Abstract
This study presents the results of an analysis of user acceptance of PV battery storage systems. A structural equation model is developed based on Davis’ technology acceptance model (TAM). It is expanded by integrating elements of Ajzen’s theory of planned behavior (TPB). The main factors influencing the acceptance of PV battery storage systems are evaluated and analyzed. Empirical findings indicate that survey participants’ acceptance of PV battery storage systems is mainly influenced by their behavioral beliefs, perceived knowledge about battery storage systems, perceived ease of use, and perceived usefulness of PV battery storage systems. The results indicate a high degree of acceptance for PV battery storage systems.
Highlights
More than two million PV systems with a nominal capacity of 54 GW have been installed in Germany under the Renewable Energies Act since 2000 (Wirth 2021)
Tenants and people living in apartments cannot invest in a PV battery storage system
In general, there is a high level of acceptance for battery storage systems
Summary
More than two million PV systems with a nominal capacity of 54 GW have been installed in Germany under the Renewable Energies Act since 2000 (Wirth 2021). While the costs for electricity generated by rooftop PV systems have declined drastically over time, the electricity prices for households were increasing (Kost et al 2018). As the remuneration for PV feed-in was adapted to the decreasing system costs, self-consumption became increasingly attractive (Wirth 2021). Prices for lithium-ion batteries have decreased by more than 50% since 2013 and continue to decline (Figgener et al 2018). Every second small-scale PV system has been installed with battery storage to increase self-consumption. Battery storage systems started being installed in numbers before profitability was reached, and the buyers stated that they were aware of that (Figgener et al 2018). Not all households install battery storage systems after profitability is reached, proving that there are other factors influencing adoption and acceptance. Different authors have evaluated the user acceptance of PV battery storage systems or asked for possible
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