Subject: Conservation & Mitigation

Why in the News?

A groundbreaking study by Microsoft and WSP Global, published in Nature, shows major progress in making data centres more environmentally friendly.

What are the environmental benefits of using cold plates and immersion cooling in data centres?

• Lower Greenhouse Gas Emissions: These methods reduce emissions by 15–21% compared to traditional air cooling. Eg: Microsoft’s study showed that using immersion cooling in their data centres significantly reduced carbon emissions during peak operations.
• Reduced Energy Consumption: They use 15–20% less energy, as liquid coolants transfer heat more efficiently than air. Eg: Alibaba’s deployment of cold plate cooling led to lower power usage effectiveness (PUE), cutting energy bills and environmental impact.
• Significant Water Conservation: Water usage drops by 31–52%, helping conserve freshwater resources Eg: In water-stressed regions like Arizona, using cold plate cooling helps tech firms operate data centres without heavy reliance on water-based air conditioning systems.

How does life cycle assessment aid in evaluating cooling technologies?

• Measures Full Environmental Impact (Cradle to Grave): LCA evaluates emissions, energy use, and water consumption across a product’s entire lifecycle — from manufacturing to disposal. Eg: The Microsoft-WSP study assessed cold plates and immersion cooling from production to end-of-life, revealing their overall environmental benefits.
• Identifies Trade-offs Between Technologies: LCA highlights sustainability trade-offs, helping compare the true impact of different cooling methods. Eg: It showed that while immersion cooling reduces emissions, the type of coolant used may raise separate ecological concerns.
• Supports Informed Decision-Making for Climate Goals: LCA provides data-driven insights for industry and policymakers to adopt greener technologies that align with emissions targets. Eg: The ICT sector can use LCA results to choose cooling systems that help cut emissions by 42% by 2030, as per global climate goals.

Why is renewable energy essential for sustainable data centre cooling?

• Drastically Reduces Carbon Emissions: Using renewable energy like solar or wind can cut emissions by 85–90%, regardless of the cooling technology used. Eg: A data centre powered by wind energy in Sweden showed near-zero emissions even with traditional air cooling.
• Enhances the Impact of Green Cooling Technologies: When combined with cold plates or immersion cooling, renewables amplify environmental benefits by further lowering energy and water use. Eg: The Microsoft-WSP study found that with 100% renewables, water savings could increase up to 50%.
• Ensures True Sustainability Across the System: Cooling innovations alone aren’t enough if the electricity source is polluting; renewables make the entire system eco-friendly. Eg: A server cooled efficiently but powered by coal-based electricity still carries a high carbon footprint.

In what ways are liquid-cooling methods superior to air cooling?

• Higher Cooling Efficiency and Performance: Liquid-cooling systems like cold plates and immersion cooling transfer heat more efficiently than air, reducing the risk of overheating and improving hardware performance. Eg: In Microsoft’s data centres, cold plate cooling reduced component temperatures significantly compared to air-cooled setups, boosting system reliability.
• Lower Energy and Water Consumption: Liquid methods use 15–20% less energy and up to 52% less water, making them more sustainable and cost-effective in the long run. Eg: Alibaba’s immersion-cooled servers showed reduced electricity bills and water usage in high-demand operations.

To what extent can cooling innovations help meet ICT emission targets by 2030?

• Significant Reduction in Greenhouse Gas Emissions: Advanced cooling technologies like cold plates and immersion cooling can reduce ICT data centre emissions by 15–21%, directly contributing to the 42% emission cut target set for 2030 (from 2015 levels). Eg: Microsoft’s deployment of cold plate systems showed measurable emissions drops in large-scale data operations.
• Supports Scalable, Energy-Efficient Data Centre Growth: As demand for cloud services increases, liquid cooling enables high-performance computing without a corresponding rise in energy and carbon footprint, helping the sector scale sustainably. Eg: Alibaba’s use of immersion cooling enabled expansion of AI and cloud infrastructure while keeping energy use in check.

Way forward: 

• Promote Policy Incentives for Green Cooling Technologies: Governments should provide tax breaks, capital subsidies, and faster approvals for data centres that adopt liquid-cooling systems and renewable energy integration. Eg: Extending schemes like India’s PLI (Production-Linked Incentive) to green tech in data centres can fast-track low-emission infrastructure adoption.
• Mandate Life Cycle Assessments and Emission Reporting: Introduce mandatory Life Cycle Assessments (LCA) and carbon disclosure norms for large-scale data centres to encourage transparent, science-based decisions. Eg: Requiring firms to report environmental impact from cooling systems can guide smarter industry shifts aligned with ICT sector’s 2030 emission targets.

Mains PYQ:

[UPSC 2022] How will India achieve the target of 50% of its installed capacity from renewable energy by 2030? Justify your answer. How will the shift of subsidies from fossil fuels to renewables help achieve the above objective? Explain.

Linkage: Switching to renewable energy is a more effective way for the tech industry to run energy-hungry data centers in a cleaner, more sustainable way. This helps them meet climate goals and support national environmental targets.

Why in the News?

 The Kancha Gachibowli forest in Hyderabad, a rare green space in the city, became the centre of a major legal and environmental fight when the Telangana government planned to turn 400 acres of it into an industrial area.

Why did the Telangana government face criticism for its decision regarding Kancha Gachibowli?

• Threat to Urban Forest Land: The government decided to allocate 400 acres of Kancha Gachibowli forest for industrial development, risking the loss of one of Hyderabad’s last urban forests. Eg: This move put 100 acres of trees at risk, which were actually felled before intervention.
• Allegations of Ignoring Public Concerns: The government claimed ownership over the forest and accused protesting students of being misled by real estate interests, downplaying genuine environmental concerns. Eg: Students and activists protested to protect the forest but were dismissed by the state government.
• Judicial Reprimand for Environmental Damage: The Supreme Court took notice of the deforestation and reprimanded the Telangana government, highlighting the environmental insensitivity of the decision. Eg: The court ordered action after 100 acres were cut down, signaling the need to protect urban green spaces.

How do urban forests help in improving the environment and public health in cities?

• Mitigate Pollution and Improve Air Quality: Urban forests sequester carbon and absorb pollutants like PM 2.5 and PM 10, which are major causes of air pollution in cities. Eg: One hectare of trees can remove around one ton of air pollutants annually, helping reduce Delhi’s alarming Air Quality Index (AQI) of 494.
• Reduce Urban Heat Island Effect: Trees provide shade and cooling, lowering temperatures in concrete-heavy urban areas and combating the urban heat island effect caused by extensive construction and vehicle emissions. Eg: Cities like Bengaluru and Chennai with more green cover experience less extreme heat compared to heavily built-up areas.
• Control Stormwater and Prevent Flooding: Urban forests help manage stormwater runoff, reduce soil erosion, and prevent flooding, thus protecting urban infrastructure and residents. Eg: Urban green spaces reduce flood risks during heavy rains by absorbing excess water, unlike paved surfaces which increase runoff.

What role have judicial interventions played in protecting urban forests in India?

• Broadened Legal Protection: The Supreme Court’s Godavarman case (1996) expanded the definition of forests, mandating all States to identify and map forest areas, including urban forests, thereby bringing them under legal protection. Eg: In 2004, the apex court directed States to conduct a comprehensive forest inventory to enhance conservation efforts.
• Prevented Tree Felling through Stay Orders: Courts have intervened to stop indiscriminate tree felling in urban areas when public protests or petitions were filed, safeguarding ecologically significant areas. Eg: In 2020, the Supreme Court issued a stay on the tree felling in Aarey Forest, Mumbai, after public outcry and legal petitions.
• Ensured Government Accountability: Judicial interventions have held governments accountable for environmentally insensitive development and upheld the Right to a Healthy Environment under Article 21. Eg: In 2024, the Supreme Court reprimanded the Telangana government for felling trees in Kancha Gachibowli, directing restoration efforts.

Way forward: 

• Legally Safeguard Urban Forests: Enact clear legal protections for urban forests like Kancha Gachibowli by integrating them into city master plans and forest laws to prevent diversion for non-forest use.
• Strengthen Community Participation: Empower local communities and civic bodies to co-manage and monitor urban forests through citizen-led initiatives, ensuring long-term conservation and accountability.

Mains PYQ:

[UPSC 2015] “Mumbai, Delhi and Kolkata are the three mega cities of the country but the air pollution is much more serious problem in Delhi as compared to the other two. Why is this so?

Linkage: The Urban forests can serve as a safeguard against toxic urban air by absorbing pollutants. This question focuses on the critical issue of urban air pollution, highlighting the need for mechanisms like urban forests to improve air quality.