This document discusses Safaricom's perspective on energy efficiency and sustainability. It aims to reduce costs and carbon footprint by optimizing energy usage. Currently electricity is the highest expense, with diesel also a major cost. Various energy projects have been implemented, including aggressive grid connection, solar installation, low voltage backup systems, power cubes, free cooling systems, and smart controllers. These have significantly reduced generator run times and diesel usage at sites. Safaricom's goal is a reliable network with lower environmental impact through innovative energy solutions.

1. Energy efficiency and sustainability
Safaricom perspective

2. Who are we?
•A Kenyan firm with a majority Kenyan shareholding
•Provider of converged communication solutions – voice, data, SMS,
telepresence, cloud computing
•Financial inclusion
•Public Sector Support
•Driven to innovate for social development
•Driven to provide solutions for Kenyans in all realms of their lives
•Transforming lives

3. Energy efficiency
Why it is important to Safaricom
Reduce NOPEX.
 Optimize CAPEX
 Reduce Carbon Foot Print
Reduce noise and other
pollutions
Comply with regulations
Corporate responsibility
Energy security

4. Our current energy situation
Feb 2013 Cost Spread
Parts(Aircon
& Genset),
3%
PM Costs,
14%
Generator
Service, 2%
Generator
Overhaul, 2%
Diesel(24/
7 sites &
Offgrid),
10%
Diesel(KPLC
sites), 29%
KPLC
Electricity,
33%
Security, 7%
Sites Power Status
10.0%
0.1% 0.6%
2.1%
83.8%
2.8%
0.2%
0.5%
KPLC No Genset
KPLC Sites
24/7 GENSET
Solar Wind
Power Cubes
Enhanced
Mini Enhancer
Diet sites
Electricity currently the highest spend on NOPEX at 43% with diesel contributing to
31%
Target is to reduce diesel cost on the KPLC sites and the 24/7 genset sites
82% of the sites on KPLC, 3% of 24/7 Genset, 4% on Hybrid power and 11% sites
without gensets

5. Our Carbon footprint…
• In 2012, we calculated our carbon footprint for the first time to help
us understand our emission sources and how to reduce.
• Our total carbon footprint is 70,257 tCO2e
• Main sources of emissions– Fuel used in generators, vehicles,
refrigerant gases, electricity from the grid
• Uncertainty attached to reported figures – 14%

6. FUEL COST TRENDS IN KENYA (ERC)
140
120
100
80
60
40
20
0
ERC Monthly Diesel Prices
(Oct 2010 to June 2012)
Oct-10
Nov-10
Dec-10
Jan-11
Feb-11
Mar-11
Apr-11
May-11
Jun-11
Jul-11
Aug-11
Sep-11
Oct-11
Nov-11
Dec-11
Jan-12
Feb-12
Mar-12
Apr-12
May-12
Jun-12
Cost
Month
Fuel Prices
Linear (Fuel Prices)
Generally the fuel prices have been raising significantly impacting on our bottom-line

7. Energy sustainability roadmap
 Intensive staff training
 In-depth analyses of our energy baseline
 Thorough study of available solutions
 Preparation of target infrastructure for energy efficiency,
development of articulate specifications
 receiving proposals, technical analyses and commercial
appraisals.
 Budgeting, project planning implementation and monitoring
 LED lighting in all major facilities with automated control

8. Our current energy projects
 Aggressive grid connection
 Solar installation
 LV APS
 The power cube
 Free cooling
 Network Modernization program
 Deep cycle batteries, Durathon batteries, High temperature
batteries
 Smart controllers

9. Low Voltage APS performance
7.7
7.2
6.0
4.1
2.5
3.9
3.5
4.2
2.7
1.6
1.1 1.0
0.6
9.0
8.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
0.0
Avg. Gen Hours
LV APS(with Battery Cycling) Perfomance
Average Gen Hours Linear (Average Gen Hours )
Consistent decline in generator hours realized from the sites which have been
installed.
Installed 100 such units and planning for mass rollout

10. Grid power connection
Partnering with utility companies to bring grid power to rural areas
Low TCO for short distances

11. THE POWER CUBE-REDUCE SITE ENERGY INFRASTRUCTURE TO ONE
SINGLE ENERGY EFFICIENT UNIT
Diesel Generators
Rectifier
Batteries
Telecom
equipment
Cooling
+ efficient cooling in case of Indoor
site
Power Cube

12. POWER CUBE WITH SOLAR-REDUCE NEED FOR REFUELING IN
REMOTE SITES

13. TCO-Power cube

14. Performance curve for Mara Governors
 Average generator run per day dropped from 24hrs/day hours to 7.5 hours.
 93 such units now installed across the network .
 61 units expected to be installed by 30th April 2013.

15. Free cooling allows circulation of outside cooler air into the BTS reducing use of
active cooling

16. TCO-Free cooling

17. Free cooling boxes installation highlight
Performance curve Ewaso Ngiro
 Installation of free cooling box commissioned on this site on 17th February, 2012.
 The peak power for the site has reduced by 25%.
 103 such units now installed across the network.
 405 units targeted to be commissioned by 30th April, 2013.

18. Green Base Station
Kalongot_Site_3139 Takabba_1278

19. SAFARICOM STAND ALONE SOLAR SITEA AT GUBA
Guba

20. Use of smart controllers to optimise
on energy infrastructure

21. Staggering the start up load with smart controller
reduces genset size requirement by up to 50% with the
resultant genset efficiency
Genset requirements – power system soft start
Required genset size
With uncontrolled inrush
≈ 16KVA
AC current
Required genset size with
inrush control≈ 11KVA
time
Genset start
Inrush current Air condition
Air condition
Original total current
Power system soft start and
battery recharge mode
Start up delay Sequencial start
Reduction of total inrush current by:
 Power System startup delay
 Sequential start up of rectifiers
Total current

22. Reliable, Green Cell Sites
Safaricom innovates with advanced energy
storage technology from GE

23. Result … less downtime +
reduced carbon footprint!
Pre-Durathon Durathon Roll-Out Durathon Powered
Minutes of Site Downtime
75+%
Reduction

24. Access site Target architecture-Power
ACCESS SITES
Stable grid (less than 2 hours
grid outage per day)
Unstable grid (more than 2
hours grid outage per day)
No Grid, Accessible
No Grid, very remote,
security concerns
All site outdoor with power MINI- racks
HIGH EFFICIENCY
INVERTERS
POWER CONFIGURATION
• LV APS,
• Smart controller,
• 2V monoblock Deep cycle batteries,
• remote site monitoring.
• All sites to be outdoor.
Power cube with remote monitoring
NO GENERATOR 16 KVA Generator

25. Community Power Projects - Objectives
• Poor local community, cannot afford
cost of power.
• Request from the community.
•Request from donors engaged with the
community in other development projects.
• Rapid expansion of Mobile Money MPESA
services to the rural areas.
• Optimum network utilization and
improved Rate of Return (no sleeping cells)
for lack of subscriber activity.
Thank You