Both PVcase and PVX run inside AutoCAD. Both target utility-scale solar. The difference is in how they handle terrain: PVcase designs the layout first and analyzes grading after. PVX analyzes terrain first and adapts the layout to what the ground actually looks like. This post compares the two on methodology, terrain accuracy, cable routing, and constructability.
If you are evaluating both, the decision comes down to whether your projects have terrain complexity that affects construction cost.
Quick comparison
| PVcase | PVX | |
|---|---|---|
| Grading comparison | Not available | 3 approaches compared side by side |
| Earthwork savings | No published data | $727K saved, 70% less volume |
| Cable optimization | Semi-automatic routing | 3 topologies, per-string voltage drop ($430K saved) |
| Terrain model | Simplified surface | Full-resolution reconstructed grid |
| CAD platform | AutoCAD | AutoCAD |
Same CAD platform. Different engineering depth on complex terrain.
Request a Demo + 2-Week Free Trial →The Core Difference: Layout-First vs. Terrain-First
PVcase optimizes panel placement first. It generates a layout on a simplified terrain surface, then lets you analyze grading after the fact. This is the standard approach in solar design software and it works well on flat or gently sloped sites.
PVX reverses that order. It reconstructs a grid surface from the user’s input data (LiDAR, contours, survey points) at a configurable resolution, then runs grading analysis on that surface before layout begins. The user controls grid precision, and all slope analysis, cut/fill calculations, and pile placement reference this reconstructed surface. The layout adapts to the terrain rather than the terrain adapting to the layout.
On flat ground, the difference is marginal. On complex terrain (slopes above 10%, mixed soil hardness, rocky substrates), the order of operations determines whether your grading estimate survives contact with a bulldozer.
Why the order matters
Traditional full-terrain smoothing on a site with 44% hard rock and slopes reaching 40-45% required 118,225 m3 of cut volume. PVX’s pile-adaptive grading on the same site, same panels, same capacity: 34,819 m3. That is 70% less earthwork and $727K in cost reduction. Read the full earthwork case study.
The savings came from three specific capabilities: slope analysis before layout, soil hardness mapping that identified the rock zones, and table splitting (2x26 to 2x13) that brought every pile under 4m without losing DC power. None of those steps are possible if terrain analysis happens after layout.
Terrain Accuracy
PVcase G2 reviews consistently flag terrain handling as a weak point. Three or more tagged reviews cite “inaccurate terrain analysis” as a specific complaint. Users also report that the software uses a simplified terrain model rather than working directly with the topographic surface.
PVX reconstructs a grid surface from the user’s terrain input at a configurable resolution (the user selects the grid precision). Cross-section views, slope analysis, and grading calculations all reference this reconstructed surface, which preserves the detail of the original ground data. The max cut depth on the case study above dropped from 3.0m (full smoothing) to 0.8m (pile-adaptive) at the same cross-section location. That level of precision requires working with terrain data that retains the actual site characteristics.
Cable Routing
PVcase offers semi-automatic cable routing where the user defines trench routes and the software follows them. G2 reviewers note that “the software does not always follow user-defined trench routes precisely,” sometimes requiring manual corrections on complex layouts.
PVX automates cable routing using defined trench corridors and calculates actual routed lengths, not bird’s-eye distance. At a 130 MWp plant, PVX compared three cabling topologies (Line String, U String, Leapfrog) across 338 DC combiners and 26 transformer areas:
| Topology | Loop Length | Voltage Drop (4mm2) | Per-DCB CAPEX | 130 MWp CAPEX |
|---|---|---|---|---|
| Line String | 191.86 m | 1.20% | $11,304 | $3,820,752 |
| U String | 181.37 m | 1.14% | $10,880 | $3,677,440 |
| Leapfrog | 165.85 m | 1.04% | $10,032 | $3,390,816 |
Leapfrog routing saved $430K and shortened cable runs by 14%. PVX generates all three topologies with voltage drop per string, per cable cross-section. The comparison takes minutes, not days. Read the full cabling case study.
PVsyst Export
Both tools export to PVsyst. PVcase users on G2 generally report that the PVsyst integration works well and is a strong point of the platform. PVX produces clean PVsyst exports that reflect the design module-by-module, including terrain-corrected module positions and orientations.
Comparison Table
| Capability | PVcase | PVX |
|---|---|---|
| Design methodology | Layout-first | Terrain-first |
| Terrain model | Simplified surface | Reconstructed grid surface at configurable resolution |
| Multi-scenario grading | Not available | 3 approaches compared in minutes |
| Cable routing | Semi-automatic (user-defined routes) | Automatic trench corridor routing, 3 topologies |
| Soil hardness mapping | Not available | Per-cell classification before grading |
| PVsyst export | Supported | Supported, terrain-corrected positions |
| CAD platform | AutoCAD | AutoCAD |
| Site selection/prospecting | Yes (Anderson Optimization) | No |
| Product suite | PVcase (single app) | PVX.Cad (AutoCAD) + PVX.View (browser) |
Where PVcase Has Coverage PVX Does Not
Site selection. PVcase includes a GIS-based prospecting module (Anderson Optimization) for evaluating candidate sites before design begins. PVX does not cover site selection. If your workflow starts with finding sites rather than designing on sites you already have, PVcase covers that step.
What PVX Does Better
Terrain accuracy on difficult sites. Complex terrain, steep slopes, mixed soil hardness: this is where terrain-first methodology produces materially different results. The $727K earthwork savings and 70% volume reduction came from a site that layout-first tools would struggle to optimize.
Cable cost optimization. Automatic multi-topology comparison with real trench routing and per-string voltage drop. $430K saved at 130 MWp is not a theoretical number. It came from comparing three topologies across every combiner on the site.
Constructability. Max cut depth reduced from 3.0m to 0.8m. Every pile brought under 4m. These are construction-ready outputs, not design estimates that need field adjustment.
Browser-based review. PVX.View lets non-CAD stakeholders (construction managers, investors, permitting teams) explore the 3D terrain model, cross-sections, and design data in a browser. No AutoCAD license needed for review.
Which Tool Is Right for You
Choose PVcase if your projects are primarily on flat or gently sloped terrain, you need site selection and prospecting built into your design tool, or you value having the largest user community and most third-party resources.
Choose PVX if your projects involve complex terrain where earthwork costs are a significant budget line, you need to compare multiple grading approaches before committing to a design, cable cost optimization at the topology level matters to your margins, or your workflow requires construction-ready outputs that do not need field rework.
Consider both if your portfolio spans flat and complex sites. PVcase handles simple sites efficiently. PVX pays for itself on the first complex terrain project where grading and cabling decisions carry six-figure cost implications.
The fastest way to evaluate PVX on your own site data is a 30-minute technical demo with your actual project files. No generic slide deck. Your terrain, your constraints, your numbers. Every demo includes a 2-week free trial so you can test PVX.Cad on your own projects.
Last updated: March 2026. Competitor data sourced from public websites and G2 reviews.
