India among economies driving carbon surge from construction boom

A major international report has identified India among the economies most responsible for driving a surge in carbon emissions from the buildings and constru...

What Happened

A major international report has identified India among the economies most responsible for driving a surge in carbon emissions from the buildings and construction sector.
Buildings and construction now account for approximately 37% of global CO₂ emissions, nearly 50% of global material extraction, and 28% of global energy consumption — making it the single largest emitting sector.
In 2024, global building floor area expanded by 1.7%, reaching 273 billion square metres; much of this growth is concentrated in emerging economies, particularly India and Southeast Asia.
India's buildings sector alone accounts for about one-fifth of the country's total CO₂ emissions and approximately 33% of national energy use.

Static Topic Bridges

Embodied Carbon vs. Operational Carbon in Buildings

The carbon footprint of a building has two distinct components: operational carbon (emissions from energy use during the building's lifetime — lighting, cooling, heating) and embodied carbon (emissions from extracting, manufacturing, transporting, and assembling the materials used in construction — steel, cement, glass, aluminium, etc.). As buildings become more energy-efficient operationally, embodied carbon becomes proportionally more important.

Global cement production alone accounts for approximately 7–8% of global CO₂ emissions; steel contributes a further 7–9%.
Embodied carbon is a "one-time" stock emission — once a building is constructed, those emissions cannot be recovered, unlike operational emissions which can be reduced by switching to clean energy.
The Global Status Report for Buildings and Construction 2024/2025 (by UNEP and the Global Alliance for Buildings and Construction) found that the buildings sector is not decarbonising fast enough to meet 1.5°C or even 2°C Paris Agreement pathways.
India's rapid urbanisation means a large fraction of its future building stock does not yet exist — creating both a risk (locking in carbon-intensive construction) and an opportunity (building green from the outset).

Connection to this news: The report's finding that India is among the economies driving the carbon surge applies both to operational emissions (rapidly rising energy demand from new buildings) and embodied carbon (massive consumption of cement and steel in construction).

India's Urbanisation Trajectory and the Construction Imperative

India is in the middle of one of the largest urban transitions in human history. Its urban population is expected to grow from approximately 500 million today to over 800 million by 2050, requiring an enormous volume of new housing, commercial space, and infrastructure.

According to government estimates, India needs to construct approximately 25 million affordable urban housing units under various schemes to address existing shortfall.
India's construction sector contributes approximately 9% of GDP and employs over 50 million workers — the second-largest employer after agriculture.
The pace of construction has accelerated under flagship programmes including Pradhan Mantri Awas Yojana (Urban and Rural), Smart Cities Mission, AMRUT, and various state-level infrastructure schemes.
India's cement consumption — a proxy for construction activity — is approximately 380–400 million tonnes per year, the second highest in the world after China.

Connection to this news: The scale of India's construction pipeline is what places it among the top drivers of the global carbon surge; the sheer volume of material inputs required dwarfs that of most other economies.

Energy Conservation Building Code (ECBC) and India's Green Building Policy

To address emissions from the buildings sector, India has progressively developed and strengthened building energy codes and green certification frameworks.

The Bureau of Energy Efficiency (BEE), established under the Energy Conservation Act, 2001, launched the Energy Conservation Building Code (ECBC) in 2007 — setting minimum energy performance standards for commercial buildings with a connected load above 500 kW or conditioned area above 1,000 m².
The Energy Conservation (Amendment) Act, 2022 extended mandatory energy standards to residential buildings for the first time, a significant policy shift.
BEE is developing a successor code — the Energy Conservation and Sustainable Building Code (ECSBC) — which integrates both energy efficiency and embodied carbon considerations.
India has multiple voluntary green building rating systems: LEED-India (administered by IGBC), TERI-GRIHA, and BEE's Star Rating for commercial buildings.
IGBC-rated green buildings have demonstrated CO₂ reductions of approximately 12,000 tonnes per million sq ft per year compared to conventional construction.

Connection to this news: India's existing policy apparatus — ECBC, green ratings, Eco Niwas Samhita (for residential buildings) — is necessary but currently insufficient to offset the sheer volume of new construction, which is why India appears prominently in the global carbon surge data.

The Global Alliance for Buildings and Construction (GlobalABC) and UNEP Framework

The UNEP-hosted Global Alliance for Buildings and Construction (GlobalABC) is the primary multilateral platform for tracking and accelerating decarbonisation of the buildings sector. It produces the annual Global Status Report, which benchmarks progress against Paris Agreement-aligned pathways.

The 2024/2025 Global Status Report — the tenth edition — found that while the buildings sector has begun partially decoupling economic growth from absolute emissions in some regions, the pace of decarbonisation remains far below what is required.
The report calls for mandatory whole-life carbon standards in building codes, rapid phase-out of fossil fuel-based heating and cooking, and massive scaling of low-carbon construction materials (green cement, green steel, mass timber).
Buildings must reach net-zero operational emissions by 2040 and dramatically cut embodied carbon by 2030 to stay on a 1.5°C pathway, according to UNEP modelling.
India, as a non-Annex I party under the UNFCCC, has committed to reduce the emissions intensity of its GDP by 45% by 2030 (relative to 2005) and to achieve net zero by 2070 — both of which require significant action in the buildings sector.

Connection to this news: The report frames India's construction boom as a pivotal variable in global climate outcomes — how India builds over the next two decades will materially influence whether the world meets its climate targets.

Key Facts & Data

Buildings and construction sector: ~37% of global CO₂ emissions, ~50% of global material extraction, ~28% of global energy consumption
India's buildings sector: ~20% of India's total CO₂ emissions, ~33% of India's energy use
Global building floor area (2024): 273 billion m², growing at 1.7% per year
India's cement consumption: ~380–400 million tonnes/year (2nd globally after China)
India's construction sector: ~9% of GDP, ~50 million workers employed
ECBC (2007): mandatory for commercial buildings with ≥500 kW connected load or ≥1,000 m² conditioned area
Energy Conservation (Amendment) Act, 2022: extended standards to residential buildings
India's NDC target: 45% reduction in GDP emissions intensity by 2030 (vs 2005); net zero by 2070
Source report: Global Status Report for Buildings and Construction 2024/2025 (UNEP + GlobalABC)