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Core Business Pillar 02 • Utility Solar & Substations

Utility-Scale Solar Power Plant Engineering & EPC

End-to-end engineering, procurement and construction solutions for utility-scale solar power projects. From technical planning and equipment coordination to electrical infrastructure, grid integration, installation and commissioning, we support the delivery of reliable solar power generation assets.

Utility Generation

Utility-Scale Ground-Mount Solar EPC

Comprehensive balance of system (BoS) delivery ensuring maximum generation yield and multi-decade structural integrity.

CIVIL & STRUCTURAL

Geotech, Grading & Mounting

Topographical surveys, hydrological studies, piling pull-out tests, internal roads, and precision mounting structures (fixed tilt and single-axis tracking systems).

ELECTRICAL BOS

DC Collection & Inverter Stations

String / central inverter stations, DC harnessing, optimized cable trenches, solar tracking controllers, and step-up pooling transformers.

TELEMETRY & PLANT CONTROL

SCADA & Weather Monitoring

Class-A pyranometers, anemometers, soiling sensors, plant controllers (PPC), and fiber-optic SCADA networks with real-time inverter telemetry.

COMMISSIONING & O&M

SAT, Performance Testing & O&M Handover

Site Acceptance Testing (SAT), PR ratio validation, IV curve tracing, string-level fault mapping, and complete O&M documentation handover to operations teams.

High Voltage

Pooling Substations (33kV, 66kV, 132kV, 220kV & 400kV)

Turnkey execution of Air-Insulated (AIS) and Gas-Insulated (GIS) pooling substations linking generation clusters to regional and central transmission utilities.

High Voltage Plant SUB-AIS-GIS

Substation Engineering & High-Voltage Equipment

Turnkey procurement, foundation casting, gantry erection, and high-voltage bay equipment installation meeting strict CEA Technical Standards for Grid Connectivity.

  • • Power Transformers (Generator Transformer / Incomer Units)
  • • SF6 Circuit Breakers, Isolators & Earth Switches
  • • Instrument Transformers: Current (CT) & Potential (PT) Transformers
  • • Lightning Arresters (Surge Arresters) & Earth Mat Grid System
Protection & Control SUB-SAS-CRP

Control & Relay Panels (CRP) and Substation Automation

Protection architecture engineered for instant fault isolation, transformer differential protection, distance relaying, and tele-protection signaling.

  • • Numerical Protection Relays (IEC 61850 protocol compliant)
  • • Substation Automation System (SAS) with redundant HMI servers
  • • Station Auxiliary Transformers & 220V/110V DC Battery Banks
  • • Dual-channel telemetry links to SLDC and RLDC centres
Grid Interconnect

Transmission Line Corridors & Statutory CEIG Charging

Navigating right-of-way engineering, high-tension tower installation, and statutory inspections to achieve on-schedule grid synchronization.

EHV Transmission Line Execution

Comprehensive transmission engineering covering route walkover surveys, total station profiling, tower spotting, soil classification, foundation casting, steel lattice tower erection, conductor stringing, and optical ground wire (OPGW) installation.

CEIG Clearance & Statutory Approvals

Full statutory handling with the Chief Electrical Inspector to Government (CEIG), State Transmission Utilities (STUs), and Central Transmission Utility (CTU) for single-line diagram approvals, site inspection compliance, safety certifications, and energization clearance.

Track Record

Featured Utility Solar & Substation Projects

Verified high-voltage evacuation, solar generation, and highway infrastructure projects engineered by Ultrathon Electric.

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220/132 kV Substation + 68 km Transmission Line

High-Voltage Substation & Transmission Infrastructure

High-voltage electrical infrastructure project combining a 220/132 kV air-insulated substation with associated transmission-line works. The project scope involves coordinated engineering, equipment procurement, civil and electrical construction, protection systems and commissioning activities.

Central India View Case →
125 MWp / 100 MW AC

Western India Utility Solar Development

Utility-scale solar EPC project comprising ground-mounted photovoltaic generation, 33 kV electrical collection infrastructure and grid interconnection facilities. The project required coordinated engineering, procurement, construction and commissioning across the generation and electrical balance-of-system packages.

Western India View Case →
To Be Finalised (Canopy-Based Solar PV System)

Development of Link / Connector Corridor between National Highway-19 (NH-19) and Varanasi Ring Road

Engineering and planning of a grid-connected Solar Photovoltaic (SPV) system proposed for installation on the triangular canopy at the MJB cum FOB of the Varanasi NH-19 to Ring Road Connector Corridor Project in Uttar Pradesh. The scope encompasses solar PV system design, module mounting structures, high-efficiency PV modules, inverters, electrical integration, cabling, earthing, lightning protection, and installation, testing and commissioning. Engineering activities are underway, with project execution scheduled to commence in 2027. Final system capacity and equipment specifications will be determined through detailed engineering and technical feasibility assessment.

Uttar Pradesh View Case →
Technical Intelligence

Substation, Transmission & Grid Code Whitepapers

Authoritative briefings on CEA connectivity compliance, ALMM guidelines, and substation delivery optimization.

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Regulatory Frameworks

SECI VGF Subsidy & BESS Tender Financial Modeling

Techno-economic and financial modeling for utility-scale BESS under SECI and State Viability Gap Funding (VGF) schemes: revenue stacking, tariff structuring, DSCR parameters, and bankability analysis.

7 min read Read →
Project Consultation & RFP

Looking for a Turnkey Balance of Plant (BoP) or Substation EPC Partner?

Our engineering team at IMT Manesar is ready to review project SLDs, evacuation corridors, and CEIG statutory timelines.

HQ: IMT Manesar, Gurgaon • 0124-4273124 • sales@ultrathonelectric.com