A ₹1 lakh fine and up to five years in prison - that is what Section 15 of the Environment (Protection) Act, 1986 prescribes for operating without environmental clearance. And that is just the starting point. The National Green Tribunal routinely orders project shutdowns, demolitions, and compensation running into crores for violations. If you are setting up a manufacturing unit, a construction project, or any industry that generates emissions, effluent, or hazardous waste, environmental clearance is not optional - it is a legal prerequisite that can shut you down if you skip it.

This guide breaks down the entire environmental clearance process in India as it works in 2026 - from figuring out whether your project needs clearance at all, to obtaining Consent to Establish, completing the EIA study, and finally getting that clearance certificate from the PARIVESH portal.

What Is Environmental Clearance and Who Needs It?

Environmental Clearance (EC) is a statutory approval required under the Environment (Protection) Act, 1986, governed by the EIA Notification, 2006 (and its subsequent amendments). Any project listed in the Schedule to the EIA Notification must obtain EC before starting construction or operations.

The types of projects that require EC include:

If your project does not fall in the EIA Notification Schedule, you still need Consent to Establish (CTE) and Consent to Operate (CTO) from your State Pollution Control Board (SPCB) under the Water (Prevention and Control of Pollution) Act, 1974 and the Air (Prevention and Control of Pollution) Act, 1981. More on that later.

Category A vs Category B: Which Applies to Your Project?

The EIA Notification 2006 divides projects into two categories based on the scale, capacity, or location of the project - not investment size.

Category A projects are appraised at the national level by the Ministry of Environment, Forest and Climate Change (MoEFCC), based on recommendations from Expert Appraisal Committees (EACs). Examples: nuclear power, major ports, primary metallurgical industries, large mining operations, and projects in ecologically sensitive areas.

Category B projects are appraised at the state level by the State Environment Impact Assessment Authority (SEIAA), based on recommendations from State Expert Appraisal Committees (SEACs). These are further divided:

How to determine your category: Check the Schedule to the EIA Notification 2006 (available at environmentclearance.nic.in). Your project type, capacity, and location determine whether it falls under A, B1, or B2. Projects located within 10 km of ecologically sensitive areas are automatically elevated to Category A regardless of size.

The Six Stages of Environmental Clearance

The EC process follows six defined stages. Category B2 projects skip stages 2, 3, and 4.

Stage 1: Screening

This is where your project gets categorised. For Category A projects, screening is not required - they directly proceed to scoping. For Category B projects, the SEAC screens the proposal to classify it as B1 or B2.

What you submit: A Form 1 application on the PARIVESH 2.0 portal (parivesh.nic.in) with basic project details - location, capacity, land use, water requirement, and proposed pollution control measures.

Timeline: Typically 30 to 60 days for the SEAC to complete screening.

Stage 2: Scoping and Terms of Reference (TOR)

The regulatory authority (EAC for Category A, SEAC for Category B1) prescribes the scope and Terms of Reference for the EIA study. This defines exactly what aspects the study must cover - air quality, water quality, noise, biodiversity, socioeconomic impact, and any site-specific concerns.

What you submit: A detailed project report including site layout, process description, raw material requirements, water balance, air emission estimates, and waste generation projections.

Timeline: The EAC/SEAC must issue TOR within 60 days of receiving the application. If not, TOR is deemed granted as per the standard template.

B2 projects skip this stage entirely.

Stage 3: EIA Study and Report Preparation

Once TOR is issued, you commission a QCI/NABET-accredited EIA consultant to conduct the study. The consultant must collect baseline environmental data across at least one season (three months minimum), assess potential impacts, and propose mitigation measures.

Key requirements:

Timeline: 3 to 6 months for data collection and report preparation. This is usually the longest phase.

B2 projects skip this stage.

Stage 4: Public Consultation

Public consultation has two components: a public hearing at the project site and written responses from stakeholders. The State Pollution Control Board (SPCB) organises the public hearing. Notice must be published in newspapers at least 30 days before the hearing.

What happens at the hearing: Affected communities raise concerns about environmental and social impacts. Every objection raised must be documented and addressed in the final EIA report. Failing to respond to objections is one of the most common reasons for clearance delays or rejections.

Timeline: The public hearing must be conducted within 45 days of receiving the request from the SEIAA/MoEFCC. The project proponent then gets 30 days to address concerns raised.

B2 projects skip this stage.

Stage 5: Appraisal

The EAC (for Category A) or SEAC (for Category B) reviews the final EIA report, public hearing proceedings, and all documentation. They may request additional information, site visits, or modifications to the project design.

For B2 projects, appraisal is the main substantive stage - the SEAC reviews the Form 1 application and project details directly without an EIA report.

The committee can:

Timeline: The appraisal must be completed within 60 days. In practice, if additional information is requested, this can stretch to 90 to 120 days.

Stage 6: Grant or Rejection of Environmental Clearance

Based on the EAC/SEAC recommendation, the MoEFCC (Category A) or SEIAA (Category B) issues the final decision. If approved, the EC letter specifies conditions that must be complied with during construction and operation.

Validity: EC is valid for the period specified in the clearance letter - typically 7 to 10 years for construction projects. You must start construction within the validity period or apply for extension.

The EC certificate is downloadable from the PARIVESH portal once granted.

Consent to Establish (CTE) and Consent to Operate (CTO): The Other Mandatory Approvals

Even if your project does not need EC under the EIA Notification, every industrial unit that generates emissions, effluent, or hazardous waste needs CTE before construction and CTO before starting operations. These are issued by your State Pollution Control Board under the Water Act, 1974 and the Air Act, 1981.

How CTE Works

You apply online through your SPCB's OCMMS (Online Consent Management & Monitoring System) portal with a detailed project report, site plan, pollution control equipment specifications, and the consent fee.

CTE validity: 5 years from the date of issue, with a possible 2-year extension.

How CTO Works

After construction, the SPCB inspects your facility to verify that pollution control equipment matches what was approved in the CTE. You submit performance test results, laboratory analyses, and hazardous waste authorisation (if applicable).

CTO validity: Depends on your industry category:

CTE/CTO Fees

Consent fees are based on your project investment:

Renewal Penalties

This is where businesses regularly get caught:

PARIVESH 2.0: The Single Window for All Environmental Approvals

All EC applications, forest clearances, wildlife clearances, and CRZ clearances are now submitted through the PARIVESH 2.0 portal (parivesh.nic.in). The portal provides:

Tip: Register on PARIVESH well before you need to file. The registration process itself requires company documents, authorised signatory details, and digital signatures.

Common Mistakes That Delay or Kill Your Application

  1. Using a non-NABET-accredited EIA consultant. Your entire study gets rejected. Verify accreditation at the QCI/NABET website before hiring.
  2. Inadequate baseline data. Collecting data for less than one season, or from insufficient monitoring stations, is a guaranteed rejection at the appraisal stage.
  3. Ignoring public hearing objections. Every concern raised at the public hearing must be explicitly addressed in the final EIA report. The EAC/SEAC checks this.
  4. Missing the CTO renewal window. Letting your CTO lapse and continuing operations is one of the most expensive compliance failures - it can trigger closure orders that halt production entirely.
  5. Wrong project categorisation. Misclassifying a B1 project as B2 to avoid the EIA study requirement is a violation that can result in the clearance being revoked retrospectively.
  6. Not checking the 10 km eco-sensitive zone rule. If your project site falls within 10 km of a national park, wildlife sanctuary, or other notified eco-sensitive area, it gets automatically elevated to Category A - regardless of size.

Realistic Timelines You Should Plan For

Project Type | Typical Duration

Category B2 (no EIA required) | 3 to 6 months

Category B1 (state-level EIA) | 8 to 14 months

Category A (central-level EIA) | 12 to 18 months

CTE (standalone, no EC needed) | 30 to 90 days

CTO (after construction) | 30 to 60 days

These timelines assume no additional information requests. Each round of additional information from the committee can add 30 to 60 days.

Penalties for Non-Compliance

The consequences of operating without environmental clearance or violating clearance conditions are severe:

Frequently Asked Questions

1. Does every business need environmental clearance in India?

No. Only projects listed in the Schedule to the EIA Notification, 2006 need EC. However, almost every industrial unit needs CTE and CTO from the State Pollution Control Board under the Water Act and Air Act. The only exceptions are White category industries with negligible pollution potential.

2. How much does the environmental clearance process cost?

The application fee itself is relatively low (₹15,000 to ₹5 lakh depending on project category). The major cost is the EIA study - fees for NABET-accredited consultants range from ₹5 lakh to ₹50 lakh depending on project complexity. Add CTE/CTO fees based on your investment size.

3. Can I start construction before getting environmental clearance?

No. Starting construction before EC is granted is a violation. The Supreme Court of India ruled in 2024 (Common Cause vs Union of India - the Vanshakti judgment) that retrospective environmental clearances are impermissible. Projects constructed without prior EC face demolition orders.

4. What is the difference between CTE, CTO, and environmental clearance?

EC is the overarching approval for projects listed in the EIA Notification - it covers the environmental impact assessment. CTE is the pre-construction consent from the Pollution Control Board for pollution control systems. CTO is the post-construction authorisation to start operations. Large projects need all three.

5. How do I check if my project falls in an eco-sensitive zone?

Use the PARIVESH portal's GIS mapping feature. Upload your project coordinates, and the system will flag if the site falls within 10 km of a notified eco-sensitive area. You can also check the MoEFCC's list of notified Eco-Sensitive Zones for specific protected areas.

6. What happens if my CTO expires and I keep operating?

The SPCB can issue a closure direction under the Water Act and Air Act. Your electricity and water connections can be disconnected. You face late renewal penalties of 25% to 100% of the consent fee. In serious cases, criminal prosecution with imprisonment up to 6 years is possible.

7. Can I apply for CTE and EC simultaneously?

Yes. Many project proponents run the EC and CTE processes in parallel to save time. However, you cannot obtain CTO until construction is complete and the SPCB has inspected your facility.

What You Should Do Next

Environmental clearance is one of those compliances where getting it wrong does not just mean a fine - it can mean your entire project gets demolished. The process is well-defined but involves multiple agencies, tight timelines, and zero tolerance for shortcuts.

Start by determining whether your project falls under the EIA Notification Schedule and which category it belongs to. If you are unsure about the compliance requirements that apply to your specific business, check your compliance posture free at complianceradar.in - describe your business once and get a complete picture of every regulation, clearance, and government scheme that applies to you.