Use of ON-OFF timings as per sunrise & sunset time of the city. Thus, minimizing the operating time by 6%.
Lighting on roads as per IS 1944, 1970 and National Electrical Code. Thus, reduction in operating electrical load significantly.
All HPMV (mercury) lamps/ fittings were replaced before 1997.
Switching “OFF” ⅓ streetlights during low traffic hours on major roads in 2000, which had yielded energy savings of Rs. 8.00 Lakh per annum.
Implementation of “Streetlight Guideline” as per Indian Standards (IS 1944: 1970, National Electrical Code, National Lighting Code) to minimize capital and O & M expenses in the streetlight services.
19,570 Nos. of conventional tube light fittings were converted in energy efficient fittings with replacement of copper wound ballast into hi-frequency (electronic) ballast & T-12 tube with T-8 tube (lamp). Policy to install all new tube light fittings with electronic ballast & T-8 tube was implemented in 2003.
Switching “OFF” ½ streetlights during low traffic hours on 155 major roads was implement in 2004.
Use of HPSV-T lamps having 17% more efficiency & 40% more life was started in 2006.
Use of LED luminaires was started in 2013-14. Till date; there are more than 1,10,000 LED fittings are in operation in the city.

Results

Total connected electrical load is 10,872.00 kW. Load per km for providing streetlight is 3 kW.
Total reduction in electrical load is 4,465 kW, which is 29%.
Energy Savings achieved: 17 GWH per annum i.e. Rs. 10.29 Crores per annum as per prevailing energy rate.

Centralized Monitoring & Control System (CCMS):

Use of remote control & monitoring was started since long; but it was limited to very few services only as it was very costlier and communication technology wasn’t up to the mark as well as costly. Use of CCMS system effectively as well as on very large scale become financially & technically feasible during last 3-4 years. It was first started in 2017 and today more than 2,500 nos. of CCMSs are in operation.

Benefits of CCMS

Monitoring & control of feeder pillar (Control/ Switching point-panel) through computer and mobile is possible.
Minimize the unnecessary operation of streetlights.
Control excess energy use & theft of electricity.
Reduced manpower for O & M of streetlight system through remote monitoring & control of the switching points, receiving alerts regarding malfunctioning, over load, over voltage, power failure etc.
Remote switching "ON" & "OFF" is possible when requirement arises.