In this section, we present the main results of this article. We solve the quadratic hedging problem for European electricity swaptions. The basic challenge here is to hedge an infinite-dimensional object with a small, finite set of assets. The portfolio may only contain contracts which are available for trading, namely swaps with various delivery periods. Thus, it is inherent to the problem that we will not obtain a perfect hedge, even in a pure diffusion model.
We first discuss the stochastic dynamics of the swaps in our portfolio and state the partial integro-differential equation (PIDE) satisfied by the swaption price. These results are then used to derive a representation of an optimal hedging strategy. Finally, we show that our solution can be interpreted as a generalization of the optimal hedge in a one-dimensional jump-diffusion model.