How low can you go...Daily, Weekly, Monthly, Whatever... electricity grid import

mickyduck55

Waywardmike said:

This is turning out to be quite the year!  Already at 114% of PVGIS!

Hi would you  mind putting the annual generation so far as a figure, the graph looks very impressive and I have a similar size system in the SE.
Mine as of today is 4054 kWh
TIA

Waywardmike

mickyduck55 said:

Waywardmike said:

This is turning out to be quite the year!  Already at 114% of PVGIS!
Hi would you  mind putting the annual generation so far as a figure, the graph looks very impressive and I have a similar size system in the SE.

Mine as of today is 4054 kWh
TIA

Sure can...  4451.64 kWh
SMA site calculates annual yield prediction at 3558.56 kWh, not sure where they got that figure from, installers I guess.  PVGIS, with the details I inputted gives an annual yield prediction of 3892 kWh, which is the one I compare against.

Safe to say, my system far outperforms any predictions so I'm more than happy...

mickyduck55

Waywardmike said:

mickyduck55 said:

Waywardmike said:

This is turning out to be quite the year!  Already at 114% of PVGIS!
Hi would you  mind putting the annual generation so far as a figure, the graph looks very impressive and I have a similar size system in the SE.

Mine as of today is 4054 kWh
TIA

Sure can...  4451.64 kWh
SMA site calculates annual yield prediction at 3558.56 kWh, not sure where they got that figure from, installers I guess.  PVGIS, with the details I inputted gives an annual yield prediction of 3892 kWh, which is the one I compare against.

Safe to say, my system far outperforms any predictions so I'm more than happy...

Thanks

Interesting my system generates an annual amount that is very close to PVGIS 3875 kWh as opposed to yours of 3892.  I think I typed my expected generation to match PVGIS... 

Did you have an issue in 2018.. no blip like that on my system

Waywardmike

mickyduck55 said:

Did you have an issue in 2018.. no blip like that on my system

Want to see something painful?

We had a loft conversion done in 2018.  We had a 'tin hat' covering our entire roof for the best months of the year.  I've always been obsessed with the panels from the moment they were installed, I shed a tear every time I walked out the door.

mickyduck55

Waywardmike said:

mickyduck55 said:

Did you have an issue in 2018.. no blip like that on my system

Want to see something painful?

We had a loft conversion done in 2018.  We had a 'tin hat' covering our entire roof for the best months of the year.  I've always been obsessed with the panels from the moment they were installed, I shed a tear every time I walked out the door.

I share you obsession.. and the pain LOL

ispookie666

October was a rubbish month for me 
As the sun sinks, we have significant shading and the 12 panels which are ENE have fallen off big time.  
Solar Production - 273 KWh
Grid Import - 212 KWh
Grid Export - 15 KWh
Home Consumption - 477 KWh

PS: I have solar iBoost which gets added to the home consumption, 94% solar self consumption 

Waywardmike

October was pretty great for me
  
PV Generation - 364.8 kWh
Grid Import - 110.2 kWh
Grid Export - 19.3 kWh
Home Consumption - 426.5 kWh
Battery in - 166.3 kWh
Battery out - 149.3 kWh (~90% efficiency)

For reference, last year we imported 281 kWh without a battery, but we 'only' generated 287.8 kWh so that would also account for some of the significantly less grid import this year.

mickyduck55

Best month last year 4.239 kWh imported no surprises June !

Coastalwatch

Beat us, best month July 11.39 kWh's. And that might have been because we were away for two weeks of it!

QrizB

QrizB said:

QrizB said:

History for 2021 here.

History for 2022:

• January 2022 - 219kWh imported, 84kWh generated, 17kWh exported.
• February - 169kWh imported, 142kWh generated, 51kWh exported.
• March - 146kWh imported, 246kWh generated, 99kWh exported.
• April - 132kWh imported, 300kWh generated, 179kWh exported.
• May - 106kWh imported, 335kWh generated, 171kWh exported.
• June - 40kWh imported, 338kWh generated, 114kWh exported.
• July - 50kWh imported, 341kWh generated, 100kWh exported.
• August - 48kWh imported, 322kWh generated, 183kWh exported.
• September - 108kWh imported, 217kWh generated, 42kWh exported.
• October - 110kWh imported, 207kWh generated , 45kWh exported.

Hello all, sorry for my absence from the forum these past weeks (er, months), life keeps getting in the way.

I thought I should update this thread with the rest of 2022, plus the start of 2023.

• November - 128kWh imported, 105kWh generated, 22kWh exported.
  
• December - 244kWh imported, 63kWh generated, 14kWh exported.
  

Then, for 2023:

• January - 262kWh imported, 95kWh generated, 37kWh exported.
  

My generation for November matched PVGIS, december was low but January beat it.

My import and export numbers for January are a little disappointing; I think I've become complacent about using off-peak electricity to charge my batteries and heat water, when I should be paying a bit more attention to the weather forecast and reducing my overnight useage to make room in my system for more daylight energy.