Products – Frequently Asked Questions

Where is PV Ultra designed and manufactured?

RayGen is an Australian manufacturer with local and international suppliers. RayGen’s design engineering, control, sales and support teams are based in Blackburn, Melbourne, Australia, along with RayGen’s manufacturing team.


Can I scale this technology down for a household or small business?

The technology is not suited to home applications – the minimum project size is over 200kW. A standard household application is roughly 2kW, about 1% of our smallest installation.

If you are interested in using the technology for domestic purposes you could consider a communal solar project. One of our systems can easily power a small community or groups of businesses.


How does PV Ultra compare with Silicon PV on price?

RayGen’s PV Ultra is already cost-competitive with Silicon PV on behind-the-meter projects for large commercial and industrial customers.

A significant point of difference, and therefore an advantage, of PV Ultra is that it produces heat as a by-product. This lets an operator offset heating requirements, or use multi-effect distillation desalination, to create fresh, potable water. Used in this way, PV Ultra delivers a higher Internal Rate of Return (IRR) and a faster pay-back period.

PV Ultra will be cost-competitive with Silicon PV for large scale (>100MW) utility applications in the near term. RayGen’s product roadmap, including design engineering and volume pricing, will see PV Ultra exceed Silicon PV’s cost reduction capability, with far fewer projects installed.


How should I read ‘1MWe’? Does that include or exclude heat?

1MWe is the AC electrical generation capacity for the system (measured under IEC Standard Test Conditions). A 1MWe system has at least 2MWth of heat generation capacity, which can be used for a variety of purposes. Further detail can be found in the Product Data Sheets.


What is the temperature of the heat?

The temperature of the heat depends on the inlet coolant temperature and site applications. 50°C is standard, though higher temperatures (up to 110°C) are available.


Do you have any operating sites I can visit?

Yes. We have three pilot sites: two in Victoria, and another Zhuo Zhou, China. Due to working requirement for these sites, only a limited number of prospective customers can visit each year. To arrange a visit, please contact a RayGen sales representative via the Contact Page.


Do RayGen’s towers require a significant amount of water?

No. RayGen uses a closed loop heat management system and does not use evaporative cooling. This means that no water is lost during operation. Just as with conventional PVs, the equipment does need to be washed from time to time to ensure maximum efficiency. However, with half the collector area of a typical PV, RayGen’s water requirements are less. Furthermore, RayGen is investigating ways to use natural rainwater and dew to clean the heliostats during operation.