PERÚ - Observatory for Renewable Energy in Latin America and

Perú- Products I and II
1.3.11 Installed Capacity in the National Interconnected Electrical System
In terms of installed capacity and electricity generation, the SEIN represents 97 %
and 93 % of the Peruvian electricity market, respectively; with isolated systems
covering the rest of the country. Therefore to analyze the Peruvian electricity
market it only would be necessary to mention the SEIN. The generation supply of
the SEIN is set in terms of effective capacity, considering the last one as the
nominal power in MW of the generating groups which is “punished” by a factor
that takes into account the operating conditions of the location like the
environmental temperature, the height above sea level where the station is
located, among others. To March of 2011, the effective power of the SEIN was
6 428 MW, of which 3 111 MW (48,4 %) correspond to renewable technologies
and 3 328 MW (51,6 %) to non renewable technologies. In this case, 2 519 MW
are generated by natural gas stations which represents 39,2 % of the total, as it is
indicated in Graphic Nº 13. In the low water period that shows up between May
and October of every year, the available hydroelectric supply decreases in 22 %
by the reduction in the water resource availability. (COES, 2010).
Graphic N° 13: Effective Capacity in the SEIN (2011)
1.3.12 Electricity Generation by Type of Technology at a National Level
The electricity generation is principally hydrothermic, this means that the energy
that covers the country’s demand comes from the use of hydraulic power and
fossil fuels. From the last ones, natural gas is used in higher rates. (MEM, 2009b).
In addition, there is a little fraction of the electric power that is generated from
biomass (bagasse) which is less than 0,2 % of the total country’s production
(MEM, 2011i) and is obtained of the productive processes of the sugar refineries.
Finally, in a smaller quantity, it is generated electricity with solar energy
(photovoltaic panels), which implementation has taken place fundamentally to
meet social commitments assumed by the State, with facilities dispersed through
the whole country and whose individual capacity does not surpass the megavatio.
During 2010, the total power generation in the electricity market was 35 736
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