A simple script to pull data from a vcontrold daemon and push it into a carbon instance.

Optolink adapter -> vcontrold -> vitographer -> carbon -> graphite -> grafana

scale(scale(summarize(scale(scale(scale(vitodens.performance, 0.01),1.82), 11000), '1d', 'avg'), 24), 0.00006335)

• 0.01 - vitodens.performance ranges from 0 to 100% -> map to interval [0,1]
• 1.82 - factor I came up with to address the deviation between measured value and real value
• 11000 - 11kW (my gas heater's max power)
• summarized average value per day (in Watt hours)
• 0.00006335 - € per Watt, i.e. 6.335 cent per kWh

• http://openv.wikispaces.com/