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Can you imagine getting electrical power from balloons? This is what Cool Earth of Livermore, California, has designed the next generation of solar collectors to look like. The basic concept hasn’t changed; convert sunlight into electric power using solar cells; but the packaging has changed, and this is where the solar balloons are unique.

The current installed solar plants use flat-panels. Each panel is heavy, large, easily damaged, and costly to repair. This means the cost to produce a watt of electricity is 5-7 times greater than using natural gas and is not a feasible alternative to fossil fuels. This is no longer true with the Cool Earth solar balloon system.

One side of the balloon is made from reflective silver Mylar plastic. The other half is transparent to allow in sunlight. The silver material is parabolic-shaped to concentrate the sunlight on to a single point to achieve maximum light concentration. This is why high performance solar cells are used.

The orb’s design will concentrate the sunlight 300 to 400 times better than traditional roof mounted solar panels. By design, this reduces the cost of each balloon and greatly increases electrical output per cubic inch of solar cell material. This means that the cost of the electricity produced will be on par with current natural gas power plants.

The orb has a simple circular metal frame that is used to hold the Mylar in the proper shape. An arm extends from the ring to the top center of the orb. This holds the solar cells that produce the electricity at the proper focal point. The shape of the balloon and consequently the focal point is altered by adjusting the internal air pressure.

Like all solar designs, the system will not be used as a base power plant because the energy collected during the day cannot be economically stored for nighttime operations. On the other hand, the system will be an ideal “peaker” power plant to be used during the hot summer months when energy demands are high.

Another of the aspects we find most interesting at Green Products is how the balloons are linked together with wire, wood and sheet metal. We are also impressed at the lack of limitations that are imposed when the systems are installed and how they eliminate the destructive heat that destroys most solar cells. Soon this system will be installed and go online. Check it out.

Michael

You would not believe what we at Green Products found (and no they are not UFOs). Can you imagine a field planted with silver balloons as far as the eye can see, or a hillside covered with silver balls? It’s not Christo’s latest pop-art install, but rather, a solar farm. This is what Cool Earth out of Livermore, California envisions in the very near future. The solar collection concept is not new, but the concentrator is different from anything seen before on any renewable energy product.

The cost to install and maintain the current flat-panel solar cell design is prohibiting its large scale adoption. The glass cover is easily damaged by windstorms, hailstorms or vandalism. When this happens, it leaves the solar array exposed to the elements where they can be damaged. The unique balloon design by Cool Earth eliminates many of these shortcomings.

One side of the balloon is made from reflective silver Mylar plastic. The other half is transparent to allow in sunlight. The silver material is parabolic-shaped to concentrate the sunlight on to a single point to achieve maximum light concentration. This is why high performance solar cells are used.

The orb’s design will concentrate the sunlight 300 to 400 times better than traditional roof mounted solar panels. By design, this reduces the cost of each balloon and greatly increases electrical output per cubic inch of solar cell material. This means that the cost of the electricity produced will be on par with current natural gas power plants.

Each balloon is eight feet in diameter and can withstand over 100 mile per hour winds. The balloons are linked together in series, with the initial installation able to produce 10 megawatts, enough to power 3,500 homes during the day.

One of the areas under consideration is the need to add more peaking power plants, also known as peaker plants. A peaker plant is operational only when demand for electricity is at the greatest, like during the hot summer months. This green product could be used to eliminate rolling brown outages that we have encountered in the past few years.

Another of the aspects we find most interesting at Green Products is how the balloons are linked together with wire, wood and sheet metal. We are also impressed at the lack of limitations that are imposed when the systems are installed and how they eliminate the destructive heat that destroys most solar cells. Soon this system will be installed and go online. Check it out.

Michael

At Green Products, we have come across a product from Cool Earth: Solar Balloons. Cool Earth was created with the mandate of producing electricity using solar power, specifically solar cells. Solar power is not a new concept, but how the sunlight is collected and concentrated is truly unique.

One of the areas of concern with the current flat-panel solar design is cost. Flat-panel designs require metal cases, rigid mounting hardware, heavy glass and large amounts of cell material. The cost per watt for solar panels is generally 5 to 7 times greater than conventional power plants. This is no longer true with the solar balloon system.

The system’s design is centered on the concept of an air-filled Mylar balloon like a children’s birthday balloon. One half of the balloon is a highly reflective mirror-like surface and the other half is transparent. The solar cell is located at the center of the clear side allowing sunlight to pass by, be collected and focused back onto the solar cell.

This unique design can concentrate the sunlight so well, it produces 300 to 400 times more power per square inch of solar cells than traditional flat-panel solar systems. By regulating the air pressure inside the balloon, they can focus the concentrated sunlight directly on the photocell. The air regulating system is designed to maintain the proper balloon size as the outside air temperature increases or decreases.

Each balloon is eight feet in diameter and can withstand over 100 mile per hour winds. The balloons are linked together in series, with the initial installation able to produce 10 megawatts, enough to power 3,500 homes during the day.

One of the areas under consideration is the need to add more peaking power plants, also known as peaker plants. A peaker plant is operational only when demand for electricity is at the greatest, like during the hot summer months. This green product could be used to eliminate rolling brown outages that we have encountered in the past few years.

Some of the more interesting aspects of this solar power station are how simple the design is and how multiples are pulled together to produce a solar power plant. Check it out.

Michael