"Emergency plan to secure winter: what are the measures set up by RTE?" by Sophie Diakhate, Ingénieure Génie électrique, Consultante en énergie et utilities at Yélé Abstract: The french electric system is currently going through an exceptional crisis, threatening the electric supplies for this winter, and potentially the next ones. As the guarantor of the balance between supply and demand, RTE must assume the security of supply security in France. They set up an emergency plan to secure winters. Yélé helps RTE to carry on that plan. We are going to see what are the primary measures proposed by RTE for the winter 2022-2023, and the options for individuals and the industry to reduce the risks of network load shedding.

1. Security of supply emergency plan
S O P H I E D I A K H A T E
2 0 2 2 / 1 2 / 0 1

2. Contents
1. A context of particular fragility in the security of electricity supply
2. A few reminders on the structure of the French electricity mix
3. Structuring the search for power reduction solutions
4. Three type of action
5. Impact of levers on the consumption graph
6. Rôle of datas in this project

3. 1. Low availability of the French nuclear fleet
2. Risk of constraint on the use of gas to produce electricity in France
3. Risk of reduced availability of electricity from neighbouring countries
An exceptional situation for three main reasons:
A context of particular fragility in the security of electricity supply
To understand this unprecedented crisis, it is necessary to have in mind
the structure of the electricity mix and the French nuclear power plant

4. National park installed by sector in
January 2022
A few reminders on the structure of the French electricity mix
Production in 2021 in TWh
Nuclear power is the most important sector in terms of capacity and energy in the French electricity
mix. Decreases in the availability of nuclear power therefore have a strong impact on the security
of electricity supply
Nuclear hydraulics Fossil Fuels Wind
power
Solar
energ
y
renewable
heat and
waste
Nuclear
hydraulics
Fuel
oil
Wind
Solar
Coal
Ga
s
Bio-
energy

5. WHAT ROLE AND
STRATEGY OF RTE?
RTE, together with the public
authorities and all the players in
the sector, has launched an
emergency plan to mobilize all
the available levers in order to
limit as far as possible the risk
of having to cut off consumers
during periods of tension in the
electricity system.

6. PUSH TIMELINE
Step 1
Diagnostic
Step 2
Planning
Step 3
Mobilization
Mar
ch
July
Sep
t.
Understanding the risk
of power cut
Mobilising stakeholders
and consumers around
Ecowatt
Nov
.
Step 4
Implementa
tion
Implementing
the measures
Step 5
Feedback
Apr
il
Analyse and identify
measures
Balance sheet
of winter
 The PUSH project plan is organised into 5 phases
 In order to prepare for the next winter, and to secure the upcoming

7. Structuring the search for power reduction solutions
Daily load curve for a working day in February, cold temperatures (excluding major cold wave)

8. Three types of actions
Consume less 2 Consume
regularly
in the right time
1
sobriety plan
8 am– 1 pm 6 pm – 8 pm
Implement emergency
measures
3
Reduce durably consumption
through energy efficiency and
sobriety actions, especially in
buildings, offices and shops
Smoothing out consumption
peaks through demand
response and price signals
On the most critical days for the
balance of the electricity
system, call on the mobilization
of all: businesses, local
authorities and individuals
The riskiest period for the power system corresponds to the morning plateau (8am-1pm) and the
evening peak (6pm-8pm).
The levers for managing consumption are aimed at all consumer segments:

9. Gree
n
« Our consumption is reasonable. »
Oran
ge
«Strained electrical system. Eco-actions are
welcome. »
Red
The electricity system is in a very tight situation. If
we do not reduce our electricity consumption,
targeted power shutdowns are unavoidable.
Let's all Eco-act!
 A website: monecowatt.fr/ and an application
Monecowatt
 an SMS alert (registration on the website)
 a specific API, accessible via the RTE Data
portal
Ecowatt makes it possible for the public to
know how tense the electrical system will be,
thanks to a 3-colour signal corresponding to
the state of the system over a period of 4 days
(from D to D+3), on an hourly and daily basis
Managing consumption with Ecowatt

10. Residential : examples of levers
Uses Pendant les heures d’alerte Ecowatt rouge Conseil pour que ce soit plus efficace
 Reduce by 1°C everywhere
 Further reduce heating in unoccupied rooms / floors
 Technical solutions exist to make this easy:
 program your heating
 installing a connected / remote-controlled box
 For this to be effective, anticipate heating outside
the red hours: in the morning between 5 and 7 am,
in the afternoon between 2 and 5 pm and after 8
pm
 Do not use household appliances (dishwasher,
washing machine, tumble dryer, iron, pyrolysis...)
 Prefer their use in the afternoon or evening after
8pm
 Limit the use of the oven, preferring to heat up
dishes in the microwave
 Prepare meals in advance, before 6pm
Various
 Switch off appliances on standby
 Ensure that lights are switched off in unoccupied
rooms
 Charging electric vehicles, scooters and bikes at
night

11. Impact of levers on the consumption graph
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
0
10
20
30
40
50
60
70
80
90
100 + Zoom on the impact of levers of action
Effects of sobriety and
offsetting of consumtion
Effects of Ecowatt red
Effects of sobriety and
offsetting of consumtion
Effects of Ecowatt red
GW
- 4 GW
- 5 GW
Effects of an Ecowatt red signal
- 5 GW - 4 GW
Effects of sobriety plan
Illustrations of the impact of voluntary actions and emergency actions on an « Ecowatt red » day
Residenti
al
Tertiary
Effects of sobriety and
offsetting of consumtion
Effects of Ecowatt red
Effects of sobriety and
offsetting of consumtion
Effects of Ecowatt red
Residenti
al
Tertiary

12. Rôle of data in this project
Step 1
Diagnostic
Step 2
Planning
Step 3
Mobilization
Mar
ch
July
Sep
t.
Understanding the risk
of power cut
Mobilising stakeholders
and consumers around
Ecowatt
Nov
.
Step 4
Implementa
tion
Implementing
the measures
Step 5
Feedback
Apr
il
Analyse and identify
measures
Balance sheet
of winter
 The PUSH worksites in preparation for the winter of 2022-2023 have been completed or are
being monitored throughout the winter
 In order to prepare for the next winter, the projects that have been put on hold must be
relaunched
Collecting and
analysing
consumption data

13. Questions ?
Thank you
Sophie.diakhate@yele.fr