The spread that relates the revenue received from selling electricity to the cost of producing it from coal. This spread...

The spread that results from power minus coal and carbon costs. That is this spread captures the profit realized by...

A spark spread that captures the gross margin reflecting the economics of a coal-fired power plant. More specifically, it refers...

An option on the dark spread, i.e., on the gross margin from electricity generated using coal. More specifically, this option...

An energy swap that involves the exchange of the dark spread, i.e., the variable primary energy price of coal and...