Skip to product information
1 of 7

Cooling Credits: Subscription

Save 90% and offset the effects of your carbon emissions for the long-term.
30 Cooling Credits / Month.
Subscription

Cooling Credit

Cooling Credit

You are offsetting the warming effect of 1 ton of carbon dioxide for 1 year!

Cool the Planet, One Credit at a Time

Inspired by nature’s cooling wonders, like volcanic eruptions, our balloons carry a precisely measured amounts of a naturally occurring substance into the stratosphere—think of it as sunscreen for the Earth!

What’s a Cooling Credit?
One Cooling Credit offsets the warming effect of 1 ton of CO₂ for an entire year. To put that into perspective, the average American generates 16 tons of CO₂ annually.

How It Works:
Your purchase funds the release of at least 1 gram of reflective particles ("clouds") into the stratosphere. After deployment, you'll receive a detailed confirmation email with video of exact location, time, date, and serial number(s) of your Cooling Credits, as well as the release altitude.

Why over 770 people have chosen us to cool Earth:

  • Transparent: Track your Cooling Credits on your account page.
  • Flexible: Refunds available anytime before deployment.
  • Fast: Current median fulfillment time is 30 days and 8 hours.

Bulk Options for Companies:
Offsetting over 1,000 tons of CO₂? Simply enter your desired quantity of Cooling Credits, and we’ll automatically apply a discount.

Questions? Schedule a quick chat with us here.

How our balloons work

We currently use biodegradable latex balloons filled with hydrogen gas and sulfur dioxide (SO₂) to create reflective clouds in the stratosphere. Here’s how it works:


Balloon setup:

The amount of hydrogen gas is calculated based on the balloon size, payload weight, and the desired burst altitude. Our goal is to release the reflective cloud above 20 km (66,000 ft) in the stratosphere. A calculator helps ensure precise measurements.


Ascent and release:

After launch, the balloon expands as it rises, due to decreasing air pressure, and eventually bursts. If the payload bursts above 66,000 ft, we issue Cooling Credits. If telemetry does not confirm stratospheric deployment, we re-deploy as needed.


Recovery and data collection:

Once the balloon bursts, a parachute deploys to gently return the payload to the ground. The payload includes instruments to recover the balloon and collect important data about the deployment. A typical flight lasts 3–5 hours.

View full details
Why others have joined cooling Earth
  • We should obviously be doing solar geoengineering. We are on track to radically reduce emissions in the coming years but thermal damage will lag our course correction so most of our climate pain is still ahead of us. Why risk destabilizing the West Antarctic ice sheet or melting the arctic permafrost or wet bulbing a hundred million people to death? Solar geoengineering can incrementally and reversibly buy down the risk during this knife-edge transition to a better future. We owe future generations to take all practical steps to dodge avoidable catastrophic and lasting damage to our planet.

    Casey Handmer, PhD from Caltech
  • It’s a small way I can help with a seemly very large problem! For what it’s worth, $200 offset 20 tons of CO2 is a great win!

    Brian Vallelunga, CEO of Doppler
  • At some point, you learn about reflective particles as a potential cooling method. The next question would be: 'Is anyone doing this now?' This led to the discovery of Make Sunsets, a team that not only explores solar radiation management techniques but also works to implement them. It's incredibly reassuring to see a group like Make Sunsets pushing the boundaries of scientific research, aiming to create a cooler, more sustainable future for everyone.

    Kevin S. Thompson, Austin, Texas