Análisis de las perspectivas de viabilidad del autoconsumo fotovoltaico en Extremadura

Abstract

The cost of photovoltaic installations has

dropped sharply during the last years. At the

same time, the price of electricity in Spain

has increased just as sharply. Both factors are

making possible that self-consumption with

photovoltaic systems may be economically

feasible soon in Spain and especially in

Extremadura, since this is a region with high

levels of solar radiation. If suitable policies are

promoted, this new scheme could provide a way

of savings for consumers and at the same time,

a significant boost for the PV industry.

In this paper, the economic feasibility of these

systems in single-family houses in Extremadura

is analysed. The methodological approach is

based on the definition of a type-home, and

then on the sizing and profitability analysis

of the PV system by considering different

regulatory scenarios.

The results indicate that acceptable

profitabilities could be obtained in 2015 for net

metering, when scenarios with sharp increases

in electricity prices are taken into account.

For less optimistic scenarios, net metering

and self-consumption with sale of the surplus

energy should be profitable in 2016 and 2017,

respectively. Morover, it is clear that self

consumption without sale of the surplus energy

is not profitable in housing.

The analysis also indicates that if the Spanish

Government were to approve the so-called

“support toll” then the profitability of

photovoltaic systems would be severely hit, and

it would be necessary, in the best case, to wait

until 2017 for the installations to be viable with

a certain guarantee of profitability.