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RESIDENTIAL LIGHTING

USAGE STUDY

DSM Programme

INFORMATION FOR HOME OWNERS

UJ M&V TEAM INFORMATION FOR HOME OWNERS

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1 INTRODUCTION

The University of Johannesburg Measurement & Verification (M&V) Team has been contracted by

NamPower to verify the energy savings from its 1 Million LED Campaign. The 1 Million LED Campaign

involves replacing incandescent lamps (40W to 100W) with LEDs (light emitting diodes) (8W to 18W)

in Namibian homes around the country, free of charge. The campaign is sponsored by NamPower.

The objective of the campaign is to save energy on the national grid especially during peak times.

Figure 1 shows a picture of an incandescent lamp as well as its equivalent LED replacement.

Figure 1: Picture of old technology (left) and new technology (right)

Only incandescent lamps in high usage areas such as lounges, passage ways and kitchens will be

replaced. Each household participating in the campaign can receive a maximum of 6 LEDs.

Prior to the kick-off of the 1mLED Campaign, UJ M&V will start gathering data from homes on lighting

usage.

A number of household electricity monitors have been acquired in order to do this. These meters

were designed to help homes monitor their overall energy use, however we will use them to determine

hours of usage of incandescent lamps in lounges, kitchens and passage ways.

The meters will be installed in homes where the home owners have agreed to host meters in their

distribution boards.

As a reward for participating in the study UJ M&V will leave the household with ONE of the Owl

meters which they could use to better manage their electricity consumption.

The lighting usage study will be conducted BEFORE the 1mLED campaign kicks-off. Thus UJ

will not be installing LEDs

More details on the Owl meter and installation are provided below and here.

UJ M&V TEAM INFORMATION FOR HOME OWNERS

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2 OWL METER & INSTALLATION OVERVIEW

2.1.1 General

The meter, photographed in Fig. 1, has been specially designed to safely and cost effectively measure

household electricity demand.

Figure 1 Owl electricity monitor

The meter is designed to be installed on the main feeder in a household distribution board. However,

we will install 1 to 4 meters on lighting circuits in the DB in order to study lighting usage.

The unit consists of:

1. A transmitter that send sends the measured parameters

2. A receiver with a display that receives, stores the measured values and displays the

parameters selected.

3. A sensor or current clamp that measures the current flowing through the wire connected to

load.

The current clamp is clamped around the wire connected to the lighting circuits in a DB located in the

house. The measured parameters are transmitted wirelessly to the receiver. The transmitter and

receiver are powered by AA batteries.

2.1.2 Cost

As far as the homeowners are concerned there are NO costs associated with hosting an Owl wireless

electricity meter. The cost of the unit and installation/removal cost are paid for by the by the UJ M&V

Team. Furthermore there are no operating costs for the home owner.

UJ M&V TEAM INFORMATION FOR HOME OWNERS

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2.1.3 Installer

The meter installer will be selected by the M&V Team. A representative of the M&V Team will be

present during the installation to observe that it is completed correctly and that the Lighting system(s)

is operating as it was prior to the meter installation.

2.1.4 Home Owner duties

The homeowner will be required to facilitate the installation and removal of the meter at mutually

convenient dates and possibly provide information regarding their lighting system. It is preferable for

the homeowner not to make use of the user interface on the meter since it will likely be installed in a

DB where access is dangerous and there is also the possibility that the homeowner could re-configure

the meter accidently.

2.1.5 Safety/health risks

The units have been tested at various sites already (see photos below) and if installed correctly is safe

and trouble free.

2.1.6 Installation Period

The installation period is between 1-2 months after which the meter will be moved to another

installation site.

2.1.7 What does it Measure?

Electricity usage

Temperature

Emissions

ON/OFF time of the lighting systems.

3 CONCLUSION

We would like you to consider hosting a meter at your home for up to 1 year (at no cost to you). The

success of our study is dependent on getting enough volunteers for our data to be representative of

average households in different regions of the country. The effects of NamPower’s 1mLED Campaign

must be determined and will aid in future energy efficiency/capacity projects planning. Therefore we

strongly urge you to participate in this study.

4 CONTACT DETAILS FOR UJ M&V TEAM

If you have any questions please feel free to contact us via our webpage.

UJ M&V TEAM INFORMATION FOR HOME OWNERS

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5 EXAMPLE INSTALLATION

UJ M&V TEAM INFORMATION FOR HOME OWNERS

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A1 METERING AGREEMENT

UNIVERSITY OF JOHANNESBURG Metering Agreement

Between University of Johannesburg M&V Team,

and .........................................

A1 HOME OWNER DETAILS

Name:

Surname:

Tel. No.: Address:

Fax No.:

Mobile:

e-mail:

Meter Installation Date: (planned)

Meter removal Date: (planned)

I ................................................................................, the Home Owner, hereby consent to have the

University of Johannesburg M&V Team install, at their own cost, an Owl wireless electricity metering

system as described above. Further, I agree to provide the M&V Team reasonable physical access

to the site in order to install/remove/read/configure/modify the metering equipment. I will not attempt

to modify the meter or installation in any way.

UJ M&V team: ……………………………………………… Date: ...................

JHC Pretorius Team Leader

University M&V Team

Home Owner: ……………………………………………… Date: ...................

………………………………………………