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OpenEVSE WiFi Emoncms EV Charging Station (DIY KIT)

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  • *mobile device not included
  • Installation example (cable holster not included)
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  • OpenEVSE Web interface: services config page
  • OpenEVSE web-interface advanced view
  • OpenEVSE Safety features
  • Solar PV 'diversion' using OpenEVSE with latest WiFi software
  • OpenEVSE charging NissanLEAF
  • Finished assembly
  • OpenEVSE V4 Charge Controller
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£304.80 (inc VAT) £254.00 (exc VAT)
1,400.00 Grams
Calculated at checkout

OpenEVSE is a fully open-source EVSE (Electric Vehicle Supply Equipment) charging station designed by OpenEVSE. OpenEnergyMonitor have been collaborating with OpenEVSE to improve Emoncms remote data logging integration and web UI control. 

An EVSE charging station, is a device an electric car (EV) is plugged into to charge. It communicates with the car to agree on a charging rate that is the fastest and safest rate both the car and the power supply can support.

Caution: this unit is a kit, assembly requires wiring Alternating Current (AC) components that will be exposed to voltages up to 250v. If you do not have the experience and knowledge required to safely work with AC voltages please consult with an experienced electrician for assistance and inspection of your work.



  • 32A Level 2 (240V) 
  • Variable charge rate: 6A-32A (in 1A increments)
  • Single Phase 
  • RGB Colour Status LCD display 
  • Power monitoring: session & all-time
  • Session controls: time limit, energy limit (KWh limit)
  • Charging timer schedule using built in RTC 
  • Control via RAPI serial API
  • OpenEVSE V5 Controller
  • IP68 waterproof 


  • WiFi connectivity (optional):
  • UI web-control interface
  • Eco mode: automatically adjust charging rate depending on available power e.g. Solar PV diversion**
  • Emoncms data logging
  • MQTT control & data logging
  • Remote control via HTTP & MQTT RAPI API
  • WiFi OTA firmware updating
  • Physical dmensions (rear): 260 mm x 130mm 

** Solar PV divert requires emonPi solar PV monitor (or another MQTT solar PV data source). See OpenEVSE WiFi setup guide

Required Extras 


OpenEVSE units have been designed to exceed the safety requirements for EV Charging Stations from SAE J1772, NEC and UL. Before supplying power to the car (and continuously while charging) the EVSE unit conducts a number of checks, no power is supplied until all the checks have passed.

  • Power interlock
  • Pilot signal
  • Ground monitoring
  • Ground fault interrupt
  • Welded contact detection 
  • Temperature throttling
  • EV ID check 
  • Ventilation check 


Read more: 


Build & Setup Guides




Related Resources

Open Source Resources 

Product Videos

EV Charging At Home With OpenEVSE (Review) (15:34)
Despite using OpenEVSE hardware for years, I've never actually done a review... until now! The folks over at OpenEVSE were kind enough to give me one of their Advanced Kit Bundles for review--enjoy! Since people have been asking, yes, I made the stop motion sequences myself and this video is actually the first time I've attempted stop motion animation. If you'd like to learn more about OpenEVSE or purchase any of their products, check out their website: https://openevse.com Want to know more about my custom OpenEVSE build? Check out the video: https://youtu.be/nzn817mDs1g EV & Tesla related shirts can be found on my Teespring store: https://teespring.com/stores/squidrage-store Drop me a line on Twitter if you have any questions or whatever: https://twitter.com/PTPetra If you're buying a new Tesla (S, X, or 3), feel free to use my referral code & receive 1000 miles of free Supercharging: http://ts.la/alex4511 Music by Joakim Karud http://youtube.com/joakimkarud Disclosure: The creator of this video is a Tesla owner and is long $TSLA. Additionally, OpenEVSE provided the featured charging station kit, upgraded OpenEVSE components, and an emonPi free of charge for review purposes.
  • EV Charging At...
    Despite using OpenEVSE hardware for years, I've never actually...

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