Impact Of The Subsidy On The Electric Rate
In The Use Of Renewable Energy For
Net Zero Housing In Mexicali, Mexico
Author(s)
R. Gallegos, E. Tapia & S. Romero
Abstract
The city of Mexicali, located in the Northwest of Mexico, has a hot extreme
climate, with maximum temperatures of up to 48oC, so the use of air
conditioning systems is a necessity for the realization of human activities. But
the intensive use of these systems brings with it high consumptions of electric
energy, so billing is very expensive for the majority of the population. For this
reason, the city has a subsidy by the State in the electricity tariff, allowing users
to allocate less of their income to pay for the service. In this context, the State
agency that produces and distributes electric power has developed mechanisms
to allow domestic cogeneration using photovoltaic systems of up to 3 kW. This
paper describes the design and simulation of a net zero house interconnected to
the grid for users of middle class. The first task was to reduce energy
requirements for air conditioning through the use of appropriate materials and
construction systems, use of natural lighting, changing the type of lighting
and thermal insulation. Subsequently the photovoltaic system is designed and an
estimate of the recovery time of the investment is done. The results show that
with the levels of subsidy rate, the net zero housing scheme is not able to recover
the investment in the life time of the project. If the rate were not subsidized,
investment is recovered in the fourth part of the life time; approximately five
years. It is concluded that for this sector of the population the State could
allocate the amount of the subsidy for those five years to finance PV systems and
eliminate the subsidy, the amount of which may be used for social works. An
additional benefit would be the incentive to the use of renewable energy in the
country.
Keywords: net zero housing, renewable energy, domestic cogeneration.
Keywords
net zero housing, renewable energy, domestic cogeneration.
Related Book
Other papers in this volume
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