Our Solar Power Plant’s low cost, high efficiency solar-plus-storage system provides renewable electricity on demand at utility scale. Water-based storage allows energy to be stored for hours or days at a time with the efficiency of traditional pumped hydro, but with fewer siting limitations. It’s designed for use as grid scale electricity generation to replace coal and natural gas. It can also be used in micro and off-grid applications such as industrial operations or remote communities.



Low-Cost Renewable Energy Storage

Less than half the cost of batteries for 10 hours of storage


Ultra-high Efficiency

World record-breaking technology used in the system


Flexible & Efficient Siting

Siting anywhere that a traditional solar farm is feasible


Secure Grid Quality Power

Synchronous power generation with fast ramp time


Low Ecological Impact

Light footprint and near zero e-waste


No System Degradation

Full depth of discharge maintained for the system’s life of 30+ years

How it works


1. Focus Sunlight

A field of smart, self aligning mirrors concentrate sunlight onto a tower-mounted receiver containing an array of PV Ultra modules.


2. Convert To Electricity and Heat

RayGen’s PV Ultra modules convert sunlight to power with nearly 90% efficiency (one-third to electricity and two-thirds to heat) using high efficiency, actively cooled photovoltaics.


3. Capture Energy in Thermal Stores

Heat extracted from PV Ultra modules is stored as hot water in a thermally insulated reservoir, while electricity from PV Ultra or the grid is used to run a chiller to produce near freezing water in a second reservoir.


4. Generate Electricity On Demand

Stored hot and cold water drive an Organic Rankine Cycle engine (used for heat to power in the geothermal industry) to produce stable electricity on demand.

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