NWS Holdings Limited

Trees and bushes plants along the road to provide fresher air and better scenery for road users. Also, the trees act as acoustic barrier which minimize the noise disturbance to nearby residents
Adjusts lamppost and lightings intensity according to the illumination in different weathers and climates which could save energy
Replaces disposable tickets with reusable IC cards
Adopts high quality acoustic barrier
Inspects water usage and tunnels regularly and carries out timely repairs to decrease water consumption

Plants 160 million bushes for greening the central reservation
Utilizes solar energy system to reduce electricity consumption
Replaces disposable tickets with reusable IC cards
Adopts high quality acoustic barrier
Utilized 3,500 tonnes Crumb Tire Rubber Modified Asphalt, reusing 65,000 waste tires in 2010

The desulphurization facilities have been operating for 4 x 300 MW. Since 2006-2007 which help reduce sulphur dioxide emissions significantly
The denitrogen project has been launched for 4 x 300 MW which helps reduce nitroxide emissions substantially after operation

Installs the technology of Combined Cycle Gas Turbines for power generation using natural gas during the last extension of Coloane Power Station of Macau Power. It lights natural gas, the cleanest source of fossil fuels which contributes to cleaner air
Initiates the "Rational Use of Energy" programme which includes auditing customer's installations and recommending improvements
Set up the Safety, Health, Environment and Quality Office in 2001 to oversee issues concerning safety, health, environment and quality
Implements waste management plan, chemical product management plan and energy efficiency studies
Adopts new Fluidized Bed System technology to incinerate used oil to improve emission
Collaborates with the Macau Meteorological and Geophysical Bureau to closely monitor the impact of its emissions on local air quality
Joins hands with University of Macau to conduct research studies of Electric Vehicle (EV); and has bought an EV and set up two charging stations in CEM Building at Estrada D. Maria II and at the Coloane Power Plant as a pilot test
The first utility company in Macau and the first electricity company in Hong Kong and Macau which obtains the ISO 14064 Greenhouse Gases Management System Certification
Adopts the stringent European standards to control emissions to allow a reduction of more than 84% in NOx and SO₂. Most importantly, CEM has achieved a reduction of more than 36% in terms of CO₂

Installs water hammer equipment to avoid pipe bursts and water leakage due to excessive pressure caused by hydraulic vibration
Adopts a quasi-close loop system in its 410 km-long distribution network, which allows repairs and maintenance to be performed with minimal disruption to water supply system
Effectively reduced water loss ratio from nearly 40% in 1982 to below 10%

Sets up specialized working teams for checking and maintaining its 462-km pipeline
Regulates procedures of laying, managing and maintenance of pipelines
Uses geographical information systems to improve scientific management for the network
Implements structured leakage detection and regular valve replacement
Significantly reduced non-revenue water ratio from 25% to 17%

All industrial waste generated is handled cautiously in an effort to minimize the potential impact on the environment. Electrical parts, electrolyte and waste oil are collected and handled by professional agents. Also, tires are retreaded before disposing to extend their useful life and reduce solid waste
Implements a zoning lighting system for the light poles to reduce the electricity consumption of yard lighting by 21% in 2009
All scrapped tyres are retreaded and recycled

Replaced 2,300 starters and ballasts in fluorescent lights with electronic ballasts
Replaced 1,500 fluorescent light exit signs and 300 halogen lamps with LED light
Replaced 200 15W compact fluorescent lamps by 8W LED lamps
Collects and recycles 1,000 pieces of mercury-containing lamps and fluorescent tubes per year
Collects and recycles aged computer and other computer-related products
Provides waste separation bins in the centre
Adopts energy-efficient air cooled chillers
Adopts variable speed drive system to both fresh and flushed water supply systems
Encourages drivers to stop engines when vehicles are idle