Smart Home Solar Panel Integration Guide¶

Guide to integrating solar PV systems with UK smart homes covering inverter monitoring, solar surplus automation, battery charging optimisation, and energy dashboard integration with Octopus Agile.

Solar Panel Smart Home Integration Options¶

Solar panel installations have surged across the UK, with over 190,000 installations in 2023 alone. Integrating your solar PV system with your smart home unlocks the full potential of your renewable energy generation. The key components are the solar inverter with WiFi connectivity, a SMETS2 smart meter, and your smart home hub. Most modern inverters from SolarEdge, Sofar, and GivEnergy include WiFi modules that connect to manufacturer apps for real-time generation monitoring. However, the real power of integration comes from connecting this data to Home Assistant via APIs or Modbus, enabling automated actions based on generation levels. For example, when your solar generation exceeds 2kW, an automation can turn on the dishwasher, start the washing machine, and divert surplus to the immersion heater via a myenergi Eddi diverter. The Octopus Agile tariff integration adds another layer, automatically deciding whether to use solar power, grid power, or battery storage based on half-hourly pricing.

Solar Surplus Automation Strategies¶

Solar surplus automation ensures you use every kilowatt-hour your panels generate rather than exporting it to the grid at the Smart Export Guarantee rate of 5 to 15p per kWh. The myenergi ecosystem offers the most comprehensive solution: the Zappi EV charger automatically adjusts charging speed based on solar surplus, the Eddi diverter sends excess power to heat your hot water tank, and the myenergi app provides a unified dashboard. In Home Assistant, the GivTCP integration connects your GivEnergy inverter and battery, exposing real-time generation, consumption, battery state of charge, and grid import/export data. Create automations: if solar generation exceeds 3kW and battery is above 80%, start the tumble dryer. If generation drops below 1.5kW and the appliance cycle is complete, turn it off. This level of optimisation can increase self-consumption from the typical 40% without automation to over 80% with smart control, dramatically improving your solar payback period.

Specifications and Comparison¶

Solar Component	Smart Integration	Monitoring	UK Price	Best For
Solar inverter (Sofar, SolarEdge)	WiFi + app	Real-time generation	Included with panels	Generation monitoring
Smart meter (SMETS2)	DCC connected	Export/import tracking	Free from supplier	Tariff optimisation
Solar diverter (myenergi Eddi)	WiFi + app	Export to immersion heater	£400-£600	Using surplus for hot water
Battery inverter (GivEnergy)	WiFi + GivTCP/Home Asst	SOC, charge/discharge	£2,000-£5,000	Home Assistant integration
Energy dashboard (Home Asst)	RTSP, API, Modbus	Full system view	£100-£150 (RPi5)	Complete visibility

FAQ¶

Can my smart home automations use solar generation data?: Yes - Home Assistant with APIs from your inverter or GivTCP provides real-time generation data. Automate appliances to run when generation exceeds 2kW.
How do I maximise solar self-consumption?: Automate dishwasher, washing machine, and immersion heater to run 10am-3pm when solar generation peaks. Zappi EV charger auto-uses surplus for car charging.
Do I need a smart meter for solar export?: Yes - SMETS2 smart meter tracks export for the Smart Export Guarantee (SEG) payments. Octopus Outgoing Agile pays variable rates. Rates: 5-15p/kWh exported. For more information see our Smart Home Energy Saving Configuration Guide.

Last updated: 2026-05-31.

External Resources¶

For further information consult authority guidelines at the Which?.