evcc

evcc is a self-hosted energy management and EV charging controller that optimizes charging based on photovoltaic (PV) surplus power, household consumption, and electricity price signals. It integrates with many wallboxes/chargers, energy meters, inverters, and home batteries to automate cost- and CO₂-aware charging.

Key Features

• PV surplus charging modes (e.g., eco/solar-only vs. fast) with automatic phase switching where supported
• Broad device integrations via built-in “templates” (chargers, meters, PV inverters, home batteries)
• Dynamic tariff support and price-aware charging (where supported by your utility/provider)
• Web UI dashboard for live power flows, charging status, and configuration
• Multi-vehicle and multi-charger support (site-dependent) with scheduling and charging limits
• Data logging and export/monitoring integrations (e.g., Prometheus-compatible metrics)
• Runs as a single service suitable for Raspberry Pi/home servers; configuration via YAML

Use Cases

• Automatically charge an EV only when PV surplus is available to maximize self-consumption
• Minimize charging cost by shifting charging into low-price periods from dynamic tariffs
• Monitor and control household energy flows (grid import/export, PV generation, battery) alongside EV charging

Limitations and Considerations

• Feature availability depends heavily on supported hardware (charger/meter/inverter) and selected templates
• Some advanced behaviors (e.g., phase switching) require specific chargers/vehicles and electrical setup

evcc is best suited for households that want fine-grained control of EV charging integrated with home energy systems. With its large integration catalog and flexible modes, it can automate charging to match solar production and/or electricity prices while providing a clear real-time dashboard.