SUSTAINABILITY REPORT 2013-15 
   
 
 
People
Safety
Quality
Availability
Environment
Community
Productivity
Engineering
Excellence
Continuous
Improvement
Annexures
 
Summary Report
 
 
ENVIRONMENT PERFORMANCE
ENERGY MANAGEMENT
Overview    |    Energy Mix    |    Energy Performance    |    Energy Conservation    |    Case Study
Energy Conservation
In the reporting period, we invested ₹1533.7 million (₹693.5 million in FY14 and ₹840.2 million in FY15) and spearheaded energy conservation projects across various business units, some of which are under implementation. This investment resulted in significant energy savings - ₹313.5 million (44.78 million kWh) in FY14 and ₹194.4 million (23.48 million kWh) in FY15.
 
Some of the key initiatives undertaken in the reporting
period to make our operations more energy-efficient are
as follows:
 
Deployment of Electronically Commutated (EC) motor technology for power reduction in air handling units of HVAC systems
   
Installation of motor optimisation software to reduce active & reactive load at drive level and thereby reduce power consumption
   
Provision of DO Sensor at the Aeration Tank of the STP resulted in daily energy consumption dropping from 52 units to 8.4 units
   
Consolidation of cooling towers
and chillers
 
Discontinuation of chilled water
circulation during non-office hours led
to energy saving of 250 units a day
   
Switching off the compressor during non-office hours led to energy saving
of 120 units/day
   
Installing LED lights in our plants helped conserve 27,914 kilowatt of power
   
Optimisation of RO-1 plant operations & stoppage of RO-2 plant in WWRF saved over 3,200 kilowatts of power