India among economies driving carbon surge from construction boom

📌 Summary:

• India is among the emerging economies driving an unprecedented expansion of the world's building stock even as decarbonisation of the construction sector has slowed sharply, per the 10th Global Status Report for Buildings and Construction (GSRBC), released on May 19, 2026 by the UN Environment Programme (UNEP) and the Global Alliance for Buildings and Construction (GlobalABC)

• Global building floor area reached 273 billion square metres in 2024, growing 1.7% in a single year — "like adding two Delhis annually"; growth has slowed in Europe and China but "remains robust in India and Southeast Asia"

• India's construction sector grew at an annual rate of 11% between 2024 and 2025, reaching a valuation of around $210 billion, with sector inflation of 5%-6% driven largely by labour shortages

• Climate burden: Buildings and construction now account for around 37% of global carbon emissions, nearly 50% of global material extraction (the largest of any sector) and 28% of global energy consumption

• Causal chain (why emissions are rising): Operational emissions from buildings rose 6.5% between 2015 and 2024, against a benchmark requiring a 31.6% fall; the stagnation stems from expanding floor area, sluggish retrofitting and persistent fossil-fuel policy support

• Embodied carbon: Cement, steel and aluminium used in buildings alone accounted for 9% of global emissions in 2024 (around 2.1 gigatonnes); shifting to low-carbon materials early is critical to avoid "locking in" high emissions for decades

• India's positives flagged: the Energy Conservation and Sustainable Building Code 2024 (administered by the Bureau of Energy Efficiency) targets 20-50% efficiency gains; rooftop solar is a "bright spot" — India added 3.2 GW in 2024 and 4.9 GW in the first nine months of 2025, aided by the PM Surya Ghar scheme; the IGBC has registered over 18,620 green projects

• Gaps and solutions: As of January 2026, no country has submitted an updated NDC 3.0 with an "extensive" buildings-sector strategy; an additional $3.6 trillion of investment is needed cumulatively by 2030 for a net-zero pathway; the report urges all G20 nations, including India, to embed buildings strategies in their NDCs by 2030

🎯 UPSC Relevance: GS3 (climate change, sustainable development, India's net-zero pathway, urbanisation) — connects rapid construction-led growth with embodied-carbon and decarbonisation challenges.

📝 Prelims Facts:

• The Global Status Report for Buildings and Construction is published by UNEP and GlobalABC (Global Alliance for Buildings and Construction)
• Buildings and construction account for around 37% of global carbon emissions and nearly 50% of global material extraction
• India's Energy Conservation and Sustainable Building Code 2024 is administered by the Bureau of Energy Efficiency (BEE)
• PM Surya Ghar is India's rooftop-solar subsidy scheme; NDC = Nationally Determined Contributions under the Paris Agreement

🔑 Key Term: Embodied carbon — the greenhouse-gas emissions associated with manufacturing, transporting and installing building materials (such as cement, steel and aluminium), as distinct from the operational emissions from energy used during a building's life.