Joining the Renewable Heating Hub forums is completely free and only takes a minute. By registering you’ll be able to ask questions, join discussions, follow topics you’re interested in, bookmark useful threads and receive notifications when someone replies. Non-registered members also do not have access to our AI features. When choosing your username, please note that it cannot be changed later, so we recommend avoiding brand or product names. Before registering, please take a moment to read the Forum Rules & Terms of Use so we can keep the community helpful, respectful and informative for everyone. Thanks for joining!
Axle - £1 per kWh!
Just seen this from Gary Does Solar.
Discuss! Toodles.
Toodles, heats his home with cold draughts and cooks food with magnets.
Interesting concept, but it looks to be limited to the same inverter brands as the smart Octopus control tariffs, which currently doesn't include Sunsynk systems.
It also doesn't require a change of supplier, so appears to be additional to the export rates already being paid by your existing supplier, which would make it something of a no-brainer to sign up for, if eligible, and you were happy to relinquish control in this way.
I'd be interested if and when my inverter became compatible.
130m2 4 bed detached house in West Yorkshire
10kW Mitsubishi Ecodan R290 Heat Pump - Installed June 2025
6.3kWp PV, 5kW Sunsynk Inverter, 3 x 5.3kWh Sunsynk Batteries
MyEnergi Zappi Charger for 1 EV (Ioniq5) and 1 PHEV (Outlander)
User of Havenwise (Full control Jun-Dec 2025, DHW only from early Dec)
Subscriber to MelPump App data via CN105 Dongle Kit
@toodles I watched with interest too.
My first thoughts was that it would be a good addition to run alongside/in addition to Cosy in winter (I still plan to run IOF in summer). Even in a worse case scenario you'd get £1 + 12p per kWh for export and then have to draw from the grid at 30p or peak rate 45p, rather than just consuming your own battery. That seems like a can't lose deal that can only enhance the net financial position.
The obvious down side is you have no idea how many events there will be per week/month, so have no way to evaluate against other tariffs such as IOF. In summer I still prefer IOF, and knowing how much I'm going to generate in export each month. Getting an average 25-26p per kWh for ALL export on IOF outweighs 12p SEG and an additional £1/kWh on a small amount of export for me. This tariff (Axle) would also favour those with unlimited export, who can maybe export 10kW in a one hour window as I'm guessing most events will only last 1h (that seemed to be in implication). Obviously if your export rate is limited, this will limit earnings potential of each event and all other export is just paid at standard SEG rates.
For my own usage, I estimate IOF will net me an additional £370 during the 6 months April to Sept compared to Cosy+SEG, so even if I could average 5kW export per 1h event, I'd need 3 events every week exporting 5kW per event to match IOF.
Samsung 12kW gen6 ASHP with 50L volumiser and large radiators. 7.2kWp solar (south facing), Tesla PW3 (13.5kW). Net Zero
- 27 Forums
- 2,775 Topics
- 65.4 K Posts
- 1,305 Online
- 7,181 Members
Join Us!
Installer Finder
Degrees of Separation
Latest Posts
-
RE: Who's your electricity provider and what's your tariff?
@papahuhu I was just checking the Cosy Fixed rates agai...
By Old_Scientist , 1 hour ago
-
RE: Review your electricity provider
Happy to add Scottish Power and the review 'dont touch ...
By JamesPa , 4 hours ago
-
RE: Analysis of the economics of switching to an A2W ASHP compared to other heat sources
@rob-of-york Very sound analysis, albeit for a curre...
By JamesPa , 20 hours ago
-
RE: Is it just me, or does tradesperson timekeeping and communication drive you absolutely mad?
Yes, and I would suggest likely to get worse with more ...
By Batpred , 2 days ago
-
RE: Electricity price predictions
This topic seems more suitable for this thread... I a...
By Batpred , 2 days ago
-
RE: Why are ASHP installs so expensive?
It is clearly difficult to say, there must be cases whe...
By Batpred , 2 days ago
-
RE: Panasonic Free Multi Z and Etherea Internal units.
@dgclimatecontrol Thank you for that information and re...
By Toodles , 2 days ago
-
RE: My Kronoterm Adapt 0312 ASHP is finally installed!
@editor It was serendipitous really. Both my wife and I...
By tomasmcguinness , 2 days ago
-
@mrkfm, I'd also suggest that whenever you're ready, st...
By Mars , 3 days ago
-
RE: Are you planning to use a wood burner to supplement your central heating this winter?
I use my stove daily for backup and comfort. Definitely...
By Margarethomas , 3 days ago
-
@rob-of-york Thanks. I wish I'd started on this site as...
By mrkfm , 3 days ago
-
RE: Solar Power Output – Let’s Compare Generation Figures
@downfield I just checked this morning and OE just r...
By Papahuhu , 3 days ago
-
RE: Passiv Smart Thermostat - Help & Forum Support
Thanks Will. I'll probably be a week or so before get...
By Singlespeed , 4 days ago
-
RE: Cooling using an air to water heat pump
From experience this summer, a single-split A2A unit on...
By Rob of York , 4 days ago



