01Project overview & context
Overview
Project summary
SgurrEnergy delivered multidisciplinary detailed design engineering for Ayana Renewables’ 450 MW utility-scale solar PV project in Rajasthan, India. The assignment covered civil, structural, electrical and balance-of-plant infrastructure, including design basis development, single-line diagrams, MV collection systems, equipment sizing, protection, earthing, electrical layouts, technical specifications, grid studies, vendor-document review and technical bid evaluation. SgurrEnergy also coordinated interfaces across the solar plant, switchyard and transmission-line systems and provided construction and commissioning support through engineering comment closure.
Project context
The project comprises a 450 MW utility-scale solar PV development distributed across multiple land parcels in Rajasthan. Diverse terrain and parcel conditions created project-specific requirements for layouts, grading, drainage, foundations, electrical routing and constructability. The engineering scope also required coordinated interfaces between the PV plant, MV collection network, switchyard and transmission-line systems.
Ayana Renewables required a multidisciplinary design partner capable of converting the project basis into coordinated, implementation-ready engineering packages while maintaining alignment across disciplines, stakeholders and construction priorities. Timely technical decisions, vendor coordination and engineering-comment closure were important to support construction, commissioning and progression towards Commercial Operation Date.
Client objectives
- Develop coordinated civil, structural, electrical and infrastructure design packages.
- Integrate solar PV, MV collection, switchyard and transmission-line engineering interfaces.
- Resolve site-specific terrain and constructability constraints across multiple land parcels.
- Maintain compliance with applicable standards and project requirements.
- Provide timely engineering support through construction, commissioning and design closure.
Key challenges & considerations
Multiple Land Parcels and Diverse Terrain
The project extended across multiple land parcels with varied topography, affecting layout, grading, drainage, access, foundations, electrical routing and construction sequencing.
Multidisciplinary Design Interfaces
Civil, structural, electrical and infrastructure packages were closely interdependent, requiring structured interface management to maintain alignment and close design issues without delay.
Plant-to-Grid Integration
Connecting the solar PV plant with the MV collection network, switchyard and transmission-line systems required consistent design assumptions and clear ownership of interfaces.
Construction and Commissioning Responsiveness
Site execution generated technical clarifications, vendor-document reviews and design comments requiring timely closure while protecting design intent and documentation quality.
02Engineering scope & delivery
Role & engineering approach
Independent engineering role
SgurrEnergy’s role
SgurrEnergy acted as the multidisciplinary detailed design engineering consultant for the 450 MW solar PV project. The team coordinated civil, structural, electrical and infrastructure engineering across the PV plant, MV collection system, switchyard and transmission-line interfaces.
The appointment covered development of design bases, calculations, drawings, specifications and technical studies, together with vendor reviews, technical bid evaluation and compliance assessment. SgurrEnergy also supported construction and commissioning through technical coordination, issue resolution, design optimisation and structured closure of engineering comments.
Our engineering approach
SgurrEnergy applied a multidisciplinary, interface-led engineering approach suited to a large solar development distributed across varied land parcels. A common design basis was translated into coordinated civil, structural, electrical and infrastructure packages, while site-specific solutions addressed terrain and constructability conditions at parcel level.
The PV plant, MV collection network, switchyard and transmission-line systems were treated as connected parts of the same delivery system. Calculations, specifications, studies and vendor inputs were reviewed against applicable standards and project requirements. During construction and commissioning, technical queries and engineering comments were tracked through closure so that decisions remained timely, traceable and aligned with design intent.
Scope of services & deliverables
Design Basis and Engineering Coordination
- Development and coordination of multidisciplinary design bases and project inputs.
- Coordination of civil, structural, electrical and infrastructure interfaces.
- Preparation of technical specifications.
- Engineering calculations, equipment sizing and design documentation.
Civil and Structural Engineering
- Site-specific civil and infrastructure design across multiple land parcels.
- Assessment of terrain, constructability and discipline interfaces.
- Structural engineering and foundation-related coordination.
- Design support for roads, drainage and associated balance-of-plant infrastructure.
Electrical and MV Collection Engineering
- Single-line diagrams and electrical system architecture.
- MV collection-system design and calculations.
- Equipment sizing, electrical layouts and cable-system coordination.
- Protection, earthing and associated electrical studies.
Grid, Switchyard and Transmission Interfaces
- Grid studies and applicable compliance assessments.
- Engineering coordination across switchyard and transmission-line systems.
- Integration of plant, collection and grid-evacuation design interfaces.
- Technical coordination with relevant project stakeholders.
Procurement, Construction and Commissioning Support
- Vendor-document review and technical bid evaluation.
- Technical clarification and issue resolution during project execution.
- Design optimisation and engineering-comment closure.
- Construction and commissioning-stage engineering support.
Project configuration
- 450 MW utility-scale ground-mounted solar PV development.
- Multiple land parcels with diverse terrain.
- Single-line diagrams, MV collection, protection, earthing and electrical layouts.
- Switchyard and transmission-line interfaces.
03Value & outcome
Improved Multidisciplinary Coordination
Integrated coordination across civil, structural, electrical, PV, switchyard and transmission-line packages improved visibility of design dependencies and supported consistent decisions across disciplines and stakeholders.
Earlier Risk Resolution
Site-specific review and structured interface management enabled technical and constructability issues to be identified and resolved during engineering, reducing the likelihood of avoidable disruption during construction.
Improved Site-Specific Constructability
Engineering solutions were adapted to varied topographical and parcel conditions, supporting more practical implementation of layouts, infrastructure and associated balance-of-plant systems.
Timely Engineering Progression
Responsive engineering support, vendor coordination and comment closure helped maintain design progression through construction and commissioning.
Project outcome
SgurrEnergy completed the multidisciplinary detailed engineering scope for the 450 MW solar PV project and supported the client through construction and commissioning interfaces. The engagement improved coordination across civil, structural, electrical, switchyard and transmission-line packages, enabled early resolution of technical and constructability matters, and provided site-specific solutions for diverse terrain and land parcels.
Why SgurrEnergy
- Independent engineering judgement, separate from EPC, OEM and equipment-supply interests.
- In-house multidisciplinary capability across solar, electrical, civil, structural, grid and transmission engineering.
- Experience coordinating complex utility-scale renewable energy projects and multiple engineering packages.
- Structured technical governance, document review and comment-closure processes.