Engineering Services Scope

Concept Engineering

Initial design phase establishes system configuration, equipment selection, layout optimization, and preliminary performance estimates. Concept engineering includes site layout with module arrangement and spacing, inverter placement and architecture selection, cable routing strategy, transformer and switchgear locations, and balance-of-system component identification.

Concept designs provide cost estimates accurate to within 10 to 15 percent. This supports investment decisions and land acquisition planning before detailed engineering begins.

Detailed Engineering Packages

Complete technical documentation for procurement, installation, and commissioning. Detailed engineering includes structural drawings for mounting systems and foundations, electrical single line diagrams and three line diagrams, civil layout with grading and drainage plans, cable schedule with routing drawings, equipment specifications with technical datasheets, bill of materials with quantities and part numbers, installation method statements, and testing and commissioning procedures.

Detailed engineering packages support EPC bidding, equipment procurement, contractor mobilization, and regulatory approvals. Documentation is formatted to ISO standards and includes revision control.

Structural Design

Structural engineering covers mounting structure design for fixed tilt, carport, or elevated installations. Analysis includes wind load calculations per local building codes, snow load assessment for relevant geographies, seismic design where required, foundation design with soil bearing capacity analysis, and structural member sizing with factor of safety verification.

We've designed structures for high-wind coastal installations in Sweden (40 MW bifacial), elevated carport systems in Bahrain (10 MW), and industrial rooftop systems in India (17 MW). Designs account for site-specific environmental conditions and equipment loads.

Electrical Design

Electrical engineering defines DC and AC architecture, protection schemes, and grid interconnection. Scope includes string sizing and inverter selection based on voltage limits and maximum power point tracking, DC combiner box specifications and locations, AC collection system design with voltage drop calculations, transformer sizing and vector group selection, switchgear and protection relay coordination, earthing and lightning protection system design, and cable sizing with voltage drop and current carrying capacity verification.

Electrical designs comply with local grid codes and utility interconnection requirements. Protection schemes include DC and AC side isolation, overcurrent protection, earth fault protection, and arc fault detection where mandated.

Civil Layout and Foundations

Civil engineering covers site grading, drainage, access roads, fencing, and foundation design. Scope includes topographic survey integration, cut and fill calculations, stormwater management with drainage channels, site access and internal road layout, perimeter fencing and gate locations, foundation design for pile-driven or concrete footings, and soil investigation report review with bearing capacity validation.

Civil designs account for site constraints including existing structures, utility corridors, and environmental setbacks. Drawings include grading plans, drainage profiles, and foundation detail drawings.

Performance Modeling

Energy yield analysis uses PVsyst and Helioscope for bankable performance projections. Modeling incorporates site-specific meteorological data with 20-year averages, module specifications including temperature coefficients, inverter efficiency curves and MPPT performance, shading analysis from nearby structures or terrain, soiling and snow losses based on regional data, system losses including DC and AC cable losses, transformer losses, and availability assumptions.

Performance reports include monthly energy generation projections, performance ratio calculations, specific yield (kWh per kWp), and degradation-adjusted lifetime energy output. These reports support financial modeling and performance guarantee negotiations.

Single Line Diagrams

Electrical single line diagrams show system architecture from DC strings through AC grid interconnection. Diagrams include DC string configuration and combiner boxes, inverter connections and specifications, AC collection system with cable sizes, transformer connections and ratings, switchgear and breaker ratings, protection devices and relay settings, metering points for generation and export, and earthing and bonding connections.

Single line diagrams serve as master reference for equipment procurement, installation execution, and testing procedures.

Cable Routing and Inverter Architecture

DC and AC cable routing optimizes trench layouts to minimize cable losses and installation costs. Design includes DC cable routing from arrays to inverters with voltage drop verification, AC cable routing from inverters to transformers, medium voltage cable routing to grid interconnection point, cable tray and conduit sizing, and trenching layout with depth specifications per local codes.

Inverter architecture selection (string, central, or hybrid) depends on system size, terrain constraints, and maintenance access requirements. We've designed string inverter systems for distributed rooftop installations and central inverter systems for utility-scale ground mount projects.

Bill of Materials Preparation

Comprehensive equipment and material lists support procurement and cost estimation. BOM includes module quantities with manufacturer and model specifications, inverter quantities and ratings, mounting structure components with material grades, electrical cables with conductor sizes and insulation ratings, transformers and switchgear with technical specifications, protection devices and monitoring equipment, civil materials including foundations and fencing, and installation consumables.

BOMs are formatted for direct use in supplier RFQs and include alternates for critical components to support competitive bidding.

Tender Documentation and Technical Evaluation

We prepare tender documents for EPC contractor selection including scope of work with technical specifications, equipment schedules and approved manufacturer lists, installation standards and quality requirements, testing and commissioning procedures, documentation deliverables, warranty terms, and payment milestone definitions.

Technical evaluation services review EPC bids for compliance with tender requirements, equipment specification validation, pricing reasonableness assessment, execution timeline evaluation, and contractor qualification verification. We provide bid comparison matrices and recommendations.

Regulatory and Compliance Documentation

Engineering packages include documentation for regulatory approvals. This covers grid interconnection applications with technical specifications, net metering or feed-in tariff approvals, electrical safety compliance (CEIG in India, electrical inspector approvals in other regions), building permits for structural installations, and environmental clearances where required.

Compliance documentation references applicable standards (IEC, MNRE, BIS, AS/NZS, BS 7671) and includes test certificates, equipment certifications, and installation compliance declarations.

Commissioning Support

On-site or remote support during installation and commissioning phases. Support includes design clarifications during installation, resolution of field issues or design modifications, witnessing of installation milestones, review of installation quality and compliance, commissioning test plan preparation, and performance validation testing.

Commissioning support ensures installations match engineering intent and achieve design performance.

As-Built Documentation

Final documentation captures installed system configuration including as-built drawings reflecting field modifications, updated equipment lists with serial numbers, test certificates and commissioning reports, O&M manuals, and warranty documentation. As-built packages support handover, financing close, and long-term maintenance planning.

Engineering Portfolio

Denmark (60 MW Utility-Scale): Fixed tilt ground mount system with tier-1 bifacial modules. Engineering covered structural design for high-wind coastal conditions, medium voltage collection system, grid interconnection at 150 kV, and compliance with Danish building codes and electrical standards.

Sweden (40 MW Bifacial High-Wind): Utility-scale installation designed for extreme wind loads and snow conditions. Structural engineering included wind tunnel analysis and foundation design for coastal clay soils. Electrical design incorporated string inverter architecture for distributed generation.

Bahrain (10 MW Solar Carport): Elevated carport structure over parking areas. Engineering included structural analysis for vehicle clearance and wind uplift, electrical design for distributed string inverters, and integration with existing building electrical systems.

India (17 MW Industrial Rooftop Cluster): Multiple rooftop installations across textile manufacturing facilities. Engineering covered roof structural assessment, distributed inverter placement, AC collection across buildings, and MNRE/BIS compliance documentation.

Australia and East Africa (Hybrid Solar + BESS): Feasibility and concept engineering for solar-plus-storage systems. Work included battery sizing for peak shaving, power conversion system integration, control logic design, and off-grid operation planning.

Portfolio demonstrates engineering capability across utility-scale ground mount, industrial rooftop, carport, and hybrid storage configurations.

Engineering Tools and Software

PVsyst 7.4: Energy yield modeling with hour-by-hour simulation, shading analysis, and loss calculations. Used for bankable performance projections.

Helioscope: Layout optimization, irradiance modeling, and shading analysis. Supports rapid design iterations and string layout planning.

AutoCAD: Detailed engineering drawings including site layouts, structural details, electrical routing, and civil grading plans.

SketchUp: 3D modeling for visual representation, shading studies, and client presentations.

ETAP: Electrical transient analysis for protection coordination, short circuit analysis, arc flash studies, and load flow analysis. Used for utility-scale projects and complex electrical systems.

Microsoft Excel and Custom Tools: Cable sizing calculations, voltage drop analysis, BOM preparation, and cost estimation.

Standards and Compliance

All engineering aligns with regional standards and grid codes.

IEC Standards: IEC 61215 (module qualification), IEC 61730 (module safety), IEC 62446 (grid-connected system installation), IEC 61724 (performance monitoring).

India: MNRE guidelines, BIS standards, Central Electricity Authority (CEA) regulations, state-specific net metering policies.

Australia: AS/NZS 5033 (installation of PV arrays), AS/NZS 3000 (wiring rules), AS/NZS 1170 (structural design).

Europe: European Low Voltage Directive, local building codes (Denmark, Sweden, Lithuania), grid connection codes per country.

Middle East: BS 7671 (wiring regulations), local civil defense and municipality requirements (Bahrain).

Compliance documentation is included in engineering packages to support approvals and grid interconnection.

Who Engages Engineering Services

EPC Contractors: Require detailed engineering for projects they've won through tenders. Engineering services accelerate project execution and provide design liability coverage.

Project Developers: Need engineering for financing approval, EPC tender preparation, or independent design validation before construction.

Asset Owners: Engage engineering for system expansion, retrofit design, or performance improvement studies on operating plants.

Financial Institutions: Require independent engineering review for technical due diligence before project financing.

Equipment Suppliers: Need application engineering for specific installations or performance validation studies.

Engineering Delivery Timeline

Concept Engineering: 1 to 2 weeks for projects up to 10 MW. Larger projects require 2 to 3 weeks.

Detailed Engineering: 3 to 6 weeks for projects from 1 MW to 10 MW. Utility-scale projects beyond 10 MW require 6 to 12 weeks depending on complexity.

Tender Documentation: 1 to 2 weeks after detailed engineering completion.

Commissioning Support: Variable based on project size and on-site requirements. Typically 1 to 2 weeks per project.

Timeline depends on data availability, site access for surveys, and client review cycles. Fast-track engineering is available for projects with compressed timelines.