Abstract
This deliverable assesses the impact of several key performance indicators (KPIs) for the demonstration activities carried out in Use Cases (UCs) 4 and 5 in the Lighthouse Island of Bornholm.
Use Case 4 demonstrated the feasibility of a DC microgrid acting as a hybrid fast charging station for electric vehicles. This deployed intervention featured a novel battery system architecture and a photovoltaic installation, and was located at an educational institute in Rønne on Bornholm over a period of 15 months. This report gathers the main numerical outcomes and analyses the impact on key metrics such as EV charging fulfillment, carbon emission reduction, and self sufficiency. Over the entire demonstration phase with this hybrid charging station (HCS), 2008 EV charging sessions were recorded, amounting to a total charged energy of 21.8 MWh. An overall proportion of 37.7% of the energy delivered to EVs was provided by the local PV system, defining the system’s self-sufficiency. Furthermore, 90% of the total energy provided by the local PV system was utilized for EV charging, defining the system’s self-consumption. The operational CO2 emissions of the HCS amounted to 2092 kgCO2, which is a reduction of around 1 ton CO2 compared to a charging system without local PV system (3,094 kgCO2), and a reduction of 14.5 tons CO2 compared to the emissions caused by ICE vehicles (17,649 kgCO2).
Use Case 5 aimed at demonstrating flexibility aspects of distributed generation units to support the electrical, thermal, and transportation sectors. The focus of the investigation has been a biogas plant located in Aakirkeby, Bornholm, both for simulation studies and experimental tests. Moreover, the controllability of other distributed generation units, such as wind and solar PV, has been experimentally assessed within the demonstration activities. The last part was concerned with more hypothetical scenarios of how different units located at the substation of Aakirkeby could be coordinated together to supply multi-energy demands. The different analyses in UC5 showed that currently deployed units already provide high potential for short-term flexibility activations. For islands, the ferry connection to the mainland is often one of the biggest contributors of CO2 emissions. Here, hydrogen may play a significant role in helping decarbonise this means of transport, either directly or through hydrogen-based derivatives. The work in UC5 demonstrates that electrolysers integrate well into the thermal and electrical energy balances, while providing hydrogen for hard-to-electrify applications. Yet, the local production of hydrogen/methanol could only provide a small share of the ferries’ demand on Bornholm, without a strong expansion of renewable generation capacity.
Use Case 4 demonstrated the feasibility of a DC microgrid acting as a hybrid fast charging station for electric vehicles. This deployed intervention featured a novel battery system architecture and a photovoltaic installation, and was located at an educational institute in Rønne on Bornholm over a period of 15 months. This report gathers the main numerical outcomes and analyses the impact on key metrics such as EV charging fulfillment, carbon emission reduction, and self sufficiency. Over the entire demonstration phase with this hybrid charging station (HCS), 2008 EV charging sessions were recorded, amounting to a total charged energy of 21.8 MWh. An overall proportion of 37.7% of the energy delivered to EVs was provided by the local PV system, defining the system’s self-sufficiency. Furthermore, 90% of the total energy provided by the local PV system was utilized for EV charging, defining the system’s self-consumption. The operational CO2 emissions of the HCS amounted to 2092 kgCO2, which is a reduction of around 1 ton CO2 compared to a charging system without local PV system (3,094 kgCO2), and a reduction of 14.5 tons CO2 compared to the emissions caused by ICE vehicles (17,649 kgCO2).
Use Case 5 aimed at demonstrating flexibility aspects of distributed generation units to support the electrical, thermal, and transportation sectors. The focus of the investigation has been a biogas plant located in Aakirkeby, Bornholm, both for simulation studies and experimental tests. Moreover, the controllability of other distributed generation units, such as wind and solar PV, has been experimentally assessed within the demonstration activities. The last part was concerned with more hypothetical scenarios of how different units located at the substation of Aakirkeby could be coordinated together to supply multi-energy demands. The different analyses in UC5 showed that currently deployed units already provide high potential for short-term flexibility activations. For islands, the ferry connection to the mainland is often one of the biggest contributors of CO2 emissions. Here, hydrogen may play a significant role in helping decarbonise this means of transport, either directly or through hydrogen-based derivatives. The work in UC5 demonstrates that electrolysers integrate well into the thermal and electrical energy balances, while providing hydrogen for hard-to-electrify applications. Yet, the local production of hydrogen/methanol could only provide a small share of the ferries’ demand on Bornholm, without a strong expansion of renewable generation capacity.
| Original language | English |
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| Publisher | INSULAE |
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| Number of pages | 38 |
| Publication status | Published - 2023 |
