Ultimate EMS

Ultimate EMS turns your Homey Pro into a full-featured energy management system. It intelligently coordinates your solar panels, home battery, EV charger and heat pumps to maximise self-consumption and minimise energy costs. Every evening the EMS calculates a detailed plan for the next day based on the weather forecast, expected solar production and your energy prices. During the day it follows this plan in real-time, adjusting automatically when clouds roll in or your energy use changes. Key features: - Works with your existing Homey apps — no custom drivers needed - Multi-inverter support with per-phase surplus tracking (L1/L2/L3) - EV charging via Zaptec, Easee, Tesla and other supported chargers - EV departure planning with target SoC and solar-priority logic - Heat pump and air conditioning control with seasonal heating/cooling switching - PV curtailment for Growatt inverters (zero-export / export limit) - Dynamic tariff support: Tibber, PBTH/Enever and other price providers - Live dashboard widgets for EV status and PV fleet overview Supported devices: Ultimate EMS works through the Homey apps you already have. It reads the data of 150+ devices and, where the Homey app allows it, controls them too. A selection that is confirmed working: Alfen, Easee and Zaptec (EV chargers), Tesla (EV), Zendure, Sessy, Marstek and Victron (home batteries), Growatt (inverters, zero-export) and HomeWizard (meters). The full list is at https://ultimate-ems.com/supported-devices. For every device it shows whether it is confirmed working, read-only (data only, no control) or still an open point.