Application of liquid-air and pumped-thermal electricity storage systems in low-carbon electricity systems
File(s)
Accepted version
Author(s)
Georgiou, S
Aunedi, Marko
Strbac, G
Markides, Christos
Type
Conference Paper
Abstract
In this study, w
e
consider
two medium
-
to
large
-
scale
electricity storage systems currently
under development, namely ‘Liquid
-
Air Energy Storage’ (LAES) and ‘Pumped
-
Therma
l
Electricity Storage’ (PTES). Consistent t
hermodynamic models and costing methodologies for
the two
systems are presented
,
with the object
ive of integrating the
characteristics of these
technologies in
to
a whole
-
electricity system assessment model
,
and
assess
ing
the
ir
system
-
level
value
in different scenarios for power system decarbonisation
.
It is found
that the value of
storage varies
greatly
depending on the cumulative installed ca
pacity of storage in the
electrical
system, with
the s
torage technologies provid
ing
greater marginal benefits at low p
enetrations
.
T
wo carbon target scenarios showed similar results, with
a
limited effect of
the
carbon target on
the system value of storage (although
it is noted that
this may change for even more ambitious
carbon targets). On the other hand, the location and installed capacity
of storage plants
is
found
to have a
significant
impact on the syste
m value and acceptable cost of the
se
technologies.
The
w
hole
-
system value of PTES was
found
to be slightly higher than
that of
LAES, driven by
a
higher
storage duration and efficiency,
however, due to the higher power capital cost of PTES,
this becomes les
s
attractive for implementat
ion at lower volumes than LAES.
e
consider
two medium
-
to
large
-
scale
electricity storage systems currently
under development, namely ‘Liquid
-
Air Energy Storage’ (LAES) and ‘Pumped
-
Therma
l
Electricity Storage’ (PTES). Consistent t
hermodynamic models and costing methodologies for
the two
systems are presented
,
with the object
ive of integrating the
characteristics of these
technologies in
to
a whole
-
electricity system assessment model
,
and
assess
ing
the
ir
system
-
level
value
in different scenarios for power system decarbonisation
.
It is found
that the value of
storage varies
greatly
depending on the cumulative installed ca
pacity of storage in the
electrical
system, with
the s
torage technologies provid
ing
greater marginal benefits at low p
enetrations
.
T
wo carbon target scenarios showed similar results, with
a
limited effect of
the
carbon target on
the system value of storage (although
it is noted that
this may change for even more ambitious
carbon targets). On the other hand, the location and installed capacity
of storage plants
is
found
to have a
significant
impact on the syste
m value and acceptable cost of the
se
technologies.
The
w
hole
-
system value of PTES was
found
to be slightly higher than
that of
LAES, driven by
a
higher
storage duration and efficiency,
however, due to the higher power capital cost of PTES,
this becomes les
s
attractive for implementat
ion at lower volumes than LAES.
Date Issued
2018-09-16
Date Acceptance
2018-06-22
Citation
2018
Copyright Statement
© 2018 HPC. ©2018 The Author(s).
Sponsor
Engineering & Physical Science Research Council (EPSRC)
Natural Environment Research Council
Grant Number
EP/J006041/1
NE/L002515/1
Source
Heat Powered Cycles - HPC-2018
Publication Status
Published
Start Date
2018-09-16
Finish Date
2018-09-19
Coverage Spatial
Bayreuth, Germany