I have been looking at the Rapi for the OpenEVSE is it possible to send a HTTP Rapi command to enable “eco/solar” mode?
Also they is a dead link on the page
RAPI commands can be used to control and check the status of all OpenEVSE functions. RAPI commands can be issued via the direct serial, web-interface, HTTP and MQTT. We recommend using RAPI over MQTT.
A full list of RAPI commands can be found in the OpenEVSE plus source code.