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Cost Model analysis for the electrical integration of floating offshore solar parks with offshore wind parks

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English

In this report, a cost modelling analysis of combined offshore floating solar and offshore wind on the North Sea is presented. This analysis is presented as a part of WP7 of the H2020 UNITED project , which focuses on the multi-use of space in offshore wind farms, and investigates the potential benefits of co-use of infrastructure. This report use a offshore wind farm of 700 MW on the North Sea as test case, and studies three different integration concepts of offshore floating solar of 180 MWp; the SOLO concept, which is integrated at a wind farm substation level, the SEMI concept, which is integrated at an wind turbine array level, and the TOGETHER concept, which is integrated at the individual wind turbine level. These 3 concepts were selected using an earlier multi criteria analysis (MCA), based on cost, flexibility, reliability and environmental impact [1].

How to use this resource

The goal of this report is to evaluate the Levelized Cost of Energy (LCOE), Annual Energy Production (AEP), curtailment and space usage of the selected concepts, while examining the sensitivity of the most critical parameters. To this end, the ECN Cost Model is expanded with a floating solar module, and used to evaluate the case study for the 3 concepts. The analysis shows that: • The increase in AEP compared to a 700 MW wind farm by itself is 7.2% for all concepts • The LCOE of the combined system increases by 2 – 5 %, depending on the configuration. • The curtailment losses from combining offshore wind and solar in this case study are minor, with a maximum of 0.07% of the AEP curtailed. • The largest share of the cost of the floating solar concepts is from the cables, installation cost and floaters. Conversely, the cost of power electronics (inverters and transformers) has a relatively small impact on the overall cost (<5%).

Contributor(s)

Nikolaos Chrysochoidis-Antsos, Aki Pian, Max Houwing
TNO
iana.bakhmet@tno.nl

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