Price updates
When comparing suppliers, a common concern is when did a supplier last change their prices.
This table provides details of all movements in prices and the introduction and cessation of tariffs over the last year.
You can see the date the change was added to the calculator and when it became effective.
Date when last update applied: 16th July 2010
| Supplier | Date Updated | Date Effective | Details |
| ScottishPower | 16.07.2010 | 16.07.2010 | Removal of Online Energy Saver 9 and launch of Online Energy Saver 10 |
| ScottishPower | 15.07.2010 | 15.07.2010 | Removal of Online Energy Reward |
| Scottish Hydro-Electric | 15.07.2010 | 15.07.2010 | betterplan renamed betterplan plus 2010 and launch of new version of betterplan |
| SWALEC | 15.07.2010 | 15.07.2010 | betterplan renamed betterplan plus 2010 and launch of new version of betterplan |
| Southern Electric | 15.07.2010 | 15.07.2010 | betterplan renamed betterplan plus 2010 and launch of new version of betterplan |
| ScottishPower | 08.07.2010 | 08.07.2010 | Launch of Price Tracker October 2011 |
| Sainsbury's Energy | 05.07.2010 | 05.07.2010 | Launch of Energy Discount Plan v3 |
| EDF Energy | 05.07.2010 | 05.07.2010 | Launch of Annual Fix v3 |
| EDF Energy | 05.07.2010 | 05.07.2010 | Launch of Energy Discount Plan v3 |
| npower | 05.07.2010 | 05.07.2010 | Launch of Sign Online 19 and removal of Sign Online 18 |
| Sainsbury's Energy | 05.07.2010 | 05.07.2010 | Launch of Annual Fix v3 |
| EON | 02.07.2010 | 02.07.2010 | Removal of Fix Online v8 |
| EON | 02.07.2010 | 02.07.2010 | Launch of SaveOnline v2 |
| EDF Energy | 28.06.2010 | 28.06.2010 | Removal of Online Saver v5 |
| British Gas | 17.06.2010 | 17.06.2010 | Launch of WebSaver8 and removal of WebSaver7 |
| npower | 17.06.2010 | 17.06.2010 | Launch of Football Saver |
| Swalec | 10.06.2010 | 10.06.2010 | removal of Go Direct 4 and launch of Go Direct 5 |
| Scottish Hydro-Electric | 10.06.2010 | 10.06.2010 | removal of Go Direct 4 and launch of Go Direct 5 |
| Southern Electric | 10.06.2010 | 10.06.2010 | removal of Go Direct 4 and launch of Go Direct 5 |
| Good Energy | 04.06.2010 | 04.06.2010 | Green and Gold removed from sale |
| Good Energy | 04.06.2010 | 04.06.2010 | 100% Renewable Energy renamed simply 'Good Energy' |
| E.ON | 03.06.2010 | 03.06.2010 | Launch of Track and Save V5 and removal of Track and Save V4 |
| ScottishPower | 17.05.2010 | 17.05.2010 | Relaunch of Online Saver Version 9 |
| E.ON | 04.05.2010 | 04.05.2010 | Launch of Age UK Online Saver |
| npower | 04.05.2010 | 04.05.2010 | Launch of Go Fix 2 |
| LoCo2 | 29.04.2010 | 29.04.2010 | Removal of Pocket Saver Fixed Tariff from the market |
| ScottishPower | 28.04.2010 | 28.04.2010 | Launch of Capped Price June 2012 |
| ScottishPower | 28.04.2010 | 28.04.2010 | Launch of Discounted Energy Aug 2011 |
| ScottishPower | 28.04.2010 | 28.04.2010 | Launched Online Energy Reward |
| OVO Energy | 27.04.2010 | 27.04.2010 | Launch of new gas and electricity prices |
| OVO Energy | 27.04.2010 | 27.04.2010 | Removal of all variable rate tariffs. |
| E.ON | 16.04.2010 | 16.04.2010 | Launch of FixOnline v8 and removal of FixOnlin v7 |
| British Gas | 09.04.2010 | 09.04.2010 | Removal of Online Saver and launch of Online Saver 2 |
| British Gas | 09.04.2010 | 09.04.2010 | Removal of WebSaver 6 and launch of WebSaver 7 |
| E.ON Energy | 07.04.2010 | 07.04.2010 | Updates to Track and Save V1,2,3 and 4 |
| E.ON Energy | 07.04.2010 | 07.04.2010 | Updates to Energy Guarantee V4 and 5 |
| npower | 06.04.2010 | 06.04.2010 | Removal of SOL17 and launch of SOL18 |
| npower | 06.04.2010 | 06.04.2010 | Launch of Price Guarantee tariff |
| Telecom Plus | 01.04.2010 | 01.04.2010 | Update of gas prices across all tariffs. |
| Southern Electric | 30.03.2010 | 30.03.2010 | Removal of Go Direct 3 and launch of Go Direct 4 |
| SWALEC | 30.03.2010 | 30.03.2010 | Removal of Go Direct 3 and launch of Go Direct 4 |
| Scottish Hydro-Electric | 30.03.2010 | 30.03.2010 | Removal of Go Direct 3 and launch of Go Direct 4 |
| ScottishPower | 29.03.2010 | 29.03.2010 | Reduction is gas prices on Standard tariffs. |
| E.ON Energy | 25.03.2010 | 25.03.2010 | Launch of Fix Online v7 and removal of v6 for new customers. |
| OVO Energy | 24.03.2010 | 24.03.2010 | Launch of new variable rate tariff. |
| OVO Energy | 24.03.2010 | 24.03.2010 | Reduction in gas prices on existing tariffs. |
| Atlantic Electric and Gas | 12.03.2010 | 12.03.2010 | Launch of Atlantic FP September 2011, replacing the existing March 2011 Atlantic Online FP version |
| first:utility | 12.03.2010 | 12.03.2010 | Update in tariff prices and discount structure on iSave v3 and Smart Online Saver v4 |
| EDF Energy | 11.03.2010 | 11.03.2010 | Reduction in gas prices for the tariffs: Standard; Climate Balance; Energy Discount Plan v1 and v2; Online v1, v2, v3, v4, v5 and v6; Online S@ver v2 |
| Sainsbury's Energy | 11.03.2010 | 11.03.2010 | Reduction in gas prices for the tariffs: Standard; Energy Discount Plan v1 and v2; Online Saver v2; |
| npower | 09.03.2010 | 09.03.2010 | Reduction in gas prices on standard tariffs (including Juice and National Trust),SOL4, 5, 6 and 7 tariffs and Go Save tariffs. |
| Southern Electric | 05.03.2010 | 05.03.2010 | Reduction on standard gas prices announced, effective existing customers 29th March 2010. |
| SWALEC | 05.03.2010 | 05.03.2010 | Reduction on standard gas prices announced, effective existing customers 29th March 2010. |
| Scottish Hydro-Electric | 05.03.2010 | 05.03.2010 | Reduction on standard gas prices announced, effective existing customers 29th March 2010. |
| first:utility | 01.03.2010 | 01.03.2010 | Launch of Smart Dual fuel online saver v4 and removal of v3. |
| first:utility | 01.03.2010 | 01.03.2010 | Launch of iSave Dual Fuel v3 and removal of v2 |
| ScottishPower | 25.02.2010 | 25.02.2010 | Launch of Simply Green Energy |
| ScottishPower | 24.02.2010 | 24.02.2010 | Removal of Green Energy H2O tariff |
| EDF Energy | 24.02.2010 | 24.02.2010 | Launch of Fixed Price 2015 |
| EDF Energy | 24.02.2010 | 24.02.2010 | Launch of Online Saver v6 and removal of Online Saver v4 |
| EDF Energy | 22.02.2010 | 22.02.2010 | Launch of Annual Fix Version 2 and removal of Annual Fix Version 1 |
| E.ON | 15.02.2010 | 15.02.2010 | Update of historic Track and Save v1 and v2 tariffs. |
| E.ON | 15.02.2010 | 15.02.2010 | Update of historic Guarantee v4 and v5 tariffs. |
| ScottishPower | 12.02.2010 | 12.02.2010 | Re-instatement of Capped September 2011 tariffs |
| E.ON | 12.02.2010 | 12.02.2010 | Removal of Fix Online v5 and launch of Fix Online v6 |
| ScottishPower | 11.02.2010 | 11.02.2010 | Launch of Fix n Flex April 2011 tariff |
| ScottishPower | 11.02.2010 | 11.02.2010 | Removal of Capped September 2011 from the market |
| ScottishPower | 11.02.2010 | 11.02.2010 | Removal of Discounted Energy December 2010 from the market |
| British Gas | 11.02.2010 | 11.02.2010 | Removal of Price Promise June 2010 from the market |
| ScottishPower | 11.02.2010 | 11.02.2010 | Removal of Fix n flex August 2010 from the market |
| ScottishPower | 11.02.2010 | 11.02.2010 | Launch of Price Tracker April 2011 tariff |
| first:utility | 10.02.2010 | 10.02.2010 | Launch of Standard Dual Fuel Tariff. |
| E.ON | 09.02.2010 | 09.02.2010 | Revision to gas prices of Track and Save v3 |
| ScottishPower | 06.02.2010 | 06.02.2010 | Launch of Online Energy Saver 9 and removal of Online Energy Saver 8 |
| Telecom Plus | 04.02.2010 | 04.02.2010 | Launch of revised pre-payment proces |
| British Gas | 04.02.2010 | 04.02.2010 | Standard Gas tariffs reduced by up to 7% across the UK |
| British Gas | 04.02.2010 | 04.02.2010 | Removal of Track and Save 2011 from the market |
| British Gas | 04.02.2010 | 04.02.2010 | Removal of WebSaver 5 and Launch of Websaver Saver 6. |
| npower | 01.02.2010 | 01.02.2010 | Removal of Go Fix Tariffs for new customers. |
| EDF Energy | 18.01.2010 | 18.01.2010 | Launch of Annual Fix Version 1 and Annual Fix Version 4 removed from the market to new customers. |
| EDF Energy | 18.01.2010 | 18.01.2010 | Launch of Energy Discount Plan Version 2 and Energy Discount Plan removed from the market to new customers. |
| Sainsbury's Energy | 18.01.2010 | 18.01.2010 | Launch of Annual Fix Version 1 and Annual Fix Version 4 removed from the market to new customers. |
| Sainsbury's Energy | 18.01.2010 | 18.01.2010 | aunch of Energy Discount Plan Version 2 and Energy Discount Plan removed from the market to new customers. |