Exeger manufactures Powerfoyle™, a flexible, dye‑sensitized solar cell that converts any ambient light into electrical power for low‑power consumer electronics, IoT devices, and smart‑home products. The thin, customizable panels can be integrated into a variety of form factors, replacing or augmenting batteries to reduce maintenance costs, waste, and design constraints.
Funding
$38.4M raised to dateRaised to date based on public sources. This may differ from the amount the company actually raised and is based only on what is publicly available on the internet.

EIFounders
Product
Problem
Many consumer electronics, IoT devices, and smart‑home products rely on disposable or rechargeable batteries, creating ongoing maintenance costs, environmental waste, and design limitations, especially for low‑power or hard‑to‑access installations.
Solution
Exeger provides Powerfoyle™, a flexible, dye‑sensitized solar cell that converts any ambient light—indoor or outdoor—into electrical power. The cell’s patented low‑resistance conducting layer enables large, thin panels without traditional current collectors, allowing seamless integration into a wide range of product form factors. By tailoring dye and electrolyte formulations, Powerfoyle can be optimized for specific lighting conditions, delivering reliable energy even under partial shading. Its screen‑printing and texture‑printing processes let manufacturers match the cell’s appearance to brand aesthetics, from leather‑like finishes to printed logos, without sacrificing performance. The technology is produced in renewable‑energy‑powered factories, yielding a non‑toxic, durable power source that can replace or augment batteries, extending device life and reducing waste.
Target Audience
Primary customers are manufacturers of consumer electronics, IoT sensors, smart‑home accessories, wearables, and professional equipment (e.g., hearing protectors, remote controls) seeking battery‑free or self‑charging solutions that maintain brand design standards.
Features
- Flexible, thin (as low as 1.3 mm) solar cells that can conform to curved surfaces and be cut to any size from 15 cm² to 500 cm²
- High efficiency in both indoor and outdoor light, with performance unaffected by partial shading
- Fully customizable surface textures (leather, brushed steel, carbon fiber, fabric, wood, etc.) and direct graphic/logo printing via screen, tampo, or UV spot methods
- Patented low‑resistance conducting layer eliminates the need for silver lines or separate current collectors, enabling larger cells with higher power density
- Two optimized variants (Powerfoyle Indoor and Powerfoyle Hybrid) for low‑light environments and mixed lighting conditions
- Durable construction tested for long‑term wear, suitable for everyday consumer products and rugged IoT deployments
- Seamless integration support, including feasibility studies, mass‑production engineering, and design collaboration with partners