PV System

Fri, 02 Aug 2024 00:00:00 +0000

Goals Link to heading

The installation of a PV system to cover the energy needs for hot water preparation. Island operation is not intended.

Initial Situation: Link to heading

Boiler for hot water preparation: warmwasser-waermepumpe-wpa-450

Nominal power consumption ~1KW (heat pump)

Grid access 4KW

Implementation Link to heading

PV Planning: Link to heading

Integration into homeassistant
3.5KWp generator capacity
Existing open source project to read data from the inverter and integrate it into homeassistant
Integration of meter data into homeassistant
Microinverter to keep DC voltages in strings low

Components: Link to heading

homeassistant in Docker on existing Linux Nextcloud server
MQTT server in homeassistant
Data on NFS storages
Hoymiles Inverter HMS-1600 2x
OpenDTU DIAMEX DX-DTU-MAX, Gateway for Hoymiles 1x
Mitterbauer AMIS reader 1x
JA Solar Solar Module 435W Glass-Glass Full Black Bifacial 8x

Registration with NetzOOE: Link to heading

Since this system exceeds the generator capacity of 800W and is therefore not a balcony power plant, I registered the system with NetzOOE. This can be registered by an electrical engineering specialist who is a market partner with NetzOOE. If grid access is not exceeded, this is a relatively uncomplicated matter.