05.07.2009

The difference between Ron (see Ron) and Mon (see Mon)

The measure of the propensity of fuel to self ignite under conditions of pressure and heat. There is no connection between the octane number and the amount of energy

A flammable liquid hydrocarbon found in petroleum

Differences in the temperature of layers of the ocean potentially useful for running a heat engine

Process of identifying potential obstacles

Refers to the requirement that a utility provide electric service to any customer who wants that service and has the means to pay for it. In some cases, it extends to include customers who need that service but are unable to pay for it. Traditionally, utilities operating as regional monopolies have been placed under an obligation to serve as a means of insuring universal access to essential services. Where this obligation is imposed by regulation or a negotiated agreement, it is usually accompanied by an additional obligation to make a suitable quantity and quality of energy available to its customers. Obligation to serve is not a universally-applied concept; not all customers in deregulated markets may be entitled to receive the service they received under regulation, and in fact customers in some regions may not be entitled to any type or quality service