Renewables: "talking 'bout my generation"

mac2008

A miserable 3.5kWh for me yesterday (1.4 O's). However, when the sun did come out, was easily hitting 1kW even at 5-6pm - roll on the sun!

k66

My bargain Wattson Solar Plus is now fully operational with the Optiplugs calibrated too. Do people generally leave their Wattsons connected to the mains?
Need to get to grips with the Holmes software next.

tunnel

Clocked up a healthy 4.25 O's today. Unfortunately the wife didn't think we'd done that much so didn't put washer or dishwasher on.

Oh well, there's always tomorrow

http://www.youtube.com/watch?v=UtKADQnjQmc

Martyn1981

silverwhistle wrote: »

I follow you obsessives with interest ..as I'm moving back to the UK very soon.. Do any of you live on the Hampshire coast; t'would be interesting to compare your experience versus PVGIS?

Hiya SW, I don't live on the Hampshire coast, but I do match my generation to PVGIS climate targets each month. My systems have a little shading on the ESE and a lot of shading on the WNW (but helped by a SolarEdge system). I haven't adjusted for shading, just compare against unshaded targets.

Seems to be pretty damn close, though I do check the Met Office anomaly maps to account for any overs or unders:

http://www.metoffice.gov.uk/climate/uk/anomacts/

For 2012 as a whole, hit 98.6% of target - with June doing most of the damage, falling short by 2.2% of the annual target.

IMO PVGIS climate should give you a very good guesstimate.

Onto generation, got 4 O's today with the ickle WNW system generating just over 50% of that - poor start, good finish to the day.

Mart.

Oscargrouch

k66 wrote: »

My bargain Wattson Solar Plus is now fully operational with the Optiplugs calibrated too. Do people generally leave their Wattsons connected to the mains?
Need to get to grips with the Holmes software next.

Mine is permanently connected apart from when I plug it into my PC to update Holmes; this I tend to do every 14 days or so as it only has a 28 day memory of data. The transmitter unit is also plugged into the mains, as having it set for a short transmission period (every 3 seconds) tends to hammer the batteries.
Another sad 3.32 O's today. Only had sunshine from around 16:00..:(

[Deleted User]

19kWh yesterday

[Deleted User]

I can resist no more... how do you calculate O's ?

legoman62

jeepjunkie wrote: »

I can resist no more... how do you calculate O's ?

Your system is 3.92kWp so 1 "O" = 3.92kW
So yesterday you produced 19kWh ÷ by 3.92 = 4.84 O's
Why didn't you get a 4kWh system... it would be so much easier to work out;)

Mine is a 4kWp system so if I produce 3 O's = 12kWh


4.025 O's or 16.1 kWh yesterday

jackieblack

legoman62 wrote: »

Mine is a 4kWp system so if I produce 12 O's = 3kWh

????
surely you mean 12kWh = 3 Os ?

12 Os would = 48 kWh!:D

EricMears

jeepjunkie wrote: »

I can resist no more... how do you calculate O's ?

Why bother ? The figure is of no benefit to you and you've included all the details required to calculate it in your autosig for anyone who wants to know.

I really don't see any use for the figure. Simply dividing daily output by system rating is far too crude to be a meaningful comparison between systems. Geographical location and roof angles are highly significant and local shading might be an issue; ignore those and you've no idea how well you're doing compared with another user.