1. Importance of Sustainable Energy
in the Present Global & National
Contexts
One-day Seminar on Energy for Sustainable Development
Conducted by
Institute of Human Resource Advancement (IHRA)
University of Colombo
In collaboration with
Sri Lanka Sustainable Energy Authority
Ministry of Environment & Renewable Energy
9th May 2013, IHRA Auditorium
Thusitha Sugathapala
Director General
Sri Lanka Sustainable Energy Authority
Ministry of Environment & Renewable Energy

2.  Development of human society (Accelerated!)
 Energy (fossil) driven economy
 Extraction and consumption of resources (Depletion!)
 Fossil fuel / Clean Water / Clean Air / Fertile soil /…
FACTS

3.  “Oil Peak”
FACTS

4.  Energy Efficiency
 Water pumping
FACTS

5.  Energy Efficiency
 Ceiling Fans
FACTS
0
5
10
15
20
25
30
35
0 1 2 3 4 5 6
Efficiency
Regulator Setting
Fan 1
Fan 2
Fan 3
Fan 4
Fan 5
Fan 6
Fan 7
Fan 8
Fan 9
Fan 10
Average

6.  Resource Efficiency
 Foods: Water requirement
FACTS

7.  Resource Efficiency
 Foods: Energy requirement
FACTS

8.  Resource Efficiency
 Foods: Per capita meat consumption (kg/person/year)
FACTS
America
England
Brazil
China
India

9.  Air Pollution
 Outdoor air quality in Colombo
FACTS
0
10
20
30
40
50
60
70
80
90
100
1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011
AnnualAveragePM10(µm/m3)
Year
National Standard: 50 µg/m3
WHO Standard: 20 µg/m3

10.  Air Pollution
 Indoor air quality in semi-urban households
FACTS
0
50
100
150
200
250
300
Home1-In
Home1-Out
Home2-In
Home2-Out
Home3-In
Home3-Out
Home4-In
Home4-Out
Home5-In
Home5-Out
Home6-In
Home6-Out
PM2.5Concentration(µg/m3)
National Standard: 50 µg/m3
WHO Standard: 20 µg/m3

11.  Air Pollution
 Indoor air quality in estate-sector households
FACTS
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
0 5 10 15 20 25 30 35 40 45 50 55 60
24hrAveragePM2.5Concentrations(mg/m3)
Household Number
Measured Data
Permissible level of WHO AQG

12.  Carrying Capacity of Biosphere (Overloading!)
 Effects on natural cycles (Sustainability!)
FACTS
The Environment Crisis !

13.  Growth in population (An achievement?)
 Life Style  Increase in needs / services (Happiness?)
FACTS
High Consuming
Society !
Market
Opportunity !
Biomass
Nuclear
Hydro
SustainabilityQuantity of
Energy
Quality of
Energy
World Population Development Per Capita Energy Consumption
Coal
Oil
NG

14.  Solutions to Energy & Environment Crises
A. Developing Renewable Energy
B. Energy Efficiency Improvements,
Conservation and Management
C. Practicing Energy Modesty
SOLUTIONS FOR SUSTAINABILITY
A
B C
The
Solution
Three Facets of
Sustainable Energy
Fossil Economy  Green Economy
Rational Use
of Energy

15.  World Total Energy Demand – Projections
(Sustainable Scenario)
Source: The Energy Report – 100% Renewable Energy By 2050, WWF
Aggressive end-
use energy
savings and
electrification
Substitution of
traditional by
renewable
sources
Remaining fossil fuels
Baseline: ~ 520 EJ/year
Renewable Power
Renewable Heat & Fuels
Fossils & Nuclear
2000 2010 2020 2030 2040 2050
500
400
300
200
100
0
FinalEnergy(EJ/year)
Year
ENERGY SUSTAINABILITY
Fossils & Nuclear
RE –
Power
RE –
Heat & Fuel

16. 16
40%
5%
95%
Conventional Sources
Renewable Sources
ENERGY SUSTAINABILITY
 World Total Energy Demand – Projections (Sustainable
Scenario)
Role of Renewable Energy Sources

17. ENERGY SUSTAINABILITY
 Energy Efficiency
 Energy Intensity in Industrial Sectors
 Increased use of recovered input materials or alternative routes
 Refurbishment of existing plants to meet performance benchmarks
and stringent requirements for using best available technology
(BAT) in all new plants.
 Continuing improvements of BAT over time.

18. ENERGY SUSTAINABILITY
 Energy Efficiency
 Energy in Buildings
Evolution of Energy
Intensity in Buildings
Global Overall Energy Use in the
Building Sector
– By Energy Carrier Type

19.  Understanding the “Basics”
 “Knowledge Society”
 Availability of (natural) “Resources”
 Sustainable exploitation potentials of natural resources
 Management capacity
 Local expertise / value addition
 Inventions and Innovations
 Rational use of energy for development
 Sustainable lifestyle (energy modesty)
 Industrial Ecology
 Circular Economy
 Decoupling of energy from economy
KEY TO THE SUCCESS

20.  Availability of Resources
KEY TO THE SUCCESS
Solar Maps
Wind Map Spatial distribution of
annual average Global
Horizontal Irradiation
(kWh/m2/year)
Annual average
velocity (m/s)

21.  Energy Conservation and Management: Our targets
KEY TO THE SUCCESS
Technology / Process Annual Saving Potential-GWh
Energy Labeling Program
Ceiling Fans 35
Tubular Fluorescent Lamps 65
Ballasts 80
Refrigerators 16
Efficient lighting 173
AirConditioning 250
ISO 50001 375
Efficientmotors 185
Building Management System (BMS) 20
Efficientoffice equipments 16
Solar water heaters 5
Telecomunication 10
Efficientair compressors 11
EliminatingIncandescent Lamps 205
Green Buildings 550
Total 1,990

22.  Rational Use of Energy
KEY TO THE SUCCESS

23. Thank You
23