Despite the worldwide popularity of CDD- and HDD-type weather derivatives based on temperature, a different class of weather derivatives, so-called summer day options, is more popular in Japan; the payoffs are determined by the number of summer days (i.e., the days whose average temperature is...

This paper proposes a new volatility model for energy prices using the supply-demand relationship, which we call a supply and demand based volatility model. We show that the supply curve shape in the model determines the characteristics of the volatility in energy prices. It is found that the...

We analyze the transition probabilities of regime switching in electricity prices by explicitly incorporating the underlying demand/supply structure. We show that the transition probabilities of electricity prices cannot be constant, and depend on both the current demand level relative to the...