Track Record 2017–2026

Projects We're Proud Of

Over 9 years in Protection Relay, SCADA & Substation Automation, Solar Farms and mass transit, working alongside Siemens, PEA, BTSC and Super Energy Group.

Protection Relay

DOW Plant, Rayong (PG) — SAT IEDs Replacement

Installation and commissioning of replacement IEDs, delivered with Siemens Ltd.

Siemens Ltd.2026/07
Maintenance

MRT Pink Line — Monthly E&M Preventive Maintenance

Monthly scheduled electrical & mechanical maintenance for the Pink Line.

Bangkok Mass Transit (BTSC)2026/04
Protection Relay

MRT Purple Line — 24kV Protection Relay Testing

Protection relay testing at 24kV for the Purple Line.

Thai Meidensha Co., Ltd.2026/04
Protection Relay

Arthit Offshore (PTTEP) — EGIL Protection Relay

EGIL protection relay service for an offshore petroleum platform.

PMS Power Maint. & Serv.2025/10
Solar & Renewable

Solar Power Plant — PV Panel Installation

Solar PV panel installation for a solar power plant.

Ban Phai Dao Ngoen Constr.2025/08
SCADA & Substation

230kV Khlong Dan GIS — Substation Automation

Substation automation and system testing for a PEA substation and 230kV GIS.

In-En Co., Ltd.2023/06
Solar & Renewable

Nongkram Substation, Lopburi — Solar 6MW T&C

Testing and commissioning of a 6MW solar power plant.

Super Energy Public Co., Ltd.2020/01
Power System

BKK Blue Line Extension — 750VDC Switchgear T&C

Testing and commissioning of 750VDC switchgear for the Blue Line Extension.

Siemens Ltd.2019/07
SCADA & Substation

Green Line Extension — Cable Tray for Com & SCADA

Cable tray installation for communication and SCADA on the Green Line Extension.

Siemens Ltd.2017/11
On Site

Our Work

Protection relay testing
Protection Relay Testing
Outdoor GIS substation testing
GIS / Outdoor Substation
Team testing and commissioning
Testing & Commissioning
Rooftop solar installation
Rooftop Solar PV Installation
Huawei FusionSolar inverter installation
Huawei FusionSolar Inverter
Super Energy solar farm
Solar Farm (Super Energy)
Siemens SIPROTEC protection relay test panel
Siemens SIPROTEC Relay Test Panel
CNEXT engineers wiring a 22kV substation control panel at PEA PKE
PEA PKE — 22kV Substation Panel Wiring
CNEXT team inspecting control circuits at PEA PKE substation
PEA PKE — Control Circuit Inspection
MV switchgear protection panel with Schneider Electric relay at a Data Center project
Data Center — MV Switchgear Protection Panel
Full Track Record · 2017–2026

Project Experience

52 projects, most recent first — sourced from the 2026 Company Profile.

YearPartner / CustomerProjectScope of Work
2026/07Siemens Ltd.DOW Plant, Rayong (PG)SAT IEDs replacement, install. & T&C
2026/06TIS Eng. & Service Co., Ltd.SPRC, Map Ta Phut (Rayong)Commissioning manpower support
2026/04Bangkok Mass Transit (BTSC)MRT Pink LineMonthly E&M preventive maintenance
2026/04Thai Meidensha Co., Ltd.MRT Purple Line24kV protection relay testing
2026/04PMS Power Maint. & Serv. Co.,Ltd.GSP1 Gas Separation PlantProtection & commissioning service
2026/02Tinamics Co., Ltd.Roi-Et Starch PlantProtection relay setting test
2025/10PMS Power Maint. & Serv. Co.,Ltd.Arthit Offshore (PTTEP)EGIL protection relay service
2025/082PS Service Systems Co., Ltd.B.Grimm Power, Ang ThongPower plant electrical service
2025/08Ban Phai Dao Ngoen Constr.Solar Power PlantSolar PV panel installation
2025/07Bangkok Mass Transit (BTSC)MRT Yellow LineMonthly E&M preventive maintenance
2025/06Siemens Mobility Ltd.DIGSI TrainingDIGSI basic training service
2024/09AMR Asia PCLSubstation projectThermostat rectification
2024/03AMR Asia PCLSubstation C&P upgrade Ph.1System integration & retrofit
2024/01Siemens Ltd.DOW SETA, RayongProtection relay retrofit (12-14 units)
2023/12Siam Synthetic Latex Co., Ltd.115kV Substation50BF relay panel; P139/P521 test
2023/12Siam Styrene Monomer Co., Ltd.22 & 0.4kV switchgearPM of HV/LV MDP switchgear
2023/06In-En Co., Ltd.PEA subs. & 230kV Khlong Dan GISSubstation automation & testing
2023/03Precise System & Project Co.,Ltd.Navanakorn Substation 3Substation testing service
2023/02Siemens Ltd.DOW, RayongSiCAM A8000 to SINEAX modification
2022/05Sonal Electric Co., Ltd.Cannon Hi-Tech, KoratSubstation maintenance
2022/01Siemens Mobility Ltd.MRT Blue Line ExtensionRelay testing & service
2021/11Zon Power Co., Ltd.Double AElectrical service
2021/10Korat Wind Energy Co., Ltd.Mittraphab Wind FarmWind farm electrical service
2021/07Gunkul Power Dev. Co., Ltd.ARG / Lotus Samut PrakanSubstation service
2021/06SEMS Engineering Co., Ltd.MRT Purple / BTS N.Green LineT&C & protection relay
2021/04Wind Energy Dev. Co., Ltd.WAYU Wind Farm, Nakhon RatchasimaWind farm electrical service
2021/04Electrical System Eng. Co., Ltd.MRT Pink LinePower supply test & commissioning
2021/03BES Engineering & Service Co.,Ltd.MRT Yellow LinePower supply test & commissioning
2020/06SEMS Co., Ltd.BKK Green Line Ext. (North)T&C of 69kV GIS and Pro. Relay
2020/06AMR Asia Co., Ltd.BKK Gold Line ProjectT&C of DC Switchgear & SIT
2020/04Provincial Electricity Au. (PEA)4x PEA HV Substation (Gp. B)Pro. Individual & Setting of 115 & 22kV
2020/01Super energy Public Co., Ltd.Nongkram substation, LopburiT&C of Solar power 6MW
2019/07Siemens Ltd.BKK Blue Line ExtensionT&C of 750VDC Switchgear
2018/11Siemens Ltd.BKK Blue Line ExtensionT&C of 69kV MEA Substation for BLE
2018/10Shengtai brassware Co., Ltd.Substation overhaul, ChonburiPM of 115 & 2kV Substation
2018/10King Mongkut (KMUTNB)University substation overhaulPM of 69 & 24 kV Switchgear
2018/07Provincial Electricity Au. (PEA)Impress Ethanol PlantProtection relay setting test
2018/07Siemens Ltd.MRTA Initial Blue Line ProjectPM of 69 & 24kV relay protection
2018/06Central Pattana PLC.Central Chiangrai Solar RoofProtection Relay setting test with PEA
2018/06Provincial Electricity Au. (PEA)Waste Power Plant, SaraburiPM of 22 & 6.6kV Switchgear
2018/05Pro Solar Group Co., Ltd.4MW Kabinburi Solar Power Plant24kV cable replacement and testing
2018/05Provincial Electricity Au. (PEA)PEA Samut Sakhon 7 SubstationVLF test of 115kV power cable
2018/04Rojana SubstationRojana Power Plant115 kV. Current Transformers Test
2018/04Zhongli Talesun Solar Co., LtdTalesun RayongPM of 22kV AIS Switchgear
2018/04Cardinal Health 222 (Thailand)Cardinal Health, RayongPM of 115/22kV GIS Substation
2018/03Gunkul Engineering PCL.Huai Bong Wind Power PlantPM of Wind Farm Project
2018/03Ayutthaya Glass Industry Co.,Ayutthaya Glass Industry Sub.Modify, Test & Commissioning Swg.
2018/03Provincial Electricity Au. (PEA)PEA Ranong 2 SubstationProtection Relay Replacements
2018/03Super energy Public Co., Ltd.Various locations30 locations for PM Solar Farm
2018/02Provincial Electricity Au. (PEA)PEA Khao Mai Kaeo SubstationPri. & Sec. injection for CSCS test
2018/02Provincial Electricity Au. (PEA)PEA Sam Pan 2 SubstationVLF Test of 115 kV power cable
2018/01Gunkul Engineering PCL.Yang Nam Kat Tai Solar FarmPower Meter Replacements
2017/12Asia Pacific Glass Co., Ltd.Asia Pacific Glass SA4 SWGRSupervisor of Installation, T & C
2017/11Siemens Ltd.Green Line Extension Project.Cable Tray Install. for Com & SCADA
2017/10Gunkul Engineering PCL.Ang Tong 1 & Tao Pun Solar FarmPower Meter Replacements
2017/08Thai Meidensha Co., Ltd.BKK Purple Line ProjectT&C of 115/69kV GIS and DC Swg.
Trusted By

Key Clients & Partners

SiemensSiemens MobilityBangkok Mass TransitAMR Asia Thai MeidenshaGunkulPEASuper Energy Huawei FusionSolarSEMS EngineeringIn-EnPMS Power TIS EngineeringCentral PattanaCardinal HealthPrecise System

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