What are the differences between the MCS and Easy PV self-consumption calculations?

There are a few differences between the Easy PV and MCS self-consumption calculations:  

 

 

 

 

   ​ easy-pv.co.uk MCS 

 Easy PV 

 

 

 Easy PV task 

 

 Completed at the end of Performance task , select MCS in Financial task to use 

 

 

 Completed in Consumption task , select Easy PV in Financial task to use 

 

 

 

 System size and consumption 

 

 Strict limits:  

 

 Consumption: 1500-6000kWh 

 Generation: <6000kWh 

 Usable battery capacity: <15.1kWh 

 

 

 

 No limits on system size or consumption. Any consumption, generation or battery capacity 

 

 

 

 Consumption profile 

 Domestic profiles only: home all day, home half the day and out all day 

 

 Domestic or commercial consumption profiles. Plus the option to upload half-hourly data from customer 

 

 

 

 Method 

 Determines self-consumption based on look-up tables specified in MGD 003, using annual generation and consumption totals 

 Models how generation is distributed using PVGIS data, then calculates usage minute-by-minute across the entire year. 

 

 

 Additional options 

 Limited since it only compares annual figures and cannot factor in real-time changes. 

 Minute-by-minute calculation means export limits , inverter clipping , variable tariffs and forced charging/discharging of batteries  are factored into calculations