How Conventional Photovoltaic Technology Works
Photovoltaic technology aims the solar panel at the sun to collect light. That light excites electrons within the photovoltaic cell materials, which releases energy in the form of electricity and heat. Unfortunately, upwards of 80% of t0he released energy is wasted heat.

Today less than 1% of the U.S. electricity needs are generated by photovoltaic technology. So the lingering question is, "Why hasn't conventional photovoltaic become the major electricity production method?" There are a couple of major reasons:

1. PV only converts 10-25% of the sun's light into electricity
2. PV is expensive and can only generate power during daylight (half the time of geothermal)

There are also some caveats to conventional photovoltaic energy:

• Can only be used during part of the day
• Is highly dependent on clear weather— cloudy/rainy weather significantly reduces output
• Isn't capable of providing its rated supply during peak demand from 4:00-7:00 p.m.

The Solution
Our scientists took a look at these problems with a fresh eye and came up with some very clear objectives when devising an alternative:

• Reduce the cost of the technology by increasing power output performance significantly
• Create a system that is less weather-dependent
• Provide a flexible system that can be adapted and utilized worldwide

Introducing PhotoThermoVoltaic (PTV™) Technology by Berken Energy
We've solved these problems and created a patent-pending technological breakthrough that utilizes the wasted heat that conventional PV solar cells miss—by doing so we significantly gain electrical output. The thermal component of the system retains heat and continues to generate electricity even after the sun goes down.

• PTV™ produces electricity — maximizing output later in the day during peak demand times — even after the sun goes down
• Utilizes cutting-edge technology that combines PV and thermal characteristics
• Less cost per watt
• Less space per watt
• Less sensitive to clouds, hot weather, partial shading

• More Watts per $ spent — recognized ROI
• More Watt per square foot
• Designed to "Match" peak consumer energy requirements
• Integrates with anyone else's PV and increases efficiency
• Compatible with concentrator or flat plate systems
• Lower Total facility maintenance costs
• Multiple follow-on applications
• Collection Device does not need to be flat or face the sun
• Far Less Acreage needed

• Reduced Cost by Increasing Output Significantly
• System is Less Weather-Dependent
• Flexible System that can be Adopted Worldwide
• PTV™ produces electricity at Peak Demand times (without sun)
• Increases Electrical Output by 200%