Analysis 03: Future Scenario—OWF Development Within German EEZ - On the Effect of Offshore Wind Farms on the Atmosphere and Ocean Dynamics - page 124

Chapter 6
Analysis 03: Future Scenario—OWF
Development Within German EEZ

Political commitment regarding offshore wind energy supply asks for offshore
demands in the German North Sea, precisely within Germany s exclusive economic

zone (EEZ). There exist different scenarios for the EEZ utilization in the future,
summarized in LOICZ report 2010 (Lange et al. 2010 ). At this juncture, the
so-called scenario B1 is the most interesting one for this study here. Scenario B1
defines the EEZ as an energy park separated into different stages of expansion of
offshore wind turbines. An energy supply of 30 GW is politically planned till 2030,
but that amount is not limited, and it cannot be excluded that further OWF
expansion will be commissioned. Regarding the available areas within the EEZ,
it is concentrated on one of the strongest possible realizable expansion called
B1-2030much . Such an expansion shall supply around 90 GW of energy. The
North Sea areas covered by wind turbines based on the scenario B1 and the
expansion

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is illustrated in Fig. 6.1 . The specified area equates to
8,590 10-MW wind turbines in the atmosphere model METRAS, being set in a
horizontal distance to each other by 1,990 m. Hence, the wind turbines are evenly
spread over the OWF district.
This chapter shows the effect of such extreme amount of wind turbines in the
North Sea and its dynamical and hydrographical conditions. Simulations are based
on the setup North Sea simulations (TOS-02 in Sect. 3.3.2 ) and include two
different ways of case studies. Case study I focuses on the effect of different
wind directions; case study II considers the effect of OWFs under real meteorolog-
ical conditions of June 2010. Anticipatorily, the model results based on expansion
scenario B1-2030much does not simulate changes of the general North Sea circu-
lation; that is why result presentation and analysis are focused on the area close to
the OWFs where the OWF effects are identified (Fig. 6.1 ).

' 2030much '