The secret to an efficient, sustainable future is concentrating heat.
Some ingredients are essential to a recipe, but adding a pinch of innovation to solar power could make it a thousand times better.
Experimentation is also key to dishing up something entirely new and worthwhile, even in the scientific and renewable energy world.
But will turning up the heat help transform the use of solar, or will the industry end up getting burned?
How conventional solar is “dying on the pass”
The first thing that comes to mind when thinking of the global energy transition is solar power.
For years, this renewable energy source was seen as the “chef’s choice” on the menu.
Worldwide, tinted silicon-based panels are serving many households, businesses, and communities.
But, traditional solar designs are like exceptional dishes that “sit too long in the window.” Solar panels lose substantial amounts of energy as heat, which inevitably lowers power output efficiency.
This means by the time the energy reaches the customer, it no longer has its peak quality.
For heavy industries, such as mining and commercial agriculture, these “dishes” are too bland.
As global needs evolve, these hard-to-abate industries desire something with more kick.
Several sectors are embracing the age of digitization, which means “higher quality meals” are non-negotiable.
But what secret ingredient would suffice to make solar the just desserts?
Experimenting with various ingredients to improve solar quality
Energy-efficient data centers are pivotal when it comes to the hunger of the digital age and smart technologies.
But there is only so much space for additional solar capacity. This is why experts are exploring ways to improve solar cell efficiency, which hopefully lessens the need for additional installations.
A research team at Germany’s Fraunhofer believes future photovoltaics will be dished with 50% efficiencies.
This is, of course, the theoretical limit of solar cells, and multi-junction photovoltaic cells will be central to achieving it.
But not everyone is convinced that “layering the flavors” to squeeze every ounce of energy is the secret.
Even the most efficient solar cell designs face heat-loss issues.
So, something else must be cooked up to meet these high demands.
Fortunately, scientists from the University of South Australia may have discovered how to satisfy the palate of the heavy industry.
Reflecting on the Australian choice of a secret solar ingredient
The secret to sustainable success is using pure concentrated power instead of solar panels. However, the Australian scientists kicked it up a notch.
In their experimentation using a first-of-its-kind “demonstrator,” the scientists opted for a more humble choice. Instead of using expensive and heavy glass for the mirrors, they used specialized plastic.
Not only are these mirrors more affordable and lightweight, but they also concentrate substantial solar energy onto a tiny receiver.
This Concentrated Solar Thermal (CST) technology spiced things up by:
- Achieving a temperature of 754°F
- Generating high-pressure steam for commercial agricultural drying and mineral processing
- Making production and remote deployment simpler and more cost-effective
Pairing extreme heat with thermal storage
Nothing pairs as well with extreme heat like a thermal energy storage system.
This transforms it all into a “heat battery.” The captured heat is stored in a medium and can be converted to power at any given time, 24/7.
This solar-thermal demonstrator proves that raw heat does not have to be a waste.
By concentrating heat, solar energy can finally be dished up as a main course to ensure high-quality power.
Now, the extreme hunger of even the hard-to-abate industries can be satisfied, all while keeping a low carbon footprint.
The fact that the unique experience of concentrated solar thermal plants is no longer deemed as “gourmet” takes the cake.
