Economic assessment and grid impact of different sharing keys in collective self-consumption
Challenge and objective
New collective self-consumption scheme introduced in Norway, with two sharing keys for distributing generation: equal and based on yearly consumption.
Aim: investigate how the scheme affects the cost distribution within an energy community and quantify the grid impact.
Work performed
Economic analysis of virtually distributing the PV generation among members equally or based on yearly consumption. Analysis of one year.
Developed an optimization model that also accounts for shiftable loads and monthly peak power tariff.
Significant results
The largest cost reductions are obtained for the yearly consumption-based sharing key, especially when households have shiftable loads. Reduction in taxes and grid tariffs are substantial parts of the cost savings.
The maximum import is not reduced with the scheme, but in fact increased when households have shiftable loads.
Impact for distribution system innovation
Since the maximum import is equal or higher, while the income to the DSO is reduced, the scheme is likely to shift costs over to other end-users in the grid.
Oddbjørn Gjerde
WP2 Lead
+47 99 730 027
Name
Oddbjørn Gjerde
Title
WP2 Lead
Organization
SINTEF Energi AS
Reference in CINELDI
K. Berg, R. Rana, H. Taxt, and M. F. Dynge, "Economic assessment and grid impact of different sharing keys in collective self-consumption".
