The Anonymous Widower

Australia’s New Community Solar, Solar-Storage, ‘Solar Hydro’ And Solar Hydrogen Projects

The title of this post is the same as that of this article on Energy Storage News.

This is the introductory paragraph.

In the past couple of weeks, national and state government organisations in Australia have announced various stages of consideration for solar projects with a range of advanced and innovative storage solutions attached.

The article then goes on to describe some projects.

RayGen’s PV Ultra System

This paragraph describes the PV Ultra system.

The fully dispatchable power plant would use RayGen’s own technology PV Ultra, which is a combination of photovoltaic (PV) solar generation with the more expensive and engineering-intensive concentrated solar technology using angled mirror towers (heliostats). The PV Ultra system would generate both electricity and heat.

It’s obviously using what Australia has a lot of; sun to advantage.

RayGen’s Innovative Thermal Storage

This paragraph outlines the principle of RayGen’s thermal method of storage.

This generation technology would in turn be co-located and connected to a ‘Thermal Hydro’ energy storage facility, with 17 hours of storage, which again is based on a technology RayGen is developing. Unlike pumped hydro energy storage which uses two reservoirs at different heights, relying on gravity to drive turbines, the Thermal Hydro plant would use a hot reservoir and a cold reservoir, linked together.

The principle of operation is described in this second paragraph.

The PV Ultra solution will therefore cool one reservoir using photovoltaic power and grid power when needed, while also heating the other reservoir using the heliostats. The difference in temperature would then generate electricity, via an Organic Rankine Cycle engine, a device which uses thermodynamic cycles to convert steam into mechanical energy and is widely used for biomass, waste incinerators and other existing generation types.

The article states that an Organic Rankine cycle engine has an efficiency of about seventy percent. I have linked to Wikipedia, which gives a good explanation of the Organic Rankine cycle, which is typically used in waste heat recovery and biomass power plants.

RayGen’s Flagship Project

RayGen’s flagship project will be rated at 4 MW, with a storage capacity of 50 MWh. It will be used to provide power in the West Murray region.

 

New South Wales Community Projects

The article then describes a group of community projects that are being set up in New South Wales.

This is the introductory paragraph

Elsewhere in Australia, the government of New South Wales approved grants earlier this month to assist the development of seven solar projects, all but one of which will include energy storage. Notably, five out of the seven will also be community distributed energy projects, including one standalone shared battery energy storage site.

Some points from the article include.

  • The total solar power is rated at 17.2 MW.
  • The energy storage is rated at 39.2 MWh
  • One site is co-located with hydrogen electrolysis and storage,

New South Wales has certainly launched an ambitious plan.

Conclusion

I like RayGen’s system and the New South Wales initiative.

I also think, that both projects could find applications in some of the hotter places in the world.

Could solar power systems like these solve power supply problems in Africa, India and other sun-rich places>

 

 

March 26, 2020 - Posted by | Energy, Energy Storage, Hydrogen | , ,

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