Open Beta until 15 June 2026

Test the software now for free: 10 project tokens + full Pro feature set at no cost. No automatic charges, no subscription — nothing renews.

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.

Get started
Modernes Wohnen mit PV-Anlage

Simulate PV glare in compliance with international standards & guidelines

With targeted simulations and evaluation filters, you can meet the requirements of the following internationally recognized glare guidelines, among others.

🇺🇸 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.

Dachparallele Anlagen

Rooftop Systems

Roof-parallel mounting & tilted on flat roofs

Fassade & Balkon

Facades & Balcony PV

BIPV, vertical facade systems & balcony PV

Freiflächenanlagen

Ground-Mounted

Large solar parks & agri-PV

Tracker-Systeme

Tracker Systems

Single & dual-axis tracking systems

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.

Define PV Areas

Define PV areas (rooftop systems, ground-mounted fields and more) in just a few clicks on an interactive map — or via coordinate input or KML upload. For ground-mounted systems, for example, you only define the construction boundary (the outline of the generator field) — no tedious table-by-table modeling.

PV-Bereiche auf der Karte definieren

Exclusion Areas

Optionally define exclusion areas (EA) within PV areas (rooftop and ground-mounted alike) that don't count as PV surface in the simulation — e.g. clear roof areas around chimneys, or paths and stations within ground-mounted fields.

Ausschlussbereiche auf PV-Flächen

Pre-Analysis

Use the pre-analysis to identify the area potentially affected by reflections before running the full simulation.

Voranalyse: potenziell betroffener Bereich

Define Observation Points

Define observation points in just a few clicks, at which the glare effect is calculated in detail. Observation points can also be added via coordinate input or KML import.

Betrachtungspunkte definieren

Fields of View

Optionally, define fields of view for observation points — relevant e.g. along roads, where only glare in the viewing direction matters.

Sichtfelder für Betrachtungspunkte

Topography & Elevation

PV areas are modeled to the terrain via support points. Heights of the PV areas (e.g. table height for ground-mounted systems) and of the observation points are freely definable. Terrain elevations are fetched automatically or set manually — and KML imports for PV areas and observation points can optionally carry elevation data.

Topografie & Höhen – Stützpunkte

Obstacles

Optionally add obstacles — above-ground ones like trees or buildings, or topographic rises such as hills. They can block reflections between the PV area and an observation point, and also act as shading sources for the PV area.

Hindernisse einzeichnen

Interactive Report Builder

After the simulation you enter an interactive report builder: adjust figures, filter results, and export the project as a PDF. Pro users additionally get an Excel export of all results.

Interaktiver Report Builder

Set Filters

Set evaluation filters (e.g. intensity threshold, field of view, sun overlap, shading) — charts and tables update automatically. The filters also let you meet the requirements of various guidelines.

Filter setzen

Result Charts

Results are presented clearly as charts alongside tabular overviews — e.g. glare periods (day × time), daily glare duration, and intensity-coded glare times. The charts respond to the filters you set; individual figures can be copied to the clipboard or exported as image files (independently of the full project PDF export).

Ergebnisdiagramme

Interactive Reflection Maps

Pro users can display potential reflection directions for any point in time using reflection maps — optionally as a full-year overview.

Interaktive Reflexionskarten

3D Perspectives

Pro users can additionally view the situation as a 3D plot and run time-based evaluations here too via the time slider. This lets you validate screening measures, for example — drawn beforehand as obstacles.

3D-Perspektiven (Azimut / Elevation)
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.

Start now