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evcc: Smart Charge Your Electric Vehicle with Solar Energy
Open Source Smart EV Charging with Solar PV integration. Optimize your electric vehicle charging to maximize solar energy usage and minimize grid costs.
Go
Added on 2025年7月1日4,792
Stars925
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LanguageProject Introduction
Summary
This project is an advanced open-source solution for smart charging of electric vehicles. It focuses on integrating with residential solar PV systems to ensure EVs are charged cleanly and cost-effectively, prioritizing the use of locally generated renewable energy.
Problem Solved
Electric vehicle charging can be expensive and may draw heavily from the grid, potentially at peak times. This project solves the problem of inefficient charging by enabling users to charge their EVs using excess solar energy or during off-peak grid tariff periods, reducing electricity bills and maximizing solar self-consumption.
Core Features
Solar-Optimized Charging
Dynamically adjusts charging power based on real-time solar PV production and grid load/prices.
Broad Hardware Compatibility
Supports integration with a wide range of EV chargers, cars, and energy meters via various protocols (Modbus, MQTT, API, etc.).
Web Interface & API
Provides a user-friendly web interface and API for monitoring and controlling charging sessions.
Tech Stack
Go
MQTT
Modbus
HTTP APIs
TLS
Docker
Use Cases
evcc can be applied in various scenarios where intelligent and cost-aware EV charging is desired:
Maximize Solar Self-Consumption
Details
Configure evcc to only charge the EV when surplus solar energy is available, effectively using 100% solar power for mobility.
User Value
Achieve zero-cost, emission-free charging using your own solar power, reducing grid dependence.
Minimize Charging Costs
Details
Integrate grid tariff data to charge the EV primarily during off-peak hours, minimizing electricity costs.
User Value
Significantly lower electricity bills by leveraging favorable grid tariff structures.
Flexible & Reliable Charging
Details
Prioritize grid power during emergencies or when solar is insufficient, ensuring the car is ready when needed, while still optimizing for cost or carbon footprint.
User Value
Balancing renewable energy use with practical charging needs and availability.
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