DENSE ACCUMULATED POWER ELECTROMAGNETIC RADIATION (DAPER)
Capture the sun.Transmit energy anywhere
PERA-Fiber is pioneering a new class of optical energy infrastructure that captures solar irradiance at source and transports it over long distances as directly usable light and thermal energy.
86.5%
Transmission efficiency
For distances below 500 km; 85.5% above 500 km
>85%
Solar spectrum captured
Including diffuse and indirect sunlight
TRL 4
Scalable lab prototype
Demonstrated at the Fraunhofer Institute, Germany
82/100
Independent feasibility score
Third-party due diligence assessment
The constraint
Renewable energy is abundant,
but access to it is not
Traditional solar generation remains tied to the location, timing and intensity of incident sunlight. Large-scale deployment also depends on land, storage, transmission capacity and lengthy grid interconnection processes.
Illustrative · not to scale
The solution
Sunlight, carried like data.
PERA-Fiber turns solar irradiance into a transportable optical stream. Instead of converting sunlight into electricity where it lands and forcing it through congested grids, the energy stays as light — guided through engineered fibre to the place, and the format, where it is actually needed.
Nanostructured optical surfaces are designed to collect more than 85% of the incident solar spectrum, including wavelengths conventional photovoltaics discard.
Energy travels as photons inside the fibre — not as electrons through copper — with projected transmission efficiency of 86.5% below 500 km.
At the destination, light becomes whatever the process needs: high-temperature industrial heat, electricity, hydrogen or thermal storage.
One infrastructure that moves energy the way light already moves: fast, dense and direction free.
Validated in the laboratory
Demonstrated at the Fraunhofer Institute.
The PERA-Fiber propagation concept is not theoretical. It has been experimentally validated in a laboratory setting at the Fraunhofer Institute in Germany, progressing from a first experimental setup to a scalable cable prototype and reaching Technology Readiness Level 4.
- 2011
The principle proven. At the Fraunhofer Institute, the PERA-Fiber propagation concept was modelled and experimentally validated for the first time — confirming that sunlight could be guided through a dielectric structure rather than a conventional conductor.
- 2013–2014
The first physical fiber. Fraunhofer fabricated the first laboratory-scale PERA-Fiber cable and measured photon entry, confinement and propagation in hardware — moving the concept from simulation to a tangible, working fiber.
- 2022
An optimised prototype. A refined second-generation fiber was produced with measurably better light confinement and stability — the prototype that established Technology Readiness Level 4.
- 2025–2026
Ready to scale. Laboratory validation was completed with final measurements and an industrial manufacturing design, clearing the way for the move from laboratory prototype to semi-industrial pilot.
Values demonstrated at laboratory scale. Industrial performance figures depend on pilot validation.
The programme
Explore PERA-Fiber
- 01
Technology
Nanostructured optical conduits designed to capture, accumulate and transmit solar irradiance as usable light and heat.
- 02
Applications
Industrial heat, remote delivery and tailored conversion — light becomes the energy format each system needs.
- 03
Science
Rooted in complexity science, built through photonics and advanced materials research at PERA Complexity.