Below are the Release Notes with version numbers and recent changes. Most recent first.

v0.7.1393 2026-08-11

Multi PV planes now supported
Forecast charts show each array in its own shade, so you can see what each one contributes
Axle support, add Axle token under Advanced settings
When an Axle export event starts, Wonder Watt exports for you automatically
Axle events beat everything else: Intelligent Octopus Go, Agile (and Wonder Batt) all stand aside, so nothing charges your battery while you're being paid to empty it
Self-serve on WW subscription page: turn auto-renewal off/on, update payment card, view your subscription history directly on Paddle
Fixed Solax sign-in issue
Addressed FoxEss midnight span - Wonder Watt now automatically splits schedules

v0.5.1369 2026-08-07

Granular solar PV chart on homepage
Integration of expected solar PV against Agile slots, so users can make better judgements about charge/export decisions
More foundational work for Wonder Batt

0.5.1347 2026-07-22

IOG Pause functionality now resets Giv slot to 00:00-00:00 and sets AC charge flag to false

0.5.1345 2026-07-19

Clear inverter charge window when IOG pause is toggled to prevent stale charge schedules from running despite the pause flag
Make IOG pause instant by clearing DB schedule rows and excluding paused users from export schedule blocking

0.5.1335 2026-06-13

WonderBatt functionality prep
More robust persistence of Active/Inactive schedules and Pause saves

0.5.1327 2026-06-01

Added Solis integration
Added FoxEss integration

0.5.1256 2026-01-18

Introduced Rate Presets for custom Schedules.

0.5.1253 2026-01-15

Introduced global max charge/discharge rates. Opt-in, closed beta for now.

v0.5.1239 2025-12-08

IOG polling frequency changes (server fixes)
Paddle integration - more robust checks without chance of overwriting valid subs

v0.5.1183 2025-09-20

WhatsApp notification functionality added in Advanced section. Notifies on charge/discharge instruction errors.

v0.5.1156 2025-07-09

Fixed issue where Agile charge slots below set price would overwrite discharge slots. All discharge slots are now kept and take priority over charge slots when it comes to prepopulation.

v0.5.1146 2025-07-08

General availability of export/forced discharge slot selection on Agile page
Fix for edge case where Agile slots were skipped erroneously because it was treated like a retry

v0.5.1132 2025-06-28

Adds buttons to reset today's and tomorrow's export schedules, clearing selected discharge slots
Clear Agile discharge slots prior to auto population at around 16:35 for new Agile rates
Fixes issue with duplicate Agile discharge schedules leading to multiple same instructions/log entries
Implements logging for pause/unpause actions
Fixes an issue where AC Charge Enabled flag for GivEnergy inverters wasn't reset properly

v0.5.1120 2025-06-26

Agile Discharge slot UI fix - hour was offset by 1

v0.5.1118 2025-06-26

Consolidate Save and Undo changes buttons, simplify saving state and validation
Keep hold slots displayed during export view mode

v0.5.1116 2025-06-25

Fixed UI glitch for Agile Charge/Discharge toggling when not saving

v0.5.1114 2025-06-25

UI update for Agile export for select users - opt-in basis, prior to wider roll-out
Server functions for Agile export

v0.5.1106 2025-06-15

Allow Agile window "SOC less than condition" to be 101, to ensure even if battery is 100%, house load will consume from grid, not battery, which may be preferable in some instances

v0.5.1075 2025-04-15

Fix for Agile BST UI glitch on Today's tariffs

v0.5.1061 2025-04-06

AlphaESS integration, soft launch

v0.5.1053 2025-03-30

BST display fix

v0.5.1051 2025-03-28

Added setting allowing users to leave export enabled on inverter even when conditions haven't been met
Log when users are unplugging EV on IOG and reset should trigger
Fix IOG overlapping schedules, ignore IOG schedule end time if other schedule is running and not stopping in next X mins
Deactivate one-off schedule edge cases
Skip Export if we have IOG charge scheduled
Ensure we reset to default IOG window

v0.5.1025 2025-02-03

Fix for duplicate hold log entries for IOG
Make IOG functionality available for all users

v0.5.1017 2025-01-24

Fix for not sending Hold at new Agile Window boundary (14-Jan)
More defensive check around Giv LOST status (20-Jan)
Explicitly disable 'AC Charge Enable' flag when disabling charge schedules for Giv (21-Jan)
Added Activity Log CSV Download

v0.5.983 2025-01-09

Make sure Quick Discharge sets appropriate min discharge level as per inverter defaults

v0.5.981 2025-01-05

Change default settings for IOG schedule for new IOG users

v0.5.977 2025-01-01

Allow negative Max price for Agile charge windows

v0.5.975 2024-12-28

Reset time from/to back to 00:00 for Solax
Allow inverter serial to be updated/set for Giv/Growatt
Ensure Solax amp charge settings are pulled from user settings
Reset Giv discharge rate for end of IOG schedules when Hold set
Added edge case fix for schedule/window overlap, more unit tests added
Added 3 day grace period for paying users after subscription expiry, allowing them to change to annual sub after cancelling 3-month sub

v0.5.949 2024-12-02

CSS changes for Agile charge/hold slots, improved for dark mode
Auto save when successfully connecting new API keys
Solax fix, reset to self-mode after hold for charge instructions
Fix agile hold for window where it would overwrite charge instructions in some cases
Keep existing agile slots in place and recombine with auto-population logic
Added solar forecast yield display for today/tomorrow to dashboard

v0.5.928 2024-11-28

Added more robust longer term retry mechanism - for continuous agile slots, push time forward by 30 mins on any failure
Deal with edge case for agile windows end/start on midnight and not setting hold flag
Set hold charge for agile charge windows without charge slots
Added support for max price (in pence) setting for Agile charge windows

v0.5.915 2024-11-25

Reduce max amps to 30 as default for Solax
Add easier hhmm time inputs, automatically add colon ':' separator

v0.5.908 2024-11-19

Reformat IOG slots' endtime to round up to next 00/30 mins on the hour
Expose max charge amps for Solax
Implement retry policy for Solax instructions
Use separate calls for each Solax register

v0.5.900 2024-11-15

Interrupt IOG schedules at 58/59 and 28/29 mins mark, regardless of dispatch slots, to maximise the offpeak pricing for the remainder of the half hour when unplugging EV midway through
Growatt TLX - only set stop charge SOC for charge schedules
Make sure we don't send same IOG instruction twice within 5 mins
Log Solax API responses to charge/discharge instructions
Implemented granular pause controls for user schedules, Agile and IOG

v0.5.887 2024-11-11

Solax charge rate adjustment implemented (based on 32amp max)
Dark mode option in Menu

v0.5.883 2024-11-09

IOG fixes for default slot
Fix for Solax PV DC parsing
Growatt fix for TLX, set SOC upper back to 100 when disabling slots

v0.5.869 2024-11-08

Additional diagnostic logging for Solax connections to aid troubleshooting

v0.5.865 2024-11-05

Removed New badge from Subscription menu item
Fix of Agile Octo if pricing file isn't quite complete, overwrite on subsequent retry
Fix to prevent logout after deploy of new web app version

v0.5.859 2024-11-04

Fix for IOG issue where current default slot could be deleted
Auth login persistence - should prevent users having to login again after app refresh/redeploy
Added charge rate adjustment factor in Advanced

v0.5.855 2024-10-31

Growatt Connect fix in Settings section

v0.5.851 2024-10-28

IOG fixes for default schedule
Solax end charge disable fix
Hide message on dashboard for paying subs

v0.5.843 2024-10-27

UI fix for Octo - not displaying tariffs

v0.5.839 2024-10-26

For IOG slots <= 90 mins and adjust charge rate set, override to 100% charge rate
Fix for Solax for Agile charge hold to reset back to Self-Use mode after end of window
Fix for Octo Agile end schedule for users where automations are paused
For IOG slots <= 90 mins and adjust charge rate set, override to 100% charge rate
Export instruction sent 90 secs prior to export, instead of 5 mins
Fixed issue with Agile slots duplicate tariff for same time

v0.5.822 2024-10-22

Show WattID under version number in sidebar
Add first beta for Solax integration
Fix for end Agile slot scenario for Paused schedules

v0.5.813 2024-10-15

Delete future IOG schedules that were issued before but are now revoked and not in dispatch slots anymore
Fix bug with IOG unmapped slots causing schedule interruption for default IOG window

v0.5.809 2024-10-13

Longer retry for Giv instructions
IOG fix for disabling charging when unplugging car - and no dispatch slots are returned

v0.5.807 2024-10-11

Framework update
Settings connected msg tweak

v0.5.801 2024-10-10

Added distributed Auth state store, in prep for preventing to have to re-login after web app version updates

v0.5.796 2024-10-08

Consolidate logic for serial number to use Settings value always. Giv AIO LOST status ambiguity requires this.

v0.5.794 2024-10-07

Share Access functionality (with other Google account user) via share link in Advanced

v0.5.788 2024-10-04

Added hook to deal with cancellations correctly

v0.5.786 2024-10-03

Submenu layout tweaks
Better Activity logging for unsuccessful Giv HTTP status codes

v0.5.784 2024-10-03

Persisted state of submenu

v0.5.776 2024-10-02

Restructured and consolidated navmenu for Schedules and Octopus

v0.5.768 2024-09-30

Enabled payment integration

v0.4.764 2024-09-30

Payment integration backend changes
UI glitch fix for Agile On Hold 00:00.

v0.4.756 2024-09-26

Added Delete user account functionality
Added Giv Eco flag option for Agile charge schedules where Hold is set to 0 Watts

v0.4.752 2024-09-25

Auth cookie expiry change
Don't modify Giv discharge power at end of charge schedule

v0.4.749 2024-09-23

Fix for Giv AIO Gateway NULL SoC
Added one-off schedule functionality

v0.4.742 2024-09-20

Bug fix on end schedule for Giv - inc charge rate reset

v0.4.740 2024-09-16

Fixed issue where export Quick Schedule wasn't deactivated for Giv
General availability of Quick Schedule functionality

v0.4.734 2024-09-13

Fix IOG issue for reset charge rate/end schedule
Add logging for Quick Schedule and correctly identify end for Eco reset

v0.4.728 2024-09-12

Added QuickSchedule feature on dashboard - currently opt-in

v0.4.726 2024-09-04

One more Giv AIO SOC fix
Ignore Giv AIO products with status LOST - which leads to incorrectly picking out Gateway instead when it shouldnt

v0.4.720 2024-09-03

Fixed issue where Dual AIO wasn't returning/using gateway serial number
Fixed hold logging from % to W

v0.4.716 2024-08-31

Revert default for leaving Eco mode off for Giv export/discharge
Added setting in Advanced section to allow Giv users to change this behaviour

v0.4.714 2024-08-28

Fixed issue with IOG where inactive wasn't being honoured
Don't turn off Eco mode when exporting for Giv inverters

v0.4.708 2024-08-12

Charge to 100% for all Agile Charge slots when price is 0 or below 0 pence

v0.4.706 2024-08-12

Fix for discharge arrow styling/valign and fix to logic where eg. 19:30 end should not extend into 19:30-20:00 slot

v0.4.702 2024-08-09

Use red arrow indicators on the Agile Octopus timeline for any active discharge schedules

v0.4.698 2024-08-05

Fix for not stopping IOG charge when a broader slot is currently active

v0.4.694 2024-07-24

Ensure that IOG slots with end times that end before end of default window get extended to 5:30

v0.4.690 2024-07-17

Don't save IOG slots that fit fully within default IOG window

v0.4.688 2024-07-15

Fix for Agile charge window end instruction - exemption when agile charge slot is active

v0.4.686 2024-07-12

Order Schedules and Agile charge windows by Active flag, then Time From, then Name
Don't repopulate schedules for Agile charge windows that are updated whilst being (and remaining) inactive

v0.4.683 2024-07-10

Add indication of number of schedules and charge windows in use out of max available

v0.4.681 2024-07-10

Increased number of custom schedules from 5 to 20
Added support for 12 Agile Charge windows and ability to name them, allowing for seasonal windows to be configured, rather than reuse and overwrite window settings

v0.4.673 2024-07-03

More logging and improved exception handling for IOG API errors
Fixed issue where IOG error was ignored

v0.4.650 2024-06-18

Fix issue with adjacent agile charge slot after existing agile charge window (with hold) end
Reset to Eco mode for IOG charges for Giv users
Fix for validation around discharge rate readout for Giv - added more unit tests

v0.4.642 2024-06-17

Fix for Giv Export issue related to discharge power

v0.4.640 2024-06-17

Option for Giv users to use current discharge rate or 100% for export schedules

v0.4.637 2024-06-13

Greater margin for eco-reset and disable after Giv export
Fix for Intelligent Octopus Go schedule normalisation

v0.4.634 2024-06-12

Make sure we disable Growatt custom schedule charge slot after it ends

v0.4.632 2024-05-27

Fix log msg for Timeout/Offline inverter scenario

v0.4.628 2024-05-26

Delay Octo charge to next slot for adjacent block if inverter offline or timeout error occurred

v0.4.626 2024-05-24

Fix for few Growatt TLX inverters that return Wh rather than kWh

v0.4.624 2024-05-21

Ensure errors for hold charge instruction end up in Activity Log

v0.4.618 2024-05-21

For Agile blocks with adjacent charge slots, if battery 100% or higher than configured threshold, delay start by 30 mins, at which time condition will be checked again.

v0.4.616 2024-05-20

Fallback for Giv LOST inverter status

v0.4.614 2024-05-14

Fix for inverter serial selection for Giv - include WAITING status.
Prep work for solar yield correction factor.

v0.4.611 2024-05-13

Pick correct Giv inverter with 'NORMAL' status in Settings page. Fixes issue where previously decommissioned inverters would be picked even though they had 'LOST' status.

v0.4.609 2024-05-10

Added validation for 'Battery is at least' field

v0.4.607 2024-05-06

Create default IOG slot for null mapped dispatch slots
Delete future IOG slots where no existing dispatch slots are found - typically after unplugging EV

v0.4.590 2024-05-01

Make sure we save default Intelligent Octo settings after account details are saved

v0.4.583 2024-04-30

Added Intelligent Octopus Go support (can be enabled for users who want to opt-in)

v0.4.581 2024-04-25

Added thin blue line around Agile hold slots
Added start and end arrows under slots indicating start and end of active Agile charge windows

v0.4.579 2024-04-25

Foundational work for Octo Intelligent
Specify serial from saved settings for Growatt so we display correct energy flow details on dashboard home

v0.4.574 2024-04-22

Make sure we disable 00:00 and 00:30 tomorrow Agile slot 10 mins before they start

v0.4.571 2024-04-17

Fix where upon selecting DNO region on Agile Octo page, the control would disappear before user can save
Tariff colour tweaks

v0.4.568 2024-04-17

Fixed defect where users with Region code empty would mess up some end charge window functionality for other users

v0.4.566 2024-04-16

Moved DNO region to Advanced when it is set
Added Agile tariff colours and Advanced setting to toggle off

v0.4.562 2024-04-15

Change and simplification to populate user schedule function - only running this once at 16:35 ish. Now uses same logic that is applied when togging schedules to active in UI.

v0.4.558 2024-04-14

Fix for issue where at population time if we were in an active user window today, this same window would not populate slots for tomorrow.

v0.4.554- 2024-04-12

Function scheduler operation error issue - caused a few hours scheduling gap leading up to midnight
Added improved monitoring/alerting

v0.4.551 - 2024-04-11

Fixed defect where adjusted time to override wasn't set back properly, resulting in missing eco-reset after export

v0.4.549 - 2024-04-11

Skip population of below threshold slots for 22 and 23 run

v0.4.543 - 2024-04-11

Run populate schedules at 20 mins to 23:00 and 20 min to 00:00
Fixed issue with prepopulation when current date/time is within a window with schedule charge slots that have already passed

v0.4.536 - 2024-04-09

Fix for Agile hold charge issue where we're at the end of the charge window
Greedy selectio6n for Agile start time - to time period
Modified condense schedule function so it splits on midnight. Fixed issue with saving 23hh slots for today

v0.4.530 - 2024-04-08

Fix for schedule within window where both span midnight
UI glitch fix where making Agile charge window inactive didn't deselect slots for the window

v0.4.526 - 2024-04-07

Keep 'global' AC charge setting to enabled for Growatt - when disabling charge schedule(s)

v0.4.524 - 2024-04-07

Sort out issue with Agile end charge and Hold Start.

v0.4.522 - 2024-04-06

Fix for UI glitch where full continuous charge block which started today and ended tomorrow was not being displayed

v0.4.520 - 2024-04-04

Ensure greedy (longest continuous) charging slot is returned to determine hold set

v0.4.518 - 2024-04-04

Remove additional UtcBst mapping causing double conversion for Octo Agile slots

v0.4.516 - 2024-04-04

Additional fix to condense schedules - and added more unit test coverage

v0.4.514 - 2024-04-04

Fixed bug with condensing schedules which was preventing population of agile charge windows

v0.4.511 - 2024-04-04

Fixes to check whether time is in Agile User window
Agile schedule calculation tweak for condensed schedules - filter out same starttime
Add extra SOC check against Stop condition for export

v0.4.504 - 2024-04-03

Fixed save issue when switching between pages
Added separate Save DNO button

v0.4.500 - 2024-04-03

Use date time offset for UTC now - for dynamic behaviour around isBst() check
Prevent Agile slot duplication, side effect of UTC/BST time comparison, might also resulted in duplicate log messages and multiple instructions being sent

v0.4.497 - 2024-04-02

Fix delete schedules edge case when toggling Agile charge window to inactive

v0.4.495 - 2024-04-02

Fix end of window time delta for Agile charge windows

v0.4.493 - 2024-04-02

For agile charge slots, ensure time for activity log message is correct

v0.4.489 - 2024-04-01

Fix on Active toggle in Agile Octopus window grid
Improved error handling around population of Agile slot schedules

v0.4.485 - 2024-04-01

Bunch of fixes, updates, refactoring and unit tests for UTC -> BST issues

v0.3.474 - 2024-03-30

Delete selected agile slots in Agile Charge windows when they get toggled to inactive

v0.3.472 - 2024-03-30

Fix for lenient parsing of BST datetimes when clocks go forward, this was causing this morning's issues with schedule charge instructions not being sent
Added additional custom exception handling in some loops to minimise users affected when issues come up

v0.3.468 - 2024-03-29

Improve error handling on dashboard when energy flow details cannot be retrieved

v0.3.466 - 2024-03-28

Added active toggle button in Schedules list directly
Added Active toggle switch to Agile Charge window grid

v0.3.463 - 2024-03-27

For equally lowest priced agile slots, choose later ones, rather than earlier ones as default
Replaced grid icon

v0.3.461 - 2024-03-26

Various style tweaks for energy flow diagram
Added Last Updated for energy flow diagram
Fix discharge issue in flow diagram for some Growatt users

v0.3.449 - 2024-03-26

Added System Energy Flow diagram on home/dashboard.
Ensure we populate Agile charge windows without selected slots that have start times in the past but end times in future

v0.3.446 - 2024-03-25

Fixed bug with Pause schedules check which caused issue for agile charge automations

v0.3.444 - 2024-03-24

Only show percentage allowable discharge when not equal to 0% for hold charge enabled
Honour Pause Schedules setting for Agile charge windows too
Fix to display/UI for selected charge slots that were not displayed with blue/selected border where start time falls outside of tariff ranges available, ie. started yesterday, but finishes today

v0.3.441 - 2024-03-21

Don't repopulate slots for inactive charge windows
Fixed issue for Giv where Soc Less than condition (if SOC >= SOCLessthan) didn't cause a true hold charge instruction
Fixed scheduled exports - now calculates an adjusted end time (visible in activity log) based on current SOC, stop SOC, and max discharge rate, then returns to Eco / disables schedule

v0.3.436 - 2024-03-10

Move Active toggle closer to time from-to window
Added SOC values and hold charge to Agile window grid

v0.3.432 - 2024-03-09

Added fixed target SOC setting for Agile charge window.

v0.3.430 - 2024-03-09

Fix to Discharge percentage not being passed in some cases for Agile hold charge slots
Add unsuccessful HTTP status code condition to retry policy for Giv
Add retry attempt 15 mins later for pulling new agile tariffs when not directly available at around 16:05
Hide 0.0 kWh for agile charges, as it's currently not being used

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