A framework for joint management of regional water-energy ... - Orbit

5 Results and Discussion
The main findings of the study are summarized and discussed in this section.
The first three sub-sections correspond to the work presented in the three scientific
papers. Potential impacts of climate change on the Iberian power system
are presented in Section 5.1; a method to improve the representation of
hydropower benefits is presented in Section 5.2; the influence of spatial aggregation
on water-power analysis is shown in Section 5.3. The main limitations
of the study are discussed in Section 5.4.
5.1 Climate change impact on power system of the IP
The goal was to assess some of the potential impacts of climate change on the
Iberian power system under its current state. This was achieved by solving
the optimization problem using a climate change scenario that contained data
on potential future inflows, irrigation demands, and power demands. The expected
change on these input series is shown in Figure 6.
Solving the SDP in (1) and calculating the derivative of the costs with respect
to the reservoir level (10) provides a water value table (WVT) that indicates
the expected value of a marginal amount of storage in the reservoir. Figure 14
shows the WVT for the control (a) and climate change (b) scenarios as a
function of the week of the year, the reservoir level, and the inflow state.
Figure 14. Water value tables for a) control and b) climate change scenarios [€/MWh].
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