Mick Wall
@Zarch1972
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Following
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Husband, Dad, Wednesdayite, Retro Fan, Running Coach & Geek. Creator of @energystatsuk website and Twitter.
Sheffield
Joined July 2009
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HEAT PUMPS DON'T WORK WHEN IT'S COLD!!!
Well, that's what 'they' say?
COP 2.8 when -0.5C outside. House a toasty 20C this morning.
1930s semi retrofit with normal radiators!!
System design & sizing is KING. 👑
@energystatsuk
Graph by
@Openenergymon
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Yes it's running, no it's not noisy. I can hear the road at front of the house over the sound of the heat pump. Yes, you know it's working when you're stood next to it cos you get an icy blast from the front. It's passed the wife test who said it sounded fine. 😃
@energystatsuk
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What Size Heat Pump (and more besides).
I've been tinkering with this article for too long now. After lots of internal feedback, time to put it out there for a bit more critique.
All comments welcome.
Warning, it's a whopping read, grab a brew!! 😆
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It has taken me a while to finish these
@_heatgeek
courses (real job getting in the way), but I've finally completed both the Awakening and Mastery exams.
“Congratulations, You are now one of the UK’s top heating engineers” it tells me.
Correction, one of the UK’s top homeowner
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We own an EV!! Covid meant a 3 month delivery delay, but she's arrived today and looks tremendous. We can finally divert solar with our
@myenergiuk
Zappi and take advantage of future
@octopus_energy
price plunges.
@energystatsuk
@JordeeBrompton
@DeanFieldingF1
@agile_phil
@g__j
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Pretty pretty cold last night and still -4C now at 9am.
Despite all the FUD and BS about heat pumps not liking the British climate, we seem to nice and warm. We must be doing something wrong? 🤷♂️
COP of 2.92 across the past 24 hours (range -5C to +1C).
Those ill fated Energy
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Bloody love this. 😍
Heat pump came out of overnight setback, Trickled ~2.6kW of heat into the house for 18 hours straight before dropping back to overnight setback.
Outside 5C, inside 20.5C. COP of 4.34 for the whole period.
Monitoring by
@Openenergymon
@energystatsuk
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Oh my word, this has properly hurt my head at times, but I'm delighted to have worked through and completed this
@_heatgeek
Awakening Course.
My knowledge has gone through the roof on the following modules.
Watt is Energy
Heat Loss Calcs
Mass Flow Rate
Velocity Pipe Sizing
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Since installation in February, I've diverted 928kWh of solar into my
@MixergyLtd
water cylinder via
@myenergiuk
Eddi.
With electric around 40p/unit now, that's almost £400 of juice into the cylinder.
The Eddi has nearly paid for itself in a single summer! 👍
@energystatsuk
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Latest
@Raspberry_Pi
mini-project; a Energy / Solar display monitor. Its a Pi Zero W in a self built
@LEGO_Group
case, with the GFX Hat display from
@pimoroni
. I wrote some Python code to pull the data from my
@Openenergymon
EmonPi, switching between red/green when required. 👍
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Thrilled to trial
@OctopusEnergy
new hardware.
The Home Mini connects to your smart meter & home Wi-Fi to report realtime consumption & tariff pricing data back to the Octopus app.
It's like a Smart Meter, but with super Octo powers. 🐙
@energystatsuk
Thanks
@g__j
@agile_phil
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Wonderful autumnal solar PV day yesterday.
23kWh generated, 0kWh imported.
Battery (from previous day) covers ASHP hot water run overnight.
We get through breakfast on battery, solar fills batteries through the day, ASHP water run in the afternoon.
Then we sail through the
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ONE YEAR OF HEAT PUMP DATA
Yesterday marked the one year anniversary of logging my heat pump data to
@Openenergymon
Electric in: 3074 kWh
Heat Output: 11074 kWh
SCOP: 3.60
(for both heating and hot water)
All logged via:
Vaillant Working Figures:
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Lowest Negative Price I've ever seen since Agile started in February 2018. 🤯
WOW!!! ⚡☀️🌬️😍
National average pricing for
@OctopusEnergy
Agile Tariff: Sun 02-07-2023
Min: -19.4p (14:00)
Max: 24.8p (22:00)
Avg: 2.3p
Avg Excl Peak: 1.0p
Peak 4pm-7pm: 11.2p
Get graphs & pricing for all 14 UK regions at
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As part of a forthcoming Arotherm deep dive article on
@energystatsuk
(that i'm planning on writing) , I wanted to know why my 5kW model isn’t top of the
@openenergymon
SCOPs despite
@Damon_BPHR
and I doing everything by the book (open system, low flow temp, weather comp etc).
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Another
@energystatsuk
article that has been months in the making.
"
@MixergyLtd
Heat Pump Performance"
I've been wrongly critical of the performance of my 250L Mixergy with my heat pump. This article puts performance worries to bed.
480% efficient when 12C outside?
Graphs
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Remember how old 32kW combi cycled like mad cos it could only range rate down to 6kW minimum heat out?
What a difference ASHP makes. Just simmering away at 500W electric in for 2.5kW of heat out. Matching house heat loss.
Outside is 7-8C & COP calc is 4.8 👍
@energystatsuk
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5
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Owning a heat pump gets a bit boring after a while cos it just works! 😂
With weather compensation it tracks outside temp and puts just enough heat into house to maintain indoor temp.
Last 24hrs
Electric In: 12.7kWh
Heat Out: 51.5kWh
COP: 4.03
Avg Outdoor: 5.7C
@energystatsuk
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Price Signals!!!
Just imagine a future where tons of "smart" devices like cars, batteries and water cylinders all switch themselves on because there is an abundance of cheap green energy on the grid. Like tomorrow afternoon?
It can't some soon enough.
National average pricing for
@OctopusEnergy
Agile Tariff: Sat 01-07-2023
Min: -1.1p (12:30)
Max: 28.4p (18:30)
Avg: 9.5p
Avg Excl Peak: 7.9p
Peak 4pm-7pm: 20.8p
Get graphs & pricing for all 14 UK regions at
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Time to hold my hands up - "I WAS WRONG" - the
@MixergyLtd
can get good COP.
Hey, it's me, I'm the problem, it's me!!
I did an extreme test today.
I fully emptied my 250L Mixergy
It was 9C at the bottom and 12C at the top.
Settings used
* Arotherm in Eco mode.
* Arotherm
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Dec 2022 Heat Pump
@energystatsuk
Electric in: 647kWh
Heat Out: 2195kWh
COP: 3.4
(for heating and hot water)
Outside Temp
Low: -3C
Avg: 4.3C
High: 12C
Inside Temp
Avg: 20C
Avg unit import 17p
(EV/Solar/Batt/Go)
17 / 3.4 = 5p per unit/heat
My Install:
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I was trying to explain to a friend about
@octopus_energy
Agile pricing compared to the 14p per unit standard tariff they are currently on. I came up with this which shows the past 48 hours Agile pricing. A picture paints a thousand words!
@energystatsuk
@g__j
@agile_phil
😀
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4
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An absolutely heroic and late into the evening effort by
@Damon_BPHR
to get the heat pump up and running late last night. Much tweaking ahead as we're on out of the box settings, but initial signs are promising. More full monitoring planned, so watch this space.
@energystatsuk
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Quite a cold snap in Sheffield over the last 14 hours.
Low of -5.6C
High of -1.8C
Heat pump all good though.
Still a COP of 2.85 on heating (2.4 on hot water).
Remember, these are great low temperatures to work out the heat loss of your house using gas usage data. So you
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5
63
Having great fun helping a pal setup their new
@myenergiuk
3 phase Zappi (with wifi) & Harvis so they can divert surplus from their 9kW Hydro and 6kW Solar setup. Pity the Eddi is out of stock as they have tons of energy going spare as showed today.
@energystatsuk
@JordeeBrompton
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5
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After testing the prototype, delighted to have received the official
@OctopusEnergy
home mini.
A breeze to set up & instantly seeing live electric usage via the Octopus app.
Yes, I'm exporting right now. ☀️
Looking forward to exploring its future capabilities.
@energystatsuk
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@g__j
@OctopusEnergy
@ilkehomes
1930's semi detached here.
- Solar ✅
- Batteries ✅
- EV ✅
- Smart water cylinder ✅
- ASHP coming soon ✅
- On an Octopus time of use tariff. ✅
Retrofit is absolutely possible. 👍
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3
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Following the radiator upgrades by
@Damon_BPH
I'm now able to try 45 degrees flow on the Combi. Heat loss calcs suggest all rads should be able to cope, even at -3 design temp. So we can go into winter pretending we've got a heat pump. 😊
@energystatsuk
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ASHP Performance - January 2023
Electric In: 569kWh
Heat Out: 2056kWh
COP: 3.61
Outside Low: -3.2C
Outside Avg: 4.8C
Outside High: 11.1C
Inside Avg: 20.3C
COP is both heating & hot water.
@energystatsuk
Full Details here:
Monitoring by
@Openenergymon
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The
@flir
camera loan from
@octopus_energy
led me to question some insulation in old building works. Found this mess behind plasterboard. Draughts galore. Building regs probably signs this off "ok" as "having insulation". 🤷♂️ How? Bet this is rife?
@g__j
@kenbone44
@energystatsuk
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Was absolutely bricking it today when
@BBCRadio4
#YouAndYours
interviewed me about smart tariffs and plunge pricing on
@OctopusEnergy
Agile tariff.
Then comments from
@g__j
@peterwsmith101
@NEA_UKCharity
Listen in from around 9 mins.
@energystatsuk
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OMG, it's like Agile from 2020/2021 has come back to say hello!!
Long time followers will understand this!! 🤣
National average pricing for
@OctopusEnergy
Agile Tariff: Sat 23-12-2023
Min: -2.2p (22:30)
Max: 25.3p (16:30)
Avg: 6.6p
Avg Excl Peak: 4.0p
Peak 4pm-7pm: 23.8p
Get graphs & pricing for all 14 UK regions at
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This 10kW
@ViessmannUK
Vitocal 150-A heat pump that
@Damon_BPHR
has put in is performing like nothing else on the charts!!
COP 6.24 across the last 24 hours including a hot water run.
Which puts it straight to the top of the
@Openenergymon
charts.
Can't
So that’s a wrap! Finally got my hands on the
@ViessmannUK
Vitocal 150-A. Hope I’ve done it justice as it’s one of my favourite jobs I’ve ever done!
40°c flow temp at -3°c, 9 new rads, full flush and demin filled with
@thoroughflush
.
@Primarypro1
insulation.
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5
4
50
Here it is at last, the
@energystatsuk
Plant Room Project blog article.
How Mike,
@Damon_BPH
& I got a
@MixergyLtd
250L water cylinder installed along with other bits and pieces. 👍
@myenergiuk
Eddi
@Openenergymon
@SmarthoundUK
@OctopusEnergy
13
5
49
How to measure COP on a
@vaillantuk
Arotherm Plus Heat Pump.
Probably THE most frequently asked question.
So I've written up a blog post about how you can get that info from the heat pump itself.
Hope this is useful. Feedback welcome.
@energystatsuk
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11
48
It's with great relief I can announce that I survived and came through the
@octopus_energy
Agile record pricing week of December 2020 almost unscathed. By dumping into the battery overnight on the cheapest slots (and some into the EV) I averaged 8.4p per unit
@energystatsuk
😀
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3
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Big kudos to
@myenergiuk
My Zappi EV charger had random error message last week. Sent info to support, after remote diag they sent out a whole replacement unit & arranged a local installer to swap the unit out. Amazing customer support. Bravo
@JordeeBrompton
@energystatsuk
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3
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Not so much a lost classic, but one I've not heard in a long time, the Platoon C64 Music by Jonathan Dunn. An absolute joy to listen to this one again.
@C64Reloaded
@JudgeDrokk
@rhayadercompute
@FREEZE64UK
@EverythingC64
@4mat_scenemusic
9
6
45
Inspired by some followers, thought I'd give
@shelly_IoT
kit a whirl as a cheaper way of monitoring temperatures. Primarily thinking those wanting to track flow/return on their heating/boiler.
You can connect 3 X DS18B20 sensors to this 1PM unit with add-on.
@energystatsuk
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3
46
So here is the current plan. Vaillant Arotherm Plus 5kW.
Heat loss, system design & install by
@Damon_BPHR
.
Backed up as an 'Assured Install' by
@_heatgeek
Full
@Openenergymon
heat meter rig going in.
Super excited for late summer/early autumn. 👍
@energystatsuk
12
4
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Latest play thing,
@LocalBytesShop
UK 3 pin plug. Remotely turn on/off and see instant and cumulative power usage.
Connect to your wifi, point it at your MQTT/
@home_assistant
and away you go.
World's your oyster for triggers in HA. 👍
@energystatsuk
20
6
42
ASHP update. Still getting to grips with the unit & still tinkering with monitoring.
But the headline is....
"The ASHP MAGIC IS REAL".
😍
10C outside this morning, COP of 4.69
1kW elec in, 4.69kW heat out.
Gas combi boiler was
1kW gas in, 0.8kW heat out.
@energystatsuk
13
7
44
Feel awful for my mate
@Richschoey
here.
Let down by
@MCSCertified
,
@LGUK
,
@OFTEC
,
@TheConsumerCode
and the whole bloody system.
He had this 12kW LG Therma V heat pump installed before I knew anything about heat pumps or we knew
@Damon_BPHR
.
He did what joe public would
Twitter/X users,I need help please! I am close to ripping out this
@LGUK
ASHP after 2 years as no matter what
@Damon_BPHR
(who has been amazing) has done, we cannot get it to work correctly and the noise is shocking! I’m a massive fan of Heatpumps and after watching
@_heatgeek
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9
21
16
6
46
Remember when the loan
@flir
camera from
@octopus_energy
highlighted a particularly cold bay window? Zero insulation 1930's style. This remedial work should help for next winter. Note, another 25mm of PIR has gone in front to build the bay on the inside too. 👍
@energystatsuk
5
5
43
It was -4C in the back garden overnight, the coldest drop since we had the heat pump installed in October.
Happy to report no issues & heating at a COP of 2.74
It's now 2C outside and COP heading up towards 3.5. 👍
Love weather compensation. 😍
@energystatsuk
@Damon_BPHR
7
4
47
New article just published over on
@energystatsuk
"First winter with my air source heat pump"
Install by
@Damon_BPHR
Monitoring by
@Openenergymon
Facts, figures, COPS, running costs, solar, batteries,
@OctopusEnergy
Go tariff, DHW, defrosts etc etc
10
15
46
The ASHP in a light dusting snow!!! 🌨️
I might send this photo out as Christmas Cards this year!! 😆
Only down at 2C outside though, but still COP of 3 even with some defrosts.
@energystatsuk
6
2
43
A run of the mill January day with our 5kW Vaillant air source heat pump.
It ticks along on weather comp trickling in right amount of heat.
Avg outside: 6C
Electric In: 13kWh
Heat Out: 52kWh
COP: 3.99
@energystatsuk
Monitoring via
@Openenergymon
10
1
44
Anyone considering Solar and batteries as a reaction to this crisis?
@energystatsuk
17kWh generated yesterday and lovely full batteries meant imports were minimal.
Then heading into winter, charge the batteries overnight at 5p on Go.
20p-30p electric certainly hastens ROI.
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7
43
Sometimes it's good to remember the underlying motive of
@octopus_energy
Agile. It's cheaper when it's carbon cleaner. It's prohibitively expensive on purpose when the grid is carbon dirty. We had some 2p energy the other day when windy. Now we get this. All part of the fun. 👍😊
National average pricing for
@octopus_energy
Agile Tariff on Mon 24-08-2020
Min: 5.4p (00:30)
Max: 34.8p (17:30)
Average: 13.9p
Av Excl Peak: 11.2p
Cheapest 4hrs: 5.5p
Peak Time (1600-1900): 31.8p
Find graphs & pricing for all 14 UK regions via
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10
41
Heat Pump stats: Nov 2023
Electric In: 348 kWh
Heat Ouput: 1366 kWh
COP: 3.93
Heating COP: 4.5
Hot Water COP: 2.9
Outside Low: -2.5C
Outside Avg: 6.5C
Outside High: 13.2C
Solar Gen: 140 kWh
Avg Elec Import Price: 12p
(batteries, time of use tariffs, EV etc)
12p / 3.93 COP =
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8
42
With colder weather approaching I've updated my
@vaillantuk
Arotherm Plus Weather Comp Curve Info blog post over on
@energystatsuk
Tables now show
- indoor target temps of 18C through to 21C
- flow temps for curves 0.3 right up to 1.2
- outside temps
9
6
43
Excitement today. Got to talk to the owner of this Archimedes screw hydro-electric turbine that sits in the valley near our house. It's currently banging out 9kWh 24 hours a day. 😱 He's also got 6kW solar array on a near passivhaus.
@energystatsuk
@agile_phil
@g__j
@CarbonCoop
5
1
41
Have been working with
@Damon_BPHR
finishing off the heat loss report for our
@_heatgeek
assured ASHP install.
@energystatsuk
You can see via the attached how replacing rads with larger output ones (but mainly same dimensions) will allow us to really lower that flow temp. 👍
7
10
41
Generated 23kWh solar PV in the end. Filled the batteries, almost filled the
@MixergyLtd
cylinder via
@myenergiuk
Eddi. 3 loads of washing and drying. And only imported 3.5kWh at 5.5p per unit overnight on
@OctopusEnergy
Go Faster. Lovely
@energystatsuk
😍⚡️👍🌞
7
3
41
Perfect illustration how Solar & Batteries work on an overcast Oct day.
-Part charge overnight on low carbon/price energy.
-Battery covers AM
-A bit of sun in the day (6kWh)
-Lots of batt ins/outs thru day
-Enough in battery see us through evening
-Repeat tomorrow
@energystatsuk
2
3
41
Imagine you've got a V2G Vehicle to Grid charger with 50kWh of car battery on driveway.
Charge it overnight at 25p, not super cheap, but low co2.
Then force discharge back to the grid at an average of around £1.50 over a number of hours.
Helps you, helps the grid?
#future
😀
National average pricing for
@OctopusEnergy
Agile OUTGOING Tariff: Wed 15-09-2021
Min: 10.6p (22:30)
Max: 238.5p (19:30)
Avg: 40.9p
Outgoing Fixed: 5.5p
Get graphs & pricing for all 14 UK regions at
6
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12
7
39
Here's my 250L
@MixergyLtd
cylinder getting some lovely COP 3.73 overnight whilst heating water to target 51C when 5C outside.
And also a graph showing chopped DHW finishing at 45C return, like all the cool kids do. COP 4.05 😉
Regardless of cylinder type, if you want
8
2
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My
@energystatsuk
website is now 14 months old and visitor numbers still stagger me. What started as my own geeky little project has now been visited by over 50,000 people
#smarttariffs
#agileoctopus
#octopusgo
@SmartEnergyGB
@ng_eso
@octopus_energy
@g_j
5
5
39
Interesting ASHP observation today with front of house in full sun all afternoon. TRV kicked in closed down 3 big rads cos solar gain.
Result, less heat out for almost same elec in, so COP dropped from 3.7 this morn to 2.9 this aftern.
Volume in circuit matters a lot it seems?
16
2
37
Over a KW of solar being generated at 8am. That'll do nicely. Love it when spring starts to come around.
@energystatsuk
👍🌞⚡️
10
2
39
Our first motorway trip in the EV and I can confirm range anxiety is real. 😂 In the end, we couldn't trust the range indicator so dropped into a Starbucks on the way home. 35p/kWh though? 😱 That goes through you when your used to
@octopus_energy
Agile pricing. 😉
@energystatsuk
30
3
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WOOAH,
@RippleEnergy
project 3 is going to be a Solar Farm!! ☀️
Feel free to use my cheeky £25 bonus referral link if you wanna get involved.
Epic work from
@SpeakSarahSpeak
and the team!! 👍
@energystatsuk
2
6
37
Oh my word, it's like a long lost friend has unexpectedly come back into your life!?!??!
Tell me
@OctopusEnergy
Agile, where have you been all this time? 😂
National average pricing for
@OctopusEnergy
Agile Tariff: Sun 02-01-2022
Min: -2.5p (22:30)
Max: 35.0p (16:30)
Avg: 10.1p
Avg Excl Peak: 7.0p
Cheapest 4hrs: -1.0p
Peak 4pm-7pm: 31.2p
Fixed Tariff: 37.2p
Get graphs & pricing for all 14 UK regions at
5
0
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5
0
39
What is this sorcery & magic? A COP of over 4?
1 unit of electricity in for 4 units of heat out across a whole year?
But I keep hearing heat pumps don't work in retrofit?
Well here's a stone terrace house & it's performing like a dream with 3 years of data to back that up. 👍
Finally got around to finishing my 2021 heat pump performance and home energy review and also running the numbers for 2022 so far. Average COP for 2021 4.04 (up very slightly from 3.91 in 2020). Average COP so far in 2022: 4.1. Latest blog now online here:
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ASHP Stats: Dec 2023
Electric used: 414 kWh
Heat Output: 1704 kWh
COP: 4.11 (both heating and hot water)
Coldest outside: -4.7C
Average outside: 6C
Warmest outside: 12.7C
Average indoor: 19.9C
Heating COP: 4.32 (72% of heat produced)
Hot Water COP: 3.51 (28%)
Monitoring by
9
4
39
My best Solar day ever today, coming in at a whopping 30.8kWh.
Apart from filling the battery did naff all the rest of it. All straight back to the grid. 😥
Monitoring by
@Openenergymon
emonPi system.
@energystatsuk
6
4
39
Feb Heat Pump Stats
@energystatsuk
Heat & DHW.
Elec In: 390kWh
Heat Out: 1472kWh
COP: 3.77
Avg Outside: 6.6C
Solar: 189kWh (50% of heat pump load)
Import unit cost (Go, EV & Batteries): 12.6p
Unit cost for heat: 12.6p / 3.77 COP = 3.34p (gas now 8p?)
The tech works, 👍
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4
37
With today's news of the first Dogger Bank turbine going live it makes for an exciting future of what the Agile graph may grow to become when there's an abundance of wind? 😍🎢⚡️💨👍
National average pricing for
@OctopusEnergy
Agile Tariff: Wed 11-10-2023
Min: -4.5p (02:30)
Max: 42.1p (17:30)
Avg: 18.6p
Avg Excl Peak: 15.5p
Peak 4pm-7pm: 38.7p
Get graphs & pricing for all 14 UK regions at
1
5
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9
1
37
It's days like today where the holy trinity of Solar, Batteries and Heat Pump come into their own.
Solar driving the heat pump
Solar filling the batteries
Batteries jump in later
COP of 3.6 so far.
Electric in: 8.8kWh
Heat Out: 32.2kWh
@energystatsuk
5
1
38
Now the temp has dropped off I can play with the weather comp curve after the two rad changes
@Damon_BPHR
made in the summer.
Playing the
@_heatgeek
method of dropping the WC curve until you're cold. 🤣
Gambling on 0.3 curve right now. All rads, no UFH! 😱
Room 20C with 30C
10
2
36
Finally got round to plonking the
@_heatgeek
assured scheme sticker on my
@vaillantuk
5kW Arotherm Plus.
Designed, installed & commissioned by
@Damon_BPHR
, monitored by
@Openenergymon
.
Lovely grey Scame isolator by
@solarwholesaler
😉
@energystatsuk
4
3
35
Wow,
@forbes
has almost 16 million followers on Twitter and
@bazzacollins
mentions my
@energystatsuk
website in his article. 😮
The way my site has grown still baffles me.
Looks like people are really taking note of what
@octopus_energy
are doing with Agile?
@g__j
@agile_phil
Lower energy demand in the UK married with lots of sunshine and wind is providing us a crucial look at what a future green energy grid might look like.
Thanks
@bazzacollins
for the writeup on
#agileOctopus
in
@forbes
🤩
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23
51
3
8
36
Not sure why people are pointing the finger at
@OctopusEnergy
for this pricing. Agile has always been driven by the day to day wholesale price of electricity. This pricing is just a reflection of the underlying market right now. And what will likely come to fixed tariffs soon. 🤷♂️
National average pricing for
@OctopusEnergy
Agile Tariff: Thu 02-09-2021
Min: 22.0p (02:30)
Max: 35.0p (09:00)
Avg: 30.8p
Avg Excl Peak: 30.2p
Cheapest 4hrs: 23.3p
Peak 4pm-7pm: 35.0p
Std Var Tariff: 18.9p
Get graphs & pricing for all 14 UK regions at
9
1
3
8
3
35
What a way to start 2022....... negative pricing only occurred twice in the whole of 2021.
Agile is back baby....... but for how long? 😱
Love to see it though. I won't feel as guilty taking 5.5p energy on Go Faster tonight. 😀
National average pricing for
@OctopusEnergy
Agile Tariff: Sat 01-01-2022
Min: -4.8p (06:00)
Max: 35.0p (16:30)
Avg: 15.8p
Avg Excl Peak: 12.9p
Cheapest 4hrs: -3.1p
Peak 4pm-7pm: 34.6p
Fixed Tariff: 37.2p
Get graphs & pricing for all 14 UK regions at
2
1
22
10
3
34
Can't wait to dump this oversized 32kW combi boiler.
When 9C outside my house only needs about 2.7kW (needs 5.4kW at -3C).
My boiler can only output a minimum of 5.7kW
So it's always too big for the property, even at -3.
We need lower modulating boilers!
@energystatsuk
11
1
32
@MLiebreich
I've been doing this in my own house and Combi and tried to explain what it's all about on my
@energystatsuk
blog. Hopefully other households can maybe give this a go.
6
8
34
Here is Szymon (
@plumbers_urban
) smashing it out of the park again with another amazing Arotherm install.
Love how these videos are becoming more and more informational to help those that don't quite yet get low temp or open systems. Bravo!! 👍
3
2
36
Price Plunge Alert!!
Storm Bella brings huge amounts of wind power to the system so prices go negative on
@octopus_energy
Agile as the National Grid try to dump excess electricity!
Those that have stuck with Agile have been rewarded! 😀
#stormbella
#chargeallthethings
National average pricing for
@octopus_energy
Agile Tariff on Sun 27-12-2020
Min: -4.5p (02:30)
Max: 31.1p (17:00)
Average: 8.4p
Av Excl Peak: 5.2p
Cheapest 4hrs: -4.5p
Peak Time (1600-1900): 29.2p
Find graphs & pricing for all 14 UK regions via
9
9
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5
3
34
Merry Christmas Eve from the Agile tariff. 🎉🎄🎅🏻👍💨⚡️🔋
National average pricing for
@OctopusEnergy
Agile Tariff: Sun 24-12-2023
Min: -2.5p (06:00)
Max: 20.0p (16:30)
Avg: 2.8p
Avg Excl Peak: 0.4p
Peak 4pm-7pm: 18.9p
Get graphs & pricing for all 14 UK regions at
6
8
45
4
1
35
The other week
@agile_phil
from
@octopus_energy
got in touch asking about how popular my
@energystatsuk
website & Twitter feed have become and some of the story behind them both. I was more than happy to talk geeky! Here's the link to his blog article.
5
11
35
Only -3C low outside this morning, we have escaped the worst of the sub zero temps again.
Anyway, house still toasty with 40C flow temps in the rads.
COP of 2.8 from the heat pump, which is nice.
8kWh electric in, 22kWh heat out during that 5 hours.
3
1
34
Retro story. I played Wizball to death on the C64. I think we had it on for days on end in Micro Fun and I think me might have even completed it in shop. Ring any bells
@rhayadercompute
The beauty of working in a computer shop at weekends and in the school holidays. 😍
2
6
32
I headed over to
@LPodcastStudios
last week to talk with
@Simon_Heatio
on the
@heatio
podcast.
Part One is my renewable journey
Part Two is about
@energystatsuk
and tariffs.
Really enjoyed doing this. Hope I don't sound too much like a dork! 🤔🤣
“This is not a get-rich-quick scheme.”
🎙️Dive into
@heatio
's latest podcast with Mick Wall, the mastermind behind
@energystatsuk
!
Get inspired by Mick's (
@zarch1972
) journey in transforming his 1930s home with renewable tech.🏠
Available now on all major platforms.🎧
#Heatio
2
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I've poured a ton of time into this overhaul of the backend & website for my
@energystatsuk
hobby project. ⌨️
Definitely more time than my wife thinks is healthy I'm sure. 😆😍
But I just love being a geek and doing a bit of coding and tech in the evenings and weekends. 👍⚡🌞
The website is almost 4 years old now (wow!), so I thought it was time for a refresh and a lick of paint. 🎨
The site has been updated to now include all of
@OctopusEnergy
Agile, Go, Intelligent, Tracker, Flux, Cosy pricing and export tariff options.
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1
32
Fab family day at
@arcadeclubuk
Leeds today. Spent hours there but didn't get time to play all of it. Just so much choice on the 3 floors. Free parking and reasonably priced food and drink too. No need to leave once you're there. Will definitely be back. 🕹👍
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4
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It would seem we've missed the worst of the harsh temperatures here in Sheffield this week.
Only -3.2C seen in my back garden last night.
Our 5kW Vaillant Arotherm Plus still getting a COP of 2.6 at 44C flow temps.
Plus has plenty of headroom if went colder. 👍
@energystatsuk
1
4
30
You do have to question how deep your hobby/interest in renewables is going when you make the trek to the NEC at Birmingham for
@Installer_Show
. 🤪
Thanks to
@tomasmcguinness
for the great company today. 👍
Photo at the
@OctopusEnergy
stall, obviously. 🤣
@energystatsuk
7
1
30
I've been working on a new article for the website entitled; "what size heat pump?"
It's basically my sizing journey; ashp, rads, pipes etc.
Does anyone have a bit of time to provide some feedback on it?
Warning: it's a bit of a long article as I've gone deep with this one. 😂
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The benefit of having Solar, Batteries &
@myenergiuk
Zappi means that I've swerved much of the wholesale electricity price rises on
@octopus_energy
Agile tariff during April. Thanks to sunny days the EV and house have been 88% powered by Solar. Very happy
@energystatsuk
👍⚡️🌞
5
4
30
How accurate are the COP calculations on the
@vaillantuk
Arotherm Plus compared to a heat meter setup? Pretty good actually.
This is Dec 2022 (1st to 29th).
Vaillant COP: 3.23
@Openenergymon
COP: 3.35
Vaillant COP Calc
1348 + 602 = 1950 / 602 = 3.23 COP
@energystatsuk
13
3
31
Just seen that Commodore Breadbins have been used in the recent John Wick film. 😂
Nice thread on Reddit too.
If I ever made a film it would be littered with retro references. 😀
@C64Reloaded
@FREEZE64UK
@JudgeDrokk
@C64Audio
@EverythingC64
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4
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One month on
@OctopusEnergy
Go / Go Faster now and the effects are startling. Combining overnight charging of the batteries alongside small amounts of November Solar PV is working a treat. Both in terms of cost and carbon footprint. This is TOU tariffs in action.
@energystatsuk
3
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Crikey!!
@energystatsuk
just hit 3000 followers.
People obviously dig graphs and stuff. 🤷🏼♂️
Never imagined it would get anything like this.
Love it, thank you. 👍
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Spot the difference? 😀
Reasons heading into winter:
1. Increase charge/discharge rate from 2.4kW to 3.6kW.
2. Shorter days. More chance of seeing my through the night.
3. Less (to no) Solar past 4pm, so more battery to get through
@octopus_energy
Agile peak.
@energystatsuk
9
1
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It's back again, the
@OctopusEnergy
Agile tariff rollercoaster. 🎢
2 big peaks, 2 giant dips.
Battery owners rejoice. 🔋
Can't help but think this pattern becoming the norm as we expand our renewable portfolio? ⚡️💨🌞😍
National average pricing for
@OctopusEnergy
Agile Tariff: Fri 06-10-2023
Min: 0.0p (03:00)
Max: 35.2p (18:30)
Avg: 13.5p
Avg Excl Peak: 10.9p
Peak 4pm-7pm: 30.8p
Get graphs & pricing for all 14 UK regions at
1
0
11
10
4
30
Anyone else used to get pop from the Alpine pop van man?
#retro
@JudgeDrokk
@PeteMcKee
@neilsmithesq3
@paulnaylor13
@soulpurposeAD
10
10
30
Yeah,
@RippleEnergy
Project 3 is taking reservations.
Love this tempter.... "I understand that Ripple's next project may be a solar farm and that I can decide whether to join the next project when the share offer opens."
@energystatsuk
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