GPU-based 3D modelling · PV simulation framework

Advanced 3D irradiance modelling for complex PV projects

LuSim is LuciSun's GPU-based simulation framework for photovoltaic sites where geometry, surroundings, and layout matter. Analyse how light reaches or is blocked across your 3D scene, with view factors and component-level irradiance to support design decisions on agrivoltaics, bifacial arrays, carports, and other demanding configurations.

This release

3D solar resource assessment: irradiance, shading, and view factors.

Roadmap

Energy yield simulation is not yet integrated in this application as the continuation of resource assessment. Planned before end of Q4 2026. Until then, available on LuData.

What LuSim provides

Surface-level detail

Irradiance on PV module faces, leaves, ground patches, or any defined element, not array-level averages. Assess local non-uniformity and help identify areas where uneven light may contribute to electrical mismatch.

Component breakdown

Direct, diffuse, and reflected light traced separately so you can see what drives each result.

Temporal analysis

Full-year sequences at the timestep you need, from a single moment to annual patterns.

Visual interpretation

Heatmaps and view-factor views to read shading, asymmetry, rear-side exposure, and irradiance non-uniformity on the 3D model.

Location APIs

Pull irradiance source, far-horizon profile, and 3D terrain from site coordinates into the same workflow.

Batch mode

Compare module and row placement options and run parameter sweeps without rebuilding the scene each time.

Material and module libraries

Validated surface properties and PV module definitions for realistic reflectance and transmittance.

Structures and kinematics

Posts, frames, trackers, and moving arrays modelled with their shading impact on the site.

Flexible geometry inputs

Imported 3D models, drone scans, or custom layouts. LuciSun can reproduce complex project scenes and provide consulting support for site layout and measurement-system design.

Application cases

Examples of what teams assess with LuSim beyond the Symbiosyst demonstrators, from layout comparison to irradiance-monitoring placement. See more details on our company website.

01

Agrivoltaics

Tracker movement and structure shading; compare row and tracker placement options with irradiance split by component on crops and leaves.

02

PV carports

Parking-surface albedo, frontal shading from trees, and structure impact. Assess rear-cell irradiance and compare placement of albedometers, rear-side sensors behind bifacial modules, and related monitoring equipment.

03

BIPV

Compare module placement options at different orientations, with complex surrounding shading and local irradiance non-uniformity assessed on the facade.

04

Drone scan scenarios

Site geometry from a 3D drone survey, with per-module irradiance and shading captured from the real environment.

05

Irregular terrain

3D terrain from radar or elevation APIs. Compare module and row placement following the slope, with mutual shading across the installation.

06

Complex 3D shading

Terrain, vegetation, infrastructure, and mixed obstructions. Assess local shading and irradiance non-uniformity; compare representative locations for pyranometers, reference cells, and photodiodes.

Become a Beta-Tester
Symbiosyst · 3D agri-PV irradiance

Explore our SYMBIOSYST demonstrators

As part of the SYMBIOSYST project, we are releasing interactive demonstrators that show how LuSim traces 3D irradiance across real agrivoltaic sites, surface by surface. Two precomputed cases let you view results on open-field and greenhouse archetypes; a third configurable scene lets you set parameters and run your own simulation.

Explore the Demo
Bolzano irradiance heatmap over an agri-PV site
Bolzano · irradiance heatmap

Demonstrators

Three Symbiosyst scenarios: two precomputed views and one interactive scene you can run yourself.