I’ve been working on it for a bit, and it’s been controlling my car and HWS well today. I’ve heavily inspired by PV Excess Optimizer but as an addon to help simplify configuration.
The addon will attempt to respond in real-time to your grid usage to optmise controllable loads (EV Charger, pool pump, HWS etc) in response to solar generation and other loads.
It’s functional, but certainly the CSS could use a bit of polish, and a number of features aren’t supported yet (Home battery, run once, overnight charging etc). I’ve looked at predbat and emhass but found the predictive nature of them too challenging to set up. I want something that just responds to the sunlight available.
I tried using the latest version (1.3.68), but unfortunately, I couldn’t get it to work.
Here’s the output from the log when starting the service:
[09:04:56] INFO: Starting solar optimiser service...
[09:04:56] INFO: Contents of /data before operations:
total 12
drwxr-xr-x 2 root root 4096 May 18 09:04 .
drwxr-xr-x 1 root root 4096 May 18 09:04 ..
-rw------- 1 root root 27 May 18 09:04 options.json
[09:04:56] INFO: Setting data directory permissions...
[09:04:56] INFO: Setting file permissions...
[09:04:56] INFO: Final data directory state:
total 12
drwxr-xr-x 2 root root 4096 May 18 09:04 .
drwxr-xr-x 1 root root 4096 May 18 09:04 ..
-rw-r--r-- 1 root root 27 May 18 09:04 options.json
s6-rc: info: service legacy-services successfully started
nginx: [alert] could not open error log file: open() "/var/lib/nginx/logs/error.log" failed (13: Permission denied)
2025/05/18 07:04:56 [emerg] 111#111: mkdir() "/data/nginx/tmp/client_body" failed (2: No such file or directory)
s6-rc: info: service legacy-services: stopping
[07:04:57] INFO: Service restart after closing
s6-rc: info: service legacy-services successfully stopped
s6-rc: info: service legacy-cont-init: stopping
s6-rc: info: service legacy-cont-init successfully stopped
s6-rc: info: service fix-attrs: stopping
s6-rc: info: service fix-attrs successfully stopped
s6-rc: info: service s6rc-oneshot-runner: stopping
s6-rc: info: service s6rc-oneshot-runner successfully stopped
It seems like there’s a permission issue or a missing directory (/data/nginx/tmp/client_body).
The service starts and shuts down immediately afterward.
Looking forward to an update – and thanks a lot for all your hard work!
