Customers who do not have an ESB Networks Smart Meter will be paid by a “Deemed Export Quantity” which is an estimation.
This estimation is based on an ESB Networks formula, of exported electricity in kWh: it will be used as a proxy for metered export data,
The formula to calculate Deemed export quantity = MEC x Capacity Factor x Export Factor x Provision Interval.
Where:
- MEC is a capacity value in units of kW, representing the generation capacity of the installed generation equipment, as declared via ESBN’s NC7 (or equivalent) form
- Capacity Factor is the ratio of average electricity produced to the theoretical maximum possible if the installed capacity was generating at a maximum for a full year. CRU have proposed this value is set at 9.7% for all technology types. It is the average capacity factor of photovoltaic panels
- Export Factor is the amount of electricity (expressed as a percentage of electricity produced) deemed to be exported, where the metered data is not available. CRU have set this value at 35%
- Provision Interval is the number of hours in the period for which cumulative export quantities are to be calculated and to be made available to suppliers by ESBN
Example of a deemed calculation:
Sample calculation for Deemed Export Quantity
Example: Commercial customer with an MEC of 50 and where the “Provision Interval” is 12 months (= 8760 hours)
Parameter |
Value |
Comment |
MEC (kW) |
50 |
As recorded by ESBN |
Capacity Factor |
0.097 |
9.7% as decided by CRU |
Export Factor |
0.35 |
35% as decided by CRU |
Provision interval |
8760 |
12-month interval |
- Deemed Export Quantity = MEC x Capacity Factor x Export Factor x Provision Interval
- Deemed Export Quantity = 14,870.1kWh (=50 X 0.097 x 0.35 x 8760)