IEEE Electrification Magazine - June 2017 - 21

450.0
400.0

Small ES

350.0

Large ES

(€/MWh)

300.0

133.56

250.0

56.92

200.0
150.0
100.0
0.0

Agathonisi
Antikithira
Othoni
Arkii
Erikousa
Donousa
Gaudos
Megisti
Anafi
Agios Efstratios
Kithnos
Serifos
Simi
Astipalea
Skiros
Mikonos
Amorgos
Patmos
Sifnos
Ikaria
Thira
Crete
Rhodes
Karpathos
Limnos
Siros
Lesvos
Paros
Kos
Milos
Samos
Chios

50.0

Weighted AVC
of ES (€/MWh)

Weighted AVC
of NIIPS (€/MWh)

SMP (€/MWh)

Figure 6. AVC per NIIPS in 2015.

The NIIPS Operator
Operation and management of NIIPSs is governed by the
current regulatory and legislative framework, including
relevant EU guidelines, which stipulate opening the

150
100

133.56
187.77
160.72
182.77

200

50
0

2014
AVC

2015
AFC

RES Cost

102.77
159.33
162.21
159.88

250
215.2
175.95
208.39

Aegean Sea islands are characterized by excellent
wind and solar potential, which has already led to considerable development of RES generation. Currently,
5,098 RES stations are in operation on all NIIPSs, with a
total installed capacity of 483 MW, as shown in Table 1
per NIIPS, comprising the following:
xx
97 wind farms (323 MW)
xx
1,758 ground photovolatic (PV) stations (136 MW)
xx
3,242 rooftop PV systems (24 MW)
xx
one small hydroelectric station (0.3 MW).
Installed RES capacity and contribution to the annual
energy balance of the islands present a steady growth rate,
currently reaching an aggregate level of around 19% for
all NIIPSs.
High investor interest for the deployment of additional
RES capacity is being demonstrated, including concentrating solar thermal power stations, biomass/biogas plants,
and geothermal stations as well as innovative applications
of storage in association with RES plants, known as hybrid
power stations (HPSs) (see "Management Code of Greek
Non-Interconnected Islands," S. Papaefthimious et al., and
S.V. Papaefthimious et al.).
Although nondispatchable wind and PVs may lead to
RES energy penetration levels of up to 25-30% (see, e.g.,
S. Korkizoglou et al.), recent studies performed on behalf of the NIIPS operator (see S. Papathanassiou et al.)
have demonstrated that, under the newly introduced
generation management framework (see the "Generation

164.44

RES Penetration

Management Principles" section), a total RES capacity
in excess of 1,000 MW can be hosted on the NIIPS, leading to a feasible potential for RES energy penetration of
around 50% of the annual load demand. High RES penetration levels can be achieved only via the integration
of dispatchable RES stations, while the introduction
of storage is the main enabling factor for the transition from the current RES energy penetrations of
around 20%, based only on wind and PVs, to a 50% level
and higher.

(€/MWh)

50% higher than the AVC of the substituted thermal energy.

2016
Total Cost

Figure 7. Mean annual generation cost of all NIIPSs, including
conventional generation cost, average RES compensation, and
aggregate total production cost.

IEEE Electrific ation Magazine / j une 2 0 1 7

21



Table of Contents for the Digital Edition of IEEE Electrification Magazine - June 2017

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