GHEC has delivered a broad portfolio of multidisciplinary engineering assignments across Saudi Arabia , the United Kingdom , and Pakistan , covering Power & Energy, Oil & Gas, industrial facilities, and commercial/MEP developments. The following list highlights our executed work across the full engineering lifecycle—from feasibility and FEED support through detailed engineering and construction-ready deliverables—demonstrating our capability to manage complex interfaces and deliver compliant, constructible solutions.
Project Coverage
Transmission Lines & Substations (HV/EHV) – overhead lines, UG cable interconnections, AIS/GIS substations, auxiliaries, and secondary systems support
Power System Studies – load flow, short circuit, arc flash, protection coordination, harmonics, motor starting, and grounding/earthing assessments
Oil & Gas / Industrial – brownfield modifications, tie-ins, upgrades, packages, and multidiscipline engineering support
MEP & Buildings – HVAC, electrical, plumbing and integrated building systems for commercial and industrial facilities
BIM & Digital Delivery – coordinated models, clash detection, quantity support, and design coordination workflows
Our Project Portfolio
Spanning Oil & Gas, power transmission & substations, pipelines, industrial facilities, MEP, BIM, and power system studies—delivered across Saudi Arabia, the United Kingdom, and Pakistan.
Power Distribution & Transmission Lines
- Construction of Shoaibah SWCC-2 380kV Substation and expansion of Modom BSP & S-IWPP Substation, including UG cable design/integration and complete civil, electrical, electro-mechanical, communications, protection/SAS/SCADA design services (Client: SSEM).
- Tender-level estimation for Double VSC HVDC OHTL (COA–SOA Interconnection Link), including tower spotting, hardware, conductor, OPGW and foundation estimation (Client: Alfanar).
- Complete engineering & design for 380kV D/C OHTL (169.20 km) from LILO of CKT (9078–9040) to BSP 9096 Dawadmi Wind (Client: L&T).
- Complete engineering & design for 380kV D/C OHTL (257.1 km) from Starah Wind #9085 to Wadi Al-Dawasir BAP #9701 (Client: L&T).
- Engineering & design for 380kV D/C OHTL (38.92 km) from proposed Nariyah IPP BSP up to cutting point along existing AlKhafji–Nariyah North OHTL (Client: Al Sharif).
- 230kV ARAMCO Zuluf Area: engineering & design for installation of 230kV gantry yards at ZCPF SS-100, Zoff Transition Yard, and Tanajib Gas Plant (Client: JGC/MLCC).
- Design for Double Circuit 115kV OHTL (~6.1 km) with monopole gantries for South Berri Water Injection Plant (Client: MLCC ).
- Engineering & material scope for 230kV gantry/switchyard equipment and 1Cx630mm² 230kV Cu/XLPE cables including terminations, earth link boxes, lightning protection, etc. (Client: MLCC).
- Complete engineering & design for 115/13.8kV Substation – Hafar Al Batin Industrial City, including primary, protection and civil/structural design (Client: NESMA Infrastructure & Technology).
- 230kV OHTL at Shoiba NGL Plant (46 km) from NGL to GOSP-3, and 230kV OHTL (6 km) from GOSP-3 to GOSP-4 (Client: Samsung / Saudi Aramco).
- Integration of 132kV network to Najran-2 BSP, including transmission line design and protection modification/extension at multiple substations (Client: Al-Raissy).
- Multiple 132kV OHTL / U/G cable projects (route mapping, sag/tension, plan & profile, foundations) plus protection modifications across regions (Clients include Al-Raissy, Al Ojaimi, Keir International, Mastoura, Al-Sharhan, ASAMCO).
- Renewable energy interconnection: Solar PV plant integration including 110kV OHTL & U/G cable design (PTS #19W0127, Madinah ) (Client: ASAMCO).
- CTW130 SADARA Rail Project – induced voltage studies (AC interference modelling/simulation at railway and 230kV line crossings) (Client: ASAMCO).
Substations, Switchgear & Electrical Packages
- 33/11kV Electrical Package Substation design and integration (power, instrumentation & control, security and telecom) for infrastructure facilities (Client: Lukoil, Russia).
- Supply/installation/testing/commissioning of new 13.8kV metal clad switchgear at Al-Sharaiah (HRS) Substation, Makkah (Client: Alfanar).
- Detail electrical engineering for gas compressor installation with ancillary facilities, including modular switchgear package and supporting systems (Client: Tatweer Petroleum via Brillante EngineersPakistan / TDE Canada).
Oil & Gas / Industrial Projects
- Ma'aden Dross Processing Facility (DPF) — ETAP Studies (Client: Ma'aden).
- SEC Black Start Diesel Generator (CAT 3616) – Asir Power Plant (Client: SEC).
- Luberef – MOC Packages (Multi-Discipline Design Support) (Client: Luberef).
- PetroRabigh – Brownfield Engineering / CAPEX Support (Multi-Packages) (Client: PetroRabigh).
- YASREF – Engineering & Manpower Support (Multi-Packages) (Client: YASREF).
- SABIC – Pipeline / Metering / HAZOP / Utilities Projects (Client: SABIC).
- Saudi Aramco – Pipelines / Terminals / Firewater / Hydraulic & Surge Studies (Client: Saudi Aramco).
- Saudi Aramco Land Rigs Manufacturing Facility (KSA): HVAC, fire fighting & electrical design for multi-building industrial development (~500,000 sq. ft.).
- Petro Rabigh Refinery (KSA): compressor upgrades (MEROX air compressors), control system upgrades (GE9030 controller/HMI replacement), radar tank gauging upgrade (RTG 3900 → RTG 5900), plus FEED for new truck loading facility and procurement support (MRs, TBEs, VDOC reviews).
Commercial Buildings / Healthcare
- NEOM Community Expansion (KSA): engineering design for added accommodation units, office buildings and amenities including electrical, HVAC, public health, and fire fighting systems (with 3D design).
- AMAALA Complex (KSA): detailed HVAC, sewerage, irrigation design with 3D model for a large residential complex (~650,000 sq. ft.).
- Dana Bay Water Park (Khobar): complete electrical & HVAC design for auxiliary buildings (~325,000 sq. ft.).
- 150-Bed Cardiac Hospital (DG Khan): detailed MEP engineering including HVAC, fire protection, plumbing & electrical (~150,000 sq. ft.).
- STC Warehouse (KSA): detailed MEP design for central warehouse (~320,000 sq. ft.).
- Revamping of 21 Hospitals (Sargodha & DG Khan Divisions): architecture/interior upgrades, civil/structural modifications and complete MEP design including HVAC.
- Hospitals / clinics – MEP & HVAC design packages — Various / Confidential
- Commercial buildings – architectural / structural / MEP packages — Various / Confidential
Pipeline Projects
- 20" MSGL for Rabigh to Rabigh II – Detail Design — Saudi Aramco
- 8" UPVC Pipeline by HDD and Open Trench – Detail Design — Saudi Aramco
- UGP – Underground Pipeline – Detail Design — Saudi Aramco
- GOSP-6 Phase-III Crude Pipeline – Detail Design — Saudi Aramco
- 36" Crude Pipeline (Tie-in) – Detail Design — Saudi Aramco
- Field trunk line & flowline – Detail Design — Saudi Aramco
- Khurais Central Processing Facility – crude pipeline tie-in from East West Pipeline — Saudi Aramco
- Root Cause of Pipeline Failure at Yanbu NGL Plant — Saudi Aramco
- Rehabilitate Al-Mu'ajjiz Terminal – Hydraulic & Surge Analysis Jump-Over (EWP → Al Mu'ajjiz) — Saudi Aramco
- Juaymah Crude Oil Terminal – complete loading system hydraulic analysis & optimization — Saudi Aramco
- East West Product Pipeline tie-in to Wasea Bulk Plant — Saudi Aramco
- Increase Capacity in Yanbu Madinah Pipeline (YM-01) — Saudi Aramco
- Khursaniyah / Ras Tanura / Juaymah Pipeline (KRTJ-1) — Saudi Aramco
- Dhahran Riyadh 1 (DR1) Pipeline and Ras Tanura Dhahran Bulk Plant Pipeline (RTDB1) Upgrade — Saudi Aramco
- Dhahran Riyadh 2 (DR2) → RQ1 Jump-over Upgrades — Saudi Aramco
- Riyadh-Qassim-1 Pipeline (RQ1) Capacity Increase — Saudi Aramco
- 10" & 16" JR-NJBP Product Pipeline Upgrade — Saudi Aramco
- South Riyadh Bulk Plant Product Loading Pipeline — Saudi Aramco
- Shoaiba Bulk Plant Refined Products Distribution Facilities — Saudi Aramco
- Shoaiba Bulk Plant Refined Products Distribution Facilities Firewater Network — Saudi Aramco
- Jubail Bulk Plant – refined product design and distribution — Saudi Aramco
- Expand LPG Production Facilities at Yanbu Refinery (PP) — Saudi Aramco
- Expand LPG Production Facilities at Yanbu Refinery (PP) – Hydraulic & Surge Analysis — Saudi Aramco
- Arabian Heavy Crude Oil Network Upgrade — Saudi Aramco
- Shaybah GOSP Condensate Transfer Upgrade — Saudi Aramco
- Hydraulic Analysis for the 4" RTP Condensate Pipeline — Saudi Aramco
- Upgrade Firewater System at Ras Tanura Terminal South — Saudi Aramco
- Yanbu Refinery Fire Water System Upgrade — Saudi Aramco
- Upgrade Fuel Oil Loading Pipeline – Yanbu Refinery — Saudi Aramco
- Midyan Gas Processing Facilities In Plant – Gas Pipeline — Saudi Aramco
- Detail Engineering Services for SEC PP-12 Gas Pipeline — Saudi Aramco
- CO2 Capture & Injection Facilities – Uthmaniyah — Saudi Aramco
- Fire Water Network – Wasit Power Plant (for SECL) Hydraulic & Surge Analysis — Saudi Aramco
- Increase Capacity of T-25 Transfer Pipeline at Ras Tanura Terminal — Saudi Aramco
- Dhahran Riyadh 1 / Dhahran Riyadh 2 New Jumpover to RQ1 — Saudi Aramco
- Khursaniyah / Ras Tanura / Juaymah Pipeline (KRTJ-1) – Manifa to Juaymah Increment — Saudi Aramco
- GOX Pipeline — SABIC
- SEP Ethane Metering Skid — SABIC
- CW Pipeline — SABIC
- Oxygen Pipeline Distribution Expansion — SABIC
- Expansion of Nitrogen Distribution Header – Jubail — SABIC
YASREF Projects
- Surge analysis for propane export to YRD via YNGLFD
- Surge analysis – firewater header study (Berth 69, 71 & 72) and jumper
- Supply of structural engineer / piping stress engineer / senior piping designer and engineering manpower support for multiple MOCs
- Firewater system jumpover line – ISO updating
- Yasref terminal old butane metering isometrics
- Detailed design of coke pit wall extension engineering works
- Detailed design of sanitary system connection (Berth 71/72 to Berth 69 pit)
- Design of propane and naphtha isometrics
- Design of isometrics for butane metering skid
- As-built butane skid (3" and above line size)
- Root cause / fatigue analyses using CFD and FEA (one-way FSI) for coker blowdown line and associated components
SABIC Projects
- Tie-in HAZOP (refinery interface)
- 80/54 conversion case
- PDS AA and GG valve modification
- Aldehyde system scope
- Vent silencer scope
- Retention basin scope
- HAZOP – contaminated vapor system at flare area (YNGL plant)
- Oil water separator scope
- Strainer mesh size verification (1/2")
- Orifice on quench line for spent caustic feed pumps
- Install bleeders (process safety improvement)
- Replacement of flare sump level transmitters
- LEL detectors on cooling water tanks
- Saudi Kayan HAZOP revalidation
Petro Tank Projects
- High sulfur fuel oil storage tanks & shipping pumps – King Fahad Industrial Port, Yanbu
KBR Projects
- UNIPROTEIN® Project – Conceptual and FEED phases