Evaluations & letters14
ClientsPLN & PT Bukit Asam
Highest final score100%
Period2020 – 2026
Rated by our clients
How clients scored our work
At the end of a contract, PLN units assess their suppliers on quality, timeliness, sanctions and service. These are the results and reference letters we have received, newest first.
94%average final score across 11 scored evaluations
No sanctions in any of the 7 PLN performance evaluations
| Year | Project | Client | Score | Document |
|---|---|---|---|---|
| 2026 | Composite insulators supplied and installed at the 150 kV Semen Indonesia substationPerformance evaluation | PLN UPT SemarangCentral Java | 97%Very good | View PDF |
| 2026 | Composite insulator replacement on the 150 kV Rembang – Blora transmission linePerformance evaluation | PLN UPT SemarangCentral Java | 97%Very good | View PDF |
| 2025 | Gensets supplied and installed at PLN transmission units in SumatraPerformance evaluationSuccessful-operation letter issued in September 2026 | PLN UIP3B SumateraSumatra | 90% | On request |
| 2025 | Insulator supplyPerformance evaluation | PLN UPT KupangEast Nusa Tenggara | 100% | View PDF |
| 2025 | Earthing transformer replacement at the Ungaran extra-high-voltage substationPerformance evaluation | PLN UPT SemarangCentral Java | 97%Very good | View PDF |
| 2025 | Data-centre storage server upgradePerformance evaluation | PLN UIP3B SumateraSumatra | 100% | On request |
| 2025 | 20 kV coupling (kopel) readiness at transmission substations in SumatraPerformance evaluationNo warning letters or sanctions during the contract | PLN UIP3B SumateraSumatra | 93.3% | On request |
| 2025 | 275 kV Payakumbuh – Garuda Sakti transmission line (as subcontractor)Reference letterNo warning letters received | PLN UIP SumbagtengSumatra | Good | On request |
| 2024 | Transmission line work toolsVendor evaluation | PLN UIP3B SumateraSumatra | 90%900 / 1000 pointsGood | View PDF |
| 2024 | Personal protective equipment (PPE) and K3 safety toolsVendor evaluation | PLN UIP3B SumateraSumatra | 89.8%898 / 1000 points | View PDF |
| 2024 | Transmission inspection dronesVendor evaluation | PLN UIP3B SumateraSumatra | 90%900 / 1000 pointsGood | View PDF |
| 2023 | Fall-protection and rescue equipmentVendor evaluation | PLN UIP3B SumateraSumatra | 93.3%933 / 1000 pointsGood | View PDF |
| 2022 | Automation upgrade of the Derti motor control centre (MCC)Reference letter | PT Bukit Asam TbkSouth Sumatra | Good | View PDF |
| 2020 | 150 kV Garuda Sakti – Pasir Putih transmission line, Pekanbaru (as subcontractor)Reference letter | PLN UPP Jaringan Riau & KepriRiau | Good | View PDF |
Scores are the final score on each evaluation. PLN vendor evaluations scored out of 1,000 points are shown as a percentage.
Need the documents for a tender or vendor assessment?
Published copies have contract values blacked out. Full copies of all letters are available to prospective clients on request.
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