Singtel Sustainability Report 2014

ENVIRONMENT
Measure. Manage. Commit.

Manage efficient energy consumption

Switching to cleaner energy
In 2013, the Energy Market Authority embarked on a Pulau Ubin micro-grid test bed to assess the reliability of electricity supply within a micro-grid infrastructure using intermittent renewable energy sources. In line with our quest to seek opportunities for renewable energy use, Singtel’s Pulau Ubin Microwave Station will be switching to the micro-grid installation for its energy needs. It will be powered by clean energy sources including biodiesel and solar photovoltaic panels. With this new photovoltaic plant, which is due for completion end-2014, the station will no longer need to rely on its existing diesel generators for electricity.

Renewable energy use (GJ)

Energy efficiency in our data centres

Energy use from our data centres accounted about 26.6% of our total energy use in FY2014. This is projected to increase as consumer demand for mobile and data services grows. 3 chillers were overhauled during the year, resulting in energy savings of 1,688 GJ. This is equivalent to a reduction of 233 tCO₂e.

In addition to existing energy efficiency measures, we plan to overhaul 6 chillers at Kim Chuan Telecommunications Complex-1 in FY2015 which will result in an estimated savings of 336 GJ, equivalent to 47 tCO₂e per year.

Fuel use

Our use of primary fuels consists of petrol and diesel for our commercial vehicle fleet and diesel for backup power supply generator sets. Our total fuel use in FY2014 decreased by 4.9% to 28,368 GJ compared to 29,829 GJ in the previous year. This is due to lower usage of our petrol vehicle fleet.

In FY2014, we added 2 Euro IV compliant diesel vans to our existing company fleet. To date, 29% of our company fleet are greener vehicles – 113 Euro IV compliant vehicles and
1 electric van.

Direct fuel use (GJ)