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

mickyduck55
Posts: 676 Forumite


It has been the first week of the year when I have had little or no import from the grid so I am creating this thread so we can brag about how little energy we import in a week. I was surprised at this low figure as we were not deliberately time shifting energy usage. It has been a normal week with cooking, baking , washing, dishwasher and showering (I did convince my better half to use the power shower instead of the 10 kW electric one as there was ample hot water heated by the immersion).
I think it will be difficult to get down to zero because of the inverter not being fast enough when certain electric appliances kick in and out causing some minor import, early morning toaster and kettle at the same time will require some import... so who will be the first to Zero ?
3.995kWP SSW facing. Commissioned 7 July 2011. 24 degree pitch (£3.36 /W).
17 Yingli 235 panels
Sunnyboy 4000TL inverter
Sunny Webox
Solar Immersion installed May 2013, after two Solar Immersion lasting just over the guarantee period replaced with Solic 200... no problems since.
17 Yingli 235 panels
Sunnyboy 4000TL inverter
Sunny Webox
Solar Immersion installed May 2013, after two Solar Immersion lasting just over the guarantee period replaced with Solic 200... no problems since.
13 Feb 2020 LUX AC 3600 and 3 X Pylon Tech 3.5 kW batteries added...
20 January 2024 Daikin ASHP installed
6
Comments
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Wow and I though I was doing well by only importing 4kWh on Sunday! Congratulations on getting so lowN. Hampshire, he/him. Octopus Intelligent Go elec & Tracker gas / Vodafone BB / iD mobile. Ripple Kirk Hill member.
2.72kWp PV facing SSW installed Jan 2012. 11 x 247w panels, 3.6kw inverter. 33MWh generated, long-term average 2.6 Os.Not exactly back from my break, but dipping in and out of the forum.Ofgem cap table, Ofgem cap explainer. Economy 7 cap explainer. Gas vs E7 vs peak elec heating costs, Best kettle!4 -
Can't beat your weekly figure Mick, that's seriously low !
Closest we came to a zero import day was 21st March with 0.211kwh.
Scott in Fife, 2.9kwp pv SSW facing, 2.7kw Fronius inverter installed Jan 2012 - 14.3kwh Seplos Mason battery storage with Lux ac controller - Renault Zoe 40kwh, Corsa-e 50kwh, Zappi EV charger and Octopus Go4 -
Lots of sun and biggish battery capacity...
3.995kWP SSW facing. Commissioned 7 July 2011. 24 degree pitch (£3.36 /W).
17 Yingli 235 panels
Sunnyboy 4000TL inverter
Sunny Webox
Solar Immersion installed May 2013, after two Solar Immersion lasting just over the guarantee period replaced with Solic 200... no problems since.
13 Feb 2020 LUX AC 3600 and 3 X Pylon Tech 3.5 kW batteries added...
20 January 2024 Daikin ASHP installed1 -
QrizB said:Wow and I though I was doing well by only importing 4kW on Sunday! Congratulations on getting so low
3.995kWP SSW facing. Commissioned 7 July 2011. 24 degree pitch (£3.36 /W).
17 Yingli 235 panels
Sunnyboy 4000TL inverter
Sunny Webox
Solar Immersion installed May 2013, after two Solar Immersion lasting just over the guarantee period replaced with Solic 200... no problems since.
13 Feb 2020 LUX AC 3600 and 3 X Pylon Tech 3.5 kW batteries added...
20 January 2024 Daikin ASHP installed3 -
Yeah im at 14kwh, for the week so this is something I can't compete in.
The leccy shower is what kills it for me, its running 5 times a day on a normal day, so unless I can convince the family to shower when the sun is out (tried and failed) then it's not gonna happen.
I suppose the silver lining is that it's 2kw a day from an average usage of 30kwh a day (not sure why it's so high, it's usually 20-25kwh a day) so the solar +batts is working well.
Just need to fit hot water tank and ditch the leccy showersWest central Scotland
4kw sse since 2014 and 6.6kw wsw / ene split since 2019
24kwh leaf, 75Kwh Tesla and Lux 3600 with 60Kwh storage1 -
A little effort this week time shifting so kettle and toaster not on together and zero 10 kWh electric showers, we used the power shower and the solar heated water via the Solic
Total generation for the week 166.87 kWh
3.995kWP SSW facing. Commissioned 7 July 2011. 24 degree pitch (£3.36 /W).
17 Yingli 235 panels
Sunnyboy 4000TL inverter
Sunny Webox
Solar Immersion installed May 2013, after two Solar Immersion lasting just over the guarantee period replaced with Solic 200... no problems since.
13 Feb 2020 LUX AC 3600 and 3 X Pylon Tech 3.5 kW batteries added...
20 January 2024 Daikin ASHP installed4 -
I promised to post some monthly figures here, so here's what I've got to hand (going back further is impractical due to missing data).
- 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.
None of those months get close to mickyduck55's <2kWh weeks but I'm pretty happy with them all the same, considering the size of my system and a 4-person household.N. Hampshire, he/him. Octopus Intelligent Go elec & Tracker gas / Vodafone BB / iD mobile. Ripple Kirk Hill member.
2.72kWp PV facing SSW installed Jan 2012. 11 x 247w panels, 3.6kw inverter. 33MWh generated, long-term average 2.6 Os.Not exactly back from my break, but dipping in and out of the forum.Ofgem cap table, Ofgem cap explainer. Economy 7 cap explainer. Gas vs E7 vs peak elec heating costs, Best kettle!5 -
WE use about as much in a week as you do in a month and I thought our house was quite electricity efficient so I have no idea how you do it.I think....3
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michaels said:WE use about as much in a week as you do in a month and I thought our house was quite electricity efficient so I have no idea how you do it.It's odd, I look at mickyduck and think the same - how does he do it? Then I see he's got ~4kWp of PV and 10kWh of batteries, vs. my ~2.7kW and (until recently) 1.2kWh of battery.December will be when we see how much energy we need in the dark and coldN. Hampshire, he/him. Octopus Intelligent Go elec & Tracker gas / Vodafone BB / iD mobile. Ripple Kirk Hill member.
2.72kWp PV facing SSW installed Jan 2012. 11 x 247w panels, 3.6kw inverter. 33MWh generated, long-term average 2.6 Os.Not exactly back from my break, but dipping in and out of the forum.Ofgem cap table, Ofgem cap explainer. Economy 7 cap explainer. Gas vs E7 vs peak elec heating costs, Best kettle!2 -
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