The San Juan plant uses cogeneration for power generation. Which kinds of contracts with producers make cogeneration attractive and why? The San Juan plant can recover up to 98% of the ethane and can...

The San Juan plant uses cogeneration for power generation. Which kinds of contracts with producers make cogeneration attractive and why?

The San Juan plant can recover up to 98% of the ethane and can profit by selling the liquids. When, if ever, would it be more profitable not to maximize ethane recovery?