London apartment with "Economy 9" electric (yes 9)

NathanE

My apartment has an EDF Economy 9 tariff. Apparently this type of tariff is quite rare and seemingly unique to EDF.

It is similar to Economy 7 and 10 except that you get 3 periods of heating throughout the day, of shorter lengths.

Another interesting point to note is that my electricity meter here has two outputs, one for heating and one for everything else. And it seems that the benefits of Economy 9's tariff during the 3 allocated periods per day only apply to the heating circuit.

The EDF website says this:

" 2 MPAN Economy 9 – This type of meter provides nine hours of cheaper electricity
specifically for room and water heating at various times of the day on the off-peak rate. We
charge for electricity for all purposes (other than room and water heating) at the relevant
day or off-peak rate."

I am concerned the EDF tariff is not competitive.

This is interesting because my understanding is that E7 and E10, the allocated time periods apply to ALL circuits e.g. even your TV and washing machine.

Please can somebody confirm whether that is the case?

Not sure what is my best course of action to optimise my energy usage. :question:

lstar337

Best course of action is to have both meters removed (along with the second connection), and ask for a standard E7 meter to be fitted to the first connection.

As you say, these legacy systems are rarely competitive, and you will find it (mostly) impossible to switch elsewhere.

Talk to EDF and find out what the options/costs are going to be.

Richie-from-the-Boro

Simple, there are 2 ways to economise. E7 is the cheap end E10 is the higher priced luxury end - you choose. The second way is to put your expected kW per annum into at least one comparison site and see who is cheapest for your area code.

E9 gives 1 night period and 2 not 3 periods of heating throughout the day, and yes all leccy not just heating & water in the period is at cheaper rate. The way to optimise is to put enough cheaper rate hot water & room heat into the dwelling as you will need to suit your lifestyle, example retired and home all day or working and home after 6pm only.

E7 rather than E10 ? then the lifestyle !

Best of luck.

Bark01

EDF E9 H&P is basically an EC7 meter with an additional related Heating MPAN. There are 7 hours of off peak electricity + 9 hours of heating available each day.

EDF E9 prices are below (inc VAT), they are not that uncompetitive.

18.90p Standing charge
16.57p For non-heating use between 6:30 am and 11:30 pm
6.42p For non-heating at all other times
6.42p For heating only for 5 hours + 2 hours between 8pm and 7:30am and 2 hours between 1pm and 4pm

It’ll be cheaper than being on EDF energy’s Standard Ec7 rate, however comparing it to EDFs cheapest EC7 rate for London is more complex:

The cheapest EC7 EDF London rates are:
18.90p Standing charge
16.57p Day
5.99p Night

All the unit rates are cheaper but you have to factor in that on E9 H&P you get 85% more off peak hours (taking into account the heating and off peak hours overlap, other wise its 129% more). It could be beneficial for you to stay on E9 H&P if you utilise off peak/heating consumption.

lstar337

Bark01 wrote: »

EDF E9 H&P is basically an EC7 meter with an additional related Heating MPAN. There are 7 hours of off peak electricity + 9 hours of heating available each day.

EDF E9 prices are below (inc VAT), they are not that uncompetitive.

18.90p Standing charge
16.57p For non-heating use between 6:30 am and 11:30 pm
6.42p For non-heating at all other times
6.42p For heating only for 5 hours + 2 hours between 8pm and 7:30am and 2 hours between 1pm and 4pm

It’ll be cheaper than being on EDF energy’s Standard Ec7 rate, however comparing it to EDFs cheapest EC7 rate for London is more complex:

The cheapest EC7 EDF London rates are:
18.90p Standing charge
16.57p Day
5.99p Night

All the unit rates are cheaper but you have to factor in that on E9 H&P you get 85% more off peak hours (taking into account the heating and off peak hours overlap, other wise its 129% more). It could be beneficial for you to stay on E9 H&P if you utilise off peak/heating consumption.

Given what Bark01 has posted, I think my answer above is too simplistic.

Go with Bark01's advice and do some calculations to see how it might cost you, factoring in your own comfort requirements.

Those E9 rates do look quite good, better than I would have imagined!

macman

Assuming that you have newly occupied this property, I'd leave the existing metering in place through a full winter, establish your pattern of consumption on each register, and then decide whether to change to E7 metering.

footyguy

NathanE wrote: »

My apartment has an EDF Economy 9 tariff. Apparently this type of tariff is quite rare and seemingly unique to EDF.

It is similar to Economy 7 and 10 except that you get 3 periods of heating throughout the day, of shorter lengths.

Another interesting point to note is that my electricity meter here has two outputs, one for heating and one for everything else. And it seems that the benefits of Economy 9's tariff during the 3 allocated periods per day only apply to the heating circuit.

The EDF website says this:

" 2 MPAN Economy 9 – This type of meter provides nine hours of cheaper electricity
specifically for room and water heating at various times of the day on the off-peak rate. We
charge for electricity for all purposes (other than room and water heating) at the relevant
day or off-peak rate."

I am concerned the EDF tariff is not competitive.

This is interesting because my understanding is that E7 and E10, the allocated time periods apply to ALL circuits e.g. even your TV and washing machine.

Please can somebody confirm whether that is the case?

Not sure what is my best course of action to optimise my energy usage. :question:

As it's unique, I'm not sure what you are comparing it to when you suggest it is not competitive. :huh:

Do not attempt to switch supplier with this setup as it will invariably end in tears.

DREKLY

Hmm - Economy NINE sounds absolutely brilliant to me !
I didn't know such a tariff even existed, and I am with EDF
using economy 7, I'd stick with it personally, as it's so flexible.

stator

NathanE wrote: »

My apartment has an EDF Economy 9 tariff. Apparently this type of tariff is quite rare and seemingly unique to EDF.

It is similar to Economy 7 and 10 except that you get 3 periods of heating throughout the day, of shorter lengths.

Another interesting point to note is that my electricity meter here has two outputs, one for heating and one for everything else. And it seems that the benefits of Economy 9's tariff during the 3 allocated periods per day only apply to the heating circuit.

The EDF website says this:

" 2 MPAN Economy 9 – This type of meter provides nine hours of cheaper electricity
specifically for room and water heating at various times of the day on the off-peak rate. We
charge for electricity for all purposes (other than room and water heating) at the relevant
day or off-peak rate."

I am concerned the EDF tariff is not competitive.

This is interesting because my understanding is that E7 and E10, the allocated time periods apply to ALL circuits e.g. even your TV and washing machine.

Please can somebody confirm whether that is the case?

Not sure what is my best course of action to optimise my energy usage. :question:

I interpret what EDF have said to mean that during the off-peak periods you pay the cheaper rate for everything. During the peak periods you pay the higher rate for everything.
The reason for the different connections is because one of them is turned completely off when outside of the off-peak period. This allows for 'dumb' devices to be attached to meter without the need for additional timers. The classic example is the immersion heater, it would be wired to the off-peak only cables so that during peak periods it doesn't have any power at all.

Bark01

During the off peak hours everything is off peak, but during the peak hours at certain times the heating/hot water can be used at the off peak rates

The heating and hot water are run from a separate but related electrical circuit.

18.90p Standing charge
16.57p For non-heating use between 6:30 am and 11:30 pm
6.42p For non-heating at all other times
6.42p For heating only for 5 hours + 2 hours between 8pm and 7:30am and 2 hours between 1pm and 4pm