Which energy suppliers currently offer economy 10

Pearcey107

I have recently discovered that my electric central heating system was designed to be run on economy 10, my current supplier, Ovo do not offer it at the moment. Does anyone know if any suppliers offer it at the moment?

EssexHebridean

@Scot_39 is on E10 I believe - but I can't recall who they are with. 

I think the more "traditional" suppliers often do - Scottish Power, EDF and British Gas perhaps - although that last comes with a caveat to beware if you also have a smart meter as currently I think they have issues with supporting complex metering and SMs.  And thinking about it, all of the above come with a warning about potentially woeful customer service... 

Scot_39

Sorry

I haven't tried for a few years to get other quotes for E10 - it was disheartening, phoning each one in turn, for a flat no, or region specific no.  I gave u after a few hours of only getting one quote.

iirc Scottish Power did quote me in my region of the ones I tried - but the rates were actually higher than EOn.

EDF tabulate prices still for it and others E20:20, white meter etc.

https://www.edfenergy.com/sites/default/files/dm1904_pl2_rate_card_builed_aw4_v3.pdf

I'm with EOnNext on Next Flex E10  - as a legacy customer of EOns old Heatwise - that was the old local EMEB solution for radio switched off-peak.

Not sure they quote it to new customers.

They don't even quote E10 to me if I ask for a quote on-line. And seem to remember a post a while back when someone was transferred off - and couldn't get back on - months later.

E10 operates differently I believe in some regions - on how it splits - the 10 hours off peak.

Its like E7 - time controlled by network operator - not suppliers.

So in another region it may be a simple solid 10 - like EDFs eco 20:20 mid week - in which case it's just like a longer version of E7.

And that's possibly another option for OP - E20:20 gives off peak all weekend as well.  Almost doubling the off peak period - if they will quote that to new customers.

In others - it may be split more like here in EM - in winter - midnight - 5am, aft 1-4pm and even 8-10pm - its great to my mind for my older lossy NSH - but comes at a much higher off-peak rate for the advantage of those 5 hrs than E7.  But cheaper than say £3K+ to fit HHRs to suit E7.

There are according to Ofgem figures c Sep 21 iirc - 0.5m+ on non E7 multirate tariffs like E10, E20:20 etc - so there is still a market.

Wonder what the OP has for heating and metering / wiring circuits - if was designed specifically for E10 - though. It may not be a simple tariff and meter switch - if meter and internal systems been modified too.

PS If OP or other MSErs have or have had any luck finding one to quote E10 to a new customer - be greatful if could post here.

macman

Only the original legacy suppliers still support E10, and they won't exactly publicise the fact. What's your region/DNO?
If you mean an electric boiler running wet rads, then I don't see how that is suitable for E10? Both E7 and E10 are intended for night storage heaters, which are by definition not 'central heating'.
Do you already have legacy E10 metering with 2 MPAN's?

Scot_39

Ofgem imposed no requirements on the new smaller suppliers to support legacy tariffs like E10 etc.

So of course none of them did.

Pearcey107

I’m in Birmingham. It’s a water heating system powering rads, not a boiler as such. It’s designed for the water to be heated overnight, but I have no control at my end. I’ve asked Ovo to look into it, as my kw/hr usage is spiking during the day ( when the hearing is not in use) but they seem to understand the system. I’m waiting for a callback. Currently on E7, I’ve contacted British Gas, Eon & EDF, all say no. 

Thanks for your comments 

macman

Never heard of such a system tbh and don't understand how it might work. 
I don't think it's possible to revert to a legacy system such as E10, as you've discovered. The pre-privatisation supplier would have been MEB, now under E.ON.

Scot_39

Electric Wet Radiator systems were not uncommon, and many still exist today.

There are even 3 phase ones for larger domestic and small retail/ industrial.

And there are even combi style systems -  that like gas - do away with the hot water tank.  But as one marketed by F* - buyer beware.

As SR electric 3x the cost of gas - and e7 off peak typically 1.5x and e10 off peak for me just over 2x the cost - all potentially cost a lot to run.  ( but might save on servicing costs etc)

I guess an ASHP would ideally replace them today to cut energy use via COP ratio energy boosting.  The problem is in at least one cases manual, these are high temp stores - 75-85C - much higher than current recommended 60C for gas combi flow efficiency - and easily over twice level for good ashp cop - so back at radiator upgrades etc.

These heat insulated tank - generally much larger than normal hot water tank - for 3bed one site was upto 300l - a 6 foot tall tank - and circulate during day as needed.

The E10 bit might simply be due to the energy required to charge the larger store.  Or if time split like mine - too boost in afternoon and evening at off peak rate - when energy more typically needed 

7 hrs simply might not be enough if only one charge element.

But just found sales info for one system via quick google that uses 2 3kW elements off peak and 1 3kW element for peak rate boost.  7x6 = 42kWh - that's a lot of energy - but not excessive for a 3 bed in really cold snap.

That was McDonald Water Storage Electraflow.  It has user  programmable charge slots - but other suppliers system talked about preset factory settings. it's suggested preprogrammed e10 mode timings match my em e10 times.  It's e7 suggested times - 00- 0700.  But those on that system at least are user editable.

Perhaps the OPs unit was sold configured as e10, but now running 5 hrs of that when required at peak.  As a previous owner / tenant jumped to E7 enticed by cheaper rates and fixes.

That promised savings, but like old lossy nsh, doesn't suit the heating in use, so leads to more expensive than SR even - peak rate usage - for supplemental heating later in day.

It's manuals etc give a pretty reasonable overview of how such systems might work and feed heating and hot water - winter and summer etc.
Others appear to use hybrid tank and on demand combi style hw etc.
Others are pure combi - no tank at all - so 100% day rate in peak times.

Without details, the day demand might actually be charging the store temperature using a peak wired immersion boost style element if purely thermostat regulated , in the same way many HW only systems have an off peak and peak rate element only on an on / off switch.
But if the system programmed or factory pre programmed for e10, then it could even be using main elements - in that example 6kW - at peak.

So
Does the system have a tank ?
Does it have peak and off peak wiring supplies ?
Make / model ?
Controller model if any - user configurable ?

Swipe

The OP will be referring to a GEC Nightstor or similar and not a modern electric boiler.

https://www.ewjenkinsandson.co.uk/about-nightstor-boilers

It basically a massive box of bricks like a huge storage heater with a heat exchange that runs through the bricks and out to the radiator system. There was one at my previous bungalow which I disconnected and replaced with a couple of Daikin aircon heat pump units

70sbudgie

Is it worth contacting Octopus to see if they would let you onto their "Cosy" tariff? It is designed for ASHP customers, but I wonder if the OP's (non specified) electric wet heating might meet the requirements?

I don't know how region specific Cosy is and it would definitely be worth doing some cost calcs first.

Spoonie_Turtle

70sbudgie said:

Is it worth contacting Octopus to see if they would let you onto their "Cosy" tariff? It is designed for ASHP customers, but I wonder if the OP's (non specified) electric wet heating might meet the requirements?

I don't know how region specific Cosy is and it would definitely be worth doing some cost calcs first.

From their page

1. A day rate, set at the standard Flexible Octopus rate in your region.
2. Two cosy periods of super cheap rates between 04:00 - 07:00 and 13:00 - 16:00 every day, 40% cheaper than the Flexible Octopus rate in your region.
3. A peak rate between 16:00 - 19:00, 60% above the Octopus flexible rate in your region.

I doubt non-heat pump wet electric heating would qualify, part of the reason for Cosy tariff is to benefit people using a 'greener' system, which a heat pump is supposed to be because of the efficiency.  The OP's sounds like it has no advantages like that.