Demand of energy is increasing faster than the
generation. It leads shortage of power in all sectors of society. At
peak hours this shortage is higher. Unless we utilize energy efficient
technology, it is very difficult to minimize the shortage of energy. So
energy efficiency program and energy conservation has an important
role. Energy efficient technologies are cost intensive hence it is
always not possible to implement in country like India. In the recent
study, an educational building with operating hours from 10:00 a.m.
to 05:00 p.m. has been selected to quantify the possibility of lighting
energy conservation. As the operating hour is in daytime, integration
of daylight with artificial lighting system will definitely reduce the
lighting energy consumption. Moreover the initial investment has
been given priority and hence the existing lighting installation was
unaltered. An automatic controller has been designed which will be
operated as a function of daylight through windows and the lighting
system of the room will function accordingly. The result of the study
of integrating daylight gave quite satisfactory for visual comfort as
well as energy conservation.
 Alex H.W. Lee "Verification of electrical energy savings for lighting
retrofits using short- and long-term monitoring,” Energy Conversion &
Management, vol. 40, pp 1999-2008, 2000.
 RobWall , TraceyCrosbie, "Potential for reducing electricity demand for
lighting in households: An exploratorysocio technicalstud,” Energy
Policy, vol. 37,pp. 1021–1031, 2009.
 Eduardas Kazakevicius, Ashok Gadgil, Diana Vorsatz, "Residential
lighting in Lithuania,” Energy Policy, vol. 27, pp. 603-611, 1999.
 Denis Bourgeois a, Christoph Reinhart, Iain Macdonald, "Adding
advanced behavioural models in whole building energy simulation: A
study on the total energy impact of manual and automated lighting
control,” Energy and Buildings, vol. 38 pp. 814–823, 2006.
 Enedir Ghisia, John A. Tinkerb, " Evaluating the potential for energy
savings on lighting by integrating fibre optics in buildings,” Building
and Environment, vol. 41,pp. 1611–1621,2006.
 Danny H.W. Li, Tony N.T. Lam, S.L. Wong, Ernest K.W. Tsang, "
Lighting and cooling energy consumption in an open-plan office using
solar film coating,” Energy, vol. 33, pp.1288– 1297 ,2008.
 Roisin, M. Bodart, A. Deneyer, P. D’Herdt, "Lighting energy savings in
offices using different control systems and their real consumption,”
Energy and Buildings, vol. 40, pp. 514–523, 2008.
 Moncef Krarti, Paul M. Erickson, Timothy C. Hillman, "A simplified
method to estimate energy savings of artificial lighting use from
daylighting,” Building and Environment, vol. 40, pp.747–754, 2005.