Dominic McCann
@zapaman.bsky.social
De abajo y izquierda. Hoping for greater humanity in a finite world. #Coops #CommunityEnterprise #Sustainability #Acoustics
ASHP stats Oct-2025 (via MMSP)
Elec consump = 153kWh of which
DHW = 16kWh, SH = 133kWh
total heat delivered = 605kWh
Overall COP = 3.96
COP space heat = 4.28
COP hot water = 2.32
Average flow temp = 31.0°C
Outside temp = 11.1°C
Room temp = 19.3°C
Power draw SH = 409W
Power draw DHW = 1.42kW
Elec consump = 153kWh of which
DHW = 16kWh, SH = 133kWh
total heat delivered = 605kWh
Overall COP = 3.96
COP space heat = 4.28
COP hot water = 2.32
Average flow temp = 31.0°C
Outside temp = 11.1°C
Room temp = 19.3°C
Power draw SH = 409W
Power draw DHW = 1.42kW
November 5, 2025 at 2:11 PM
ASHP stats Oct-2025 (via MMSP)
Elec consump = 153kWh of which
DHW = 16kWh, SH = 133kWh
total heat delivered = 605kWh
Overall COP = 3.96
COP space heat = 4.28
COP hot water = 2.32
Average flow temp = 31.0°C
Outside temp = 11.1°C
Room temp = 19.3°C
Power draw SH = 409W
Power draw DHW = 1.42kW
Elec consump = 153kWh of which
DHW = 16kWh, SH = 133kWh
total heat delivered = 605kWh
Overall COP = 3.96
COP space heat = 4.28
COP hot water = 2.32
Average flow temp = 31.0°C
Outside temp = 11.1°C
Room temp = 19.3°C
Power draw SH = 409W
Power draw DHW = 1.42kW
We used 290.4kWh of grid⚡ in Oct-2025 with
~7kWh for EV
181kWh general household activity
153.8kWh for ASHP
Delivering 605kWh heat & DHW
our PV generated 103kWh, with 101kWh self consump & ~2kWh export
Total cost of elec: £64.62 inc VAT and standing charge (but excluding FiT payments for our PV).
~7kWh for EV
181kWh general household activity
153.8kWh for ASHP
Delivering 605kWh heat & DHW
our PV generated 103kWh, with 101kWh self consump & ~2kWh export
Total cost of elec: £64.62 inc VAT and standing charge (but excluding FiT payments for our PV).
November 3, 2025 at 11:24 AM
We used 290.4kWh of grid⚡ in Oct-2025 with
~7kWh for EV
181kWh general household activity
153.8kWh for ASHP
Delivering 605kWh heat & DHW
our PV generated 103kWh, with 101kWh self consump & ~2kWh export
Total cost of elec: £64.62 inc VAT and standing charge (but excluding FiT payments for our PV).
~7kWh for EV
181kWh general household activity
153.8kWh for ASHP
Delivering 605kWh heat & DHW
our PV generated 103kWh, with 101kWh self consump & ~2kWh export
Total cost of elec: £64.62 inc VAT and standing charge (but excluding FiT payments for our PV).
Really happy to have Home Assistant up & running on this Pi5 with NVMe drive. This is an upgrade from previous Pi4 with SD card. Thanks to Matt & Ellis at Carbon.Coop for help restoring backup file of Home Assistant instance. All working very smoothly.
October 31, 2025 at 8:46 AM
Really happy to have Home Assistant up & running on this Pi5 with NVMe drive. This is an upgrade from previous Pi4 with SD card. Thanks to Matt & Ellis at Carbon.Coop for help restoring backup file of Home Assistant instance. All working very smoothly.
We used 262.7kWh of grid⚡ in Sep-2025 with
105kWh for EV
187kWh general household activity
86.4kWh for ASHP
Delivering 347kWh heat & DHW
our PV generated 240kWh, with 221kWh self consump & ~18kWh export
Total cost of elec: £45.72 inc VAT and standing charge (but excluding FiT payments for our PV).
105kWh for EV
187kWh general household activity
86.4kWh for ASHP
Delivering 347kWh heat & DHW
our PV generated 240kWh, with 221kWh self consump & ~18kWh export
Total cost of elec: £45.72 inc VAT and standing charge (but excluding FiT payments for our PV).
October 5, 2025 at 3:16 PM
We used 262.7kWh of grid⚡ in Sep-2025 with
105kWh for EV
187kWh general household activity
86.4kWh for ASHP
Delivering 347kWh heat & DHW
our PV generated 240kWh, with 221kWh self consump & ~18kWh export
Total cost of elec: £45.72 inc VAT and standing charge (but excluding FiT payments for our PV).
105kWh for EV
187kWh general household activity
86.4kWh for ASHP
Delivering 347kWh heat & DHW
our PV generated 240kWh, with 221kWh self consump & ~18kWh export
Total cost of elec: £45.72 inc VAT and standing charge (but excluding FiT payments for our PV).
Heat pump monitoring for last 12months via OpenEnergyMon. These 2 visualizations show the hot water and space heating uses as separate charts.
September 17, 2025 at 11:07 AM
Heat pump monitoring for last 12months via OpenEnergyMon. These 2 visualizations show the hot water and space heating uses as separate charts.
Don't you just love a Pacer! Minty and chewy!
Oh and the trains were fun too (if less fragrant)
Oh and the trains were fun too (if less fragrant)
September 3, 2025 at 2:25 PM
Don't you just love a Pacer! Minty and chewy!
Oh and the trains were fun too (if less fragrant)
Oh and the trains were fun too (if less fragrant)
We used 153.4kWh of grid⚡ in Aug-2025 with
59kWh for EV
190kWh general household activity
18.5kWh for ASHP
Delivering 31.2kWh heat / DHW
our PV generated 316kWh, with 241kWh self consump & ~74kWh export
Total cost of elec: £30.66 inc VAT and standing charge (but excluding FiT payments for our PV).
59kWh for EV
190kWh general household activity
18.5kWh for ASHP
Delivering 31.2kWh heat / DHW
our PV generated 316kWh, with 241kWh self consump & ~74kWh export
Total cost of elec: £30.66 inc VAT and standing charge (but excluding FiT payments for our PV).
September 2, 2025 at 5:49 PM
We used 153.4kWh of grid⚡ in Aug-2025 with
59kWh for EV
190kWh general household activity
18.5kWh for ASHP
Delivering 31.2kWh heat / DHW
our PV generated 316kWh, with 241kWh self consump & ~74kWh export
Total cost of elec: £30.66 inc VAT and standing charge (but excluding FiT payments for our PV).
59kWh for EV
190kWh general household activity
18.5kWh for ASHP
Delivering 31.2kWh heat / DHW
our PV generated 316kWh, with 241kWh self consump & ~74kWh export
Total cost of elec: £30.66 inc VAT and standing charge (but excluding FiT payments for our PV).
Our electricity consumption so far in 2025.
Everything under good control.
So far every month this year has had better PV generation than last year.
Everything under good control.
So far every month this year has had better PV generation than last year.
August 29, 2025 at 6:12 PM
Our electricity consumption so far in 2025.
Everything under good control.
So far every month this year has had better PV generation than last year.
Everything under good control.
So far every month this year has had better PV generation than last year.
Having posted overall energy data for our ASHP I have had some queries about running costs. This is not exactly the answer to that question (which I could go into more detail), but here is our total household utility costs since 2015. No adjustment for inflation etc, 2023 spike = UK unit rate spike
August 25, 2025 at 9:38 AM
Having posted overall energy data for our ASHP I have had some queries about running costs. This is not exactly the answer to that question (which I could go into more detail), but here is our total household utility costs since 2015. No adjustment for inflation etc, 2023 spike = UK unit rate spike
My house has had an ASHP for 4.25yrs. In that time (with continuous monitoring) it has consumed 10249kWh-elec and delivered 32308kWh-heat. The average COP has been 3.15 and the average daily heat delivered has been 20.8kWh, with approx 18.9kWh/day being space heating and 2.1kWh/day being DHW.
August 24, 2025 at 9:14 AM
My house has had an ASHP for 4.25yrs. In that time (with continuous monitoring) it has consumed 10249kWh-elec and delivered 32308kWh-heat. The average COP has been 3.15 and the average daily heat delivered has been 20.8kWh, with approx 18.9kWh/day being space heating and 2.1kWh/day being DHW.
The average temperature in our house is currently 24.8C with an outside value of 33.3C.
August 13, 2025 at 1:55 PM
The average temperature in our house is currently 24.8C with an outside value of 33.3C.
Here is 6yrs worth of electricity consumption and PV generation data for our household.
August 8, 2025 at 10:07 AM
Here is 6yrs worth of electricity consumption and PV generation data for our household.
Official opening of new Village Greens shop in Prestwich (yesterday) #coops #community
August 3, 2025 at 11:37 AM
Official opening of new Village Greens shop in Prestwich (yesterday) #coops #community
We used 125.8kWh of grid⚡ in July-2025 with
30kWh for EV
187kWh general household activity
28kWh for ASHP
Delivering 59kWh heat
our PV generated 341kWh, with 264kWh self consump and ~77kWh export
Total cost of elec: £28.76 inc VAT and standing charge (but excluding FiT payments for our PV).
30kWh for EV
187kWh general household activity
28kWh for ASHP
Delivering 59kWh heat
our PV generated 341kWh, with 264kWh self consump and ~77kWh export
Total cost of elec: £28.76 inc VAT and standing charge (but excluding FiT payments for our PV).
August 3, 2025 at 9:47 AM
We used 125.8kWh of grid⚡ in July-2025 with
30kWh for EV
187kWh general household activity
28kWh for ASHP
Delivering 59kWh heat
our PV generated 341kWh, with 264kWh self consump and ~77kWh export
Total cost of elec: £28.76 inc VAT and standing charge (but excluding FiT payments for our PV).
30kWh for EV
187kWh general household activity
28kWh for ASHP
Delivering 59kWh heat
our PV generated 341kWh, with 264kWh self consump and ~77kWh export
Total cost of elec: £28.76 inc VAT and standing charge (but excluding FiT payments for our PV).
Just received a little Raspberry Pi 5 bundle with NVME 256GB SSD and Argon case. Will be using these parts to upgrade my Home Assistant set up.
July 29, 2025 at 4:14 PM
Just received a little Raspberry Pi 5 bundle with NVME 256GB SSD and Argon case. Will be using these parts to upgrade my Home Assistant set up.
Have received the "normal" reply from DfT regarding delay/pause to Midland Mainline Electrification. The normal short sightedness that is
July 29, 2025 at 12:18 PM
Have received the "normal" reply from DfT regarding delay/pause to Midland Mainline Electrification. The normal short sightedness that is
Interesting that NIBEuplink now offers energy estimates for our ASHP. Stats here a little different to our OpenEnergyMon heat meter data. So NIBE are estimating 1918kWh elec and our (real) metering is 2526kWh. For heat o/p the estimate is closer at 8094kWh versus 7983kWh from our heat metering.
July 26, 2025 at 5:01 PM
Interesting that NIBEuplink now offers energy estimates for our ASHP. Stats here a little different to our OpenEnergyMon heat meter data. So NIBE are estimating 1918kWh elec and our (real) metering is 2526kWh. For heat o/p the estimate is closer at 8094kWh versus 7983kWh from our heat metering.
Astonishingly realistic vocals from this vintage piece of vinyl.
July 14, 2025 at 7:55 PM
Astonishingly realistic vocals from this vintage piece of vinyl.
We used 90.9kWh of grid⚡ in Jun-2025 with
30kWh for EV
167kWh general household activity
33kWh for ASHP
Delivering 96kWh heat
our PV generated 354kWh, with 258kWh self consump and ~95kWh export
Total cost of elec: £25.80 inc VAT and standing charge (but excluding FiT payments for our PV).
30kWh for EV
167kWh general household activity
33kWh for ASHP
Delivering 96kWh heat
our PV generated 354kWh, with 258kWh self consump and ~95kWh export
Total cost of elec: £25.80 inc VAT and standing charge (but excluding FiT payments for our PV).
July 3, 2025 at 10:45 AM
We used 90.9kWh of grid⚡ in Jun-2025 with
30kWh for EV
167kWh general household activity
33kWh for ASHP
Delivering 96kWh heat
our PV generated 354kWh, with 258kWh self consump and ~95kWh export
Total cost of elec: £25.80 inc VAT and standing charge (but excluding FiT payments for our PV).
30kWh for EV
167kWh general household activity
33kWh for ASHP
Delivering 96kWh heat
our PV generated 354kWh, with 258kWh self consump and ~95kWh export
Total cost of elec: £25.80 inc VAT and standing charge (but excluding FiT payments for our PV).
Soon to be gone I would guess
June 28, 2025 at 4:11 PM
Soon to be gone I would guess
We used 124kWh of grid⚡ in May-2025 with
53kWh for EV
148kWh general household activity
55kWh for ASHP
Delivering 181kWh heat
our PV generated 424kWh, with 262kWh self consump and ~162kWh export
Total cost of elec: £32.69 inc VAT and standing charge (but excluding FiT payments for our PV).
53kWh for EV
148kWh general household activity
55kWh for ASHP
Delivering 181kWh heat
our PV generated 424kWh, with 262kWh self consump and ~162kWh export
Total cost of elec: £32.69 inc VAT and standing charge (but excluding FiT payments for our PV).
June 3, 2025 at 9:27 PM
We used 124kWh of grid⚡ in May-2025 with
53kWh for EV
148kWh general household activity
55kWh for ASHP
Delivering 181kWh heat
our PV generated 424kWh, with 262kWh self consump and ~162kWh export
Total cost of elec: £32.69 inc VAT and standing charge (but excluding FiT payments for our PV).
53kWh for EV
148kWh general household activity
55kWh for ASHP
Delivering 181kWh heat
our PV generated 424kWh, with 262kWh self consump and ~162kWh export
Total cost of elec: £32.69 inc VAT and standing charge (but excluding FiT payments for our PV).
It's still a long way to drive in any car; but modern EVs and charge point infrastructure make the whole thing very easy.
June 3, 2025 at 7:09 AM
It's still a long way to drive in any car; but modern EVs and charge point infrastructure make the whole thing very easy.