#1 May 21, 2013 20:01:00

rogerhoward
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Hi Aldous.





Well done you guys there - this Sheffield Solar Farm iPad app sounds great!
http://udm4.com/iPhone/Home_Solar_Energy_Ca-4058626
I don't suppose anyone there has Android expertise, for the benefit of those like me not on the Apple platform?







Economy 10 tariff provides 6.9p/kWh off-peak import between 12am-5am, 1pm-4pm and 8pm-10pm; http://www.pvoutput.org/aggregate.jsp?id=21047&sid=18934&v=2&t=m on approx. 63% off-peak usage, 22% solar usage, and 15% peak-rate usage.
1,900kWh annually is exported, mostly in summer, on approx. 3,200kWh generation. Approx. 4,500kWh/year is imported, mostly for (a) winter and springtime off-peak Storage Heaters, and (b) off-peak hot water Immersion heating (which is “dumb”, i.e. not linked to the solar PV).
PV array is split East-West. Income is from Phase II 21p/kWh Feed-in-Tariff plus smart metered 3.2p/kWh Export Tariff.

Edited rogerhoward (May 21, 2013 20:01:00)

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#2 May 22, 2013 12:05:00

david.woodward
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Hi Roger,


I was about to start a thread about the app but you beat me to it!


Apologies to all those that don't have an iPad. We would have liked to have made the app available on as many platforms as possible but unfortunately didn't have the time or resources to do so - hopefully it's something that can be done in the future (especially with Android's growing market).


If anyone has used the app we'd be really happy to hear what you thought of it, good or bad. Just drop a reply here or email us.


Cheers,


David + Jamie.











Edited david.woodward (May 22, 2013 12:05:00)

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#3 May 27, 2013 18:48:00

HelenDaisy
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Hello


I'm not technical and I cannot make sense of it!


Should I have a battery somewhere?  Does it tell me what a system should do, or does it relate to what mine is doing?


Thank you


HelenDaisy





Edited HelenDaisy (May 27, 2013 18:48:00)

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#4 May 31, 2013 17:24:00

pmurray
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At least you can get it on your phone!  Us androids can't even do that (I blame my son who gate me the phone!)





Edited pmurray (May 31, 2013 17:24:00)

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#5 May 31, 2013 20:54:00

rogerhoward
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An Android? Do you mean me?







Economy 10 tariff provides 6.9p/kWh off-peak import between 12am-5am, 1pm-4pm and 8pm-10pm; http://www.pvoutput.org/aggregate.jsp?id=21047&sid=18934&v=2&t=m on approx. 63% off-peak usage, 22% solar usage, and 15% peak-rate usage.
1,900kWh annually is exported, mostly in summer, on approx. 3,200kWh generation. Approx. 4,500kWh/year is imported, mostly for (a) winter and springtime off-peak Storage Heaters, and (b) off-peak hot water Immersion heating (which is “dumb”, i.e. not linked to the solar PV).
PV array is split East-West. Income is from Phase II 21p/kWh Feed-in-Tariff plus smart metered 3.2p/kWh Export Tariff.

Edited rogerhoward (May 31, 2013 20:54:00)

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#6 June 11, 2013 13:40:00

david.woodward
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Hi HelenDaisy,


Thanks for your interest. I'll try to explain the main features of the app so you can get something out of it!


In simple terms the app will take your location, some details about your solar panels and some details about your energy consumption and calculate how much energy you will generate from your solar panels, how much of that energy you will use in your home and how much will be exported back to the national grid.


You will then be able to see how these figures will change if you had some way of storing the energy you generate, for example in a battery. You won't have this storage in your home at the moment, it is a hypothetical system which may be available in the future and we wanted people to see what effect it might have for their home.


To enter your location you need to tap the Crosshair symbol in the top left. The app will retreive your location automatically via GPS or you can hold down on a location of your choice.


To enter details of your solar panels and energy consumption tap on the edit symbol, also in the top left. After filling in all the fields tap ‘calculate results’ and the calculations will be made. You will then be presented with the graph, but if you want something a little bit easier to understand you can tap ‘Annual Figures’ in the top right and a side window will pop out with total amounts for a typical year.


You can then change the size of the battery using the slider bar underneath the graph and see how the amounts change.


Hope that has made things a little clearer but if you have any questions please ask.


Thanks,


David

















Edited david.woodward (June 11, 2013 13:40:00)

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#7 June 22, 2013 22:20:00

HelenDaisy
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Thank you for your help David.


It makes more sense now, although the time scale on the graph seems stuck  in 2011. Maybe my GCE maths was too long ago!


The annual figures are indeed easier.


Thanks again


HelenDaisy








Edited HelenDaisy (June 22, 2013 22:20:00)

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#8 June 24, 2013 22:35:00

rogerhoward
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Hi David Jamie.


What particularly impressed me was your unique inclusion of the “battery” element. I don't know why installers don't mention this possibility to potentially interested customers, to reduce their bills still further. I certainly would have been interested.


The battery possibility would also better justify the electricity-savings claims of some installers. In fact the trade could do well to take up your excellent precedent, with electricity savings constituting a relatively higher economic justification for solar PV these days.







Economy 10 tariff provides 6.9p/kWh off-peak import between 12am-5am, 1pm-4pm and 8pm-10pm; http://www.pvoutput.org/aggregate.jsp?id=21047&sid=18934&v=2&t=m on approx. 63% off-peak usage, 22% solar usage, and 15% peak-rate usage.
1,900kWh annually is exported, mostly in summer, on approx. 3,200kWh generation. Approx. 4,500kWh/year is imported, mostly for (a) winter and springtime off-peak Storage Heaters, and (b) off-peak hot water Immersion heating (which is “dumb”, i.e. not linked to the solar PV).
PV array is split East-West. Income is from Phase II 21p/kWh Feed-in-Tariff plus smart metered 3.2p/kWh Export Tariff.

Edited rogerhoward (June 24, 2013 22:35:00)

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