---
title: "MoEF emission norms"
description: "MoEF emission norms — issued by India's Ministry of Environment, Forest and Climate Change (MoEFCC) and enforced via the Central Pollution Control Board (CPCB) — set Indian emission limits for particulate matter, SO₂, NOx and mercury from coal-fired power plants, cement plants, refining, fertiliser and other industrial sources."
canonical_url: "https://sylio.co/glossary/moef-emission-norms"
last_updated: "2026-06-28T02:29:39.842Z"
---

**MoEF emission norms** — issued by India's Ministry of Environment, Forest and Climate Change (MoEFCC) and enforced via the Central Pollution Control Board (CPCB) — set Indian emission limits for particulate matter, SO₂, NOx and mercury from coal-fired power plants, cement plants, refining, fertiliser and other industrial sources.

## The 2015 thermal power plant amendment

The 2015 amendment substantially tightened particulate and NOx limits for Indian coal-fired thermal power stations. Implementation deadlines have been extended several times (to 2024–2027 for most categories) but the long-term direction is toward European-style limits.

## Implications for sonic-horn market

The tightening Indian particulate and NOx limits are driving retrofit investment in [ESP](/glossary/electrostatic-precipitator) upgrades, FGD installation and [SCR](/glossary/selective-catalytic-reduction) installation on the existing 210 GW coal-fired fleet. Sonic horns are part of the retrofit toolkit on these projects — particularly on legacy ESPs being upgraded to meet the new limits.

## Related terms

- [Electrostatic precipitator](/glossary/electrostatic-precipitator)
- [Selective Catalytic Reduction (SCR)](/glossary/selective-catalytic-reduction)
- [PC boiler](/glossary/pc-boiler)