Solar Ladder bundles 3D CAD design, CRM, project management, invoicing and end-customer financing into one platform for Indian solar EPCs. Solar Spine is built to run the operations and compliance work a rooftop or C&I EPC actually does—staging projects through permit, installation and commissioning with automatic task escalation, payment gates, DISCOM net-metering and subsidy tracking.
In short
Solar Ladder is a bundled suite for Indian solar EPCs covering satellite-based 3D design with real-time shading, CRM with proposals, project management, invoicing (Books), a procurement marketplace, and embedded end-customer financing via EMI loans. It markets itself as a one-platform alternative to stitching together separate CAD software, a CRM and a lender. The platform claims a 2-minute average design-creation time (solarladder.com/design) and '5× faster proposals' (its compare pages), both checked 9 September 2026, and includes two native mobile apps (a main app and a separate O&M app for post-installation monitoring). It raised ₹11 crore ($1.3 million) in seed funding from Axilor Ventures, Titan Capital and others in 2023 (Mercom India, Entrackr) and shows customer logos including Mahindra Solarize, Adani Solar and Fourth Partner Energy on its homepage.
As a design-first platform, Solar Ladder's strengths lie in CAD workflow speed and bundled lending relationships. However, it markets no execution guardrails for the Indian subsidy-and-DISCOM process a rooftop or C&I EPC must actually run: nothing describes stage gates on open checklists, document verification gating, automatic escalation of overdue work, or DISCOM-specific net metering and PM Surya Ghar application tracking. WhatsApp appears only as Solar Ladder's own support channel to installers, not as an automation tool for lead follow-up. There is no AI telecaller, no self-serve free trial (only a demo), no telequeuing, and no plain-English reporting.
Pricing is entirely custom-quoted after a demo call—not published anywhere on Solar Ladder's site (no /pricing route exists per its own sitemap), G2, Capterra, or the independent review site apps.list.solar. This makes switching costs unknowable upfront and comparison-shopping impossible. Migration would rely on manual data pulls or negotiated exports, since Solar Ladder's own site makes no export claim; design and proposal assets (the highest-value artefacts) have no documented export path and would likely be re-keyed or re-designed in Solar Spine.
Where Solar Ladder wins
- One platform bundles 3D solar design with real-time shading analysis, proposals, CRM, invoicing, procurement and end-customer EMI loans—you do not have to wire together separate CAD software, a CRM and a financing partner. This bundling is rare among solar CRMs.
- Design and proposal generation are fast: a claimed 2-minute average design time (checked on solarladder.com/design, 9 September 2026), with a '5× faster proposals' claim repeated across their compare pages. A separate O&M app tracks post-installation generation by plant.
- High-touch, India-native onboarding reduces adoption friction for less-technical installer teams: dedicated relationship manager, daily group training plus 1:1 sessions, WhatsApp and phone support from a Mumbai-based team, backed by ₹11 crore in institutional seed funding and real trade-press coverage (Inc42, ET Energy World, Mercom India, Entrackr, EQ Magazine).
Where Solar Spine wins
- Automatic execution guardrails prevent premature work: stage gates block advancement until checklists close, document gates require ops verification before handoff, and overdue tasks escalate up the org chart every night. Solar Ladder markets none of this.
- DISCOM and subsidy workflows are built into the product: net-metering steps branch for BRPL, BYPL, TPDDL, PVVNL, NPCL, DHBVN and UHBVN; PM Surya Ghar tasks include submission, DCR certificate, GBI and central subsidy redemption tracking as dated milestones—Solar Ladder has zero DISCOM capability and only a narrow invoice-format mention of PM Surya Ghar.
- Payment stages enforce cash collection: material cannot dispatch until payment thresholds are met (default 25% before structure, 65% loan / 95% non-loan before material, 100% before net meter); overdue payments trigger daily alerts to owner and manager. Solar Ladder has no payment gating.
- Pricing is published and transparent: flat ₹10,000 a month or ₹99,999 a year plus 18% GST, unlimited users, no setup fee. Solar Ladder keeps pricing hidden behind a demo call, making it impossible to comparison-shop before a sales conversation.
- A self-serve 30-day free trial requires no card, so you can land data and run workflow simulations without a sales call. Solar Ladder offers only a card-free demo and onboarding process, not an independent trial period.
Best for
EPCs that build their workflow around fast 3D design and proposal generation and want end-customer financing tightly integrated.
Not for
Teams that need stage gates to prevent premature work, DISCOM-specific net-metering workflows, PM Surya Ghar subsidy application tracking, automatic escalation of overdue tasks, or full transparency on software cost before a sales call. Neither platform does roof design consulting; both expect you to bring site designs or use Solar Ladder's CAD tool.
Pricing
Solar Ladder
Solar Ladder does not publish pricing anywhere—not on its own site, G2, Capterra, or independent review sites. Every call-to-action leads to 'Book a Demo' or 'Get Started Now,' and price is disclosed only after a live sales call. The vendor's own site confirms no /pricing route exists (per its sitemap.xml). A third-party review (apps.list.solar) describes a qualitative tier structure (lead management and proposals on lower tiers; financing, reporting and automation on higher tiers) with zero numbers. Compare pages make only a vague claim: 'Affordable, all-inclusive INR pricing' (without stating a figure).
| Tier | ₹ / user / month | Notes |
|---|---|---|
| Custom quote (demo-gated) | Not published | Price disclosed only after a live demo. No tier names or numbers published anywhere by the vendor. Third-party review claims qualitative tiers but attaches no figures. |
Read from https://apps.list.solar/tools/solar-ladder/ on 8 September 2026
Solar Spine
Solar Spine price list, the same numbers Razorpay charges
Feature by feature
| Capability | Solar Ladder | Solar Spine |
|---|---|---|
| Solar-specific | ||
| Solar sales and install stages out of the box | Yes. CRM and project-management pages describe stages tweaked to the requirements of the solar industry. | Yes. 7 sales stages and 17 project stages seeded on day one, all editable. |
| Stage checklists that change with loan, subsidy and DISCOM | No. Tasks page describes only generic reminders and team assignment; no mention of checklists that change based on loan type, subsidy or DISCOM. | Yes. 57 checklist items; loan, subsidy and DISCOM-specific tasks appear only where they apply. |
| DISCOM net-metering steps tracked | No. Zero mentions of DISCOM or net metering as a product capability across the homepage, all feature pages and compare pages. | Yes. Net-meter paperwork branches for BRPL, BYPL, TPDDL, PVVNL, NPCL, DHBVN and UHBVN. |
| PM Surya Ghar and subsidy tracking | Partly. A vendor blog post mentions the invoicing tool ensures compliance for PM Surya Ghar submissions; this is a narrow invoice-format touchpoint, not a subsidy-application-status tracking workflow. | Yes. PMSG submission, DCR certificate, GBI and central subsidy redemption as dated tasks. |
| kW as a native field with kW reporting | Yes. kW is a first-class metric: homepage claims 500+ MW of projects managed; compare pages state no kW or project limits. | Yes. Every deal and project carries capacity; dashboards and targets report in kW. |
| Roof design, shading and proposal generation | Yes. Dedicated design product: satellite-based 3D design with real-time shading, 360-degree previews, a claimed 2-minute average design time, natively integrated with proposals. | No. Solar Spine does not do roof design. Use a design tool and track the job here. |
| Execution | ||
| Overdue work escalates up the org chart on its own | No. Full-text search of tasks and project-management pages finds no escalation or org-chart language; task handling is only assignment and reminders. | Yes. Every night a late task climbs one rung and keeps climbing until someone acts. |
| A stage cannot be advanced with open checklist items | No. No mention anywhere of blocking stage advancement while checklist items remain open. | Yes. The advance button is unavailable until the stage's items are closed. |
| Documents verified by ops before work proceeds | Partly. Compare pages list document management as a Solar Ladder feature; no language indicates documents gate stage progress or require ops verification. | Yes. A document is done when ops marks it correct; a rejection goes back to the person who photographed it. |
| Field use on a phone: photos, tasks, call outcomes | Yes. Two native mobile apps (main app and a separate O&M app for post-install monitoring) on both iOS and Android, plus a mobile-capable design tool. | Yes. Every screen works on a phone; documents are photographed at the customer's house. |
| Money | ||
| Instalment schedule per project | No. The only capability mentioned is a 70:30 GST-split invoice format, not a staged milestone-billing schedule for the EPC's own project payments. | Yes. 10/70/20 or whatever you agreed, with due dates and outstanding balance visible to all. |
| Material cannot dispatch until payment is collected | No. No mention of material dispatch being gated on payment collection. | Yes. Thresholds per stage, set by the workspace; the default is the one the first customer ran. |
| Daily overdue payment alerts to owner and manager | No. Tasks page describes only generic daily reminders; no payment-specific overdue alerts to owner or manager. | Yes. 7 am every day, to the person who owns the collection and their manager. |
| A bounced cheque reopens the instalment | No. Not mentioned anywhere. | Yes. Yes |
| GST invoices and quotes from the same record | Yes. Compare pages mark 'GST invoicing and billing — fully India GST-compliant' as a Solar Ladder feature; vendor's blog confirms the tool generates 70:30 GST-compliant invoices. | Yes. Invoice creation is a stage in the pipeline; the subscription itself is GST-invoiced too. |
| Leads and calling | ||
| PIN-code check on incoming leads | No. No mention of PIN-code or geographic serviceability checks anywhere on the site. | Yes. Leads outside the PIN codes you serve are kept out of the AI caller's queue. |
| AI caller that qualifies leads and books visits | No. No AI voice-calling feature mentioned anywhere on the marketing site or independent review sites. | Yes. Optional. Calls 9 am to 9 pm IST, books the visit on a named salesperson's day, hands off with notes. |
| Built-in telecalling queue with daily batches and outcomes | No. No built-in telecalling queue with daily batches and outcome tracking is described anywhere. | Yes. Queues built and ordered before the caller sits down; one outcome vocabulary for humans and the AI. |
| Lead outcomes written back to Meta | No. No mention of writing lead outcomes back to Meta for ad optimisation. | Yes. Qualified, converted and disqualified statuses flow back through the lead sheet into Meta's Conversions API, so the account optimises for buyers, not form-fillers. |
| WhatsApp messaging and automation | Partly. WhatsApp is documented as Solar Ladder's own support channel to installers and a manual action to share invoices to customers; a vendor blog post recommends installers use a separate WhatsApp Business API, implying Solar Ladder does not automate WhatsApp messaging. | Partly. Click-to-chat and logged WhatsApp interactions. No automated messaging. |
| Reporting | ||
| Per-person monthly targets and attainment | No. No mention of per-person monthly targets or attainment tracking. | Yes. Yes |
| Ask the business a question in plain English | No. No natural-language or conversational-analytics feature mentioned anywhere. | Yes. Director and GM only. Finding, evidence, table, caveat, next step, from live data. |
| One-click export of everything | Partly. Solar Ladder's own site makes no export claim; the independent review site apps.list.solar lists basic CRM data export (CSV) as a feature, unconfirmed by the vendor. | Yes. Excel export any time. No lock-in. |
| Pricing and support | ||
| Prices published in INR | No. No price figure published in any currency anywhere. Compare pages make only the qualitative claim 'Affordable, all-inclusive INR pricing.' | Yes. Yes |
| Free trial without a card | Partly. Every CTA is 'Book a (Free) Demo,' not a self-serve trial. The 'no credit card required' claim applies to the demo and onboarding process, not a trial period. | Yes. 30 days, no card, no call. |
| India-based support in IST | Yes. Mumbai HQ, +91 phone number in footer, dedicated relationship manager, daily training sessions, WhatsApp and phone helpline described as ideal for Indian customers. | Yes. Email, replies within one business day, from Mumbai. |
Switching from Solar Ladder
- Export your leads and customers from Solar Ladder. The vendor's site makes no export claim, but the independent review site apps.list.solar lists basic CRM data export (CSV) as a feature. Request this export and upload it into Solar Spine's calling queue and customer import. Design and proposal assets (3D layouts, shading models, branded PDFs) have no documented export path and will likely need to be archived as PDFs or screenshots.
- Leave the financing and procurement relationships in place. Solar Ladder's EMI loans and materials procurement are partnerships with its own lending and supplier networks, not portable CRM records. You will need to separately re-establish any such relationships in your own finance and supply chains since Solar Spine has no embedded-lending marketplace.
- Switch at a natural project boundary. The highest-value artefacts (designs and proposals) are difficult to migrate cleanly, so plan to move new leads and new designs into Solar Spine going forward while archiving active Solar Ladder projects as PDFs until completion. This avoids the friction of mid-project porting.
- Map your solar workflow stages and checklists into Solar Spine. Solar Spine ships with seven sales stages and 17 project stages, all editable, with 57 pre-built checklist items that branch on loan type, subsidy and DISCOM. Customise these to match any stage-specific tasks you have run in Solar Ladder or in spreadsheets alongside it.
- Use Solar Spine's pricing transparency as the wedge in your conversation. Unlike Solar Ladder (no published price, demo-gated), Solar Spine shows its cost upfront (₹10,000/month or ₹99,999/year + GST, unlimited users, 30-day trial with no card), so your team can evaluate the software on its own terms before committing.
Questions people ask
Can I use Solar Ladder and Solar Spine together?
Not natively. Solar Ladder has no documented integration to Solar Spine, and their APIs are not known to sync. You would have to manually export leads and customers from Solar Ladder, upload them into Solar Spine, and run the two systems in parallel until you are ready to offboard from Solar Ladder entirely.
Does Solar Spine replace a design tool?
No. Solar Spine is a CRM, project tracker and operations backbone. It does not do roof design, shading analysis or proposal generation. Use Solar Ladder, Arka 360, OpenSolar, PVSyst or Aurora for design work and import the finished designs as linked records or attachments into Solar Spine.
Is there an integration between Solar Ladder and Solar Spine?
Not today. Solar Ladder does not publish an API or document any integration with Solar Spine, and no vendor page mentions a sync between the two. To move over, export what data you can from Solar Ladder (the vendor makes no export claim itself, though the independent review site apps.list.solar lists basic CSV export) and import leads and customers into Solar Spine through its web upload. Design and proposal records have no documented export path from Solar Ladder and would need to be re-created.
Which is cheaper for a 12-person rooftop EPC?
Solar Spine is ₹10,000 a month flat (unlimited users, no per-seat charge) = ₹120,000 a year before GST. Solar Ladder does not publish pricing, so you cannot comparison-shop without a sales call. For a 12-person team, Solar Spine's flat rate eliminates per-user surprises; Solar Ladder's hidden cost and custom quotes create unpredictability.
Where is my data hosted?
Solar Spine runs on Postgres in Mumbai (ap-south-1) with row-level security fencing every workspace; documents go to a private store. Solar Ladder does not publish where its data lives. This matters for compliance: if you need to confirm India hosting and ops-verification trails for DISCOM and tax authorities, Solar Spine offers that out of the box.
What if I want design software built in?
Solar Ladder's design integration is a genuine differentiator if your team does 5+ designs a day and you want proposal speed. Solar Spine is designed for teams where design happens separately (in another tool or by a partner) and the EPC's job is project delivery, payment collection and compliance tracking. If design speed is your core workflow, keep using Solar Ladder's design tool; migrate only the CRM and execution side to Solar Spine if you want more guardrails.
Other comparisons
Run one real project through it this month. You will know by the end of it.
30 days free, no card, no call. Then ₹10,000 a month for the whole company, however many people you put on it.