Economic impact of PV forecast inaccuracies on a corporate parking charging infrastructure

The number of electric vehicles is increasing exponentially and there is a high need for charging infrastructure. Furthermore, climate change motivates for the integration of renewable energy. Therefore, a DC-coupled charging station connected to photovoltaic and a stationary battery system is being researched for a workplace environment. The component sizes are economically optimized for 20 charging points. The influence of a simple photovoltaic persistence forecast on the marginal charging tariff and the self-sufficiency is analysed depending on the component sizes. It is shown, that the positive influence of implementing a self-consumption maximizing charging strategy outweighs the monetary losses of forecasting inaccuracies. ... mehrThe decrease in self-sufficiency compared to a perfect PV forecast for a system without a stationary battery is 1 percentage point versus an increase of 20 percentage points compared to uncontrolled charging. Although systems without a battery are more economic, it is also shown, that systems with a battery can become economic for larger PV sizes.

The number of electric vehicles is increasing exponentially and there is a high need for charging infrastructure. Furthermore, climate change motivates for the integration of renewable energy. Therefore,
a DC-coupled charging station connected to photovoltaic and a stationary battery system is being researched for a workplace environment. The component sizes are economically optimized for 20 charging
points. The influence of a simple photovoltaic persistence forecast on the marginal charging tariff and
the self-sufficiency is analysed depending on the component sizes. ... mehrIt is shown, that the positive influence
of implementing a self-consumption maximizing charging strategy outweighs the monetary losses of
forecasting inaccuracies. The decrease in self-sufficiency compared to a perfect PV forecast for a system
without a stationary battery is 1 percentage point versus an increase of 20 percentage points compared
to uncontrolled charging. Although systems without a battery are more economic, it is also shown, that
systems with a battery can become economic for larger PV sizes.