Resources that produce energy. Primary energy resources are petroleum, natural gas, coal, hydroelectric power, nuclear electric power, wood and waste, geothermal energy, solar thermal and photovoltaic energy, and wind energy.
Electricity is a secondary energy resource because generating plants use primary energy resources to generate electricity
Electricity obtained from nuclear, hydro and non-thermal renewables, but not from fossil fuels
Means the price at which oil products are sold to end users in countries such as the UK and Germany. The price of gas oil and fuel oil in such markets are popular escalators in gas pricing clauses, as from the buyers standpoint these are the products with which natural gas actually competes in the marketplace
Until recently many natural gas purchase agreements had a price ceiling and floor so that although a certain indexation was set to the base price for long term contracts, the price could never go up or down beyond a certain level. Producers are far more reluctant today to agree to such terms
A cap, or limit, on the price which may be charged for a commodity as is also sometimes the case in gas sales contracts
