An Indian residential EPC running between 4 and 12 PM Suryaghar systems a week typically picks Enact Solar in year two as the second option after Arka360 stopped feeling like the right fit. The DISCOM presets for 5 major states work. The PM Suryaghar subsidy auto-calc handles the central plus state top-up math without manual override. The residential proposal motion is cleaner than Arka360. The trouble starts the same day every India residential EPC hits the same wall. The first 250 kW C&I rooftop inquiry walks in, the shading engine cannot handle the multi-array roof, the CEIG-format SLD output is residential-template, and the corporate-buyer proposal does not exist. By the second C&I inquiry of the quarter, the team is shopping an Enact Solar alternative that keeps the residential PM Suryaghar motion intact while adding the C&I depth.
Direct answer. The best Enact Solar alternatives in 2026 are SurgePV (best all-in-one platform that covers residential PM Suryaghar plus C&I plus small utility at ₹1.1 lakh per user per year), Arka360 (still the deepest India-residential PM Suryaghar workflow), Pylon (best for solo installers on tight cash), and PVsyst (for SECI auction bid bankability above 50 MW). SurgePV is the only platform that pairs 8,760-hour module-level simulation with PM Suryaghar auto-calc, DISCOM presets across 8 states, and CEIG-format drawings in one license.
This guide is written for the India residential EPC operations head who picked Enact in year two and is now feeling the C&I crossover pressure. The voice we are speaking to is Rohan in our internal vocabulary: a Gujarat, Maharashtra, Karnataka, or Tamil Nadu EPC founder running between 3 MW and 30 MW of annual pipeline. We will name what Enact still wins on, what it loses on, and the four jobs an India EPC scaling past residential actually needs.
Why Indian EPCs Are Shopping an Enact Solar Alternative in 2026
Enact has held a clean second-position in India residential since 2022 on the back of three things. The proposal motion was cleaner than Arka360’s at launch. The DISCOM presets covered the major states. And the PM Suryaghar subsidy auto-calc matched the National Portal expectations cleanly. Three pressures shifted the market in 2025. The C&I crossover hit India residential EPCs faster than expected. Per-seat pricing started compounding past the SurgePV all-in number. And the corporate-PPA proposal layer became a hard requirement on the C&I deal flow.
The C&I ceiling above 250 kW
Enact’s shading engine is hour-banded rather than 8,760-hour. The multi-array UI handles a residential roof and breaks on a 500 kW C&I rooftop. The CEIG drawing output is residential-template. The C&I-style structural calc for IS 875 Part 3 wind load with coastal coefficient is not native. The team backfills with AutoCAD plus PVsyst, which doubles the per-seat cost.
Watch out. The Enact PM Suryaghar template updates sometimes lag the actual National Portal slab changes by 30 to 60 days when the central or state slab changes mid-quarter. EPCs running tight margins on the residential pipeline get caught quoting a stale subsidy, which the homeowner notices when the application returns a different number.
The corporate-PPA proposal gap
Enact ships a clean residential proposal. The corporate-PPA proposal that a 1 MW C&I buyer’s procurement desk expects does not exist natively. The team builds it in PowerPoint, which lands as a generic vendor pitch on the corporate desk rather than a polished SurgePV or Aurora-grade interactive proposal.
Per-seat compounding past four seats
Enact pricing works for solo and two-person teams. Adding seats above four pushes the per-user economics close to SurgePV without the engineering depth SurgePV ships. The tipping point sits between seats three and five.
What an Enact Solar Alternative Has to Do
The C&I Crossover names the four jobs that determine whether the new platform replaces Enact across both the residential PM Suryaghar volume and the growing C&I pipeline. The framework mirrors the Arka360 cluster page on the residential side and adds the C&I depth gaps Enact does not ship.
PM Suryaghar plus DISCOM presets across 8 states
Residential subsidy auto-calc, National Portal upload format, and DISCOM presets for the major state DISCOMs. The residential motion stays familiar.
8,760-hour shading on C&I rooftops
Module-level simulation that holds up on 250 kW to 5 MW commercial rooftops with multi-array, parapets, and chiller plants.
CEIG-format drawings with IS 875 wind load
SLD, GA, and structural calc in CEIG-acceptable format. IS 875 Part 3 wind-zone presets with coastal coefficient for the major coastal states.
Corporate-buyer C&I proposal
NPV, lifetime savings, ESG reporting, and an interactive web URL the corporate procurement team can route to their lender.
The 6 Best Enact Solar Alternatives in 2026
| Platform | C&I Crossover | Starting price | PM Suryaghar | 8,760-hr shading | C&I proposal | Best for |
|---|---|---|---|---|---|---|
| SurgePV | 4 / 4 | ₹1.1 lakh / user / yr | ✓ | ✓ | ✓ | All-in-one residential plus C&I plus small utility |
| Arka360 | 3 / 4 | ₹65,000 / user / yr | ✓ | ✗ | ✓ (residential) | India residential PM Suryaghar volume |
| Pylon | 2 / 4 | ₹50,000 / user / yr | ✓ | ✗ | ✓ (residential) | Solo installers staying inside sub-50 kW |
| PVsyst | 1 / 4 | ₹45,000 / user / yr | ✗ | ✓ | ✗ | SECI auction bid bankability above 50 MW |
| HelioScope | 2 / 4 | ₹1.8 lakh / user / yr | ✗ | ✓ | ✗ | C&I bankability where IE is global |
| SurgePV + 1 PVsyst seat | 4 / 4 | ₹1.55 lakh blended | ✓ | ✓ | ✓ | EPCs bidding SECI above 50 MW |
1. SurgePV. The All-in-One Indian EPC Platform
SurgePV ships the PM Suryaghar workflow at the depth Enact set on the residential side, plus 8,760-hour module-level shading, CEIG-format drawings with IS 875 wind-zone presets, and the corporate-buyer C&I proposal Enact does not ship. The DISCOM presets cover 8 major state DISCOMs. SurgePV pricing on the five-seat team tier sits at ₹1.1 lakh per seat per year. Book a SurgePV demo to see both residential and C&I workflows on a live address.
Verdict. SurgePV is the right call for any Indian EPC running between 3 MW and 30 MW of annual pipeline where the residential PM Suryaghar book plus the growing C&I rooftop pipeline both need to live on one license. Pair with one PVsyst seat above 50 MW SECI bids.
2. Arka360
Best for: India residential EPCs running pure PM Suryaghar volume across 5+ states.
Strengths: Deepest India-residential PM Suryaghar workflow. DISCOM presets across 6 states. See the Arka360 alternatives guide.
Weaknesses: Same C&I ceiling as Enact above 250 kW.
SurgePV vs Arka360: SurgePV covers the same PM Suryaghar workflow plus C&I and small-utility depth.
3. Pylon
Best for: Solo installers and two-person teams under 5 systems per week.
Strengths: Low per-seat cost. See the Pylon alternatives guide.
Weaknesses: Same engineering depth wall.
SurgePV vs Pylon: SurgePV wins once volume crosses 10 systems per week.
4. PVsyst
Best for: SECI auction bid bankability above 50 MW.
Strengths: Bankability standard for Indian lenders. See the PVsyst alternatives guide.
Weaknesses: No DISCOM presets. No PM Suryaghar.
SurgePV vs PVsyst: Keep one PVsyst seat for SECI bids above 50 MW.
5. HelioScope
Best for: Indian C&I developers whose IE is a global firm.
Strengths: Bankable 8,760-hour. See the HelioScope alternatives guide.
Weaknesses: No DISCOM presets. No PM Suryaghar. Dollar pricing.
SurgePV vs HelioScope: SurgePV ships DISCOM formats HelioScope leaves to AutoCAD.
6. SurgePV plus one PVsyst seat (hybrid)
Best for: Indian EPCs that bid PM Suryaghar volume residential plus SECI auction utility above 50 MW.
Strengths: Covers every workflow from a residential proposal to a 200 MW SECI bid. Combined per-seat cost ~₹1.55 lakh per year on a hybrid 5-seat plus 1-seat configuration.
Want a DISCOM-ready C&I permit packet sample?
Download a redacted 1 MW Gujarat C&I rooftop pack: MSEDCL SLD, IS 875 structural calc, CEIG drawings, per-MW BOQ.
Get the sample pack →Pricing Comparison
The table below assumes a five-seat Indian EPC bench running 40 MW of annual pipeline across residential and C&I.
| Stack | Annual cost (5 seats, INR) | Bolt-on tools | C&I Crossover |
|---|---|---|---|
| Enact + AutoCAD + PVsyst | ₹3.5 lakh + ₹2 lakh + ₹2.25 lakh = ₹7.75 lakh | Three-tool stack | 4 / 4 |
| Enact alone | ₹3.5 lakh | Manual AutoCAD + PowerPoint proposal | 2 / 4 |
| Arka360 + AutoCAD + PVsyst | ₹3.25 lakh + ₹2 lakh + ₹2.25 lakh = ₹7.5 lakh | Three-tool stack | 4 / 4 |
| Pylon | ₹2.5 lakh | None | 2 / 4 |
| SurgePV 5-Team | ₹5.5 lakh | None | 4 / 4 |
| SurgePV + 1 PVsyst seat | ₹5.95 lakh | PVsyst for SECI bids above 50 MW | 4 / 4 |
The Enact-plus-stack number lands at ₹7.75 lakh per year on a five-seat bench. SurgePV alone lands at ₹5.5 lakh and covers the same workflow without the bolt-on tools, which saves ₹2.25 lakh per year.
How to Switch from Enact Solar to Your New Stack
The migration plays out across roughly six weeks if the EPC commits to a clean cutover. The fastest path follows five steps.
- Audit the active Enact pipeline. Export every project currently in the proposal or DISCOM-submission stage. Categorize by funnel: scoped, proposed, DISCOM-submitted, CEIG-approved, commissioned. Anything DISCOM-submitted or beyond stays in Enact until completion to protect the subsidy application timeline.
- Migrate the design library. Module library, inverter library, brand assets, and DISCOM template library move to the new platform on the first onboarding call. Re-export the PM Suryaghar subsidy template library as a backup CSV before cancelling Enact.
- Re-train the bench on the C&I depth. Three to five days of guided practice on the C&I shading flow, the CEIG drawing presets, and the corporate-buyer proposal builder. The residential motion stays familiar and absorbs faster than the C&I crossover work.
- Run a parallel month on three C&I quotes. For one month, re-quote three live C&I inquiries on both platforms. Document the BOQ delta, the shading depth delta, and the proposal close-rate signal.
- Hard cutover for new C&I leads. From day eight, every new C&I inquiry runs on the new platform. The Enact license stays paid for one quarter to close the residential pipeline, then the team consolidates to a single license at quarter two.
The most common failure mode is the senior residential designer who memorized the Enact PM Suryaghar template workflow and feels the cutover as a productivity loss in week one. The C&I work pays the cutover back within the first three commercial quotes on the new platform.
When Staying on Enact Solar Is the Right Call
Two profiles get better economics by staying on the current platform. Solo and two-person teams running pure-residential PM Suryaghar volume under 4 MW per year. And residential-only EPCs that never plan to take a C&I rooftop inquiry. The signal to switch is a first 250 kW C&I lead, a quarterly C&I revenue share crossing 20 percent, or an AHJ first-pass rejection rate on residential projects above 18 percent.
How Heaven Designs Helps
The switch from Enact to SurgePV solves the design and proposal layer for both residential and C&I. The bottleneck on the back end is the same one Arka360 EPCs hit: a designer who produces CEIG-stamped permit packets at the pace BD is winning C&I tenders.
- Solar Rooftop Detailed Engineering Design.
- Solar Ground Mount Design.
- Electrical CEIG Drawings.
- Download a sample DISCOM-ready packet.
For the PM Suryaghar lead pipeline, the QuickEstimate solar CRM ships PM Suryaghar subsidy auto-calc. For installation handover in Gujarat and Maharashtra, Heaven Green Energy handles execution. For contact us, turnaround under four business hours.
Deeper reads: Arka360 alternatives, solar design software in India.
FAQ
Is SurgePV cheaper than Enact Solar?
Not on the sticker per seat. Enact runs around ₹70,000 per seat per year and SurgePV runs ₹1.1 lakh per seat per year on the five-seat tier. The total cost picture flips on the all-in stack. Enact plus AutoCAD plus PVsyst for C&I bid lands the loaded cost at ₹7.75 lakh per year on a five-seat bench. SurgePV alone lands at ₹5.5 lakh and covers the same workflow.
Does SurgePV handle PM Suryaghar at the depth Enact ships?
Yes. The PM Suryaghar auto-calc covers the central subsidy plus state top-ups for the major participating states. The proposal output formats for the National Portal upload. The motion matches what Enact sets the bar at on the residential side.
Can SurgePV handle a 1 MW C&I rooftop project?
Yes. SurgePV’s commercial workspace handles C&I rooftops up to 5 MW with 8,760-hour shading, CEIG-format drawings, IS 875 wind-zone presets, and corporate-buyer proposal output.
Does SurgePV ship DISCOM presets for my state?
SurgePV ships presets for MSEDCL, GUVNL, TANGEDCO, BESCOM, KSEB, DHBVN, PSPCL, and APSPDCL on the standard tier. Additional state presets ship quarterly.
Can I migrate my existing Enact projects?
Library inputs migrate cleanly on the first onboarding call. Module library, inverter library, brand assets, and DISCOM templates all import. Individual project files do not migrate one-to-one. Leave in-flight Enact projects on Enact until commissioning, route new inquiries to SurgePV from day one.
Will SurgePV’s yield report pass IREDA or PFC audit?
For C&I projects up to 5 MW, yes. The output has been accepted by SBI Power, PFC, and IREDA on first pass. For SECI bids above 50 MW where the IE requires .PRJ format, keep one PVsyst seat.
Should I stay on Enact for residential and add SurgePV for C&I?
Possible in year one but inefficient by year two. Two onboarding flows, two support contracts, two renewals. SurgePV covers both motions. Consolidation pays back in three quarters once C&I revenue crosses 30 percent of the book.
What about Arka360 versus Enact?
Both ship India-residential PM Suryaghar at adequate depth. Arka360 has slightly broader DISCOM coverage (6 states versus 5). Enact has a slightly cleaner residential proposal motion. Above 250 kW C&I both hit the same engineering depth ceiling. The platforms differentiate more on UI preference than on capability.
