(i) The use of timer switches or photo cells to switch off lights during unwanted hours should be considered.

(ii) Replace existing tungsten filament lamps with compact fluorescent lamps and HPMW with HPSV lamps.

(iii) Use electronic chokes and low loss magnetic ballasts for fluorescent lubes.

(iv) Removal of light diffusers can reduce the number of lamps required by upto 20 % for the same luminance. Lamps and luminaries should be cleaned regularly.


(v) Soundness of capacitors and chock starters etc. should be checked periodically

(vi) Replace incandescent lamps with circular fluorescent lamps.

(vii) Replace TL’ fluorescent tubes with ‘TLD’ fluorescent tubes.

(viii) Install electronic ballasts when conventional ballasts wear out.


(ix) Use light oppressive sodium lamps and instead of mercury vapour lamps and ballasts.

(x) Lower the height of light fixtures in high ceiling areas, wherever possible.

(xi) Lighting should be reduced in non-productive areas.

(xii) Translucent corrugated roof sheets should be used to allow day light inside the factory. Aluminium baffles may be used to avoid glare at different points.


(xiii) Clean the north glass periodically to improve the natural lighting.

(xiv) Use electronic dimmer dimming circuits.

(xv) Clean fixtures.

(xvi) Brighter colour walls.


(xvii) Translucent in place of light shed.

(xviii)Use low voltage tungsten halogen lighting.

(xix) Microprocessial or controlled lighting management system.