. During those highest costed times, the grid is often more polluting and so if there is a good degree of automation for the newer technologies, I think many more would be encouraged to move towards ToU, help reduce emissions and save money too

Bring me Sunshine ~ E&E {Solar PV, Battery Storage, Hybrid EV, ASHP and Home Assistant automation}
Rank 2
December 28, 2023

I actually use very little electricity often only 0.3 half hourly. If for some reason I haven

t been able to drop it during peak times which isn’t often I boil a couple of dull kettles or at 8pm put the weekly wash on & that allows me to reach the goal. I have found that although its supposed to be 4 - 7, its really 3.30 - 7.30

Jeffus
Rank 20
Rank 20
December 28, 2023

The end game may need more control like we see with Octopus Intelligent and OVO Anytime or the load control features in our smart meter. Here there is a level of central control either via individual suppliers or ultimately country wide.

The danger with Agile is you reach a tipping point at some individual sub stations or nodes where they get overloaded with customers with their own  tech all competing for cheap slots. 

We are not there yet, but we already have individual substations where peak load is overnight due to home battery and EV concentration in relatively affuent households. This then potentially hits an infrastructure limit when the next household asks to install an EV charger.

I find it difficult to judge how quickly things will move. Circa 4% of households have solar and some of these will be very small setups on new builds or poorly oriented panels. It is difficult to know how many homes will actually have home batteries in say 10 years, a couple of percent? A lot more? How many homes will have EV setups where the EV battery can be used to power the home in 10 years?

Are there any plans to mandate solar, batteries in new homes?

It is going to be an interesting couple of decades. 

Rank 2
December 28, 2023

Firstly, Merry Christmas and Happy New Year to all forum members.

Lots of great views on this topic which could run and run. Simplistically, however this scheme is not a "one size fits all" opportunity although it warms the cockles that all demographics are trying! Even if you fail in hitting the target you are actually making a contribution so you can pat yourselves on the back for that!

As far as I have observed most comments about non-achievability seem to suffer the same problem of  already low off peak usage, either due to the house being empty through work commitment or by having supplementary power sources as mentioned in many posts. I would be very interested in some statistics showing just how much peak time energy has been switched from the inception of these schemes and just how many customers have hit target. Are OVO going to publish these figures?

However, I am more concerned with the January  OFGEM price cap rise which has wiped out any rewards I have gained from Power Move in the past three months! Even more concerned that the cap will continue to rise unless the Gaza situation is resolved pretty sharply.

Firedog
Super User
Super User
December 28, 2023

I have found that although its supposed to be 4 - 7, its really 3.30 - 7.30

 

The timings are pretty precise, governed by the internal clock in your meter*. The quantity of energy passing through the meter is counted, on modern meters in watt-hours, and every 30 minutes, the sum is transmitted to DCC. Once a day, OVO collects the 48 half-hourly figures for each smart meter and records them on the appropriate account. So for Power Move, the quantity measured is exactly what passed through your meter between 16:00:00.000 and 18:59:99.999. Anything before or after that period isn’t included.

What makes you think ‘it’s really 3.30 - 7.30’?
  


*   Most meters these days have two clocks. One works while there is power to the meter, and it just uses the frequency of the supply to keep time. Electricity distributors work very hard to make sure that the frequency is 50 cycles per second (50 Hz) all the time. The other is the same sort of quartz crystal clock that you probably have hanging on your kitchen wall. This one just makes sure the meter knows what time it is when the power comes back on. 

Noel | I have no official status; I'm just a volunteer who comes here to help other customers. My gear: Aclara SGM 1416-B Electricity-only E7 meter; Chameleon IHD3-PPMID-AAA | It may look as if I know what I’m talking about, but don’t let that fool you. |
Firedog
Super User
Super User
December 28, 2023

Even more concerned that the cap will continue to rise unless the Gaza situation is resolved pretty sharply.

 

That may well happen, but it’s notoriously difficult to make predictions, especially about the future. One company that tries, usually quite successfully, is Cornwall Insights. You can see their latest price cap forecast (just over a week old) here: Predictions and Insights into the Default Tariff Cap (cornwall-insight.com) 

 

Noel | I have no official status; I'm just a volunteer who comes here to help other customers. My gear: Aclara SGM 1416-B Electricity-only E7 meter; Chameleon IHD3-PPMID-AAA | It may look as if I know what I’m talking about, but don’t let that fool you. |