Energy efficiency in street light:
Street lighting loads require electricity during peak demand hours. Street lighting projects are considered attractive investment projects by electricity supply utilities.
In India, street lighting consumed about 8,478 GWh of electricity in FY13, about 1.5% of total national electricity consumption, and that figure can be reduced by 25 to 60% through the use of energy-efficient LED technologies (EESL 2013).
Also street lighting has either inadequate or poor infrastructure and incurs high maintenance costs, often amounting to 10-15% of a typical municipal budget.
Use of efficient lighting infrastructure could help reduce the energy usage between 25 and 60percentin India. For instance, retrofitting the entire conventional streetlights with LEDs in the country could result in a potential annual savings of 4,300 million KWh, which is about 50% of total energy consumed.
In addition, operational optimization, such as the use of twilight switching controls and dimming and voltage optimization, could lead to an additional energy savings of 15-20%.
The total opportunity of energy savings at the national level, could increase from 4,300 million KWh to about 5,000 million KWh annually. Assuming a power cost of INR 5 per KWh, this translates to an annual cost savings of INR 2,500 crores.