If your facility has been a Designated Consumer under the PAT scheme, you already know the rhythm: baseline assessment, target setting, monitoring, verification, and trading of Energy Saving Certificates. You have been through multiple PAT cycles, built internal energy audit capabilities, and probably earned or purchased ESCerts along the way.
The transition from PAT to CCTS is not starting from zero. Much of your existing infrastructure carries over. But the differences are significant enough that treating CCTS as "PAT with a new name" will get you into trouble.
Here is what changes, what stays the same, and how to adapt.
What Stays the Same
The good news first. Several aspects of the compliance framework remain familiar:
Facility-level targets: Like PAT, CCTS sets targets at the installation level. Each facility is assessed independently against its own baseline.
Baseline-and-target structure: You start from a baseline year (FY 2023-24 for CCTS, versus varying cycle-specific baselines for PAT) and must reduce your intensity metric to meet the target within the compliance period.
Monitoring and reporting: You still need to track operational data, generate reports, and submit to BEE. The data collection discipline you built for PAT transfers directly.
Third-party verification: PAT used Designated Energy Auditors (DEAs). CCTS uses Accredited Carbon Verification Agencies (ACVAs). The verification concept — independent third-party attestation of your reported data — is identical.
Trading mechanism: PAT traded Energy Saving Certificates (ESCerts) on power exchanges. CCTS will trade Carbon Credit Certificates (CCCs) through the same exchange infrastructure. If you have traded ESCerts, the CCC trading process will feel familiar.
BEE administration: BEE remains the regulator for both schemes. Your existing relationship with BEE's state-level offices continues.
What Changes: The Five Big Shifts
1. The Metric: From Energy to Carbon
This is the fundamental change. PAT measured Specific Energy Consumption (SEC) — energy consumed per unit of production, measured in tonnes of oil equivalent per tonne (toe/T) or similar energy units.
CCTS measures GHG Emission Intensity — greenhouse gas emissions per unit of production, measured in tonnes of CO2 equivalent per tonne (tCO2e/T).
Why this matters: Energy and carbon are correlated but not identical. Two facilities consuming the same amount of energy can have very different carbon footprints depending on their fuel mix and grid dependency.
A cement plant that burns 100% pet coke has higher Scope 1 emissions per GJ than one burning a mix of biomass and natural gas, even if both consume the same total energy. Similarly, a facility in a state with high renewable energy penetration has lower Scope 2 emissions per kWh than one in a coal-dependent grid, even if both consume the same amount of electricity.
Under PAT, your fuel mix did not matter as long as your total energy consumption improved. Under CCTS, switching from a high-emission fuel (pet coke) to a lower-emission fuel (natural gas or biomass) counts as an emission reduction, even if total energy consumption stays flat or increases slightly.
2. Scope 1 and Scope 2 Separation
PAT tracked total energy consumption as a single figure. CCTS requires separate reporting of Scope 1 (direct) and Scope 2 (indirect from purchased electricity) emissions, using different calculation methodologies.
Consider a fertilizer plant that consumed 500,000 GJ of natural gas under PAT tracking. Under CCTS, that same 500,000 GJ translates to approximately 28,000 tCO2 in Scope 1 emissions using IPCC's natural gas emission factor. PAT never required this conversion — CCTS does, for every fuel type at every facility.
Your PAT energy data needs to be decomposed:
- Fuel consumption feeds into Scope 1 calculations using IPCC emission factors
- Grid electricity consumption feeds into Scope 2 calculations using CEA grid emission factors
- Captive power generation requires fuel-based Scope 1 treatment, not grid-based Scope 2
If your PAT monitoring system tracked total energy without separating fuels from electricity, you need to restructure your data collection to generate these separate scope calculations.
3. Emission Factors
PAT used calorific values to convert fuel consumption to energy units. CCTS introduces emission factors — conversion rates from fuel quantity (or energy content) to CO2 equivalent emissions.
You need two types of emission factors:
IPCC factors: For Scope 1 calculations. Each fuel type has a carbon content factor (e.g., bituminous coal: ~2.42 tCO2/tonne, natural gas: ~2.02 tCO2/1,000 m3). Process emissions (like clinker calcination in cement) have sector-specific factors.
CEA grid factor: For Scope 2 calculations. The national weighted average (currently 0.710 tCO2/MWh) is applied to grid electricity purchases.
If your compliance team has never worked with emission factors, this is a learning curve. The factors are published and standardized, but applying them correctly — especially for process emissions, stock adjustments, and captive power — requires attention to detail.
4. New Forms, New Data Requirements
PAT used Form S1 (monitoring and verification report). CCTS uses a five-form structure:
- Form A: Facility information and GHG emission data
- Form B: Production and energy consumption details
- Form C: Emission intensity calculations with factor references
- Form D: Action plans for emission reduction
- Form E2: ACVA verification attestation
These forms require more granular data than PAT's Form S1. You need fuel-wise consumption breakdown, emission factor citations for each fuel, separate Scope 1 and Scope 2 calculation sheets, and process emission calculations where applicable.
If your PAT compliance was managed through a single Excel workbook, expect the CCTS documentation to be 3-4x more detailed.
5. Verification by ACVAs, Not DEAs
PAT verification was conducted by Designated Energy Auditors — BEE-empanelled auditors who focused on energy consumption data. CCTS verification requires Accredited Carbon Verification Agencies — a newer category with specific GHG accounting expertise.
Some organizations that were DEAs under PAT have applied for ACVA accreditation, so there may be continuity in your verification partner. But the verification scope is broader: ACVAs check not just consumption data but also emission factor application, scope classification, process emission calculations, and the overall emission intensity arithmetic.