Micro rpoduction

[electrosistemas]

I have a photovoltaic system and the production today is around the 18 KWh.
Does any body want to compare his prodution to mine? (sun light, temperature and other influences).

 

[Somecamel]

What size is your array for a start?

 

[Geordie Spark]

Show me yours & I'll show you mine. :rolleyes2:

 

[Eco Deal]

looks like somebodys showing off? must be more than 4 kwp by far !!!! or you produced 1.8 kwh and need glassess?

 

[Worcester]

Why not post all your data up to PVoutput.org and then all can see it One of our plants near the East Coast (50kWp) got 16.33 kWH today, so what have you done, covered the Oval cricket ground?

 

[FB.]

On 02nd December I generated 8.1kWh.

 

[FB.]

Most of the automated data uploads going to PVOutput are gibberish and I rarely bother to use it nowadays (I intend to stop adding my outputs in a few weeks time).

Just as an example; a couple of systems within a few km of me reported 02nd December as "cloudy" when I know full well that it was a day of dawn-to-dusk sunshine.

There are other systems which seem to generate such high amounts that it's either a fiddle, or they have 250W panels instead of the claimed 200W; some systems are so far different from all others nearby that it's comical.

The best data appears to be that on the University of Sheffield Solar Farm website. They only accept generation meter readings. There's a massive difference between the Sheffield Solar website accurate data and PVOutput's fantasy land of virtual uploads.

Link to Sheffield here:
Welcome to the UK wide network of PV generators - Microgen Database.

I have system 774, which is a few miles North of Cambridge. It doesn't look a remarkable system until you select "performance ratio" which takes into account the azimuth and pitch.

 

[Worcester]

I guess it depends upon how you upload the data, systems relying on the Current Cost CT's are seriuosly innacurate, our sites, being based in live feeds from metering accurate CT's and direct inverter readings are within 0.5%. However we also monitor fully just where our power is going and what is using it with over 12 different circuits and generators being monitored at home so the minute by minute analysis that we can get from the pvoutput data is very useful to us. Also it allows us to compare multiple sites using multiple inverter types. If you use it correctly, and feed accurate data, it is a very useful tool. Garbage In Garbage Out...

 

[Worcester]

PS, I spent three years in and around the Hicks Building, I did my degree at Sheffiled University, so I do have an affinity for their work

I guess it also depends how you upload your data to PVoutput - our is fully automated using Raspberry PIs so no work to do it

 

[FB.]

direct inverter readings are within 0.5%.

Yes, the last time I looked, my Aurora's internal data log was showing an impressively close (99.5%) agreement with the Landis&Gyr E110 generation meter (identical meter to what's always been in my outoor meter cupboard).
The tiny discrepancy (0.5% greater in the inverter log compared to generation meter) can easily be attributed to cable losses in the ~2.5m run from the inverter to the generation meter.