Consent to Establish (CTE) is the pollution board's approval to build; Consent to Operate (CTO) is its approval to produce. You need CTE before you start civil work or install machinery, and CTO after the unit and its pollution control systems are ready but before commercial production begins. Starting production on a CTE alone is treated as operating without consent. This guide compares the two side by side so you can sequence them correctly.
Both are given by the State Pollution Control Board (or the Pollution Control Committee in Delhi) under Section 25 of the Water Act, 1974 and Section 21 of the Air Act, 1981. For the full legal and fee background, see our page on pollution NOC.
CTE vs CTO at a glance
| Point | Consent to Establish (CTE) | Consent to Operate (CTO) |
|---|---|---|
| Purpose | Approves site, process and pollution control plan | Permits actual operation once the unit is built |
| When you apply | Before civil construction or installation of machinery | After construction and installation of pollution control equipment, before production |
| What the board checks | Siting, land use, category, process, water balance, proposed ETP, stack and waste plan | Whether the unit was built as approved and can meet discharge and emission standards |
| Inspection | Depends on category and board; common for Red and many Orange units | Commonly an inspection before the first CTO, and trial monitoring results may be sought |
| Validity | Period stated in the order, within which you must commission (Delhi: 1 to 7 years as requested) | Renewable consent for a period set by the board (CPCB 2025 ceilings: 5 years Red, 10 Orange, 15 Green) |
| Renewal | Extension before expiry if commissioning is delayed | Renewal before expiry with compliance reports |
| Fee | Based on category and capital investment | Based on category and investment, usually charged per year of validity |
| Consequence of skipping | Stop-work or closure risk, fee and penalty exposure | Operating without consent: closure directions, power and water disconnection |
What CTE actually does
Think of CTE as the board's answer to "may this unit be built at this place, in this way?" It is approved on paper. The CTE order lists conditions: ETP and STP capacity, stack height and sampling ports, fuel type, waste handling, monitoring and often rainwater harvesting or greenbelt requirements. Build as approved, because the board will compare the unit against the CTE at the CTO stage.
CTE is where siting is tested. Boards look at land use, distance from habitation and water bodies, and whether the category is permitted in that zone. Red category units are generally not allowed in ecologically sensitive areas. A CTE refused on siting grounds cannot be fixed by a better treatment plan, so test the site before signing a lease or buying machinery.
What CTO actually does
CTO is the board's answer to "does the built unit meet the conditions?" You file it with a compliance report on CTE conditions, photographs and, where required, trial monitoring results. An officer may inspect the unit. The CTO then sets operating conditions: discharge and emission limits, monitoring frequency, reporting, and the period of validity. Under CPCB's 2025 framework the longest period a board can grant is up to 5 years for Red, 10 for Orange and 15 for Green, although each State decides what it actually grants. For example, the DPCC Citizen Charter gives CTO of 5 years for Red and Orange and 10 for Green, which is shorter than the CPCB ceiling for Orange.
The correct sequence
- Settle category and siting. Match your process (not just your product) to the State's adopted category list.
- Check whether CTE can be skipped. If you hold Environmental Clearance under the EIA Notification, MoEFCC notifications issued in November 2024 provide that you do not need a separate CTE, though the CTE fee is still payable. White category units are exempt from CTE and CTO.
- Apply for CTE with process description, water balance, pollution control plan and capital investment.
- Wait for the CTE order before construction or installation. Civil work started earlier can be treated as a violation in many boards.
- Build exactly as approved. Any change in product, capacity or process needs an amendment first.
- Apply for CTO after installation and trial runs, before commercial production.
- Produce only after CTO is issued.
- Renew CTO well before expiry, and apply for amendment before any expansion.
Which one do you need today? A quick decision table
| Your situation | What you need |
|---|---|
| New unit, Red, Orange, Green or Blue sector, nothing built yet | CTE, then CTO |
| New unit with Environmental Clearance under the EIA Notification | No separate CTE (fee still payable); CTO before production |
| New unit in the White category | No CTE or CTO; online undertaking or intimation as per the State |
| Unit built and running, but never had consent | Approach the board for consent immediately; expect questions on the period of operation, and take advice before filing |
| Existing unit with valid CTO, adding product or capacity | Amendment or fresh CTE before installation, then amended CTO |
| Unit with expiring CTO, nothing changed | CTO renewal with compliance reports |
| Unit changing ownership or occupier | Transfer or fresh consent under the new owner's name |
| CTE expired and unit not yet commissioned | Extension request before expiry; do not wait for lapse |
State notes
- Delhi: applications are made through the DPCC online system, with a reported shift of new filings to the CPCB UCAMS portal in September 2026 that we have not confirmed; check the live portal. The Citizen Charter shows CTE for 1 to 7 years as requested, and Green units that need no pollution control devices are decided within 7 days. See pollution NOC in Delhi.
- Uttar Pradesh: UPPCB consent runs through Nivesh Mitra for new units and the UPPCB consent system, as described in compliance guides. CTO cannot be filed until CTE has been granted and acted on. See pollution NOC in Uttar Pradesh.
- Haryana: HSPCB consents are filed through the HEPC portal. The HSPCB procedure reports an inspection before the first CTO and CTO validity of 5, 10 and 15 years for Red, Orange and Green. See pollution NOC in Haryana.
Mistakes that cost time
- Treating CTE as permission to operate. It is not.
- Building first and applying later. Installed but unapproved capacity is treated as a violation even if it has not been commissioned.
- Starting CTO without the conditions in place. If the stack height, ETP capacity or monitoring ports promised at CTE are missing, CTO is delayed or refused.
- Water balance mismatches. Inputs must equal consumption plus wastewater plus losses.
- Understating capital investment. The fee depends on it, and boards compare it with balance sheets and bank sanctions.
- Forgetting the groundwater approval. In Delhi NCR, boards increasingly ask for water source approval before finalising consent. See groundwater NOC.
CTE, CTO and your other licences
Consent is cross-checked by other authorities. A factory licence application commonly asks for the pollution board's consent to establish or operate where the industry category requires it, and banks and subsidy schemes ask for CTE or CTO before disbursing. Start the consent early so that it does not become the last item holding up your licence.
Practical tips
Take dated photographs of the ETP, stack with sampling port and waste storage and upload them with the CTO application. Keep the same capital investment figure across your consent application, Udyam registration and bank appraisal. If the unit is expanding, file the amendment before buying the new machine, not after.
After CTO
Keep operating records and log books. File the annual Environmental Statement where it applies, arrange stack and effluent monitoring at the frequency in the consent, and install online monitoring if your sector is in the notified list. Hazardous waste, bio-medical waste and plastic EPR authorisations are separate approvals where relevant: see hazardous waste authorisation.
When to seek help
Get advice if your category is disputed, your site is near a restricted zone, you started work before consent, or you are not sure whether Environmental Clearance replaces CTE. Lawgical Guru can assess your category and siting and prepare the CTE and CTO applications. Call +91 92205 65553.
General information as of October 2026. Boards revise fees, portals and validity; check the live board portal before filing.
Related guides
Frequently asked questions
What is the difference between CTE and CTO?
Consent to Establish (CTE) is taken before construction or installation and approves the site, process and pollution control plan. Consent to Operate (CTO) is taken after the unit and its pollution control systems are ready, and permits production. Both are required in sequence, and CTO must be renewed.
Can I start production with only CTE?
No. CTE is not permission to operate. Boards treat commercial production before CTO as operating without consent, which can lead to closure directions and disconnection of power and water.
Do I need CTE if I have Environmental Clearance?
MoEFCC notifications issued in November 2024 provide that an industry with Environmental Clearance under the EIA Notification need not take a separate CTE, though the CTE fee is still payable to the state. You still need CTO before production.
Do White category units need CTE and CTO?
White category industries are exempt from CTE and CTO under the same 2024 notifications. Some boards, such as DPCC, ask for an online undertaking or intimation, so follow your State's procedure and keep proof of your category on file.
Can I apply for CTO before CTE is granted?
Generally not. In Uttar Pradesh, CTO cannot be filed until CTE has been granted and acted on, and most boards expect the CTE conditions to be implemented before CTO. Check your board's portal for the exact rule.
How long does CTE remain valid?
For the period stated in the order, within which you must commission the unit. Delhi shows 1 to 7 years as requested. If commissioning is delayed, apply for an extension before expiry.
I already run my unit without consent. What should I do?
Take advice before filing. Boards can direct closure and disconnection, and compensation may be imposed. A well-documented application showing the unit's compliance status is the usual route. Do not wait for a notice.
Official sources
Reviewed by Satyam Gupta, Company Secretary (CS) & Advocate
8+ years of industry experience. Last reviewed 16 October 2026. Always confirm current rules and fees on the official portal before acting.