In late April 2026, the Central Pollution Control Board (CPCB) notified the mandatory implementation of continuous online emissions monitoring systems (CEMS) for all Category A and select Category B industrial units. The directive, effective immediately with full compliance by 30 June 2026, requires real-time data transmission to CPCB servers.
Many SME manufacturers have yet to install or configure these systems. Non-compliance invites show-cause notices, temporary/permanent consent suspension, and penalties under the Air Act.
Market signals
All CEMS units must now transmit hourly stack emissions data (SOx, NOx, PM, O₂) to the CPCB's integrated portal. State PCBs will conduct remote audits and trigger automated alerts for exceedances, eliminating reliance on manual quarterly reports.
State PCBs across Gujarat, Maharashtra, Tamil Nadu and Andhra Pradesh have begun unannounced CEMS verification visits. Units with non-functional or unlinked systems face provisional consent cancellation pending remediation within 15 days.
Only CPCB-empanelled CEMS vendors and calibration labs are now recognized. Installation must include third-party validation and monthly calibration certificates. This has created a sudden 6-8 week backlog in vendor availability across high-industrial zones.
This June 2026 CPCB directive materially tightens CTE (Consent to Establish/Operate) compliance verification and enforcement. Manufacturers must ensure their CEMS vendors are CPCB-listed, systems are physically installed and portal-linked before month-end, and calibration certificates are current. Failure to do so will trigger show-cause notices from state PCBs, resulting in consent suspension and production shutdowns—a critical operational risk. At Vinayakam, we advise clients on vendor selection, portal registration timelines, and documentation frameworks to ensure seamless compliance and avoid enforcement action during this transition period.
Your action checklist
- Verify your CEMS vendor is on the CPCB empanelled list (check CPCB website); if not, engage a certified vendor immediately—installation lead times now exceed 6 weeks.
- Obtain a live CEMS portal login credential from your state PCB and conduct a dry-run data transmission test; report any connectivity issues to your vendor within 7 days.
- Schedule third-party CEMS validation (mandatory) and obtain a signed validation certificate; retain for audit trails—state inspectors will request this during unannounced visits.
- Document monthly calibration schedules in writing with your vendor; ensure calibration certificates are generated and archived; non-functional CEMS will trigger automatic consent review flagging.
Frequently asked questions
The CPCB mandated full CEMS compliance by 30 June 2026 for Category A and select Category B industrial units. All systems must transmit real-time hourly stack emissions data to CPCB servers with CPCB-empanelled vendors.
Non-compliance invites show-cause notices, temporary or permanent consent suspension, and penalties up to ₹5 lakh under the Air Act. State PCBs are conducting unannounced verification visits and triggering provisional consent cancellation for non-functional systems.
Only CPCB-empanelled CEMS vendors and calibration labs are recognized. Installation requires third-party validation and monthly calibration certificates. Current vendor availability has a 6-8 week backlog across high-industrial zones.