1. The document discusses Enel's global presence in renewable energy and provides generation capacity statistics in various countries. 2. It then summarizes a pilot energy storage project in Italy using nickel chloride batteries for energy shifting and ancillary grid services. Additional pilot storage projects are planned. 3. An off-grid hybrid power plant project in Ollague, Chile is described, which uses solar, wind, and sodium nickel chloride battery storage to provide reliable power.

1. Milan, June 17th 2015
WAME Seminar:
Renewable Energy and Innovation to provide
sustainable energy for all
The challenge of
execution

2. Argentina
• 1° in generation (2) (11%)
• 2° in distribution (17%)
• Capacity: 4.4 GW
• 2.5 M customers
Enel's global presence (1)
Global diversified player in more than 30 countries1) As of 31st December 2014
2) Among private operators
USA and Canada
• Capacity: 2.1 GW
Central America
• Capacity: 0.8 GW
Colombia
• 1° in generation (2) (21%)
• 1° in distribution (2) (22%)
• Capacity: 3.0 GW
• 2.8 M customers
Peru
• 1° in generation (22%)
• 2° in distribution (31%)
• Capacity: 1.9 GW
• 1.3 M customers
Chile
• 1° in generation (27%)
• 1° in distribution (33%)
• Capacity: 6.8 GW (of which 0.5 GW)
• 1.7 M customers
Brazil
• Presence in generation (1%) and
distribution (7%)
• Capacity: 1.3 GW (of which 0.4 GW)
• 6.4 M customers
Uruguay
• Capacity under construction
Italy
• 1° in generation (27%)
• 1° in distribution (85%)
• Capacity: 36.8 GW (of which 3.1 GW)
• 30,7 M customers power-gas
• Upstream gas activities
Iberia
• 1° in generation (24%)
• 1° in distribution (42%)
• Capacity: 23.5 GW (of which 1.8 GW)
• 12.5 M customers power+gas
Russia
• Presence in generation (5%)
• Capacity: 9.1 GW
• Presence in retail
Slovakia
• 1° in generation (82%)
• Capacity: 4,9 GW
Rest of
• Presence in generation
• 0.7 GW (of which 0.3 GW)
• Presence in retail
Europe Indonesia
• Trading activities
Africa
• ~0.1 GW (of which 10 MW)
• Upstream gas activities
Romania
• 2° in distribution (36%)
• Capacity: 0.5 GW
• 2,7 M customers
Enel presence
Enel Green Power presence
# ° Market position
% Market share
GW Enel Green Power Capacity
2

3. 1. Capacity and production as of December 31, 2014
27%
9%
60%
4%
36%
19%
44%
1%
0%
Geo Hydro Wind Biomass Solar
EUROPE
Capacity: 5,8 GW
Production: 20,7 TWh
NORTH AMERICA
Capacity: 2,1 GW
Production: 6,7 TWh
LATIN AMERICA
Capacity: 1,7 GW
Production: 4,4 TWh
Installed Capacity = 9,6 GW
Production = 31,8 TWh
In execution = 2,0 GW
Enel Green Power today
Global leadership in renewables development
3

4. 4 macro-areas with BD origination
Current EGP Presence
16 countries with operations
Italy
Spain
Portugal
France
Romania
Bulgaria
Greece
Canada
USA
Mexico
Guatemala
El Salvador
Costa Rica
Panama
Brazil
Chile
New markets already addressed
9 countries with advanced project development
Morocco
Turkey
South Africa
Colombia
Peru
Ecuador
Namibia
Kenya
Russia
BD countries under screening Areas of possible future interest
Northern Africa: Egypt,
Tunisia, Libya, Algeria
Southern and Eastern
Africa: Uganda,
Mozambique, Botswana,
Tanzania, Ethiopia
South America: Uruguay
Middle East: Saudi
Arabia, Qatar, UAE, Oman
Southern and
Eastern Asian
EGP Growth Strategy
Geographical Diversification: Potential Expansion Areas
4

5. 5
Access to energy
1.4 billion people worldwide currently
without access to energy
Universal Access to Energy is the 1st objective of the UN Sustainable
Energy for all Initiative (Enel is the only Italian company to sit in the
Board of Directors)
Within the framework of SE4All the Enel Group has launched a
dedicated program, “Enabling Electricity” including over 30 projects to
guarantee access to electricity for 5 million people in the world

6. Brazil - Ecoelce, Ecoampla & Chile – Ecochilectra
The objective is to stimulate, through discounts on electricity bills, the
collection and recycling of waste in the poorest areas of the large urban
centers, and at the same time, to allow “legal” use of electricity to people.
ENabling Electricity 2011-2014
Enel Main Projects
Partnership with the Barefoot College
Enel Green Power has signed an agreement for the realization of a rural
electrification project in Latin America with Barefoot College. The model
devised by Barefoot College involves 39 indentifying young, illiterate
grandmothers (aged 35 to 50), to be put on a special training program to
become Barefoot Solar Engineers.
TOB (Triangle-based Omni-purpose Building)
An independent habitable structure, easily assembled and completely flexible.
Through exploitation of the available renewable resources, it produces
electricity and accumulates it to make it available when necessary, with the
aim to provide energy and essential services in isolated areas
6

7. Enabling Electricity 2015 - 2019
New Enel Criteria
7
All sustainability projects that are ‘energy’ related by providing:
• Access to electricity for disadvantaged people
• Training and capacity building on energy
• Technological and infrastructural accessibility
• Fostering Energy efficiency
• Promotion of energy awareness
ACCESS TO ELECTRICITY
Projects that are focused on enabling disadvantaged
individuals and communities to have access to electricity,
including low income and disadvantage customer facilitations
ABATING ECONOMIC BARRIERS TO ACCESS
ELECTRICITY
Initiatives strongly focused on technical aspects, usually
designed for workers, contractors, or people in rural
communities
PROMOTING TECHNICAL TRAINING AND
CAPACITY BUILDING ON ENERGY
Activities focused on infrastructural development aimed at
improving access to electricity for communities in isolated
areas
DEVELOPING TECHNOLOGICAL AND
INFRASTRUCTURAL ACCESSIBILITY
Projects designed to increase and develop energy efficient
consumption among customers and useFOSTERING ENERGY EFFICIENCY
PROMOTING ENERGY AWARENESS
Promoting projects designed to increase and develop people’s
awareness of energy through workshop, training session,
lecture and so on
7

8. 8
Last tenders results:
50-70$/MWh Wind
60-80$/MWh PV
Renewables role in meeting demand for power

9. 9
Clear sky day Cloudy day
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0
100
200
300
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500
600
700
800
16/03/201419:12 17/03/201400:00 17/03/201404:48 17/03/201409:36 17/03/201414:24 17/03/201419:12 18/03/201400:00
AverageOutput Power [kW] Maximum OutputPower [kW] Minimum Output Power [kW]
-100
100
300
500
700
900
1100
21/03/2014 19:12 22/03/2014 00:00 22/03/2014 04:48 22/03/2014 09:36 22/03/2014 14:24 22/03/2014 19:12 23/03/2014 00:00
AverageOutput Power [kW] Maximum OutputPower [kW] Minimum Output Power [kW]
• Large Variation in few minutes in case of cloudy days
• Good average forecast
Threat or Opportunity
PV power plant

10. 10
Storage technologies
0 10 20 30 40 50 60 70 80 90 100110120130
PumpedHydro Storage
CompressedAirStorage
Flow Battery
Flywheel
Heat Thermal Storage
Hydrogen Storage
Lead-acid Battery
Lithium-ion Battery
Nickel based Battery
Sodium based Battery
Molten salt thermal storage
Application number
Technology
Solar
Wind
 Different types of
storage technologies
for solar and wind
power generation
 Lithium–ion batteries
are mostly used for
RES power
generation worldwide
Source: ELIS Counsulting Academy
Storage technologies in solar and wind power generation

11. 11
Global Market is expected to rapidly grow for
utility scale for ESS
Source: Navigant Research ‘’Advanced Batteries for Utility-Scale Energy Storage

12.  Catania 1 (PV – Italy, 10MW limited to 8MW)
- 1MW/2MWh Nickel Chloride Battery installed on
December 2014, currently under commissioning
- Aim of the experimentation: focus on energy
shifting and ancillary services, while limiting
unbalances (COD last week)
 Potenza Pietragalla (Wind – Italy, 18MW)
- 2MW/2MWh Lithium Battery, to be installed by May
2015; battery currently under construction
- Aim of the experimentation: focus on limiting
unbalances and ancillary services
 Additional Wind Site: 4MW/1MWh Lithium Titanate Battery,
to be installed by 2015. Battery currently ready for installation.
To be used for ancillary services using high C-rate battery
 Additional renewable site: 1,5MW/3MWh Li-Ion Battery to be
installed early 2016 to be used for energy service (low C-rate)
Grid Connected
RES Power Plants:
A. Ancillary
services (active
grid integration
and regulation)
B. Energy shift
(price arbitrage)
C. Unbalance
reduction
Pilot projects on-grid
IPP Renewable with Storage
12

13. Off-Grid
RES-Hybrid Power
Plants:
 Primary Energy
Resource for remote
sites, system must be
capable of replacing
a conventional
generation set, while
ensuring reliable
operation in typically
harsh Environments
 Emerging business of
potential EGP
interest
 Ollagüe (Hybrid Generation Power Plant with storage -
Chile) – Construction completed, in evaluation phase
Description
- PV, 200 kWp 3Sun thin film modules
- WTG, vertical axis, 30kWp
- Sodium Nickel Chloride battery 250 kW - 520kWh energy
storage system
- Diesel Generators as backup
- Additional, 2 Thermodynamic systems of 1 kWe + 3kWt
each, providing hot water to local school
Aim of the project
- First of a kind off-grid generation system for EGP, possible
model to applied to similar off-grid or grid limited sites
- Supply 24hs/day 7 days/week energy to an off-grid village
placed at 3700 AMSL in a desert area of Chile, removing
the restriction of the village to having access to energy
during night time
- Minimizing the consumption of fuel from existing diesel
generator to only limited time in winter (expected >84% of
generation from RES)
- Testing advanced renewable technologies and storage
system in a harsh environment, with large temperature
range
Pilot projects off-grid
Hybrid Generation Power Plant with storage
13

14. Ollagüe project
Site description
14
Population: about 200
Activities: mining, public services
Buildings: 151
Planta Solar PV
205 kWp
Banco de Baterías
tipo 2NaCl-Ni
752 kWh
Generador eólico
30 kW
Generador diesel
250 kW
Sistema “pasivo” de generación
Red Aislada
TRINUM
Sistema
termodinámico
cogenerativo a
concentración
Sistema activo
Gestión Remota

15. 15
Ollague: Sustainable operation model
Participation of communities, institutions, business and universities
First level maintenance
Indigenous community
Operation Analysis and Monitoring
EGP – El Abra –Supervision Committee–
Chile and Antofagasta University
Gestión Técnica
-
Gestión
administrativa
-
Autonomía
-Operation and Maintance
Ollague Municipality
“At Enel we are carrying out more than 30 projects through our Enabling Electricity initiative and these projects
have worked because we have been able to directly engage people. The combination of people's empowerment
and commitment has made this model fly.”
Francesco Starace, Enel CEO
Access to electricity: main benefits
Education*: +17% time dedicated to study
Health*: -15% of lightinh costs. These
savings are usually devoted to health
spending
Economy: increase in entrepreneuship (In
Ollague mainly in the tourist sector) thanks
to 24/h electricity
* Powering Education, 2014

16. Ollague Operating Data
Energy Supplied by BESS= 600 kwh
BESS power supply
PV generation and
BESS recharging
Diesel Generation,
BESS charging to
100%
As day before
16

17. Off-Grid
RES-Hybrid Power
Plants:
 Primary Energy Resource
for remote sites, system
must be capable of
replacing a conventional
generation set, while
ensuring reliable
operation in typically
harsh Environments
 Emerging business of
potential EGP interest
 Mexico
 US
 Chile
 Spain
 Romania
 Greece
 Peru
 Kenya
 South Africa
Grid Connected RES
Power Plants:
A. Ancillary services
(active grid integration
and regulation)
B. Energy shift (price
arbitrage)
C. Unbalance reduction
Additional storage opportunities under
investigation
Markets currently
under scouting
17