  PowNet is a free modelling tool for simulating the Unit Commitment / Economic
Dispatch of large-scale power systems. PowNet is specifically conceived for
applications in the water-energy nexus domain, which investigate the impact of
water availability on electricity supply. To this purpose, PowNet is equipped
with features that guarantee accuracy, reusability, and computational
efficiency over large spatial and temporal domains. Specifically, the model (i)
accounts for the techno-economic constraints of both generating units and
transmission networks, (ii) can be easily coupled with models that estimate the
status of generating units as a function of the climatic conditions, and (iii)
explicitly includes import/export nodes, which are often found in cross-border
systems. PowNet is implemented in Python and runs with the help of any standard
optimization solver (e.g., Gurobi, CPLEX). Its functionality is demonstrated on
the Cambodian power system.
