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In this dissertation, I present three research articles on the economics of wind energy in Germany. The first two chapters primarily assess onshore wind energy’s empirical value in the wholesale market. The third chapter discusses the efficiency of the German wind support scheme. In the first chapter, a database on German onshore wind turbines installed was created by using a general method to fill incomplete stock data. By using the database and highly granular wind speed data, hourly infeed and annual market values of around 25,700 wind turbines in Germany from 2005 to 2015 were calculated, and its drivers – infeed-price-correlation and standard deviation of infeed – analysed. Further, the spread in market values on turbine level was shown, regional differences quantified and the effect of turbine age on market values discussed. Turbines in central Germany had, on average, lower market values than turbines in the north, south or west of Germany. Modern turbines reached higher market values than older turbines. The second chapter on wind turbines’ market values covers the period until 2019. This analysis confirmed that market values were highly diverse on turbine level. Further, it explained why the market value of a single turbine matters in the market premium model. In this context, the magnitude of the outperformance of technologically advanced turbines was assessed. Last, the effect of inter-annual weather variability on wholesale electricity prices and market values was quantified, using 19 different years of winds speeds and infeed data. In the third chapter, it was analysed whether the German wind support scheme incentivised a cost-minimal capacity build-up. Two cost-minimal benchmark scenarios were developed and compared to the historical capacity build-up between 1995 and 2015. The costs of the benchmark scenarios were significantly lower than those of the historical build-up. The benchmark cost reduction largely stemmed from greater efficiency in terms of using better wind sites. It was further shown that a spatially concentrated capacity-build up, as induced in the benchmarks, is beneficial from a consumer’s point of view.