andreaciri/smart-grid-pi

Control heat pump smart grid input based on solar panels production from a Raspberry Pi

Smart Grid Pi

This repository contains the code that runs on a Raspberry Pi to control the Smart Grid Ready input of a heat pump, based on the current electricity production of a solar power system.

What is Smart Grid Ready? SG Ready heat pumps can be controlled to increase the temperature set-point when the electricity is cheaper or when there is a surplus of power from a PV system.

The program collects every REFRESH_TIME_SECONDS seconds the measurements of domestic power generated and consumed from the SolarEdge monitoring API. When the power surplus is greater than MIN_POWER_SURPLUS_WATT then the heat pump is set in "Recommended ON" state.

Environment variables

REFRESH_TIME_SECONDS = 15
MIN_POWER_SURPLUS_WATT = 2000
SOLAREDGE_API_BASE_URL = https://monitoringapi.solaredge.com
SOLAREDGE_API_KEY = your-solaredge-api-key
SOLAREDGE_SITE_ID = your-solaredge-site-id

You can find your SolarEdge Api Key and site ID from the SolarEdge web dashboard settings.

My components

• PV Inverter: SolarEdge SE5000H
• Heat pump: Mitsubishi Ecodan SUZ-SWM80VA (external) - Hydrotank ERST20D (internal)
• Board: Raspberry Pi 3 Model B
• Relay: AZDelivery KY-019