NEWTry our free Solar Calculator and Proposal Generator instantly. Explore Free Tools →
Professional Engineering Services

Precision Solar Design &
Quotation Tools

Get professional PV system layouts, detailed BOQ documents, and accurate financial analysis from our expert engineering team — to close your solar deals faster and win more projects.

Request a Design
Expert Verified Output

Rooftop Sizing & BOQ Calculator

Estimate wholesale solar system sizing under PM Surya Ghar.

Interactive Tool
Average Monthly Bill6,000
Available Rooftop Area800 sq ft
CAPACITY RECOMMENDED

8 kW

540WP MODULES REQUIRED

15 Panels

GOVT SURYA GHAR REBATE

78,000

EST. ANNUAL SAVINGS

89,600

Estimated Sourcing Bill of Quantities (Wholesale Pricing):
Inverter: 1x 8 kW On-Grid Inverter
DC Cabling: 120m Copper DC Cable
Rails: 16x HDG Mounting Structure Rails
BOS Pack: 1x ACDB/DCDB IP65 Distribution Box
Wholesale system sourcing estimated at 3,36,000 (saving ₹1,04,000 compared to local retail EPC rates).

500+

Solar Projects

24

States Covered

100%

Expert Verified

48hr

Avg Turnaround

End-to-End Solar Lifecycle

From Design to Procurement

An integrated, friction-free journey from early layouts to wholesale sourcing and verified field deployment.

🔌 Powered by Solmarkt:Source All BOQ Components Directly from Solmarkt Marketplace
01

Design

Expert engineering team designs CAD plans & SLDs.

02

BOQ Generation

System compiles material lists based on structural sizing.

03

Source ComponentsLIVE LINK

Direct marketplace access to Modules, Inverters, Structures, and Cables.

Go to Marketplace →
04

RFQ Submission

Broadcast detailed specs to top wholesale distributors.

05

Procurement

Secure payments, bulk pricing discounts, and logistics.

06

Installation

Deploy certified local technicians from Solmarkt Network.

Engineering Catalog

Our Design Portfolio

Comprehensive technical layouts and BOQ estimations for residential, commercial, and utility-scale solar projects.

POPULAR

System Layout Design

Professional PV layout designs optimised for maximum energy generation and minimal shading losses — using industry-standard solar layout tools and CAD software.

  • Shadow analysis
  • String sizing
  • Module placement
  • CAD drawings
FOR FREE ↗

BOQ & Material Lists

Detailed bill of quantities with component specifications and sourcing recommendations — compatible with all major solar EPC software workflows.

  • Component specs
  • Quantity calculations
  • Brand recommendations
  • Cost estimation
FOR FREE ↗

Financial Analysis

Comprehensive CAPEX/OPEX estimates with ROI projections and payback calculations for residential, commercial, and industrial solar projects.

  • CAPEX breakdown
  • O&M costs
  • ROI analysis
  • Payback period
FOR FREE ↗

Generate Solar Proposal

Get a customised solar proposal based on your electricity usage and rooftop capacity — ready to present to clients in minutes.

  • System size recommendation
  • Estimated cost & savings
  • Subsidy eligibility details
  • Expected energy generation
FOR FREE ↗

Solar Calculator

Instantly estimate the ideal solar system size, installation cost, and monthly savings based on electricity usage — India's most accurate rooftop solar calculator.

  • Recommended system size
  • Estimated installation cost
  • Monthly electricity savings
  • Annual energy generation
STABILITY

Structural Design

Wind load analysis and foundation designs compliant with local standards to ensure long-term structural integrity.

  • Wind load calculations
  • Structure stability
  • Foundation design
  • Tilt angle optimization
ELECTRICAL

SLD (Single Line Diagram)

Comprehensive electrical schematics covering AC/DC systems, protections, and cable sizing for solar installations.

  • AC/DC schematic
  • Inverter connections
  • Protection sizing
  • Cable scheduling
COMPATIBILITY

String Sizing Report

Optimal module string configurations matched with inverter voltage windows, adjusted for local temperature ranges.

  • Temperature correction
  • Voc/Isc calculation
  • String layout mapping
  • Inverter voltage matching
3D SIMULATION

Shadow Analysis

Detailed 3D shadow path simulations to identify and mitigate module shading throughout the year.

  • 3D shade simulation
  • Shading loss calculation
  • Near shadow assessment
  • Solar path modeling
BANKABLE

PVSyst Simulation

Industry-standard energy yield simulations and generation reports required by banks and DISCOMs.

  • Generation reports
  • System losses analysis
  • Performance Ratio (PR)
  • Bankable yield assessment
SAFETY

Earthing & Lightning Design

Grounding layout and lightning protection designs to safeguard equipment and personnel from surges.

  • Earth pit calculations
  • Earthing grid design
  • Lightning protection layout
  • Soil resistivity check
COMPLETE

Detailed Engineering Package

Comprehensive drawing and documentation packages ready for procurement, grid approval, and site construction.

  • As-built drawings
  • Technical specifications
  • Grid connection package
  • Procurement datasheets
Quality Assurance

Sample Deliverables

Inspect the quality, structure, and format of our engineering documents. We deliver professional packages compatible with DISCOM and financial audits.

MODEL_SPACE (1:100)AutoCAD

Layout Drawings

CAD / PDF

Optimised panel layouts in CAD (DWG) and PDF.

📥 Download Sample File

BOQ Reports

XLSX / PDF

Sourcing specs & materials in Excel and PDF.

📥 Download Sample File
PAYBACK4.2 Yrs
IRR24.8%

Financial Models

PDF / XLSX

ROI projection tables and investment models.

📥 Download Sample File
PV Array
Inverter
Grid
DC: 1000VAC: 415V

SLD Drawings

CAD / PDF

AC/DC schematics and protection design.

📥 Download Sample File
PR: 81.2%
System Losses11.4%
Soil Derating2.0%
Temp Derating4.8%

PVSyst Reports

PDF Report

Yield simulation & loss analysis PDFs.

📥 Download Sample File
Performance SLA

Delivery Timelines

Our standard turnarounds ensure your bids and engineering requests are dispatched on time, every time.

Service TypeGuaranteed TurnaroundFormatCompliance Target
BOQ & Sourcing Lists24 HoursXLSX / PDFWholesale distributor-ready specifications
Layout Design & Module Map24–48 HoursDWG / PDFDISCOM site layout guidelines
SLD (Single Line Diagram)48 HoursDWG / PDFIEC safety & cable protection standards
PVSyst Simulation72 HoursPDF ReportBankable energy yield estimations
Transparent Pricing

Starting From

Clear, competitive rates for professional design services. Get high-quality engineering without overheads.

BOQ & Sourcing lists

₹499/ per layout
Sourcing specifications
Quantity estimations
Wholesale pricing match
24h Delivery guarantee
Order Sourcing Design
POPULAR CHOICE

System Layout Design

₹999/ per project
Shadow path simulations
Optimized module placement
Cable routing schematics
24–48h Delivery SLA
Order Sourcing Design

Detailed Engineering Package

Custom Quote/ tailored specs
CAD SLD drawings
Structural calculations
PVSyst generation reports
DISCOM approval packet
Order Sourcing Design
Disclaimer: Prices shown above are indicative starting rates. Final engineering package pricing may vary depending on project complexity, size (kW/MW), structures type (ground mount vs roof), and utility-specific single line layout requirements.
Verified Credentials

Why EPCs Choose Solmarkt Engineering Services

Industry-standard modeling, verified accuracy, and compliance guarantee for solar developers and installation networks.

Experienced Solar Engineers

Designs authored by certified solar engineers with 10+ years of cumulative expertise spanning commercial and residential projects.

Brand Neutral Design

Module sizing, string configuration, and electrical parameters designed to be fully compatible with any manufacturer brands.

Fast Turnaround

Layout drafts and structural analysis packages delivered within 24 to 48 hours to help you meet quick client bidding deadlines.

Utility Scale Experience

Engineering team has designed 50+ MW of solar systems across utility-scale ground mount and complex industrial roofs.

Bankable Reports

PVSyst simulations, single line diagrams, and shadow loss projections prepared to standard bank loan and subsidy specifications.

Industry Standard Software

All engineering packages are constructed using AutoCAD, SketchUp, and PVSyst to ensure standard drafting compatibility.

Tools & Technology

Software Expertise

All designs, simulations, and schematics are built using the industry's most reliable and compliant engineering software.

💻
Drafting Std

AutoCAD

Precision 2D Layouts & SLDs

💻
Industry Std

PVsyst

Bankable Yield Simulations

💻
3D Mapping

Helioscope

Rapid Site Modeling & Sizing

💻
Visualisation

SketchUp

3D Shade & Obstruction analysis

💻
System Sizing

PV*SOL

Grid Integration & Battery modeling

Design Packages

Choose Your Design Package

Simplify your engineering selection with our pre-configured solar design service packages.

Basic Package

Capacity Range:Residential (1–10 kW)

Essential layout and bill of quantities to size and cost your project.

₹1,299
Layout Design
BOQ & Sourcing list
24–48hr standard turnaround
Choose Basic
MOST POPULAR

Professional Package

Capacity Range:Commercial (10–500 kW)

Comprehensive proposal package with layouts, BOQ, and ROI projections.

₹1,999
Layout Design
BOQ & Sourcing list
Financial Analysis report
Priority drafting turnaround
Choose Professional

Enterprise Package

Capacity Range:Industrial (500 kW+)

Complete engineering designs including SLD drawings and structural reports.

Custom Quote
Full Engineering Package
SLD (Single Line Diagram)
Structural Design report
PVSyst yield simulation
Detailed Engineering documentation
Request Quote
Customer Stories

What Clients Say

See how solar EPC companies and system developers speed up their proposals using Solmarkt engineering.

"Received complete BOQ and layout within 24 hours and secured the project."

Solar Developer

Gujarat

Residential Sizing

"Solmarkt's engineering drawings were approved by the state utility DISCOM on the first attempt. Saved us weeks of back-and-forth."

EPC Partner

Maharashtra

Commercial Grid Connect

"The wind load analysis and structural calculations from Solmarkt were crucial in securing bank loans for our 2MW factory shed roof solar installation."

Director, BlueSky Solar

Delhi NCR

Industrial MW Scale

Let's Start Your Design 🎨

Submit your basic project details and our engineering team will get in touch with a customized quote.

24h Turnaround

First layout draft dispatched in one business day.

Standard Neutral

Component sizing optimized across all primary brands.

Expert Advisory

Direct consult access with senior solar technicians.

Confidential & Secure

Your project data is protected by our professional privacy standards. We never share site locations without permission.

📁

Drag & drop files here or browse

Please upload your **Electricity Bill**, **Roof Images**, **Site Layout**, or **Google Earth Screenshots** to help our engineers.

Electricity BillRoof ImagesSite LayoutGoogle Earth Screenshot

Trusted by 500+ Solar Projects

Solmarkt engineering tools are used by EPCs and solar installers across 24 states to ensure accuracy and compliance with local DISCOM guidelines and national solar design standards.

IS 14286 VERIFIED
IEC 61215 COMPLIANT
CAD STANDARD ALIGNED

500+

Solar Projects Sized

24

States Covered

100%

CAD Standards Compliant

48hr

Avg Turnaround

Start Your Solar Design Today — For Free

Use India's most accurate solar calculator and proposal generator. No signup required for basic tools. Expert design available for commercial and industrial projects.

Try Solar CalculatorRequest Expert Design