Cheapest domestic hot water (Gas or Economy 7 electric)

hlg_2

oh, sorry, i was just doing it from memory. I'm Midlands - so 10.78p general domestic (incl vat) and 14.43/4.83 Economy 7 (incl vat).

What sum are you doing to work out the break even point? Its very clever - thank you!!

Cardew

hlg wrote: »

oh, sorry, i was just doing it from memory. I'm Midlands - so 10.78p general domestic (incl vat) and 14.43/4.83 Economy 7 (incl vat).

What sum are you doing to work out the break even point? Its very clever - thank you!!

The break even point on those rates is a very high 38%.

So if you use 1,000kWh and use 38% at E7 and 62% at day tariff you pay:

380 x 4.83p = £18.35 + 620 x 14.43 = £89.47 Total = £107.82

1,000 at 'norma'l tariff of 10.78p = £107.80


Without storage heating it is almost impossible to get 38% E7 consumption.

mute_posting

Wowsers!

That is a hefty break even point!

I just have a rough and ready little spreadsheet set up with 1% steps that I plug the figures into and look where the columns match. There is a simple calculation that one of the regulars often posts, but I don't "think" it can cope with standing charges - I may be wrong!

I was in the process of doing a little program to do it and stick it on the web (basically put your rates and standard rates, with service charges or tier 1 rates in some boxes and press go) but other commitments are pressing my time currently.

MP

Cardew

mute_posting wrote: »

Wowsers!

That is a hefty break even point!

I just have a rough and ready little spreadsheet set up with 1% steps that I plug the figures into and look where the columns match. There is a simple calculation that one of the regulars often posts, but I don't "think" it can cope with standing charges - I may be wrong!

I was in the process of doing a little program to do it and stick it on the web (basically put your rates and standard rates, with service charges or tier 1 rates in some boxes and press go) but other commitments are pressing my time currently.

MP

With Ebico it is easy to work out as they have a very simple tariff.

It is far more difficult with other suppliers as you have to factor in Tier 1/Tier2 prices and allocations(or daily standing charge) plus discounts for dual fuel, payment by direct debit etc.

This means that a break even percentage for one level of consumption, will not necessarily apply if you double that annual consumption.

mute_posting

Cardew wrote: »

This means that a break even percentage for one level of consumption, will not necessarily apply if you double that annual consumption.

Yeah, I figured that, the playing about I was doing was using a bit of VB code in excel and I had a slider to increase / decrease usage so you see the difference it makes.

MP

hlg_2

wow, that's pretty high, i don't use anywhere near that.

Gonna look at changing this this week!

thanks for all your help people.