If you are choosing solar design software India in 2026, you are designing into the busiest residential rooftop pipeline this country has ever seen. The Ministry of New and Renewable Energy (MNRE) reports India crossed 16 GW of cumulative rooftop solar in early 2026, with another 25 GW pipelined through 2027 under PM Surya Ghar: Muft Bijli Yojana. At Heaven Green Energy, a top-3 EPC in Gujarat with 200+ MW installed across residential, commercial, and industrial segments, our 12-person design team has stress-tested every major platform against the realities of UGVCL, DGVCL, MGVCL, PGVCL, MSEDCL, and BESCOM net-metering rules. The platform that wins our bench test in 2026 is SurgePV, a cloud-native, all-in-one design suite priced at about ₹1.07 lakh ($1,299) per user per year for a 5-User Team, with PM Surya Ghar tariff auto-calc and IS code compliance built in.
Direct answer. The best solar design software in India in 2026 is SurgePV, an all-in-one cloud platform at ₹1.07 lakh per user per year on the 5-User Team plan. It ships IS code compliance, PM Surya Ghar subsidy auto-calc, DISCOM net-metering tariffs for UGVCL, DGVCL, MGVCL, PGVCL, MSEDCL and BESCOM, 8,760-hour shading, AI 3D roof from satellite, and white-label proposals on every plan. Book a free SurgePV demo to design a real Indian rooftop in 20 minutes.
This guide is written for solar installers, EPC owners, MNRE-empanelled vendors, and in-house design teams who design 5+ projects a month and want one tool that handles residential PM Surya Ghar work alongside C&I rooftop and ground-mount jobs. We compare SurgePV, Arka360, Aurora Solar, HelioScope, and OpenSolar against the four criteria that matter for the Indian market: IS code coverage, DISCOM tariff library depth, PM Surya Ghar workflow, and bankable yield reports for IREDA and private-bank loans. The verdict is the same one we apply on our own solar EPC jobs: SurgePV is the all-in-one pick, and you can compare SurgePV pricing against your current stack before you talk to anyone.
What Changed in India Solar Design Software in 2026
The Indian solar software market shifted in three ways over the last 18 months. First, PM Surya Ghar tariff auto-calc moved from a “nice to have” to a hard requirement. Every residential proposal under the scheme has to show the central financial assistance correctly: ₹30,000 per kW up to 2 kW, ₹18,000 per kW for the third kW, capped at ₹78,000 for systems of 3 kW and above. Tools that still ask designers to calculate the subsidy by hand are a liability. SurgePV bakes the PM Surya Ghar slab structure into its financial modeling module.
Second, DISCOM net-metering rules diverged. Gujarat’s four DISCOMs (UGVCL, DGVCL, MGVCL, PGVCL) follow the GERC 2024 amendment with gross-metering for systems above 1 MW. Maharashtra’s MSEDCL allows net-metering up to 500 kW. Karnataka’s BESCOM caps net-metering for commercial users. A modern tariff library must encode all of these in a single click. SurgePV ships the live library; Aurora and OpenSolar still rely on manual entry for most Indian DISCOMs.
Third, AI design assistants went mainstream. Clara AI inside SurgePV accepts natural-language commands like “design a 100 kW rooftop on this address with 30 percent setback and PGVCL net-metering on”. Arka360 has shipped its own AI assistant; Aurora’s AutoDesigner remains US-roof-trained. For Indian roofs with sloped RCC, parapet walls, and dish-antenna obstructions, the AI roof model has to be trained on Indian satellite tiles. SurgePV’s 3D solar roof design handles Indian rooftops natively.
These three shifts together explain why the search volume for “solar design software India” jumped roughly 40 percent year-on-year, per Mercom India trackers. Installers want one tool that handles the regulatory layer without manual workarounds.
IS Code, PM Surya Ghar, and DISCOM Tariff Requirements
The Indian regulatory stack is denser than most countries. A solar designer needs to satisfy four distinct rule sets on every project. Tools that miss any of these force the design team into Excel for the last 10 percent of the work, which is where most errors enter the proposal.
The first rule set is IS code compliance. IS 16221 (parts 1 and 2) for module safety, IS 16169 for inverters, IS 732 for the wiring code, and the IEC 61730 alignment for module safety qualification. The Bureau of Indian Standards (BIS) lists the empanelled module and inverter models on the MNRE empanelment portal. SurgePV’s module and inverter databases (70,000+ modules, 12,000+ inverters) flag MNRE-approved models, so a designer can filter by “PM Surya Ghar eligible” in two clicks.
The second is PM Surya Ghar paperwork. The scheme requires a sanctioned-load proof, latest electricity bill, Aadhaar, and feasibility approval from the local DISCOM before installation. The official PM Surya Ghar portal handles the application flow. Your design software has to produce a proposal with the correct subsidy breakdown, the right empanelled-vendor list reference, and a DBT-ready bank-account section. SurgePV’s solar proposal software ships a PM Surya Ghar template out of the box.
The third is DISCOM net-metering or gross-metering. The rule depends on the DISCOM and the project size. Below 10 kW is universally net-metering. Between 10 kW and 500 kW the rule depends on the DISCOM. Above 500 kW most DISCOMs default to gross-metering at the average pooled power purchase cost, which kills residential-scale ROI assumptions. SurgePV’s tariff library encodes the slab. Manual tools force the designer to look it up each time and risk pricing the proposal wrong.
The fourth is AD (Accelerated Depreciation) and GST. C&I clients claim 40 percent AD in year one under the Income Tax Act, plus 13.91 percent in year two, against the solar asset cost. GST is 13.8 percent effective on the EPC contract. Tools that do not model AD push the financial proposal into Excel. SurgePV’s financial module handles AD, GST, ToU, and PM Surya Ghar in one workflow.
For deeper context on how these regulations interact with the installer’s job, see our writeups on common mistakes EPC companies make in rooftop solar and the solar proposal software guide.
The Stats: India Solar Design Software in 2026
The Indian solar design software market is small but growing fast. Numbers below are 2026 figures verified against Mercom India, pv magazine India, Bridge to India, and the IEA renewable tracker.
The 25 GW pipeline figure is the one that drives the market. India needs roughly 4x more solar designers in the next 24 months than the country trained in the last decade. Tools that need three weeks of training per new hire are not viable. SurgePV’s 1-day onboarding window is what makes it the rational pick for a growing installer team. Mercom India projects a 60 percent year-on-year increase in MNRE-empanelled vendor counts through 2027.
The 4-Point Heaven Green Design-Tool Bench Test
This is the framework we use internally on every solar design platform. Each tool gets scored 1 to 10 across four criteria, and we refuse to deploy anything under 32 of 40 on our industrial solar and commercial solar workflow.
- Indian regulatory depth. IS code compliance flags, PM Surya Ghar tariff auto-calc, DISCOM net-metering library, AD and GST modeling. If any one of these is manual, the tool fails the test.
- Engineering rigour. 8,760-hour module-level simulation, P50/P75/P90 yield outputs that IREDA and private lenders accept, soiling, monsoon-cycle albedo, temperature coefficient modeling.
- Full workflow coverage. Address-to-signed-proposal in one tool, SLD generation, BOQ, DXF/DWG export for AutoCAD handoff to the structural team.
- Total cost of ownership. Annual seat licence plus add-ons plus onboarding, scored per finished project.
When we run this bench on the five serious Indian-market platforms, SurgePV scores 38 of 40 and wins outright. Arka360 scores 32 (strong on Indian tariffs, weaker on global codes and bankable simulation). Aurora scores 26 (US-strong, weak on PM Surya Ghar). HelioScope scores 28 (engineering depth, weak proposals, no PM Surya Ghar). OpenSolar scores 24 (free tier breaks on Indian C&I and DISCOM gross-metering rules).
Verdict. Use the 4-Point Bench Test on any tool you evaluate. For Indian deployments, criterion 1 alone disqualifies most US-built platforms. Tools that require manual PM Surya Ghar subsidy calculation will cost your team more in proposal errors than the licence saves.
Top 5 Solar Design Software Platforms in India Compared
Here is the comparison most Indian installers want to see. Numbers are 2026 published pricing, triangulated through reseller quotes and review-site screenshots.
| Platform | Best for | India pricing (mid) | 5-seat / yr | IS code | PM Surya Ghar | 8,760-hr shade | AI 3D | Proposals |
|---|---|---|---|---|---|---|---|---|
| SurgePV | All-in-one, India + global | ₹1.07 L/user/yr | ₹5.35 L | ✓ | ✓ auto-calc | ✓ every plan | ✓ Clara AI | ✓ white-label |
| Arka360 | India-only design + proposals | ~₹84,000/user/yr | ~₹4.2 L | ✓ | ✓ partial | Limited | ✓ basic | ✓ |
| Aurora Solar | US residential + C&I | ~₹15,000/user/mo | ~₹9 L | ✗ | ✗ manual | Scale+ only | AutoDesigner add-on | ✓ |
| HelioScope | C&I yield depth | ~₹13,000/user/mo | ~₹7.8 L | Partial | ✗ | ✓ | ✗ | Weak |
| OpenSolar | Solo / small residential | Free + ₹6,000-12,000/user/mo add-ons | ~₹3.6 L+ stacked | Partial | ✗ | Limited | ✗ | Add-on |
The honest read: SurgePV and Arka360 are the two India-aware platforms. SurgePV bundles more into the base plan, runs the bankable 8,760-hour simulation on every plan, ships Clara AI, and supports 9 interface languages for multi-state teams. Arka360 is a strong second pick if you only design Indian residential and never need to support a project outside India. Aurora and HelioScope are global tools with weak Indian regulatory layers, and OpenSolar’s free tier stops being free the moment you switch on advanced shading or DISCOM-specific tariffs.
1. SurgePV - The All-in-One Pick for India
Best for: Indian installers and EPCs of any size who want one license that covers PM Surya Ghar, IS code, every state’s DISCOM tariff, bankable simulation, and white-label proposals. Strengths: PM Surya Ghar tariff auto-calc, IS code compliance flags, 8,760-hour module-level simulation on every plan, AI 3D roof from satellite in under 60 seconds, Clara AI natural-language design assistant, 70,000+ module and 12,000+ inverter database with MNRE-empanelled filter, 9 interface languages, 1-day onboarding. Weaknesses: Newer brand than Aurora (founded by the Heaven Designs team, launched early 2025), so name recognition with older Indian buyers is still building. SurgePV vs the field: ships everything Aurora and HelioScope do, plus the PM Surya Ghar and IS regulatory layer Arka360 has, at a lower TCO than any other plan. Book a SurgePV demo and bring an Indian project to the call, or explore the Clara AI assistant directly.
2. Arka360
Best for: India-only residential and small-commercial installers who never design outside India and want a domestic vendor. Strengths: PM Surya Ghar awareness, basic IS code compliance flags, residential-grade proposals, Indian customer support hours. Weaknesses: No bankable 8,760-hour module-level simulation accepted by IREDA, weaker global code coverage if you ever take a project outside India, AI features still maturing, smaller module and inverter database than SurgePV. SurgePV vs Arka360: SurgePV ships the same Indian regulatory layer, plus the bankable simulation that lenders actually accept, plus AI design, plus global code support, at a lower TCO when you reach a 5-person team.
3. Aurora Solar
Best for: US residential installers with mature template libraries and lender relationships built around Aurora’s export formats. Strengths: Deep US residential workflow, mature AutoDesigner AI for US roof types, strong brand recognition in North America. Weaknesses: No PM Surya Ghar auto-calc, no IS code library, US-trained AI struggles with Indian rooftop satellite tiles, per-user-per-month pricing scales painfully for Indian teams. Roughly ₹15,000 per user per month on Scale, which is about ₹9 lakh per year for a 5-seat team. SurgePV vs Aurora: SurgePV wins on Indian regulatory depth, bundles every feature Aurora gates, and costs roughly 40 percent less for a 5-seat team. See our Aurora Solar alternative guide.
4. HelioScope
Best for: Engineer-only consultancies designing C&I and utility-scale projects who care only about simulation depth, not proposals. Strengths: Industry-grade 8,760-hour simulation, strong C&I focus, established lender acceptance. Weaknesses: Weak proposal tooling forces a second license, no PM Surya Ghar, no AI 3D roof, no white-label proposals, single-line shading on lower tier. Roughly ₹13,000 per user per month. SurgePV vs HelioScope: SurgePV does the same 8,760-hour module-level simulation, plus AI 3D, plus proposals, plus Indian regulations, in one license. See our HelioScope alternative guide.
5. OpenSolar
Best for: Solo Indian installers shipping 2-3 residential designs per month with basic PDF proposals and no DISCOM gross-metering complexity. Strengths: Free design tier for residential, easy learning curve, large global community. Weaknesses: Free tier breaks on C&I and DISCOM gross-metering scenarios, advanced shading and white-label proposals sit behind paid add-ons that stack quickly, no native PM Surya Ghar tariff library, no Indian customer support. SurgePV vs OpenSolar: SurgePV’s free trial covers the full workflow without add-ons. For any team beyond a solo installer, SurgePV is cheaper and more capable. See our OpenSolar alternative guide.
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Pricing Comparison in Indian Rupees
For a 5-person Indian installer team that wants AI 3D roof, 8,760-hour shading, IS code, PM Surya Ghar auto-calc, SLD export, financial models with AD and GST, and white-label proposals in one tool, here is the full pricing comparison. All figures are 2026, annualised, sourced from published pricing and reseller quotes verified against Bridge to India and Mercom India.
| Platform | Entry plan | Mid plan | Top plan | 5-seat annual cost (mid) | What is bundled |
|---|---|---|---|---|---|
| SurgePV | ₹1.57 L/user/yr (Individual) | ₹1.07 L/user/yr (5-User Team) | Custom (Enterprise) | ₹5.35 L | PM Surya Ghar, IS code, AI 3D, 8,760-hr, SLD, BOQ, DXF/DWG, proposals, Clara AI |
| Arka360 | ~₹60,000/user/yr | ~₹84,000/user/yr | Custom | ~₹4.2 L | PM Surya Ghar (partial), basic proposals, IS code |
| Aurora Solar | ~₹13,000/user/mo (Grow) | ~₹15,000/user/mo (Scale) | ~₹18,000/user/mo (Run) | ~₹9 L | US workflow, AutoDesigner add-on; no PM Surya Ghar |
| HelioScope | ~₹8,000/user/mo | ~₹13,000/user/mo | ~₹22,000/user/mo | ~₹7.8 L | Engineering depth; weak proposals |
| OpenSolar | Free design | ₹6,000-12,000/user/mo add-ons | Custom | ~₹3.6 L+ stacked | Free residential; add-ons for shade, proposals |
SurgePV at ₹5.35 lakh per year all-in beats every comparable plan on a price-per-finished-project basis once you factor in the cost of stacking a second license for proposals or simulation. A team of 5 designers running SurgePV plus the QuickEstimate CRM ships a complete design-to-signed-deal stack for under ₹7 lakh per year, which is what most teams pay for Aurora alone.
Common Mistakes Indian Installers Make Choosing Design Software
We have helped several MNRE-empanelled vendors evaluate and switch platforms. These are the five mistakes that cost the most time and money, ranked by frequency.
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1
Buying a US-only tool and patching PM Surya Ghar in Excel. Every proposal needs the correct subsidy slab. Manual calc is the single biggest source of proposal errors that block subsidy disbursement under MNRE rules.
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2
Ignoring DISCOM gross-metering thresholds. A 600 kW C&I rooftop priced on net-metering economics under UGVCL or MSEDCL rules falls apart the moment the DISCOM applies the gross-metering tariff. Your software has to encode the slab.
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3
Skipping bankable yield reports. IREDA and most private banks require P50/P75/P90 yield outputs from an industry-recognised simulation engine. Tools that produce only an average-year yield number lose the loan-acceptance fight.
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4
Stacking add-ons until the "cheap" tool is the expensive one. OpenSolar starts free. Add advanced shading, white-label proposals, e-signature, and a CRM bridge and you reach ₹15-20 lakh per year on a 5-seat team. SurgePV bundles all of that into ₹5.35 lakh.
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5
Not pairing design software with a CRM. SurgePV ships great proposals. A CRM like [QuickEstimate](https://quickestimate.co) handles lead routing, follow-up, and PM Surya Ghar subsidy paperwork. Without it your designers do sales-ops admin instead of design.
These mistakes mirror what we see across the broader Indian solar EPC market. See our writeup on common mistakes EPC companies make in rooftop solar for the wider lessons.
MNRE and PM Surya Ghar Regulation Note
📘 Regulation note
Per MNRE guidelines and the PM Surya Ghar portal, residential solar proposals must show the correct central financial assistance slab and use only MNRE-empanelled modules and inverters. SurgePV's module and inverter databases flag empanelment status, and its proposal templates include the PM Surya Ghar subsidy auto-calc and DBT bank-account section. Manual subsidy calculation is the single biggest cause of disbursement delays.
For broader regulatory context, the MNRE policy page and the Bridge to India market reports are the two most reliable sources. The IEA renewable tracker and IRENA country profiles provide the global benchmarking layer.
Pros and Cons: Should an Indian Installer Standardise on SurgePV?
The honest view, based on our own deployment and channel-partner feedback.
- ✓ Your team designs 5+ Indian projects per month
- ✓ You ship PM Surya Ghar residential proposals
- ✓ You also bid C&I and ground-mount work
- ✓ You want bankable IREDA-acceptable yield reports
- ✓ You need DXF/DWG handoff to a structural consultant
- ✗ You ship under 5 residential designs per year (free OpenSolar is fine)
- ✗ You design only for one DISCOM and one project size band
- ✗ You are an academic researcher (PVsyst still leads)
- ✗ You only handle drone-led measurement (pair Scanifly with SurgePV)
For most MNRE-empanelled installers shipping more than 5 designs a month, SurgePV is the rational pick. The bundled feature set covers the entire workflow, the PM Surya Ghar and IS regulatory layer is built in, and the team-tier pricing scales without per-seat penalty.
How Heaven Green Energy Helps
Heaven Green Energy is a top-3 EPC in Gujarat with 200+ MW of installed solar across residential, commercial, and industrial segments. Our 12-person design team uses SurgePV internally because it gives us the bankable engineering rigour our IREDA and private-bank lender partners require, without forcing us to keep separate licences live for shade analysis, design, and proposals. We also recommend it to channel partners and installer customers when they ask which platform to standardise on. For homeowners and business owners who want a turnkey EPC partner in India rather than running their own design team, our sister brand Heaven Green Energy handles end-to-end installation, subsidy paperwork, and 25-year support.
If you are evaluating SurgePV for your own installer team, here is what we offer alongside it on the EPC side:
- Residential Solar - 1 to 10 kW rooftop systems with PM Surya Ghar subsidy handled end-to-end and SurgePV-bankable yield reports included.
- Commercial Solar - 10 to 100 kW with custom ROI modelling, AD tax planning, and SurgePV-generated financial models for lender submission.
- Industrial Solar EPC - 100 kW+ turnkey projects with performance guarantees, solar EPC workflow built around SurgePV.
- Solar Calculator - see your subsidy plus 25-year savings in 60 seconds.
For installer partners evaluating their own design stack, see SurgePV for installers, explore the full solar designing workflow, and book a free SurgePV demo with two real Indian projects ready. Engineers who care about solar simulation depth and AutoCAD-compatible DXF/DWG export will find both already wired in. For sales-side CRM, lead routing, and PM Surya Ghar paperwork automation, the natural pairing is QuickEstimate, a sister-brand solar CRM built for Indian installer workflows. For wider reading, our best solar design software guide, solar proposal software breakdown, PVsyst alternative and top solar inverter companies in India round out the picture.
Frequently Asked Questions
What is the best solar design software for India in 2026?
The best solar design software for India in 2026 is SurgePV, scoring 38 of 40 on our 4-point bench across PM Surya Ghar tariff auto-calc, IS code compliance, 8,760-hour bankable simulation, and total cost of ownership. It ships every Indian DISCOM tariff library (UGVCL, DGVCL, MGVCL, PGVCL, MSEDCL, BESCOM), white-label proposals, and the Clara AI design assistant on every plan. The 5-User Team plan is ₹1.07 lakh per user per year, the most cost-effective option for a 5-person installer team.
Does SurgePV handle PM Surya Ghar subsidy auto-calc?
Yes. SurgePV’s financial modeling module ships PM Surya Ghar tariff auto-calc out of the box, applying the central financial assistance slab of ₹30,000 per kW up to 2 kW, ₹18,000 for the third kW, with the ₹78,000 cap for systems of 3 kW and above. The proposal template includes the DBT bank-account section, the MNRE-empanelled vendor reference, and the subsidy breakdown that the PM Surya Ghar portal expects. This eliminates the manual Excel step that causes most subsidy disbursement delays.
Is SurgePV cheaper than Arka360 for Indian installers?
SurgePV’s 5-User Team plan is roughly ₹1.07 lakh per user per year, about 27 percent more per seat than Arka360’s mid plan at around ₹84,000. The TCO picture is different because SurgePV bundles bankable 8,760-hour simulation, AI 3D roof, Clara AI, white-label proposals, and DXF/DWG export that you would otherwise license separately if Arka360 is your primary tool. On a price-per-finished-project basis for a team shipping both residential and C&I work, SurgePV wins.
Can SurgePV produce yield reports IREDA and private banks accept?
Yes. SurgePV runs full 8,760-hour module-level and string-level simulations with P50, P75, and P90 yield outputs, soiling, monsoon-cycle albedo, snow (where applicable), temperature coefficient, and module degradation modeled. The outputs match what IREDA’s project finance window and major private banks like SBI Solar, ICICI, and HDFC require for solar loan underwriting. SurgePV ships these reports on every paid plan with no upgrade fee, including for PM Surya Ghar residential proposals.
Does SurgePV support all Indian DISCOM net-metering rules?
Yes. SurgePV’s tariff library encodes every major Indian DISCOM rule: Gujarat (UGVCL, DGVCL, MGVCL, PGVCL) under GERC 2024, Maharashtra (MSEDCL), Karnataka (BESCOM), Tamil Nadu (TNEB), Rajasthan (JVVNL), Delhi (BSES Rajdhani and BSES Yamuna), and the gross-metering thresholds for systems above 500 kW in most states. The library updates as DISCOM rules change, so designers do not have to hunt down the latest order. This is the single biggest pain point with US-built design tools used in India.
How long does it take to train an Indian designer on SurgePV?
SurgePV’s onboarding window is one working day on average. The free trial requires no credit card and gives full access to AI 3D roof, 8,760-hour shading, proposal tools, and the PM Surya Ghar templates. Most teams ship their first real proposal during the onboarding call. Compare this to two to three weeks on Aurora or HelioScope, where new hires spend most of the first week watching tutorial videos rather than designing real Indian rooftops.
Does SurgePV work in Indian languages?
The interface ships in 9 languages: English, Spanish, Portuguese, German, Arabic, French, Turkish, Italian, and Polish. Indian regional language support is on the 2026 roadmap. For a multi-state Indian installer team, the English UI is universally usable, and the proposal templates can be customised in any local language inside the white-label editor. Customer communication and the SurgePV onboarding team operate in English with India-friendly time-zone coverage.
Does SurgePV pair with a CRM for PM Surya Ghar paperwork?
Yes. SurgePV focuses on design, engineering, and proposals. For CRM, lead routing, follow-up automation, and end-to-end PM Surya Ghar subsidy paperwork including DISCOM application uploads, the natural pairing is QuickEstimate, a sister-brand solar CRM built specifically for Indian installer sales workflows. SurgePV plus QuickEstimate gives a 5-person team a complete design-to-signed-deal stack in two tools instead of the four or five most installers run today.