Build me a webserver , mobile app and ESP32 gateway Modbus.

Job ID: 33062013

Budget: €1,500 – €3,000 EUR

PLEASE READ WHAT I NEED before you make an price.

Hey i need logic that gateway will gives temperature. ON OFF command to HVAC. Logic should choose best price to heat building. Example normal temp 22c chosen by user. 24c (chosen by user) will be heated on cheap time. 22c should be kept on the median average electric price. 20c (chosen by user) should be kept on high price. If its possible to take consideration whether forecast.
https://www.nordpoolgroup.com/Market-data1/Dayahead/Area-Prices/ALL1/Hourly/?view=table

Mile stones:
Webpage on VPS etc
Schematic & PCB esp32 gateway Modbus or any other idea how to give command on HVAC