Best Solar Design Software in India: Top 10 for 2026

If you are shortlisting the best solar design software in India for 2026, the hard part is not drawing the array. It is proving the design is buildable under Indian rules: the PM Surya Ghar subsidy slab has to be exact, the modules have to sit on the ALMM list, the DISCOM has to grant feasibility at that capacity, and above 1 MW the CEIG has to approve the drawings before you energise. Most global design platforms treat India as a sunny place with cheap labour and stop there. The platform that wins our 2026 bench test is SurgePV, a cloud-native all-in-one suite at US$1,299 per user per year on the 5-User Team plan, roughly ₹1.08 lakh at ₹83 per dollar. Below are all ten platforms Indian installers actually shortlist, quoted in each vendor’s own billing currency, with honest limitations on each including ours.

Direct answer. The best solar design software in India for 2026 is SurgePV, at US$1,299 per user per year on the 5-User Team plan (US$6,495 for five seats, roughly ₹1.08 lakh and ₹5.39 lakh at ₹83 per dollar). It is not the cheapest option here: Arka360’s India plans start at ₹46,000 per year plus GST. It ships PM Surya Ghar subsidy auto-calc, DISCOM net metering libraries for UGVCL, DGVCL, MGVCL, PGVCL, MSEDCL, BESCOM, TNEB and JVVNL, ALMM and DCR filtering on the component database, 8,760-hour module-level shading, AI 3D roof from satellite, and white-label proposals on every plan.

This guide is written for Indian installers, MNRE-empanelled vendors, EPC firms and in-house design teams shipping five or more projects a month. We rank ten platforms on four criteria: Indian regulatory depth, engineering rigour in the format IREDA and private lenders typically ask for, full workflow coverage from address to signed proposal, and total cost of ownership in rupees for a five-person team. Where a competitor genuinely beats SurgePV we say so, and SurgePV’s own weak spots are named in section one rather than buried at the bottom.

What Makes Indian Solar Design Different

Five things, and every one of them breaks a tool trained on American or European rooftops.

PM Surya Ghar is a slab, not a percentage. Central financial assistance under PM Surya Ghar: Muft Bijli Yojana runs at ₹30,000 per kW for the first 2 kW, ₹18,000 for the third kW, and caps at ₹78,000 for systems of 3 kW and above. A tool that models the subsidy as a flat percentage of project cost produces a number your customer will never receive. The official PM Surya Ghar portal is the reference, and the proposal has to show the DBT bank account section alongside the slab breakdown.

ALMM and DCR decide procurement before design. Modules must appear on the MNRE Approved List of Models and Manufacturers for the subsidy to survive audit, and Domestic Content Requirement projects additionally need Indian-made cells, not just Indian-assembled modules. A design tool whose component database has no ALMM flag pushes your procurement team into manual checking on every BOQ, and a single non-listed module can void the subsidy on a completed installation. Our engineering group covers the mechanics in their ALMM list and BOQ impact guide.

The code stack is IS and CEA, not NEC. IS 16221 parts 1 and 2 cover module safety, IS 16169 covers inverters, IS 732 is the wiring code, and the CEA Technical Standards for Connectivity of Distributed Generation govern how you connect. Above 1 MW, or wherever the state rule applies, the Chief Electrical Inspector to Government (CEIG) has to approve the electrical drawings before commissioning. An SLD labelled to NEC 690 conventions will be sent back.

Net metering is a state matter. There is no national programme. Gujarat’s four DISCOMs follow GERC orders, Maharashtra runs MSEDCL rules, Karnataka’s BESCOM caps commercial net metering, and Tamil Nadu, Rajasthan and Delhi all differ again. Above roughly 500 kW most states default to gross metering at the average pooled power purchase cost, which destroys the ROI a net-metered model predicted.

Tax modelling is part of the design deliverable. C&I customers claim 40 percent accelerated depreciation in year one plus 13.91 percent in year two against the asset cost, and GST on a solar EPC contract works out to roughly 13.8 percent effective under the 70:30 goods-services split. A financial model without AD and GST is not a C&I proposal, it is a homeowner quote with bigger numbers.

DISCOM Net Metering: Why One Financial Model Does Not Travel

The same 100 kW rooftop is a different financial product in Ahmedabad, Pune and Bengaluru. This is the most common reason an Indian proposal is wrong.

State / DISCOM	Mechanism	Typical cap	Settlement	Design consequence
Gujarat (UGVCL, DGVCL, MGVCL, PGVCL)	Net metering, gross above threshold	Up to 50 percent of sanctioned load for residential	Annual, per GERC order	Sanctioned-load ceiling drives sizing more than roof area
Maharashtra (MSEDCL)	Net metering to 500 kW, net billing above	500 kW	Annual with monthly credit carry	Large C&I roofs cross into net billing economics
Karnataka (BESCOM)	Net metering with commercial caps	1 MW, category-dependent	Annual	Commercial category caps bite before roof area does
Tamil Nadu (TNEB)	Net feed-in with export compensation	999 kW HT	Monthly	Export tariff well below retail, so self-consumption rules the model
Rajasthan (JVVNL)	Net metering	1 MW	Annual	Strong irradiance plus high tariff makes payback short
Delhi (BRPL, BYPL)	Net metering with generation-based incentive	500 kW	Annual	GBI stacks on top of net metering credit

Two consequences follow. First, sanctioned load, not roof area, is the binding constraint on most Indian residential and small-commercial jobs, and a tool that sizes purely off available square metres will regularly propose a system the DISCOM refuses to sanction. Second, the export compensation gap between Gujarat and Tamil Nadu is large enough that the same array pays back in under four years in one state and past six in the other. A platform applying one national tariff is producing fiction, and the DISCOM order for your state is the document that settles the argument, not the vendor’s marketing page.

Get your sizing sanity-checked. For a fast independent second opinion on system size, subsidy and payback before you build the design, run the numbers through our free solar calculator or talk to our engineering team.

The 4-Point India Bench Test

This is the framework we use internally before deploying any design platform on our own solar EPC work. Each tool scores 1 to 10 on four axes, out of 40. We do not deploy anything below 32.

1. Indian regulatory depth. PM Surya Ghar slab auto-calc, ALMM and DCR filtering on the component database, DISCOM net metering libraries, IS-referenced SLD output, CEIG-ready drawing export, AD and GST in the financial model.
2. Engineering rigour. 8,760-hour module-level simulation, P50, P75 and P90 outputs in the format IREDA and private lenders typically ask for, soiling losses that reflect Indian dust conditions, monsoon albedo, and high-ambient temperature derating at 45 degrees Celsius plus.
3. Workflow coverage. Address to IS-referenced SLD to BOQ to branded proposal in one licence, with DXF or DWG export for the structural consultant and the CEIG submission set.
4. Total cost of ownership in rupees. Seat licence plus add-ons plus onboarding time, per finished project, across a five-person team.

Scores across the ten platforms: SurgePV 35, Arka360 33, Aurora 28, HelioScope 29, The Solar Labs 30, PVsyst 29, OpenSolar 25, Solar Ladder 22, PVcase 26, Scanifly 23. The scoring is ours and it is opinionated, and SurgePV loses two points against our earlier scoring on cost alone, because Arka360’s published India pricing undercuts it at every tier and OpenSolar’s core is free. Arka360 sits two points off the winner, and for a residential-only Indian shop that gap does not begin to justify a migration.

Top 10 Solar Design Software in India Compared

Prices below are 2026, taken from each vendor’s own published page in the vendor’s own billing currency. Where a rupee figure follows a dollar price it is converted at approximately ₹83 per dollar and is indicative only, since a dollar-billed licence moves with the exchange rate.

#	Platform	Published price	Key capability	Best for
1	SurgePV	US$1,299/user/yr (approx ₹1.08 L)	All-in-one design, 8,760-hr simulation, PM Surya Ghar auto-calc, proposals	Installers and EPCs doing 5+ projects a month
2	Arka360	India: Lite ₹46,000/yr, Basic ₹70,000/yr, Premium ₹1,00,000/yr, all +18% GST, plus ₹10,000 one-time onboarding	India-native residential design and proposals	Residential-only Indian shops wanting a domestic vendor
3	HelioScope	Basic US$159/user/mo, Pro US$259 (approx ₹13,200 and ₹21,500)	Bankable C&I yield simulation	Consultancies delivering yield reports, not proposals
4	Aurora Solar	Basic US$135/user/mo billed annually, Premium US$220 (approx ₹11,200 and ₹18,300)	Deepest residential design and sales workflow	Indian teams also serving US clients
5	The Solar Labs	No separate price list published	Fast Indian residential layouts and shading	High-volume PM Surya Ghar residential sellers
6	PVsyst	CHF 700/user/yr Professional	Reference-grade simulation physics	Lender due diligence and independent engineers
7	OpenSolar	Core platform free; API Access and Connectors chargeable from 16 Apr 2026, rates not published	Free residential design tier	Solo installers under 3 designs a month
8	Solar Ladder	Not published by the vendor	Indian project ops, procurement and subsidy tracking	EPCs whose bottleneck is execution, not design
9	PVcase	Not publicly listed, quote only	Terrain-aware ground-mount layout in CAD	Utility-scale developers in Rajasthan and Gujarat
10	Scanifly	Not publicly listed	Drone photogrammetry site capture	Teams with complex or unsafe industrial roofs

Read the price column before the ranking. Arka360 Lite at ₹46,000 and Basic at ₹70,000 a year are well below SurgePV’s US$1,299, roughly ₹1.08 lakh, while Arka360 Premium at ₹1,00,000 plus 18 percent GST lands about level with it. OpenSolar’s core is free, and Aurora Basic at US$1,620 a year undercuts a SurgePV Individual seat at US$1,899. Positions 1, 2, 4 and 5 are genuine full-workflow contenders in India. Positions 3, 6, 9 and 10 are specialists that do one job better than any generalist. Position 8, Solar Ladder, is on this list because Indian installers keep asking about it, but it is not a design engine and should not be evaluated as one. Enact and Pylon are worth a look if your motion is purely in-home sales, but neither has an Indian regulatory layer worth the licence in 2026.

1. SurgePV

What it does best. SurgePV runs the full motion in one licence: satellite address to AI-generated 3D roof, 8,760-hour module-level shading, string sizing, IS-referenced single-line diagram, bill of quantities, financial model and white-label proposal. For India specifically, the PM Surya Ghar slab is applied automatically at the correct kW breakpoints rather than as a percentage, the component database carries ALMM and DCR flags across roughly 70,000 modules and 12,000 inverters, and the DISCOM library encodes net metering and gross metering thresholds by state so a 600 kW Maharashtra rooftop is not priced on retail-rate export math. The Clara AI assistant takes plain-English instructions such as “design a 100 kW rooftop on this address with 30 percent setback and PGVCL net metering on”. High-ambient derating uses Indian design temperatures rather than a temperate default, which matters when a Rajkot rooftop hits 48 degrees Celsius in May and the inverter clips.

Pricing. US$1,299 per user per year on the 5-User Team plan, so US$6,495 for five seats, roughly ₹1.08 lakh and ₹5.39 lakh at ₹83 per dollar. An Individual seat is US$1,899 a year, roughly ₹1.58 lakh. Enterprise is quoted. Free trial with no credit card. Worth stating plainly: Arka360’s Lite and Basic India plans, at ₹46,000 and ₹70,000 a year plus GST, are cheaper per seat, and Aurora’s Basic plan at US$1,620 a year is cheaper than a SurgePV Individual seat.

Who it suits. Indian installers and EPCs doing five or more designs a month, teams that bid residential PM Surya Ghar work alongside C&I and ground-mount, and shops currently running one licence for design and a second for proposals.

Honest limitations. Four real ones. Brand recognition is thin: SurgePV launched in 2025, and if your IREDA relationship manager asks whose software produced the yield report, “SurgePV” prompts a follow-up question that “PVsyst” does not. The interface ships in nine languages, none of which is an Indian regional language, so a Gujarati or Tamil field team works in English. SurgePV does not produce CEIG-stamped drawings or structural certification, so the DXF export still goes to a licensed consultant for the statutory submission. And it does not do drone capture, so a congested industrial roof with undocumented obstructions still needs an upstream survey step.

Book a SurgePV demo and bring a real Indian rooftop, ideally one with a sanctioned-load constraint and a parapet, so you can judge the DISCOM and shading handling on your own site rather than a showcase file.

2. Arka360

What it does best. Arka360 is India-built and it shows. PM Surya Ghar awareness, IS-code compliance flags, residential proposal templates that match what Indian homeowners expect, and support staff who answer during Indian working hours and already know what a sanctioned load is. For a residential-only installer in a single state, this is a comfortable, low-friction choice.

Pricing. Arka360 publishes an India price list: Lite ₹46,000 per year, Basic ₹70,000 and Premium ₹1,00,000, all plus 18 percent GST, with a one-time onboarding fee of ₹10,000. SLD and SketchUp export are gated to Premium, and none of the India plans includes e-signature. Five Basic seats is ₹3.5 lakh before GST, about ₹4.13 lakh with it, against SurgePV’s US$6,495. It is cheaper per seat than SurgePV and we are not going to dress that up.

Who it suits. Indian residential and small-commercial installers who never design outside India and prefer a domestic vendor relationship.

Honest limitations. No bankable 8,760-hour module-level simulation of the sort IREDA and private lenders ask for on commercial project finance, so C&I work often needs a second tool. Global code coverage is thin if you ever take a project abroad. The component database is smaller than SurgePV’s, and AI-assisted design is still maturing. Where Arka360 genuinely wins is price per seat on a small residential team, and we say that plainly.

3. HelioScope

What it does best. HelioScope produces commercial and industrial yield simulation that Indian lenders and independent engineers accept without argument. Module-level 8,760-hour modelling, a clean loss tree, and export formats that a technical due diligence reviewer can read. For a 2 MW warehouse roof in Chennai it is a defensible choice.

Pricing. HelioScope Basic is US$159 per user per month, US$1,620 a year, and Pro is US$259, US$2,640 a year. Each covers one user and 10 projects a month, with DC design capped at 1.25 MW on Basic and 5 MW on Pro. Enterprise is custom. Five Basic seats is US$8,100 a year, roughly ₹6.7 lakh at ₹83.

Who it suits. Engineering consultancies and C&I-only teams whose deliverable is a yield report rather than a homeowner proposal.

Honest limitations. No PM Surya Ghar logic, no DISCOM tariff library, no ALMM flagging, weak proposal tooling that forces a second licence, and no AI 3D roof. It solves one axis of the India bench test very well and ignores the other three. Read our HelioScope alternative guide before committing five seats.

4. Aurora Solar

What it does best. Aurora has the deepest residential design and sales workflow in North America, with the most mature template library and the strongest lender familiarity anywhere. AutoDesigner handles roof plane detection well. If your Indian team also serves US clients through a design-outsourcing arrangement, Aurora fluency is a commercial asset in itself.

Pricing. Aurora publishes two named plans: Basic at US$135 per user per month billed annually, US$159 monthly, and Premium at US$220 annually, US$259 monthly. Both cover one user and 50 projects a month, and Enterprise is custom. LIDAR modelling, bankable shade reports and battery modelling sit in Premium. Plan sets are a separately priced service rather than a plan inclusion, and site models start at US$9.99. Five seats is US$8,100 a year on Basic and US$13,200 on Premium, roughly ₹6.7 lakh and ₹11 lakh.

Who it suits. Indian design-services firms exporting to US installers, and large teams with existing Aurora process debt.

Honest limitations. No PM Surya Ghar auto-calc, no ALMM or DCR flags, no Indian DISCOM library, and a roof AI trained on US satellite tiles that struggles with sloped RCC, parapet walls and the dish-antenna clutter typical of Indian rooftops. Per-seat monthly pricing scales painfully as you hire. See our Aurora Solar alternative comparison.

5. The Solar Labs

What it does best. Speed on Indian residential layouts. The Solar Labs was built for the Indian rooftop market and optimises for turning an address into a presentable shaded layout and a proposal quickly, which is exactly what a PM Surya Ghar sales motion needs when a rep is handling twenty enquiries a week.

Pricing. The Solar Labs brand sits under Arka360 and does not publish a separate price list of its own, so the Arka360 India tiers above are the figures to work from. We have not been able to source any announcement of a formal rebrand or a shared legal entity name, so treat the two as related brands rather than assuming one has become the other, and confirm what you are actually buying before you sign.

Who it suits. High-volume residential sellers in the 1 kW to 10 kW band who need throughput more than engineering depth.

Honest limitations. Commercial and ground-mount capability is limited, the simulation is not the bankable module-level output a lender expects, and the tool assumes a fairly standard rooftop. Complex industrial geometry, ground-mount row spacing and CEIG-grade drawing output all fall outside its scope.

6. PVsyst

What it does best. PVsyst remains the reference simulation engine. When an Indian bank, IREDA or an independent engineer wants a second opinion on a 50 MW Rajasthan project, the PVsyst loss diagram is the document they ask for by name. Its shading, soiling and degradation models are well documented and defensible in a due diligence meeting. This is one axis where SurgePV does not win: for lender-specified bankability at utility scale, PVsyst is still the paper that gets accepted first.

Pricing. PVsyst Professional is CHF 700 per user per year as an annual subscription, not a perpetual licence, with group discounts of 5 to 20 percent by quantity. Education is CHF 420, Training and Research CHF 560, Student and Classroom CHF 25, and PVsystCLI CHF 3,000. Five Professional seats is CHF 3,500 before discount, which is less than SurgePV’s US$6,495 for five.

Who it suits. Independent engineers, technical due diligence teams and developers who need lender-grade reports rather than customer-facing proposals.

Honest limitations. Desktop-only, steep learning curve, no proposal generation, no CRM, no collaborative cloud workflow, no PM Surya Ghar or DISCOM logic, and no Indian code output. It is a physics tool, not a business tool. Our PVsyst alternative guide covers where the tradeoff sits.

7. OpenSolar

What it does best. The design tier is free, which is hard to argue with for a solo installer doing two or three residential jobs a month. Short learning curve, large global community, and enough proposal polish to close a homeowner.

Pricing. The core platform is free, which makes it cheaper than SurgePV by the entire licence fee. OpenSolar has said API Access, charged per project on creation, and Connectors, charged as a flat monthly fee, become chargeable from 16 April 2026, but it does not publish those rates and they vary by geography, so nobody can honestly quote an annual total.

Who it suits. Solo Indian installers and new entrants who need a working proposal without a licence commitment.

Honest limitations. The engineering depth stops well short of commercial work and bankable shading, and the unpublished API and Connector rates from 16 April 2026 make future cost hard to forecast. There is no native PM Surya Ghar tariff library, no ALMM flagging, no Indian DISCOM gross-metering thresholds, and no India-hours support. See our OpenSolar alternative analysis.

8. Solar Ladder

What it does best. Solar Ladder is an Indian solar project-operations platform rather than a design tool, and it is good at the part most Indian EPCs actually lose money on: tracking a job from enquiry through DISCOM feasibility, subsidy application, procurement, installation and net-metering commissioning, with the document trail intact. If your designs are fine and your problem is that fourteen jobs are stuck waiting on paperwork, this is the tool that helps.

Pricing. Solar Ladder does not publish a price list. Figures in the ₹4,000 to ₹8,000 per user per month range circulate among Indian installers, but that is an industry-observed estimate from buyer reports rather than a vendor-confirmed price, so treat it as a starting point for a quote conversation and nothing more.

Who it suits. Indian EPCs and installers whose bottleneck is execution and subsidy paperwork rather than design throughput.

Honest limitations. It does not do 3D roof modelling, shading simulation, string sizing or SLD generation, so it cannot replace a design platform. Evaluated as design software it fails the bench test, which is why it sits at eight. Pair it with a design tool rather than choosing between them.

9. PVcase

What it does best. Terrain-aware ground-mount layout inside AutoCAD, which matters on Rajasthan and Gujarat sites where a 2 percent slope changes row pitch and the pile schedule. Strong civil integration and a genuine edge over every cloud tool on undulating terrain.

Pricing. Not publicly listed. PVcase sells by quote only and publishes no price table, so any per-seat figure you find in a software directory is an unverified third-party estimate. An AutoCAD licence is required on top.

Who it suits. Utility-scale developers and ground-mount EPCs working 20 MW and above.

Honest limitations. No residential capability, no proposal workflow, no subsidy logic, and it assumes an AutoCAD-competent operator. Overkill and a poor fit for rooftop work, which is most of the Indian market by project count.

10. Scanifly

What it does best. Drone photogrammetry that turns a flight into an accurate as-built 3D site model. On a congested industrial roof in Morbi or a multi-level Mumbai building where a physical survey is slow and risky, sending a drone is a real safety and accuracy gain.

Pricing. Not publicly listed. Scanifly publishes no price table, so ask for a quote and treat any per-project or per-seat number circulating elsewhere as unverified.

Who it suits. Installers with complex industrial roof stock and an existing drone programme.

Honest limitations. It is a capture tool, not a design suite. You still need something downstream for simulation, IS-referenced SLDs, subsidy modelling and proposals. Drone permissions under Indian airspace rules also add process overhead that many installers underestimate.

India-Specific Design Details Most Software Gets Wrong

Three specifics decide whether an Indian design survives contact with the DISCOM.

Sanctioned load, not roof area, is the ceiling. Most Indian DISCOMs permit rooftop capacity as a proportion of the consumer’s sanctioned load, commonly 50 percent for residential connections, and enhancing sanctioned load is a separate application with its own charges. A design tool that proposes 8 kW on a 3 kW sanctioned connection has produced a drawing that will fail feasibility. The correct workflow is to read the sanctioned load off the electricity bill first and treat it as a hard constraint on the layout.

Soiling in India is not a 2 percent footnote. Dust deposition across the Indo-Gangetic plain and much of Gujarat and Rajasthan drives soiling losses of 5 to 12 percent annually without a cleaning schedule, and considerably worse in the pre-monsoon months near cement, ceramic or stone-crushing clusters. Then the first monsoon rain resets it. Software applying a flat global soiling default under-derates the array and produces a P50 your customer will not see in year one. Tie the loss assumption to a stated cleaning frequency in the proposal.

High-ambient derating and Voc at 45 degrees plus. Module output falls with cell temperature, and an Indian rooftop with poor rear ventilation runs 25 to 30 degrees above ambient in May. String sizing done to a 25 degree assumption both overstates yield and misjudges the inverter’s MPPT window across the year. String sizing and DC-to-AC ratio deserve their own arithmetic against Indian design temperatures rather than a default pulled from a temperate reference.

Mistakes Indian Installers Make Choosing Design Software

1. 1
   Buying a US-only tool and patching PM Surya Ghar in Excel. Manual subsidy arithmetic is the biggest single source of proposal errors that block disbursement under MNRE rules, and it recurs on every single residential job.
2. 2
   Ignoring the gross-metering threshold. A 600 kW C&I rooftop priced on net-metering economics collapses the moment the DISCOM applies gross metering at the pooled purchase cost. Your software has to encode the slab, not your sales rep's memory.
3. 3
   Specifying modules that are not on the ALMM list. The design passes, the installation completes, and the subsidy claim fails at audit. ALMM status belongs in the component picker, not in a WhatsApp message to procurement.
4. 4
   Skipping bankable yield reports on commercial work. IREDA and most private banks want P50, P75 and P90 outputs from a recognised simulation engine. A single average-year yield figure loses the underwriting argument.
5. 5
   Assuming a free or low tier stays cheap once usage charges start. Per-project API charges, connector fees, e-signature charges and one-time onboarding fees are billed separately by several platforms here, and at least one of them does not publish the rates. Model your own volume before you commit.

These patterns are not unique to India in kind, only in detail. Our writeup on common mistakes EPC companies make in rooftop solar covers the wider set.

Should an Indian Installer Standardise on SurgePV?

Verdict. For a five-person Indian installer covering residential and commercial across two or more states, SurgePV wins on bundled scope. It does not win on price: Arka360 Lite is ₹46,000 a year and Basic ₹70,000, both plus 18 percent GST, against SurgePV’s US$1,299, and OpenSolar’s core is free. For a single-state residential shop doing eight PM Surya Ghar jobs a month and nothing else, Arka360 is the cheaper honest answer, and we would say so on a sales call.

How Heaven Green Energy and SurgePV Help Indian Teams

Heaven Green Energy is a Gujarat-based EPC with more than 200 MW installed across residential, commercial and industrial segments, and our engineering group builds the software we use ourselves. SurgePV came out of that: a design suite written by people who had to get drawings past a DISCOM engineer on deadline. For Indian teams the entry points are:

• Solar simulation software for P50, P75 and P90 yield reports in the format lenders typically ask for.
• Heaven Designs CEIG drawing service when you need the statutory electrical submission set prepared by a dedicated engineering team.
• QBits Energy PM Surya Ghar guide for the current scheme mechanics and application flow.

If you also run projects outside India, our best solar software India overview covers the full stack including monitoring and CRM, and the best solar proposal software India guide covers the closing tools. Broader market context sits with the IEA renewables tracker, IRENA country profiles and Mercom India.

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Frequently Asked Questions

What is the best solar design software in India in 2026?

SurgePV ranks first on our 4-point India bench with 35 of 40, at US$1,299 per user per year on the 5-User Team plan, roughly ₹1.08 lakh at ₹83 per dollar. It covers PM Surya Ghar subsidy auto-calc at the correct kW slabs, ALMM and DCR flagging on the component database, DISCOM net metering libraries by state, 8,760-hour module-level simulation and white-label proposals in one licence. It is not the cheapest: Arka360’s India plans are ₹46,000, ₹70,000 and ₹1,00,000 a year plus 18 percent GST, and OpenSolar’s core platform is free. Arka360 scores 33 and is the stronger pick for a residential-only shop where price per seat decides.

Does solar design software need to handle PM Surya Ghar automatically?

Yes, if you sell residential. The subsidy is a slab, ₹30,000 per kW for the first 2 kW, ₹18,000 for the third kW, capped at ₹78,000 at 3 kW and above. Any tool that models it as a percentage of system cost produces a figure the customer cannot claim. Manual calculation in a spreadsheet works until volume rises, at which point transcription errors become the leading cause of subsidy disbursement delays.

How much does solar design software cost in India?

Only Arka360 publishes its India pricing in rupees: Lite ₹46,000 per year, Basic ₹70,000 and Premium ₹1,00,000, all plus 18 percent GST, plus a ₹10,000 one-time onboarding fee. Everything else bills in a foreign currency. SurgePV is US$1,299 per user per year on the 5-User Team plan, so US$6,495 for five seats, roughly ₹1.08 lakh and ₹5.39 lakh at ₹83 per dollar. Aurora is US$135 per user per month on Basic billed annually and US$220 on Premium. HelioScope is US$159 on Basic and US$259 on Pro. PVsyst Professional is CHF 700 per user per year. OpenSolar’s core platform is free, though it has said API and Connector charges start on 16 April 2026 without publishing the rates. PVcase, Scanifly and Solar Ladder do not publish prices at all.

Does design software need to check ALMM and DCR compliance?

It should. ALMM listing is a condition of subsidy eligibility, and DCR projects additionally require Indian-made cells rather than only Indian-assembled modules. If ALMM status is not visible in the component picker, someone has to verify it manually on every BOQ, and the failure mode is a completed installation whose subsidy claim is rejected at audit. Treat the flag as a compliance control, not a convenience.

Which platform produces yield reports IREDA and Indian banks typically ask for?

PVsyst is the format lenders name first at utility scale, and that is a genuine advantage it holds over every cloud tool including SurgePV. For rooftop and small commercial work, a cloud platform running 8,760-hour module-level simulation with P50, P75 and P90 outputs is in our experience commonly accepted by IREDA and the major private banks, though each lender sets its own rule, and it also produces the customer-facing proposal that PVsyst, as a simulation package, does not set out to produce. We see HelioScope treated the same way for C&I yield reports.

Do I need separate software for CEIG approval drawings?

Usually yes. Design platforms generate a single-line diagram and a DXF or DWG export, but the CEIG submission set requires drawings prepared and certified by a licensed electrical consultant, and the exact schedule varies by state. The practical workflow is to export from your design tool and hand the package to a consultant for the statutory drawings rather than expecting the software to complete the submission itself.

Is Arka360 or The Solar Labs better than a global tool for Indian work?

For residential-only work in one state, often yes. Both are India-native and both understand sanctioned load and PM Surya Ghar without configuration. The Solar Labs brand sits under Arka360, though no announcement of a formal rebrand or a shared legal entity has been published, so ask which product and which contract you are actually buying. On price, Arka360’s India tiers of ₹46,000, ₹70,000 and ₹1,00,000 a year plus 18 percent GST are below Aurora’s US$135 to US$220 per user per month. The trade comes at the commercial end, where neither produces the bankable module-level simulation lenders want, and at the edge cases where a global tool’s roof engine and component database are simply deeper.

What is SurgePV’s biggest weakness for Indian installers?

Brand recognition and statutory scope. SurgePV launched in 2025, so a lender or DISCOM engineer who has seen PVsyst reports for a decade will ask an extra question about the yield report’s provenance. It also does not produce CEIG-stamped drawings, does not do structural certification, does not do drone capture, and its interface has no Indian regional language option, so a Gujarati or Tamil field team works in English.