The main sources of energy used in hotels are electricity
(for air conditioning, lighting, appliances, water
heating and water pumping), LPG (for cooking), diesel
oil (for diesel generator), and coal (for heating and as
boiler fuel). Electricity dominates the total hotel energy
consumption, while fuel (gasoline) for transport is very
small as compared to others and could be neglected.
Fig. 2 shows the breakdown of energy use in Vietnamese
hotels. The energy use patterns of 2- and 3-star
hotels, where electricity is used for around 90% of
energy consuming activities, are nearly the same, while
LPG is the main fuel for cooking in 4-star hotels and
resorts. Generally, the 4-star hotels and resort consume
much fuel (fuel oil, diesel and LPG for boiler, diesel
generator and cooking, respectively); some charcoal is
also used for outdoor parties in resorts. Some 3-star