nowty wrote: ↑Mon Jul 01, 2024 4:44 pm
Saturday 29th June nailed my 2 MWh export target by itself with a new daily record of 104 kWh exported.
So thats a net export income of £247 for a single month.
Ssshhhhh! You will give the new Chancellor ideas...
2.0 kW/4.62 MWh pa in Ripples, 4.5 kWp W-facing pv, 9.5 kWh batt
30 solar thermal tubes, 2MWh pa in Stockport, plus Congleton and Kinlochbervie Hydros,
Most travel by bike, walking or bus/train. Veg, fruit - and Bees!
Weather forecast down here on the south coast for the next 3 days is looking up after the last few miserable days here.
I think I'm going to have a crack at beating my continuous export record which currently stands at a continuous 44hrs with a minimum export of 2kW. I wonder if I can make 3 full calendar days, so 72 hours and lets have a stretch target minimum export of 3kW and obviously no help from the grid during the continuous export.
The EV is a bit low so I shall scam some extra cheap hours from the octopus this evening so I can start at midnight with a full home battery. I am going to start off at midnight tonight with a minimum of 3kW export but I reserve the right to drop it to 2kW if the weather does not play ball.
If the weather forecast is accurate I should generate 60 to 80 kWh each day and I will have a 60kWh battery reserve to start with. It looks ok on the maths but that assumes I'm not using any energy in the house which of course I will. SWMBO is at daughters so I at least have a chance.
18.7kW PV > 110MWh generated
Ripple 6.6kW Wind + 4.5kW PV > 33MWh generated
7 Other RE Coop's
105kWh EV storage
90kWh Home battery storage
40kWh Thermal storage
GSHP + A2A HP's
Rain water use > 530 m3
nowty wrote: ↑Tue Jul 16, 2024 4:12 pm
Weather forecast down here on the south coast for the next 3 days is looking up after the last few miserable days here.
I think I'm going to have a crack at beating my continuous export record which currently stands at a continuous 44hrs with a minimum export of 2kW. I wonder if I can make 3 full calendar days, so 72 hours and lets have a stretch target minimum export of 3kW and obviously no help from the grid during the continuous export.
The EV is a bit low so I shall scam some extra cheap hours from the octopus this evening so I can start at midnight with a full home battery. I am going to start off at midnight tonight with a minimum of 3kW export but I reserve the right to drop it to 2kW if the weather does not play ball.
If the weather forecast is accurate I should generate 60 to 80 kWh each day and I will have a 60kWh battery reserve to start with. It looks ok on the maths but that assumes I'm not using any energy in the house which of course I will. SWMBO is at daughters so I at least have a chance.
Good fortune to you in the endeavour. SWMBO was interrogating me today on the How's and when's of it all. I made up most of it. I think k it will be .
15kW PV SE, VI, HM, EN
42kWh LFPO4 storage
73kWh V2H EV
7kW ASHP
200ltr HWT.
3G
Deep insulation, air leak ct'd home
WBSx2
Low energy bulbs
Veg patches & fruit
First morning in the 72 hour continuous exportathon at my stretch target of 3kW min export. Woke up early to find total cloud cover.
Not a good start but the cloud has now cleared and the battery is now net charging on the solar.
I used about 50% of the battery overnight since midnight but the real test will be tonight because I don't know if I will get the battery back to full and then there is the hours before midnight as well as after which the battery must able to support.
I've done it before at 2kW but not 3kW, its a bit like Weetabix.
18.7kW PV > 110MWh generated
Ripple 6.6kW Wind + 4.5kW PV > 33MWh generated
7 Other RE Coop's
105kWh EV storage
90kWh Home battery storage
40kWh Thermal storage
GSHP + A2A HP's
Rain water use > 530 m3
nowty wrote: ↑Wed Jul 17, 2024 11:21 am
First morning in the 72 hour continuous exportathon at my stretch target of 3kW min export. Woke up early to find total cloud cover.
Not a good start but the cloud has now cleared and the battery is now net charging on the solar.
I used about 50% of the battery overnight since midnight but the real test will be tonight because I don't know if I will get the battery back to full and then there is the hours before midnight as well as after which the battery must able to support.
I've done it before at 2kW but not 3kW, its a bit like Weetabix.
Is the aim here a system test/stretch and 72×3×15p less any overnight costs?
15kW PV SE, VI, HM, EN
42kWh LFPO4 storage
73kWh V2H EV
7kW ASHP
200ltr HWT.
3G
Deep insulation, air leak ct'd home
WBSx2
Low energy bulbs
Veg patches & fruit
Joeboy wrote: ↑Wed Jul 17, 2024 12:01 pm
Is the aim here a system test/stretch and 72×3×15p less any overnight costs?
There will be no overnight costs, this is to see if I can export for 3 days (and nights) at 3kW without interruption or any grid support and still power my house. I could make more money by exporting at higher export rates in the day and charge overnight on the cheap slot.
But this is a personal record stretch test of my system and as an aside, I want to show just how far solar farms and batteries can power the grid. We can all do the maths theoretically but doing it for real is something else.
18.7kW PV > 110MWh generated
Ripple 6.6kW Wind + 4.5kW PV > 33MWh generated
7 Other RE Coop's
105kWh EV storage
90kWh Home battery storage
40kWh Thermal storage
GSHP + A2A HP's
Rain water use > 530 m3