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Question: was this a good summer for solar?


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Posted

I keep stats of how my meter behaves, which helps me quantify savings and to know how my system has performed. Lately they don't look so good, but I think of all the overcast weather we've had. 

Is this just me, or was it not a great summer for PV? 

PS. I live in Gauteng 

Posted (edited)

Not a great summer for PV generation in Gauteng this year for sure. The La Nina impact this season was significant with the country experiencing generally wetter and cooler impacts.

Spent many days looking at weekly forecasts to see days on end overcast and raining.

But I suppose we should be thankful for the rain as Vaal Dam has seen the most consecutive days over 100% full since 2004 at more than 119 now. A very good position to be in heading in to winter.

MdF

Edited by MdF
Posted

You oakes on the eastern half of the country are probably measuring your rainfall in meters by now, here still in mm... :O) either way, the beginning of this solar cycle brought the predicted above average rainfall now for the 2nd rainy season... and with it more cloudy conditions (obviously) and thus worse energy production from the solar panels, here in the Kalahari, we covered ourselves, but if the extension lead to the neighbour didn't exist, there would have been a few days where a genny to charge batteries would have been a necessity. Anyway, next rainy season should still be above average, before things calm down/dry out a bit more again...

Posted
8 minutes ago, Kalahari Meerkat said:

You oakes on the eastern half of the country are probably measuring your rainfall in meters by now, here still in mm... :O)

Indeed we were - recorded 1,056mm from 1 Oct 2021 to today - most I have seen in Edenvale for many years.

MdF

Posted (edited)
18 hours ago, P1000 said:

I'm also in Gauteng. So far it looks like I'm on ~97% of the calculated average. So just about on par.

My results seems to be close to last summer but actually better. March turned out quite bad as a tree shot up in height and I only got to trim it a week ago. March 2020 was bad due to load shedding affecting my grid tied. Results from March 2020 on a kWh/kW installed PV.

All PV produced is used in full due to load connected. LS does affect my yield slightly at times but normally does not affect the average a lot. It's part of life :(

Current average at work on the genny hour meter is 2 hours a week during the last 30 months during office hours. This figure includes power failures.

 

solar-2yrs.jpg

Edited by Scorp007

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