Master's Thesis Andjey Hartl

 

The use of household battery storage for the provision of primary control power. A techno-economic analysis.

Resulting SOC boundaries Copyright: EBC Resulting SOC boundaries for the provision of primary control power by household batteries: Standard (left) and proposed control strategy (right)

Despite the constant falling costs of PV hardware and perpetually rising grid take-off prices, nowadays installed roof-top PV system are smaller and less rentable as a few years ago. Since the cost parity between battery stored energy and grid take-off hasn’t yet been achieved, the operation of household batteries for self-consumption only is still not economically viable. This work offers an alternative path: The use of household battery storage for the provision of primary control power. The proposed concept opens additional sources of revenue, on the one hand as supplementary income for storage operators and on the other hand as business model for winning and binding customers through energy assets. The concept proposed in this work is based on a household intern electric and thermal pooling strategy, augmenting the overall energy capacity and thus, reducing the share of electric capacity to be reserved. With the objective of enabling the use of common household batteries, the strategy provides a solution that on the one hand, supplies reliable services and on the other hand, operates with little to no noticeable self-consumption lost.