Reslink vs Aurora Solar vs Arka360: Which Is Right for You?

Why This Comparison Matters for EPCs Right Now

The solar software market has expanded significantly in the last three years. EPCs evaluating design tools in 2026 are comparing platforms that look increasingly similar on their marketing pages. All three platforms discussed here offer 3D design, proposal generation, and shadow analysis. The real differences are in where those capabilities live (mobile vs desktop), what the downstream workflow produces (proposal-only vs full BOE and bank documents), and which markets and project scales the platform was genuinely built for rather than retrofitted to serve.

This comparison is written by Reslink. We have tried to represent Aurora Solar and Arka360 accurately from their public documentation. We recommend reading their own material as well before making a decision.

Reslink: Mobile-First, End-to-End, Any Scale

Reslink was built for field-first solar EPC workflows at any scale. The 3D design runs on a mobile phone, not as a reduced feature set, but as a fully optimised mobile workflow. A field rep can capture's the roof satellite imagery, build the 3D model, run shadow simulation, place panels, and generate a complete set of outputs including the proposal, BOE, Bills of Structure, and bank-ready SLD, layout drawing, and string drawing, before leaving the customer's site.

Reslink supports projects from residential rooftops to 1 GW utility-scale ground-mount, within the same platform and the same workflow. The platform adapts to local grid codes, irradiance data, compliance standards, and financial parameters for any geography, with the deepest localisation currently for India and active expansion into the Middle East, Southeast Asia, Africa and Australia. For EPCs who need a platform that travels with the team and produces every document needed from design to financing in one workflow, there is no equivalent in this comparison.

Aurora Solar: The US Market Leader

Aurora Solar is the dominant solar design platform for residential and C&I EPCs in the United States and Europe. Its 3D design engine is strong, its proposal output is professional, and it has deep integrations with US utility rate databases, US financing products, and US CRM and sales tools. For an EPC operating primarily in the US residential or C&I market with an office-based design team, Aurora Solar is a credible choice.

The limitations become clear outside the US context and for field-first workflows. Aurora Solar does not offer mobile 3D design. The design workflow requires a desktop or laptop. It does not generate automated BOE or Bills of Structure. The proposal output does not include bank-ready SLD reports, layout drawings, or string drawings submittable to financial institutions without modification. For EPCs in emerging markets or EPCs with field-based sales teams, these gaps are structural, not minor feature absences.

Arka360: Strong Proposal Quality

Arka360 started as a US solar proposal tool with strong visual output and has expanded into India and other markets. Its proposal design quality is high and the platform is well-suited to office-based commercial and industrial EPCs who need professional documentation for tendering. The 3D design uses satellite imagery as the base and is desktop-first.

For EPCs who need to close deals on-site, the desktop-first architecture is a blocking constraint. Arka360 does not offer mobile 3D design. It does not generate automated BOE or Bills of Structure. Bank-ready SLD and string drawing output is not a native feature. Local compliance for markets outside the US requires manual configuration. For the residential and commercial rooftop segment in India and other emerging markets where the competitive advantage comes from on-site closing, Arka360's architecture works against the workflow.

The Decision Framework: Which Platform Fits Your Workflow

Frequently Asked Questions

Q1. Is Aurora Solar available in India and other emerging markets?

Aurora Solar is available globally but is architecturally optimised for the US and European markets. Its utility rate databases, financing integrations, and compliance outputs are US-primary. EPCs in India, the Middle East, Southeast Asia, Africa or Australia will need to configure local parameters manually and will not have access to the same depth of local market data that US users receive natively.

Q2. Does Arka360 support utility-scale ground-mount projects?

Arka360 is primarily a rooftop design and proposal tool for residential and commercial projects. It is not designed or marketed for utility-scale ground-mount projects. EPCs working across rooftop and utility-scale segments within the same business would need a separate tool for ground-mount design alongside Arka360.

Q3. What does "bank-ready documents" mean and which plattorms provide them?

Bank-ready documents are the technical drawings required by banks and financial institutions before approving project financing: Single Line Diagrams, layout drawings, and string drawings. Of the three platforms compared here, only Reslink generates these documents natively from the 3D design in a format submittable to banks without modification. Aurora Solar and Arka360 do not include bank-ready SLD or string drawing output as native features.

Q4. Which solar design software is best for an EPC transitioning from residential to commercial projects?

For an EPC expanding from residential into commercial, the key requirements are: a platform that handles larger and more complex roof geometries, automated BOM generation (manual BOM errors are much more costly on commercial projects), and bank-ready documentation for financing. Reslink covers all three within the same platform and workflow that the team is already using for residential. Moving to commercial does not require switching tools or adding a second platform.

Q5. How does Reslink's geographic adaptability work in practice?

Reslink incorporates location-specific irradiance data, grid codes, compliance standards, and financial parameters for each project geography. This means the shadow analysis uses actual solar resource data for the project location, the proposal financials adapt to local tariff structures and incentive schemes, and the output documents are formatted to meet local authority and bank submission requirements. The platform currently has the deepest localisation for India and is actively expanding to the Middle East, Southeast Asia, Africa and Australia.

Q6. Can Reslink replace both AutoCAD and Excel in a solar EPC workflow?

Yes. Reslink replaces AutoCAD for layout drawing and SLD production, Excel for BOM preparation and financial modelling, and generic presentation tools for proposal creation. The integrated workflow means that data from the 3D design flows through to all downstream documents without re-entry, eliminating the error-prone handoffs that occur when AutoCAD, Excel, and proposal tools are used separately.