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

Spies

January:

347kWh imported
91.5kWh generated
36.48kWh exported
60% self use

Total saving based on 20p/kWh, £11

Will update with SEG once I rceieved the bill.

Lowest import day was 7.9kWh thanks to some generation in the afternoon and then spending the evening at a friend's house 

mickyduck55

Thanks for continuing to play

January:

260 kWh imported
137.85 kWh generated
5.2  kWh exported

96% used... 

Best day 10.4 kWh
Worse day 0.52 kWh

Total saving based on 6.5 p/kWh, £8.70 (6.5 was my average unit cost for the 9 months to December)

Exported is very low, own usage high as I am using my AC (heat pump) to supplement my  GCH...

Had guests the last few day so cooked / Baked more but happy with the overall numbers..

Coastalwatch

And in stark contrast:-

Imported 1002 kWh's

Generated 363 kWh's

Exported 56 kWh's, consumed 307 kWh's or 84.6%.

Best day 26 kWh's

Worst day 1 kWh.

In my defence I can declare that no fossil fuels were harmed in the generation of these figures!

dolly365

We recently moved into a house with 12 solar panels on the roof (south east facing, no shade from trees etc). Never had solar panels before and no information was left by the previous owners re how to monitor their production or anything. They weren’t the original installers - the owners before them did it. We have a smart meter monitoring import and export and we’ve just signed up for the SEG - previous owners didn’t sign up for the FIT as this was precluded due to the panels being installed on a grant, however we can qualify for the SEG. 

Can anyone please give any advice or guidance on how to monitor output? I can q at see what we’re importing everyday through the Loop Energy app, but I can’t see how much our panels are producing and how much of that we’re able to use. There’s a simulation feature for panels and batteries on that app (just in case anyone is familiar), but it’s not going to be accurate as it’s not measuring our actual panel production/output. Thanks all!  

mickyduck55

dolly365 said:

We recently moved into a house with 12 solar panels on the roof (south east facing, no shade from trees etc). Never had solar panels before and no information was left by the previous owners re how to monitor their production or anything. They weren’t the original installers - the owners before them did it. We have a smart meter monitoring import and export and we’ve just signed up for the SEG - previous owners didn’t sign up for the FIT as this was precluded due to the panels being installed on a grant, however we can qualify for the SEG. 

Can anyone please give any advice or guidance on how to monitor output? I can q at see what we’re importing everyday through the Loop Energy app, but I can’t see how much our panels are producing and how much of that we’re able to use. There’s a simulation feature for panels and batteries on that app (just in case anyone is familiar), but it’s not going to be accurate as it’s not measuring our actual panel production/output. Thanks all!  

Good morning what make of inverter do you have there is usually an App supplied by the manufacturer that connects to that which will show the information you need

QrizB

dolly365 said:

We have a smart meter monitoring import and export and we’ve just signed up for the SEG. 

Can anyone please give any advice or guidance on how to monitor output?

Without buying any additional hardware:

• Do your solar panels have a generation meter? Usially they will, and this records total generation.
  
• Your smart meter has separate import and export registers, to record import and export.
  

Read all of these daily, weekly, monthly or annually, as you prefer. Your self-consumption is your daily/weekly/monthly/annual generation minus your daily/weekly/monthly/annual export.

QrizB

QrizB said:

QrizB said:

• (e) January - 406kWh imported, 93kWh generated
  
• (e) February - 376kWh imported, 97kWh generated
  
• (e) March - 268kWh imported, 224kWh generated
  
• (e) April - 158kWh imported, 351kWh generated
  
• May - 105kWh imported, 324kWh generated export N/A (meter not fitted).
• June - 92kWh imported, 272kWh generated, export N/A
• July - 99kWh imported, 319kWh generated, 43kWh exported (from 26/06 smart meter installation).
• August - 62kWh imported, 256kWh generated, 183kWh exported (battery commissioned 16/08).
• September  - 75kWh imported, 238kWh generated, 146kWh exported.
• October - 130kWh imported, 171kWh generated, 50kWh exported
• November - 200kWh imported, 94kWh generated, 24kWh exported.
• December - 258kWh imported, 41kWh generated, 7kWh exported.
  

Another month, another set of numbers. (I'm sure I'll get fed up quoting myself eventually.)

• January 2022 - 219kWh imported, 84kWh generated, 17kWh exported.

I'm pretty pleased with that; it's an average for the month of just over 7kWh/day imported, vs. 13.5kWh/day for the same month last year.

And so to February. A short month but much sunnier than the preceding three.

• February 2022 - 169kWh imported, 142kWh generated, 51kWh exported.

Import is down from 7kWh/day in January to ~4.5kWh/day, although self-consumption is only up by 1kWh/day in compensation. I'm slightly disappointed to have exported 51kWh but more than half of that was over the four days 24-27/02 when I simply couldn't use it fast enough despite pressing both the immersion heater and washing machine into service.

When this hot water tank needs replacing I'll have to get a bigger one

Speaking of which, the Zigbee-enabled immersion heater is ready to go in April when gas prices rise; the latest Octopus Go statement (which sadly doesn't quite line up with the calendar months) shows I used ~110kWh off-peak and ~80kWh peak, which seems a reasonable split.

mickyduck55

You are keen.. will post tomorrow but this is just out of my oven.. Batteries full and Go Faster .. what's not to like

mickyduck55

February:

339.5 kWh Total used
171 kWh imported
199.3 kWh generated
11.4  kWh exported

95% of generation used... 

Best day 17.7 kWh
Worse day 0.9kWh


Exported is very low, own usage high as I am still using my AC (heat pump) to supplement my  GCH...

JKenH

Stats from myenergi hub which don’t quite tally with my smart meter.

January
Total used 1.09MWh
Imported 961kwh (smart meter says 921)
Generated 139 (Fit meter 139)
Consumed 135.7
Exported 3.4

February
Total used 838
Imported 649 (smart meter says 625)
Generated  211 (Fit meter 210)
Consumed 188.2
Exported 22.4

Interesting discrepancy in generation between my smart meter and myenergi hub (clamp).