Indoor Photovoltaic Energy Harvesting
Your lights are already paying for your dispensers.
BrightHarvest harvests photovoltaic energy straight from your ceiling fixtures — stored batteryless — and delivers free power to every paper towel, soap, and hand sanitizer dispenser in your building. Zero grid draw. No battery swaps. Ever.
How It Works
Light in. Free power out.
A closed loop that lives entirely inside your building's existing infrastructure — no rooftop panels, no new wiring runs.
PV collectors mount to existing fixtures
Slim indoor photovoltaic collectors clip onto your ceiling fixtures. No new lamps, no structural work — just a 15-minute per-fixture installation.
Energy stored in batteryless capacitors
Harvested current flows into a compact capacitor storage unit — nothing to degrade, leak, or replace over years of operation.
Dispensers run 100% off harvested light
Your paper towel, soap, and hand sanitizer dispensers draw from stored light energy — quietly, continuously, for free.
Live Installation
See It Installed
A fully operational BrightHarvest system powering dispensers from ambient light. No grid draw. No batteries.
Founder Interview
See BrightHarvest in Action
47 minutes with our founder — covering the technology, graphene innovation, and the investment opportunity.
ROI Impact
The numbers that matter to facilities managers.
Every building we retrofit gets a custom energy audit before we start. The data below reflects real-world commercial deployments.
Calculate your building's ROIEnergy Offset
Up to 100%
energy offset for restroom dispensers — no grid draw required
Zero
Battery replacements — ever. Capacitor-based storage has no consumable parts.
Any
Commercial lighting type supported — LED, fluorescent, HID, and more.
$0
Added to your electric bill. Dispensers draw from harvested light, not the grid.
≤15 min
Per-fixture install. No downtime, no ceiling work, no operational disruption.
Services & Products
Ways we work with your building.
All ServicesInstallation
Full-building PV collector and capacitor installation. We handle everything — from energy audit to commissioning.
Maintenance Contracts
Ongoing monitoring, performance reporting, and hardware servicing under a fixed annual service agreement.
PV Hardware
Our indoor photovoltaic collector hardware, available for direct purchase or as part of a complete installation package.
IP Licensing
License our light-harvesting IP for integration into your own product line or OEM dispenser hardware.
Case Studies
Buildings we've powered.
Office Tower
24 floors · 48 restrooms
Hospital Campus
6 buildings · 200+ dispensers
Retail Mall
3 levels · 18 public restrooms
Get Started
Request a free site assessment.
We'll walk your building, map your fixtures, and deliver a no-obligation energy offset report — usually within 48 hours.