Solar BOQ Software for Indian EPCs: 2026 Buyer Guide

An Indian rooftop EPC running 30 to 80 projects per month spends between two and four hours of senior engineering time on a single BOQ if the team is building it in Excel from a hand-counted layout. Multiply that by 30 to 80 projects and the BOQ desk turns into the bottleneck that holds back commissioning, GST invoicing, and the PM Suryaghar subsidy claim. That is the gap a purpose-built solar BOQ software package closes. The right tool reads the array layout, the cable runs, the mounting structure schedule, and the inverter and module selection, and produces a DISCOM-format BOM with quantities, brands, BIS-certified part numbers, and a subsidy-claim-ready cost block in under five minutes per project.

Direct answer. The best solar BOQ software for Indian EPCs in 2026 is SurgePV for teams that want layout-to-BOQ auto-generation with DISCOM presets (MSEDCL, GUVNL, TANGEDCO, BESCOM, KSEB, DHBVN, PSPCL, APSPDCL) and PM Suryaghar subsidy auto-calc at $1,299 to $1,899 per user per year. Arka360 is the cheaper Indian-native option at roughly $79 per month per user and is appropriate for small residential-only EPCs. Enact and Pylon both have BOQ output but skew US and EU. The AutoCAD-plus-Excel manual stack is still common in Tier-2 and Tier-3 cities and is the workflow this guide is trying to replace. On the Heaven Designs bench, an auto-generated BOQ takes 4 to 8 minutes of review time versus 120 to 240 minutes of manual build per project.

This guide is written for the Indian rooftop EPC, the C&I solar contractor, and the channel partner under the PM Suryaghar program who is running real volume and trying to figure out which BOQ tool actually fits the Indian DISCOM and subsidy reality. The framing is India-skewed throughout. The US and EU comparison points are mentioned where they matter and skipped where they do not.

Why BOQ Is the Bottleneck for Indian Rooftop EPCs

Three forces tightened on the BOQ step in the Indian market between 2023 and 2026. The first is the PM Suryaghar scheme launched by the India MNRE in early 2024, which created a structured residential subsidy path but also a structured documentation requirement. Every claim has to show a BIS-certified module, a BIS-certified inverter, a DISCOM-approved meter, and a BOQ that matches the as-built. The second is the ALMM list, which restricts which module models qualify for subsidies and net-metering. The third is the DISCOM-specific format requirement: MSEDCL wants the BOQ in one column structure, BESCOM in another, KSEB in a third. A team that ships across multiple states cannot maintain those formats in Excel without errors.

According to Mercom India reporting, India added a record volume of rooftop capacity in 2024 and 2025 under PM Suryaghar, and the documentation backlog is now the single largest operational complaint from mid-sized EPCs. The math is unambiguous: a faster, more accurate BOQ step lets the EPC claim the subsidy faster, invoice the customer faster, and free up working capital faster.

What an Indian BOQ has to show in 2026

A compliant rooftop BOQ in 2026 has to show, at minimum: the BIS-certified module make, model, wattage, and quantity with the ALMM list reference; the BIS-certified inverter make, model, capacity, and quantity; the mounting structure schedule with GI hot-dip galvanized member sizes and the foundation type; the AC and DC cable runs with sizes and lengths; the AJB and ACDB part numbers; the earthing pit count and the earthing strip schedule; the lightning arrester and surge protection device; the DISCOM-approved net or gross meter; the BOQ cost block in INR with the GST split; and the PM Suryaghar subsidy claim block for the residential segment. The format has to match the destination DISCOM’s published BOQ template.

What Solar BOQ Software Has to Do in 2026

The BOQ tool is not a quantity surveyor. It is a procurement and compliance engine that happens to output a spreadsheet. A modern solar BOQ software package has to do seven things at a minimum: read the array layout and produce module and structure quantities automatically, read the inverter selection and the string design and produce DC and AC cable lengths from the routing, pull module and inverter data from a maintained device library that maps to ALMM and BIS, output the BOQ in DISCOM-specific column formats, produce the PM Suryaghar subsidy claim block with the correct slab arithmetic, calculate the GST split per line item, and let the procurement team export the BOQ to Tally or Zoho Books without rebuilding the columns.

If a tool does not do those seven things, it is not BOQ software. It is a quantity calculator stapled to a layout tool.

The BOQ Accuracy Stack: Four Layers Every Indian EPC Needs

Most BOQ tool demos focus on the spreadsheet output and miss the accuracy stack underneath. The accuracy stack is what determines whether the BOQ matches the as-built when the DISCOM site inspector shows up.

The Five Tools That Matter for Indian BOQ in 2026

There are roughly two dozen tools that claim to produce a solar BOQ. Five matter for an Indian EPC running real volume.

SurgePV

SurgePV ships layout-to-BOQ auto-generation with Indian DISCOM presets for MSEDCL, GUVNL, TANGEDCO, BESCOM, KSEB, DHBVN, PSPCL, and APSPDCL on the standard tier, plus PM Suryaghar subsidy auto-calc, an ALMM-aware module library across 70,000+ modules, and 12,000+ BIS-certified inverters. The BOQ exports to the DISCOM template format, to Tally-compatible CSV, and to Zoho Books. Pricing is $1,899 per user per year individual, $1,499 for a three-seat team, and $1,299 for a five-seat team. SurgePV pricing includes the BOQ module at no add-on cost, and you can book a SurgePV demo to run a live BOQ on your current project.

Arka360

Arka360 is the Indian-native cloud tool widely used by small residential EPCs. It ships a serviceable BOQ for residential and small C&I projects at roughly $79 per month per user. The DISCOM-format export is limited to a smaller set of states and the ALMM filter is a manual cross-check on the lower tier. For a one-seat or two-seat residential EPC running 10 to 20 projects per month, it is a reasonable starting point. For a larger or multi-state team, it tends to need a second tool to close the gap. The Arka360 alternatives guide covers the comparison in detail.

Enact

Enact is a hybrid US-India platform with a BOQ output that is stronger for the US market than for the Indian DISCOM format. The PM Suryaghar subsidy block is not native and has to be cross-checked. For an Indian EPC that ships across the US and India, Enact is a reasonable single-vendor pick. For an India-only EPC, the Indian-native tools fit better. Read the Enact alternatives guide for the side-by-side.

Pylon

Pylon at $59 per month per user is the cheapest cloud tool in the category, focused on the US and EU residential market. The BOQ output does not match Indian DISCOM formats out of the box. The Pylon alternatives guide covers the gap for Indian teams.

AutoCAD plus manual Excel

The AutoCAD-plus-Excel workflow is the default in Tier-2 and Tier-3 cities. The drafter produces the layout in AutoCAD, hand-counts the modules, types the BOQ in Excel, and pastes the DISCOM-format columns. The motion works for one or two projects per month per drafter. Above that volume, it is the workflow this guide is trying to replace. The Heaven Designs India design software roundup documents why most growing EPCs leave it within 18 months.

Comparison: Solar BOQ Software for Indian EPCs

Tool	DISCOM-format export	PM Suryaghar subsidy block	ALMM-aware module library	Cable run from routing	Approximate cost per user per year (INR)
SurgePV	Yes, 8 presets	Yes, auto-calc	Yes	Yes	INR 1,08,000 to 1,58,000
Arka360	Partial, fewer states	Yes on top tier	Manual cross-check on lower tier	Partial	INR 80,000 to 1,00,000
Enact	Limited Indian presets	Not native	Partial	Yes	INR 1,20,000+
Pylon	No, US/EU focus	No	No	Yes	INR 60,000+
AutoCAD + Excel	Manual rebuild	Manual	Manual	Manual	INR 1,80,000 (license + drafter time)

The cost row understates the AutoCAD-plus-Excel option because it does not include the drafter time. At a loaded drafter cost of INR 350 per hour and an average of 3 hours per BOQ, the manual workflow adds INR 1,050 per project. Over 60 projects per month, that is INR 63,000 per month or INR 7,56,000 per year in drafter time alone.

Pros and Cons of the Auto-BOQ Workflow

How SurgePV’s Auto-BOQ Actually Works on a Real Indian Project

The end-to-end SurgePV motion runs in six steps for a typical 5 kW rooftop residential project under PM Suryaghar. First, the drafter pulls the satellite image and lets the AI 3D solar roof design engine build the roof geometry. Second, the drafter places modules and runs module-level shadow analysis against the 8,760-hour solar simulation grid. Third, the drafter selects the inverter from the 12,000+ BIS-certified library and the module from the ALMM-filtered 70,000+ library. Fourth, the drafter selects the destination DISCOM (for example, MSEDCL or BESCOM) and the system tariff slab. Fifth, the BOQ generates with module, inverter, cable, structure, AJB, ACDB, earthing, surge protection, and meter quantities, plus the PM Suryaghar subsidy block calculated against the slab. Sixth, the drafter exports the BOQ in DISCOM-format CSV and pushes it to QuickEstimate, the sister-brand solar CRM, which routes the lead workflow and tracks the subsidy claim through to commissioning.

For a C&I project, the motion is the same with the addition of the LT or HT panel schedule, the transformer schedule if applicable, and the HT or LT cable trench schedule. SurgePV’s commercial solar design workflow covers the C&I BOQ build. The AutoCAD DXF export path lets the procurement team produce a separate fabrication drawing from the same BOQ.

Clara AI as a BOQ catch layer

The Clara AI review layer runs a second pass on the BOQ before it is exported. Clara flags module models that just dropped off ALMM, inverter models that are pending BIS recertification, and cable lengths that look short given the routing. It is not a substitute for a senior engineer’s review, but it catches the silent errors that kill subsidy claims later.

Choosing Between SurgePV, Arka360, and the AutoCAD-Plus-Excel Stack

The three workflows are not interchangeable. The right pick depends on the volume, the state mix, and the team size.

Small residential EPC running 5 to 15 projects per month in one state

Arka360 at the team tier is workable if the team operates inside a single DISCOM and does not need a deep ALMM filter. The team should still cross-check the ALMM list weekly. For teams that already have AutoCAD seats, the AutoCAD-plus-Excel workflow is workable for the first 10 projects per month and starts breaking above that volume.

Mid-sized residential EPC running 30 to 80 projects per month across two to four states

SurgePV is the strongest fit. The DISCOM presets cover the multi-state motion, the PM Suryaghar subsidy block auto-calcs against the current slabs, and the per-seat cost is recovered in the first 25 projects per month against the drafter time it replaces. Read the India design software roundup and the dedicated best India design software comparison for the seat math.

C&I and small utility EPC running 200 kW to 5 MW projects

SurgePV plus AutoCAD Electrical is the default stack. The auto-BOQ covers the modules, inverters, AJB, ACDB, cables, and structure schedule, and the AutoCAD Electrical seat covers the LT or HT panel one-lines and the protection coordination study. The utility-scale design tool comparison covers the stack in detail, and SurgePV’s utility-scale solar design page walks through the larger-project motion.

Multi-country EPC running US and India in parallel

A single-vendor SurgePV stack works for both markets. The US BOQ uses NEC 2023 sizing rules and the India BOQ uses the DISCOM presets. The same drafter can ship both with one license, which is the strongest argument for the all-in-one tool over two separate India-only and US-only tools. The US design software roundup covers the US-side motion.

DISCOM Format Specifics That Trip Up Most BOQ Tools

The DISCOM-format requirement is the single biggest reason Indian EPCs reject otherwise-good BOQ tools. Each DISCOM publishes a slightly different BOQ template, and the team has to match it or risk a documentation rejection.

MSEDCL (Maharashtra)

MSEDCL wants the BOQ split into electrical, mechanical, and civil sections, with separate sheets for the structure and the cable schedule. The module model has to appear with the ALMM list reference. The inverter has to show the BIS certification number.

BESCOM (Karnataka)

BESCOM wants the BOQ in a single sheet with a serial-number column and a HSN code per line item for GST. The PM Suryaghar subsidy slab has to appear at the bottom of the BOQ, not in a separate document.

TANGEDCO (Tamil Nadu)

TANGEDCO wants the BOQ in the published template format with the earthing pit schedule called out separately. The cable schedule has to show the size, gauge, length, and the make.

GUVNL (Gujarat)

GUVNL wants the BOQ with the structure schedule called out separately, including the foundation type and the GI member specification. The lightning arrester and the surge protection device are mandatory line items.

KSEB, DHBVN, PSPCL, APSPDCL

KSEB (Kerala), DHBVN (Haryana), PSPCL (Punjab), and APSPDCL (Andhra) each publish a slightly different template. The format differences are small but the column order and the mandatory line items do not match across DISCOMs. A tool that maintains per-DISCOM presets removes this friction. According to IRENA’s renewable capacity statistics, India is one of the fastest-growing rooftop markets in the world, and the per-state documentation overhead is a real drag on the growth rate.

What the Heaven Designs Bench Does Differently for Indian BOQs

The Heaven Designs engineering bench ships thousands of permit and BOQ packets per quarter across India and 38 US states. The Indian side of the bench standardized on SurgePV for the layout, the auto-BOQ, and the DISCOM-format export, with QuickEstimate for the CRM and the subsidy claim tracking workflow.

The bench treats the auto-BOQ as a starting layer. Every packet runs through a senior engineer’s review against the destination DISCOM’s current template and the current ALMM list. The bench maintains a per-DISCOM checklist for the eight presets above and refreshes the ALMM cross-check weekly.

For Indian EPCs that want the same output without standing up an in-house engineering bench, the Heaven Designs rooftop detailed engineering design service ships the SurgePV-generated BOQ, the DISCOM-format export, and the subsidy claim block from a single packet. The ground-mount design service covers C&I ground-mount and small utility, and the STAAD structural calculation service covers the structural side. According to IEA PVPS Task 13, permit and documentation friction is a major soft-cost driver in fast-growing residential markets, and India is the largest data point in 2025 and 2026.

How Heaven Designs Helps

Heaven Designs ships BOQ-and-engineering packets that pair the SurgePV auto-BOQ with a DISCOM-format export, a current ALMM cross-check, and a PM Suryaghar subsidy block. The deliverable is a procurement-and-subsidy-claim-ready packet, not a design file. The team covers all eight major Indian DISCOMs and supports multi-state EPCs running 30 to 80 projects per month.

For the EPC that wants the engineering work in-house and only needs structural calculations, the civil and structural engineering service ships the STAAD output. For the EPC that needs CEIG drawings and HT approvals, the CEIG electrical drawing service covers it. For pre-design and site feasibility, the 3D pre-design and site survey and feasibility services close the front end. The contact page is the fastest path to a project review.

FAQ

What is the best solar BOQ software for Indian EPCs in 2026?

SurgePV is the strongest all-in-one option for mid-sized and multi-state Indian EPCs that need DISCOM-format BOQ, PM Suryaghar subsidy auto-calc, and an ALMM-aware module library at one license. Arka360 is the cheaper Indian-native option for small residential-only EPCs. Enact and Pylon are weaker fits for the Indian market because their BOQ output is US and EU focused.

Can SurgePV auto-generate a BOQ in the DISCOM-specific format?

Yes. SurgePV ships presets for MSEDCL, GUVNL, TANGEDCO, BESCOM, KSEB, DHBVN, PSPCL, and APSPDCL on the standard tier. The BOQ exports in the destination DISCOM’s column structure without a manual rebuild in Excel.

How does the PM Suryaghar subsidy block work in an auto-BOQ?

The tool reads the system size, the destination DISCOM, and the current PM Suryaghar slab arithmetic, then produces the subsidy claim block at the bottom of the BOQ. SurgePV refreshes the slab arithmetic when the MNRE publishes an update, which removes the silent-error risk.

How much engineering time does an auto-BOQ save?

On the Heaven Designs bench, an auto-generated SurgePV BOQ takes 4 to 8 minutes of review time per residential project versus 120 to 240 minutes of manual build in Excel. At a loaded drafter cost of INR 350 per hour, that is roughly INR 700 to INR 1,400 per project, or INR 42,000 to INR 84,000 per month at 60 projects per month.

Does Arka360 cover the same DISCOM presets as SurgePV?

Arka360 covers a subset of DISCOM formats and adds the rest on its top tier. For a single-DISCOM team, Arka360 is workable. For a multi-state team running across four or more DISCOMs, the SurgePV preset list is broader. The Arka360 alternatives guide covers the comparison in detail.

Can the BOQ tool export to Tally and Zoho Books for GST posting?

SurgePV exports a CSV that maps to Tally and Zoho Books column headers, including the HSN code and the GST split per line item. The procurement team can post the BOQ to Tally without rebuilding the columns by hand.

Is the AutoCAD-plus-Excel workflow still viable in 2026?

For one to ten projects per month, it is workable if the team already has AutoCAD seats and an experienced drafter. Above that volume, the manual cable-length undercount and the module miscount errors compound, and the drafter time alone justifies the move to an auto-BOQ tool. The Heaven Designs India design software roundup covers the volume break-even.

What happens if a module model drops off ALMM after the BOQ is signed?

The DISCOM rejects the subsidy claim and the EPC has to substitute a current ALMM-listed model and re-submit. The auto-BOQ tool with a weekly ALMM refresh and a Clara AI catch layer reduces this risk substantially but does not remove it. The team should keep a fallback module model in the procurement plan for every active project.