IEEE Power & Energy Magazine - March/April 2015 - 75

Plant Factor for Each Solar PV Power Plant

0.30
0.25
0.20
0.15
0.10
0.05

(a)

December 2012

December 2013
(b)

014
September 2014

014
August 2014

014
July 2014

014
June 2014

014
May 2014

014
April 2014

014
March 2014

014
February 2014

014
January 2014

013
December 2013

013
November 2013

013
October 2013

013
September 2013

013
August 2013

013
July 2013

013
June 2013

013
May 2013

013
April 2013

013
March 2013

February 2013
013

Monthly Plant Factor

January 2013
013

0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0.00

December 2012
012

Plant Factor

Sa

lva

do

Ta
m

bo

R

ea
l
SD
rR
G
TS
x0
-E
1
sp
Li
er
an
an
o
za
de
Ll
am
po
Sa
s
n
An
dr
Sa
es
nt
a
D
C
ie
ec
go
ilia
de
Al
m
ag
PS
ro
PS
F
Lo
F
m
La
as
m
Po
a
C
zo
ol
or
Al
a
m
da
on
Po
s
te
zo
So
Al
la
m
r2
on
te
So
la
Lo
r3
s
Pu
So
qu
la
io
rE
s
lA
gu
ila
1

0.00

September 2014

figure 5. (a) The plant factor of existing solar power plants and (b) the monthly plant factor, December 2012-September
2014 (source: CDEC-SIC).

solar energy plants located in the Atacama Desert with a
total installed capacity of 200 GW. To accomplish this,
6,000 km2 or 15 locations measuring 400 km2 each would
be required. This represents less than 1% of the Chilean
continental surface and not quite 5% of the available space
in the Atacama Desert.
The technical challenges facing such a large deployment
of PVs in Chile include the variability of PV electricity supply as it relates to the need for firm and continuous supply
to mining facilities, as well as concerns about grid stability.
The first issue can be addressed using combinations of PVs
and concentrated solar power (CSP) with thermal storage,
PV and wind generation, PV and pumped hydro storage,
hybrid PV-diesel plants, and the use of small hydro generators as reserve capacity, along with controllable loads (mining pumping systems, desalination plants, pump storage, and
so on). In addition, demand response can concentrate energy
requirements during sunny hours. In a country with a longitudinal grid topology, concerns about grid stability can be
addressed by the PV industry and "grid-friendly" utilityscale PV plants employing power plant controllers, dynamic
march/april 2015

* Socioenvironmental
Development

Access to Water
*

* Local Industry/
Products

* Heat Production
(MW, MWh)
*
Green Chemistry
Based On Solar
Energy
* Electricity
Production
(MW, MWh)

figure 6. Multidimensional challenges for solar energy
development in Chile.

voltage power management, frequency droop control, and
fault ride-through capacity.
Figure 8 illustrates two generation expansion scenarios
for the Chilean interconnected power systems. If assumptions
about future investment costs for generation technologies are
ieee power & energy magazine

75



Table of Contents for the Digital Edition of IEEE Power & Energy Magazine - March/April 2015

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IEEE Power & Energy Magazine - March/April 2015 - Cover3
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