| GRI Standards | Required Data | Unit | Data Collection Period | | | |
| | | | 2018 | 2019 | 2020 | 2021 |
| GRI: 102 | Suppliers | | | | | |
102-9
| Total Tier 1 suppliers | Absolute number of suppliers | 2,575 | 2,573 | 2,652 | 2,418 |
| | Critical tier 1 suppliers | Absolute number of suppliers | 36 | 27 | 29 | 35 |
| | Share of total procurement spent on Critical tier 1 suppliers | % of total procurement spent | 61 | 35 | 39 | 26 |
| - | Number of tier 1 supplier by key category | | | | | |
| | Drilling | Absolute number of suppliers | ND | 163 | 175 | 100 |
| | Logistics | Absolute number of suppliers | ND | 175 | 300 | 182 |
| | Wellhead platform | Absolute number of suppliers | ND | 2 | 2 | 2 |
| | Construction and Engineering | Absolute number of suppliers | ND | ND | 221 | 45 |
| | Maintenance | Absolute number of suppliers | ND | 494 | 499 | 241 |
| | Others | Absolute number of suppliers | ND | 1,739 | 2,174 | 1,848 |
| 102-9 | Critical non-tier 1 suppliers | Absolute number of suppliers | 49 | 56 | 74 | 104 |
| GRI: 102 | Supplier Assessment | | | | | |
| 102-9 | Number of tier 1 suppliers assessed in the last 3 years | Absolute number of tier 1 suppliers | 2,575 | 2,573 | 2,652 | 2,419 |
| | Percentage of tier 1 suppliers assessed in the last 3 years | % of tier 1 suppliers assessed against total tier 1 suppliers | 100 | 100 | 100 | 100 |
| | Number of critical non-tier 1 suppliers assessed in the last 3 years | Absolute number of critical non-tier 1 suppliers assessed | 49 | 46 | 65 | 104 |
| | Percentage of critical non-tier 1 suppliers assessed in the last 3 years agate | % of critical non-tier 1 suppliers assessed against total critical non-tier 1 suppliers | 100 | 82 | 88 | 100% |
| GRI: 308, 414 | Supplier ESG Management | | | | | |
308-1,
414-1 | New suppliers screening using ESG criteria | % | 100 | 100 | 100 | 100 |
| - | Weight of ESG in overall assessment of suppliers selection | % | ND | ND | 67 | 67 |
| | Total suppliers classified as sustainability high-risk | Absolute number of sustainability high-risk suppliers | 11 | 35 | 31 | 49 |
| | Number of tier 1 supplier classified as sustainability high-risk | Absolute number of tier 1 sustainability high-risk suppliers | 4 | 16 | 19 | 13 |
| | Percentage of tier 1 supplier classified as sustainability high-risk | % of tier 1 sustainability high-risk suppliers against total tier 1 suppliers | 0.16 | 0.62 | 0.72 | 0.54 |
| | Number of critical non-tier 1 supplier classified as sustainability high-risk | Absolute number of critical non-tier 1 sustainability high-risk suppliers | 7 | 19 | 12 | 36 |
| | Percentage of critical non-tier 1 supplier classified as sustainability high-risk | % of critical non-tier 1 sustainability high-risk supplier against total critical non-tier1 | 14 | 34 | 16 | 35 |
| - | Supplier Audit | | | | | |
| - | Percentage of critical (tier 1 and non-tier 1) suppliers audited annually | % of critical suppliers audited against total critical suppliers | 52 | 54 | 57 | 83 |
| | Percentage of critical (tier 1 and non-tier 1) suppliers audited once every 3 years | % of critical suppliers audited against total critical suppliers | 12 | 12 | 19 | 17 |
| | Percentage of suppliers with high sustainability risk audited annually | % of high risk suppliers audited against total high risk suppliers | 72.70 | 93.75 | 42.00 | 69.00 |
| | Percentage of suppliers with high sustainability risk audited every 3 years | % of high risk suppliers audited against total high risk suppliers | 27.30 | 6.25 | 58.00 | 31.00 |
| | Percentage of current high risk suppliers where gaps have been identified with corrective action plans | % corrective action plans (CAR) against total audit findings | 100 | 100 | 100 | 100 |
| | Percentage of current suppliers with corrective action plans that have improved their ESG performance within 12 months | % gap closed against total CAR | 100 | 100 | 100 | 100 |
| - | Supply Chain Spend Analysis | | | | | |
| - | Total procurement value | Million USD | ND | ND | 1,308 | 4,959 |
| | Procurement value: Thailand | Million USD | 886 | 965 | 1,000 | 4,046 |
| | Procurement value: Overseas | Million USD | ND | ND | 308 | 913 |
| | Procurement spend on product and services by category (only in Thailand) | | | | | |
| | Drilling | Million USD | 206 | 196 | 181 | 173 |
| | Logistics | Million USD | 150 | 214 | 120 | 95 |
| | Wellhead platform construction | Million USD | 142 | 54 | 215 | 67 |
| | Maintenance | Million USD | 51 | 61 | 56 | 56 |
| | Others | Million USD | 387 | 440 | 428 | 734 |
| | Supply chain KPI1: An average percentage of suppliers' KPIs which achieved targets To measure the efficiency and effectiveness of the contractor screening and selection (pre-award) as well as the contract management (post-award). The measurement can be done through the selected contractor's KPIs e.g. timely commencement/completion of services, SSHE performance, downtime, Service Level Agreement (SLA), ESG requirements etc. 2021 Target: 75% of total contractors | % | 85 | 86 | 84 | 80 |
| | Supply chain KPI2: # of contractors / suppliers non-compliance to PTTEP Management of Contractors & Suppliers requirements 2021 Target: Less than 5 suppliers | Number | 3 | 0 | 0 | 0 |
| | Supply chain KPI3: % of tier 1 supplier are assessed on ESG related risk for the last 3 years 2021 Target: 100% suppliers assessed against total tier 1 suppliers | % | 100 | 100 | 100 | 100 |
| - | Green Procurement | | | | | |
| - | The value of Green Procurement: Thailand | Million USD | 44.5 | 96.0 (1) | 117.0 (1) | 480 (1) |
| | Percentage of the value of Green Procurement: Thailand | Compared to the total procurement value | 0.00 | 0.10 | 0.12 | 0.45 |
| GRI: 204 | Local Procurement | | | | | |
| 204-1 | Local Procurement of Products and Services (2) | | | | | |
| | Thailand | % | 66 | 72 | 68 | 67 |
| | The Republic of the Union of Myanmar (3) | % | 27 | 30 | 25 | 22 |
| | Malaysia | % | ND | 100 | 100 | 98 |
| | Algeria | % | 62 | 78 | 25 | 29 |
| | Others | % | 100 | 100 | 98 | 99 |
| | Australia (4) | % | 46 | 0 | 0 | 0 |
| | Canada (4) | % | 46 | 95 | 100 | 0 |
