Energy Management
WNS is at the forefront of driving change by continually improving energy efficiency and conservation. To attain this objective, we implement several initiatives under our Environment Management System program, including energy consumption monitoring and planting over 18,000 trees at locations in and outside India. This effort not only has a positive impact on the environment like improving the air quality and enriching the soil but also has a socio-economic impact by providing livelihood to farmers.
Renewable energy remains a key focus area for WNS as part of our net-zero program, with clean energy becoming a more dominant source for our business across locations. We are minimizing our reliance on non-sustainable sources and constantly looking for clean and sustainable energy sources.
Energy Efficiency and Conservation Initiatives
To improve energy efficiency in our office infrastructure, we have implemented various initiatives. Furthermore, efforts are underway to identify more such opportunities at other facilities across our global operations. Our efforts have been recognized, with our operational sites in India maintaining their Energy STAR ratings.
To effectively optimize energy consumption, we are focusing on implementing good energy management practices and energy-efficient technologies. We have reduced energy consumption by consolidating our operational sites (offices and data centers) and implementing focused actions. Some of these measures are a continuation of our efforts to reduce energy waste during the hybrid model of working. We are currently measuring the impact by capturing energy data, identifying the associated impacts and finding alternatives to minimize it. WNS is also focusing its attention toward opting for green and energy-efficient buildings for our future offices.

To raise awareness about environmental issues and promote sustainability, WNS actively conducts training programs, both computer-based training and classroom training for employees on various environmental topics to foster a culture of sustainability across the organization. Like Internal auditor certification ISO14001:2015 & Lead auditor certification course, ISO 50001:2018, Chemical/Oil spill drills. WNS also has an internal training platform GLINT wherein EHS orientation is mandatory for 100% new joiners. In addition to these awareness campaigns, and sustainability-focused employee initiatives are arranged on various observance days - Earth Day, Water Day and World Environment Day etc.
As a part of environmental sustainability and carbon sequestration activities, we launched the ‘WNS GROW GREEN’ program. This mega tree-planting program is aimed at fostering socio-economic development while promoting green practices. Under this program we have planted around 18,000+ trees in India and Non-India locations till date. The estimated total carbon absorption form this is approx. 14,216 tCO2e in the life span of the plant / tree (considering 35 years). This effort not only has a positive impact on environment like improvement in the air quality and enrichment of the soil quality but also has a socio-economic impact by providing livelihood to farmers. The survival rate of the trees is expected to be more than 95%.
GHG Emissions
WNS (Holdings) Limited has approved near and long-term science-based emissions reduction targets with the SBTi. The SBTi has verified WNS (Holdings) Limited’s these net-zero science-based targets to be achieved by FY2050.
- Overall Net-Zero Target: WNS (Holdings) Limited commits to reaching net-zero greenhouse gas emissions across the value chain by FY2050.
- Near-Term Targets: WNS (Holdings) Limited commits to reducing absolute scope 1 and 2 GHG emissions by 42% by FY2030 from a FY2022 base year. WNS (Holdings) Limited also commits to reducing scope 3 GHG emissions by 51.6% per FTE within the same timeframe.
- Long-Term Targets: WNS (Holdings) Limited commits to reducing absolute scope 1 and 2 GHG emissions by 90% by FY2050 from a FY2022 base year. WNS (Holdings) Limited also commits to reducing scope 3 GHG emissions by 97% per FTE within the same timeframe.
At WNS, we measure and track our direct (Scope 1), indirect (Scope 2) and in value chain (Scope 3) GHG emissions in context with our GHG (tCO2e) emissions. The methodology used for calculating GHG emissions is aligned with the globally accepted GHG protocol standards developed by the World Resources Institute. Additionally, it helps us identify areas where energy efficiency can be improved and GHG emissions lowered.
We seek to alleviate the negative impact of climate change by identifying related risks and opportunities and actively working toward carbon net-zero alignment with our Environment Management System (EMS). Our EMS focuses on reducing carbon emissions across the entire value chain, including Scope 1, Scope 2 and Scope 3 emissions. We have joined the “Race to Zero” campaign backed by the United Nations and are actively pursuing our SBTi-approved targets, with the primary objective of limiting global temperature rise to 1.5°C.
With streamlined management and the right technology, we are focusing on optimizing our energy consumption. Currently, we utilize green energy based on site dynamics at our existing locations and plan to explore green and energy-efficient buildings for our future offices. Additionally, we have implemented the usage of electric vehicles in locations with charging stations.

WNS (Holdings) Limited’s GHG PERFORMANCE
The above performance figures include all locations of WNS (Holdings) Ltd.
Waste Management
Under our EMS program, we are monitoring, measuring and reducing the quantum of waste being generated from our operations. The following are some steps we have taken to reduce waste generation:
- Optimal use of IT equipment to reduce e-waste
- Digitization in our processes to drive paperless operations
- Elimination of use-and-throw items:
- Reusable ceramic mugs have replaced paper cups
- Reusable glass water bottles have replaced packaged plastic bottles
- Reusable acrylic containers with lids have replaced plastic wrap films
- Use of tissue paper eliminated wherever possible
- Promote reduction in the use of single-use plastic
All our waste is appropriately disposed of in accordance with the prescribed norms as per specific regions. In order to reduce environmental risk and ensure compliance with regulations, our E-waste, battery waste and hazardous waste are sent to authorized recyclers for processing.

Water Management
The company operates from leased office spaces, where the lessors are primarily responsible for ensuring water availability through multiple sources, including municipal water supply, groundwater extraction and water tankers during periods of scarcity. In certain locations, WNS also procures packaged drinking water for potable use. Most office premises are equipped with centralized sewage treatment plants (CSTPs), owned and managed by the lessors, to ensure proper wastewater treatment.
Amid the growing global water crisis and increasing pressure on freshwater resources, WNS recognizes the importance of responsible water management across its operations. We conserve water and support global sustainability efforts through several measures aimed at minimizing water consumption and preventing leakages, such as:
- Push taps installed in place of conventional taps
- Waterless, hygienic urinals are being installed
- Recycled water is being used wherever possible
- Water flow optimization
- Awareness mailers and posters on water conservation and the reduction of wastage