Ref. Ares(2021)4296942 - 01/07/2021
Italian Power System
Adequacy Conditions - Winter 2017-2018
1
ISC – Uso Riservato
Supply-demand balance evolution
In recent years, the Italian Power System has faced a
Evolution of the Thermal generation fleet
significant reduction of the installed conventional
generation capacity.
[GW]
The significant amount of
intermittent (e.g. wind and
PV)
generators installed does not provide a
mal
reliable contribution to the adequacy (e.g. during the
er
h
77
75
72
67
62
61
T
evening, where PV infeed is absent).
Anyhow, for the first time since 2011, there is
no year-
on-year net reduction in the
available generation
2012
2013
2014
2015
2016
2017
capacity. Nevertheless, as showed in January 17, this
capacity is inadequate to cover demand in severe
Evolution of peak load and adequacy margins
conditions without import.
[GW]
peak load
margins
Adequacy margins remain uncomfortable and in
20
60
severe weather condition (cold spell/heat wave), Italy
needs to import to cover his load and to guarantee
22
operational reserve requirements
10
55
6
5
0
50
2011
2012
2013
2014
2015
2016
2017
2
ISC – Uso Riservato
Winter Outlook 2017- 2018
Italy security of supply is not expected to be at risk under
In case of reduced available transmission capacities due to
forced
normal conditions;
outages of interconnection lines the possibility to cope with local
necessity using external generation capacity could be severely
affected;
Under
severe weather conditions (cold wave),
margins
may significantly narrow and, especially in the northern
There could be
relevant risks for the adequacy of the Italian
part of the country, there is the risk of not being able to
power system that are expected in the case of severe conditions.
meet demand needs;
Northern Italy bidding zones - remaining capacity
[GW]
3
ISC – Uso Riservato
Countermeasures
Action
Benefits
Cooperation on system adequacy and security at Regional level
has been further
strengthen and improved.
Potential
risks can be
detected in advance
RSCs update on a bi-weekly basis the adequacy outlook for the
winter in order to
fill the gap between seasonal and weekly
adequacy assessment that consider one week at time.
Some
thermoelectric plants have been
requested to came
back online from previous mothballing condition.
Maintenance plans of generation units and grid elements, at
national and regional level, have been optimized in order to
Available resources have been increased
minimize risks for adequacy
Procurement of
additional Demand Side Response resources
If, as in January 2017, concrete risk materializes Terna envisages the possibility to take additional emergency measures.
4
ISC – Uso Riservato