Effect of Energy Storage on Self-Consumption and Self-Sufficiency: A Field Study in a Nordic Climate
Paper in proceeding, 2021

This paper examines the variation in self-consumption and self-sufficiency for eight residential-size solar photovoltaic systems under Nordic climate conditions. The work uses measured photovoltaic array performances with a 30-second temporal resolution and is evaluated for a full year’s operation. One of the systems is operated with battery storage to examine the effect on the system’s self-consumption and self-sufficiency, where the simulated load profile is taken from a single-family residential building in Sweden. The results show a consistent negative correlation between array size and self-consumption. The relation between array size and self-sufficiency is more sensitive and is also affected by the mix of PV technologies represented in the test. Adding battery storage increases the self-consumption in the range of 0-30 percentage points weekly. Furthermore, the variation of self-consumption and self-sufficiency follow the seasonal variation in solar resource and load size and illustrate the battery’s eventual redundancy in the winter when the battery’s objective function is to maximize self-consumption.

Battery Storage and Control

Storage.

System Performance

Self-consumption

Self-sufficiency

Author

Patrik Ollas

Chalmers, Electrical Engineering, Electric Power Engineering

Jon Persson

RISE Research Institutes of Sweden

Peter Kovacs

RISE Research Institutes of Sweden

EU PVSEC Conference Proceedings

2196-100x (ISSN)

1459-1463
3-936338-78-7 (ISBN)

38th European Photovoltaic Solar Energy Conference and Exhibition
Online, ,

Driving Forces

Sustainable development

Areas of Advance

Energy

Subject Categories

Embedded Systems

Energy Systems

DOI

10.4229/EUPVSEC20212021-6BV.5.16

More information

Latest update

1/31/2022