Finaly got access to the GDSAP software and check this out below
[TABLE="class: tablemeasures"]
[TR="class: measureshead"]
[TH="class: tocentreh"]Improvements[/TH]
[TH="class: tocentreh, align: center"]Estimated costs*[/TH]
[TH="class: tocentreh"]Your household's estimated annual savings[/TH]
[TH="class: tocentreh"]Typical annual savings - maximum Green Deal repayment in year 1**[/TH]
[/TR]
[TR]
[TD="class: toleft"]Insulate hot water cylinder with 80 mm jacket[/TD]
[TD="class: tocentre"]£15 - £30[/TD]
[TD="class: tocentre"]£93[/TD]
[TD="class: tocentre"]£92[/TD]
[/TR]
[TR]
[TD="class: toleft"]Low energy lighting for all fixed outlets[/TD]
[TD="class: tocentre"]£55[/TD]
[TD="class: tocentre"]£38[/TD]
[TD="class: tocentre"]£36[/TD]
[/TR]
[TR]
[TD="class: toleft"]Solar water heating[/TD]
[TD="class: tocentre"]£4,000 - £6,000[/TD]
[TD="class: tocentre"]£39[/TD]
[TD="class: tocentre"]£36[/TD]
[/TR]
[TR]
[TD="class: toleft"]Solar photovoltaic panels - 2.5 kWp[/TD]
[TD="class: tocentre"]£9,000 - £14,000[/TD]
[TD="class: tocentre"]£99[/TD]
[TD="class: tocentre"]£99[/TD]
[/TR]
[TR]
[TD="class: toleftsum"]Total[/TD]
[TD="class: tocentresum"]£13,070 - £20,030[/TD]
[TD="class: tocentresum"]£269[/TD]
[TD="class: tocentresum"]£263
so the 2.5 kwp system at 9k saving £99 per year would take 90 years to pay back it self . ??????[/TD]
[/TR]
[/TABLE]