• Cool Earth Solar

    reshaping solar energy

solar for today

About Us

solar for tomorrow
Cool Earth Solar develops and builds solar power plants that are clean, renewable, and good for the planet!

We accomplish this in two ways.

Solar Power Plants

We install solar at commercial and industrial sites, which are ideally suited for solar given their large energy use and expansive roofs. We also develop large ground mount solar power plants at farms/ranches or for connection to the Utility Grid. Please see our project page for more information!

Our CPV Product

We are developing a new CPV solar technology, which is reshaping solar, literally and philosophically. Our unique concentrated-photovoltaic (CPV) technology is designed to "tread lightly" on the landscape and to deliver solar power at a low cost to the environment and in dollars and cents. We have already deployed this new technology at Sandia National Lab, and we plan to develop more solar projects with our cool technology!

why cool earth?

we believe everyone should have affordable and abundant energy from a clean renewable source

what we do

Solar Services

that our customers love
We provide a full turnkey solar project for our customers. We perform a complete package of project services, including site survey, financial analysis, engineering and design, permitting, procurement, construction, utility interconnection, start-up and commissioning, plant monitoring, and on-going operation and maintenance.


We only use the best solar equipment available on the market for our solar projects. We proudly use Solar Frontier and SunPower solar modules.

Engineering and Design

All engineering and design services are performed by professional licensed engineers. Electrical Engineering is at the heart of our solar power plants, and it is performed 100% by the Cool Earth team.

Quality Construction

We take pride in our construction projects. Quality construction work delivers a solar plant that performs well and lasts for over 25 years. All construction work is performed by the Cool Earth team of professionals.

Monitoring and O&M

Once a significant investment has been made to install a solar plant, it is important to monitor it's performance and validate the significant financial benefits. Proper operation and maintenance insures reliable production and long life of a solar plant.

what is sustainability?

balancing local and global efforts to meet basic human needs without destroying or degrading the natural environment

let us build

Solar Power Plants

just for you
We are so proud of the solar projects that we have built for our customers! Please let us show off a few

cool facts about solar

see what we have developed

CPV Product

renewable. clean. efficient.
Our cool technology is "reshaping solar energy" in a very literal way: Most of today's solar energy systems take the form of flat panels or heavy mirrors or metal boxes-with-lenses and require significant amounts of heavy, expensive materials. Our inflated solar concentrators, on the other hand, are primarily made of inexpensive and free materials. This design approach radically reduces material requirements as well cost and time.

Our Inflated Solar Concentrator

Solar Concentrators Focus the Sun. Our inflated, tube-shaped concentrators are key to Cool Earth's innovative design. Each 3 foot diameter concentrator is made of plastic film - similar to that used commercially for packaging and shipping. When inflated with air, the concentrator naturally forms a shape that focuses or concentrates sunlight onto a PV cell placed at the focal point. This means we need fewer solar cells and other more expensive materials to produce a lot more electricity. In fact, a single cell in our concentrator generates up to 30 times the electricity of a solar cell without a concentrator.

The inflated structure is naturally strong—strong enough to support a person's weight—and aerodynamically stable, able to withstand high wind speeds. Finally, the inflated tube protects the PV cell and receiver from the environment, including rain and snow, as well as insects and dirt.

Each inflated concentrator includes, in addition to the solar cell receiver, a small air pump for maintaining air pressure and a simple heat sink to handle the concentrated energy from the sun.

A Support System Holds It All in Place.

The concentrators are so light and aerodynamic that they require a equally light weight and inexpensive supporting structure and solar tracker. The resulting system uses a minimum amount of material, has a small footprint, and causes the least disruption to the natural environment of any solar power plant.

…And, That's It!

All in all, a simple, elegant and cool solution.


Our system works like a conventional concentrated photovoltaic cell (CPV) system, but we take an unconventional approach to forming our ultralight optics and tracking the sun. Instead of using rigid aluminum or glass structures to focus light, we use very thin plastic films. And, instead of using ribs, trusswork, or material heft to maintain the optic concentrator shape, we use active inflation of air. Our concentrators are firmly attached to our own proprietary tracking system to track the daily and seasonal passage of the Sun.
Serendipitously, inflation air allows us to make an effective concentrator from nothing but thin plastic films. The inflated structure is lightweight, strong enough to survive high winds, and designed so the concentrator can produce electricity in winds up to 40 mph. We optimize the optical properties of the concentrator by actively controlling its inflation. The inflated tube also forms a protective barrier around our PV receivers and cells.
The amount of electricity generated by our systems is already highly correlated to peak electric demand load. This means the electricity is available when it is needed the most and is, therefore, immediately used, so storage is not often an issue. Taking a larger view, solar presently serves less than 1 percent of the world's energy needs. Solar needs to be serving well over 50 percent of the world's needs before storage is a significant global concern.
Our system is designed to only be installed on the ground. We are currently in the prototype and pilot plant stages, but after our system is fully certified, we plan to make it available for commercial and industrial use.

cool earth solar community


number of XL pizzas consumed at cool earth's 8th birthday party


number of people we talk to about going solar each year

our team is awesome

Our Management Team

here are just a few of them
Cool Earth Solar is powered by a team of highly motivated individuals with deep skill sets, a team of problem solvers focused on implementing a new and better solution to one of the world's most pressing challenges: the energy crisis. Together, we are dedicated to developing improved solar technologies and building a better designed solar power plant that will make solar energy the competitive cost choice against traditional fossil fuels.

Rob Lamkin


Jacques Belanger, PhD

Co-founder/Vice President Technology

Tony Chen, MBA

Vice President, Business Development

Jim Tietz, PhD

Vice President, Products
Please follow us in the news.


Timeline Post News
We like to promote solar, our customers, and a clean environment.
  1. One of the 108 new LED light panels installed at Toyota Vallejo can be seen above the main entrance. The new lights plus new solar panels installed on the business’ roof are lowering energy costs for the car dealership.
  2. Cool Earth Solar was featured by solar module manufacturer Solar Frontier in it's recent news report.
  3. On Wednesday August 13th, US Congressman Eric Swalwell and Cool Earth Solar president Rob Lamkin were on hand to help All American Label owner Brad Brown dedicate a Cool Earth Solar PV installation at a ribbon-cutting ceremony at All American Label headquarters in Dublin, California.
  4. High quality of life, lower rents, and a brilliant workforce are luring start-ups to the east bay. Meet the fearless pioneers who are staking their claim.
  5. Solar Balloons: Future of Alternative Energy?

cool earth solar in the news



2174 Rheem Dr, Pleasanton, CA, 94588
(925) 223-8547
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