they pay out the DD discount at the end of the year

Not as far as I can read. All three discounts are calculated daily and credited to your account quarterly. So at most there may be a chance that the final £12.60 is not credited to a final bill but it is not an all-or-nothing affair (a la nPower) or a massive 13% to 20% of your final bill (a la E-on).

Thanks shiverkitten but could you tell me where it is on their website just in case there is a disagreement in the future. I have taken the trouble to look at the 5 and general t&cs and unless I've missed it they don't cover it at all so I'm left with the front page of 5 where it shows total discounts of £50-40 per annum so I interpret that as all or nothing. I appreciate that may be wrong.

access:

Shiverkitten is right. Price List para 3 refers.

It's in the footnotes of a tariff sheet pdf.

http://www2.savetodaysavetomorrow.com/documents/Online_v5_Ratecard.pdf

ADDiTiONAl CHARGES AND DiSCOUNTS

1. An electricity customer paying by monthly Direct Debit will receive a discount of £8.40 (£8.00 exc VAT) per annum. This is calculated daily and is credited to your electricity bill quarterly.

2. A gas customer paying by monthly Direct Debit will receive a discount of £16.80 (£16.00 exc VAT) per annum. This is calculated daily and is credited to your gas bill quarterly.

3. A Dual Fuel customer paying by monthly Direct Debit will receive a Dual Fuel discount of £25.20 (£24.00 exc VAT) per annum. This is calculated daily and is credited to your gas bill quarterly.

Maximum Discount available is for Dual Fuel on Direct Debit i.e. Electricity £8.40, (£8.00 exc VAT), Gas £16.80 (£16.00 exc VAT), Dual Fuel £25.20 (£24.00 exc VAT), Total £50.40, (£48.00 exc VAT).

(You are right that a '2% under our standard prices' is not much of a guarantee or assurance, though!)

Thank you very much! As long as I keep an eye on it, it's better than I thought.

I am not sure why there is so much paranoia surrounding this tariff. There was another rumour circulating that this was almost a tied contract - if you cancelled before 31 July 2010 then not only subsequent but all previous charges would be recalculated at a standard price. This is not true. There are no cancellation penalties.

The surprising aspect of this tariff is that it is suitable for a wider range of consumptions than most - customers with a low consumption receive a good deal rather than the usual of just being for those of national average or higher useage (eg, the BG and E-on tariffs that pip EDF on the tables are less than £2 per year cheaper for the average consumer but are both more than 50% more expensive for the frugal!!!)