Renewables: "talking 'bout my generation"

Merlin139

onomatopoeia99 wrote: »

Hi all, don't know what an "O" is but I've just had a 5.2 kilowatt system installed. Battery to follow when Tesla sort out the controller unit to let it power the house when the mains supply is down (because what's the point of a stonking great battery on the side of the house which won't supply during a grid failure ... )

Definition of 'O's = kWh/kWp (kWh = your daily & accurate Generation figure) (kWp = the rated output of your PV Panels).

Taken from Oscargrouch Signature

onomatopoeia99

Merlin139 wrote: »

Definition of 'O's = kWh/kWp (kWh = your daily & accurate Generation figure) (kWp = the rated output of your PV Panels).

Thank you! Haven't got any monitoring yet apart from the generation meter in the garage (it will be coming with the battery) so no O figures from me yet then.

Merlin139

Cold wet miserable most of the day till around 16:00 then the sun appeared.

0.95 O's

legoman62

Panels washed and washed again:eek:0.925 O's here today:D

KevinG

From the sublime Hawaii yesterday to the ridiculous 0.24 Os today. Rain, rain, rain.

Oscargrouch

KevinG wrote: »

From the sublime Hawaii yesterday to the ridiculous 0.24 Os today. Rain, rain, rain.

That will teach you to Bragg..:D

Merlin139 wrote: »

Cold wet miserable most of the day till around 16:00 then the sun appeared 0.95 O's

I can beat that, bad as it was..1.28 O's...:rotfl:..

Kernel_Sanders

onomatopoeia99 wrote: »

Thank you! Haven't got any monitoring yet apart from the generation meter in the garage .

Hi, and welcome to the thread. My monitoring equipment is the display on the inverter; do you not even have that?

onomatopoeia99 wrote: »

(because what's the point of a stonking great battery on the side of the house which won't supply during a grid failure ... )

You could also ask 'what's the point of a stonking great array on the roof which won't supply during a grid failure', but that's exactly what most of us have.

Coastalwatch

From one extreme to t'other, just 0.43 O's today, taking march back to 78% of pvgis but on the plus side 68% of todays output went to 7 hours of heating via the ASHP and as a further bonus surpassing 9MWh's since installation!:)

onomatopoeia99

Kernel_Sanders wrote: »

Hi, and welcome to the thread. My monitoring equipment is the display on the inverter; do you not even have that?

You could also ask 'what's the point of a stonking great array on the roof which won't supply during a grid failure', but that's exactly what most of us have.

I just looked at the manual and can see that I can get the total power generation for the previous day from the inverter . Didn't realise it would do that. Just have to get the car out of the garage to read it, but the information is there.


I wouldn't expect the panels to power the house in the event of a grid failure because guaranteeing a steady 240V at the required number of amps to run everything in the house is going to be impossible with fluctuating levels of sunlight. With a battery it's different, that will put out a steady current up to a limit, until the battery is flat. The local substation here has a habit of tripping out for a few seconds to a few hours in high winds, so I want the battery as much as a big UPS to protect all of my devices with mechanical disks, as to save on electricity bills. I run a rackmount server 24/7, so my electricity usage is quite high (around £100/month). If my use was lower I don't think I'd have considered solar PV or a battery.

onomatopoeia99

So, the readings at 6.30am this morning when it was the pre-dawn half light and my 5.2kWp system was generating 12 watts:

Yesterday 23.2kWh
Today 3.9 kWh

(4.46 O and 0.75 O respectively)

I think the internal clock (if it has one) or whatever defines where "today" starts and ends may need some attention, as there's no way it generated 3.9kWh from midnight to 0630 today. Time to read some more of the manual when I get home from work later ...