Open Beta until 15 June 2026

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Glare Simulation for PV Systems

Simulate the Glare Impact of PV Systems — fast, precise, digital

Our online tool calculates reflections, glare times, and intensities of photovoltaic systems. Create professional glare analyses directly in your browser — no installation, no waiting.

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Modernes Wohnen mit PV-Anlage

Simulate PV glare in compliance with international standards & guidelines

Calculations aligned with recognized glare guidelines worldwide

🇺🇸 FAA 2021-09862 Airport solar glare 2021
🇪🇺 EASA CS-ADR-DSN Aerodrome design 2022
🇩🇪 Fernstraßen-Bundesamt Federal highways position paper 2025
🇩🇪 LAI-Leitfaden PV glare guide 2015
🇦🇹 OVE R 11-3 PV glare directive 2016
🇨🇭 EnergieSchweiz Solar notification & permit guide 2023

Simulate the Glare Impact of All Common PV Systems

Our simulation tool supports all mounting types — from rooftop to tracker.

Why Glare Analysis?

PV Glare — an Underestimated Project Risk

Solar module reflections can dazzle like a mirror. This affects residents, drivers, pilots — and ultimately your project.

Approvals at Risk

Many approval processes require evidence on glare impact. An early analysis shows whether your site is critical — before the authority asks or an already built system has to be modified.

Avoid Costly Retrofits

Anti-glare films, changed module tilts, or even dismantling rows: Retrofit measures cost many times more than planning costs. A simulation before construction reveals problems before they become expensive.

Defuse Conflicts Early

Glare from PV modules regularly leads to neighbor complaints. A transparent glare analysis creates clarity early on for residents, municipalities, and authorities — and protects your project reputation.

Traffic & Aviation Safety

PV systems near roads, railways, or airports require special care. Glare can endanger drivers and pilots. Assessments for these use cases are often legally required.

Who is it for?

Who is PV-GlareCheck made for?

Whether planning, assessment, or being affected — the software supports everyone who needs to understand glare impact.

Developers & Planners

Fast preliminary glare assessment already in the site and layout phase — before detailed planning and costs arise.

Experts & Assessors

An efficient evaluation tool for reflection and glare-time calculation as a basis for your own professional assessment.

Homeowners

Simulate in advance whether your own rooftop system could dazzle neighbors — and avoid conflicts before they arise.

Affected Residents

Assess a suspected glare from a nearby system in a comprehensible way — as a factual basis for a conversation.

and many more

Energy consultants, municipalities, authorities — wherever the glare impact of PV systems matters.

Solare Blendung einer PV-Freiflächenanlage an einer Straße
Real glare from a ground-mounted PV system — photographed from a highway
Features

Everything for a Thorough Glare Analysis

Precise simulation results, professional visualizations, and intelligent filters — all in one application.

Glare Time Heatmap

See at a glance when and how long glare occurs — for every day of the year, for every observation point. The heatmap shows glare times by time of day and date, color-coded by intensity.

Blendzeiten-Heatmap

Reflection Map

All reflection directions visualized on Google Maps. See exactly where PV modules reflect — with color coding by frequency and optional time-point view.

Reflexionskarte

3D Perspective

The equirectangular projection shows PV areas, reflection zones, and the sun path from the observer's perspective. With zoom, sun display, and intensity-coded coloring.

3D-Perspektive

Intelligent Filters

Filter results by intensity threshold, core glare (specular), sun overlap, vertical glare source height, and field of view. All charts update instantly.

Intelligente Filter
Your Output

The Finished Glare Assessment Report

Interactive online report and PDF export — everything you need for permit applications, traffic authorities, or internal review.

One document for every stakeholder

Clearly structured, traceable, and reviewable — from the project summary down to per-point detail.

  • Summary & compliance check per observation point
  • Heatmap, daily duration, and intensity charts per point
  • Reflection map with ray directions and 3D perspective
  • Topography and obstacle considerations documented
  • PDF export and (Pro) raw data export to Excel
PV-GlareCheck Report

See a real example

Download a full sample report — the exact format you'll receive after your simulation.

Download sample report (PDF)
Methodology

Scientifically sound — fully reviewable

The simulation follows current state-of-the-art. Every value in the report traces back to a physical basis.

Astronomical Sun Position

High-resolution sun-path calculation (azimuth / elevation) per location and timestamp — 1- or 5-minute resolution across the full year.

Reflection Geometry

Reflection direction derived from module geometry, tilt, and azimuth. Each observation point is checked against every module ray — no sampling, full raster.

Beam Spread & Module Profile

Module-specific reflection profiles (beam spread, hot-spot vs. diffuse) — a standard module is pre-configured; custom profiles available in Pro.

Read the full methodology in the user guide →
Frequently Asked

Questions we hear a lot

If your question isn't answered here, just contact us: info@pv-glarecheck.com

Is the report accepted by authorities?
Yes. The report documents methodology, data sources, and boundary conditions so it can be submitted as an attachment to building permits or traffic-safety assessments. The methodology follows the relevant guidelines (see the Compliance strip at the top of this page).
How accurate is the simulation?
Sun position is computed astronomically to the minute; module reflection is geometrically exact. The biggest accuracy driver is the module geometry (tilt, azimuth, heights). The Pro plan also supports custom reflection profiles per module.
How long does a simulation take?
For a typical project with 5–20 observation points at standard resolution: 30–120 seconds. Very large projects (100+ points at 1-minute resolution) can take a few minutes.
Which output formats do I get?
Interactive online report (shareable web link) and PDF export are included in both tiers. Pro additionally provides raw-data export to Excel for your own analysis.
Are topography and obstacles taken into account?
Yes. Terrain data is loaded automatically; additional shading objects (buildings, trees, noise barriers) can be added manually in the Pro plan.
How much does it cost?
Free covers simple projects end-to-end — no credit card required. Pro extends functionality and capacity; project packages and tokens can be topped up as needed (see pricing below).
Where is data stored?
All project and simulation data is hosted on EU servers (Hetzner, Falkenstein). We comply with GDPR; details are in the privacy notice.
Can I try GlareCheck without commitment?
Yes — the Free tier is available without a credit card and is enough for a complete simple glare assessment. Just sign up, create a project, and give it a try.
Pricing

Simple & transparent

One standard price per project. Add-ons only when you actually need them.

Per Project

90 € one-time

30 simulation runs included

  • 30 simulation tokens included
  • Full base feature set
  • Interactive online report & PDF
  • No commitment, no subscription required
Start project

Optional Add-ons

Only add what you really need — both are optional and independent of the per-project base price.

Optional

Additional Simulations

50 €

Book 30 additional simulation runs for an existing project.

  • 30 additional simulation tokens
  • Credited to the selected project
  • No commitment, one-time payment
Optional · Pro feature pack

Pro Subscription

150 € / month

Unlocks advanced features — cancel monthly at any time.

  • Trackers, KML import, custom modules
  • Reflection map, 3D perspective, obstacles
  • Excel export & higher capacities
  • Cancel anytime

What Pro additionally unlocks

Free already offers the full base feature set. Pro unlocks advanced features and more capacity.

Feature Free Pro
Simulation
Time resolution1 minute1 minute
PV areas per simulation220
Observation points per simulation1060
Single-axis tracking systems (trackers)
Cross-tilt for PV areas
Define custom PV modules
Observation Points
Place individual points
Points along routes
Define field of view (FOV)
Data & Import
Model project on aerial imagery
Storage for results1 GB25 GB
KML import/export
Analysis & Report
Pre-analysis (sun path & angle filter)
Glare time heatmap
Daily glare duration (annual view)
Intensity analysis (cd/m², lux)
Smart filters
Topography modeling
Interactive online report
PDF report
Reflection map & 3D perspective
Obstacles & shading
Exclusion zones
Excel export of raw data

Start Your First Glare Simulation Now

Register for free and start simulating. No installation needed.

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