LPG represents a key phase in the transition to advanced modern fuels, replacing traditional fuels and kerosene. In most countries, this transition is virtually complete at per capita household incomes greater than US$2,000. When/if natural gas becomes available through the establishment of local distribution networks as the economy matures, LPG is itself usually displaced. However, LPG often remains the main fuel for residential/commercial heating and cooking in rural areas remote from the natural gas grid. In most developing countries, the distribution of natural gas to residential customers is unlikely to become widespread for many years, if ever at all.
LPG is well positioned to assist developing countries in the transition to modern fuels for the following reasons:
Availability. There is nothing exotic to invent or improve. The transportation system that moves it is in place, the tanks to store it are available, and the appliances and equipment that provide heat and power are "on the shelf".
Portability. LPG can be stored, transported and used virtually anywhere from downtown urban areas to remote regions of the globe. It is not dependent on natural gas or electric grid systems.
Infinite shelf life. LPG does not deteriorate over time unlike some other liquid fuels that gel, stratify or evaporate. In the context of rural energy shelf life is critical, as traditional fuels can have a short shelf life and must be protected from the weather to prevent deterioration.
High energy density. Compared to traditional fuels in terms of weight equivalency, LPG has ten times the energy.
Flexible temperature control. LPG appliances and equipment allow easy and instantaneous adjustable flame temperatures to suit the needs of consumers. LPG refrigerators do not have temperature control limitations common to kerosene refrigerators, thus maintaining the "cold chain" essential for critical vaccines used in primary health care.
Environmentally friendly. It burns cleanly without smoke or residual ash, thus avoiding the health hazards associated with indoor use of traditional fuels. In the event of a leak, LPG does not contaminate the soil or aquifers.
Compatible and flexible. LPG is not only compatible with renewable energies as discussed herein but also with new technologies such as fuel cells and micro turbines.
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