About Planetary

Planetary removes carbon dioxide from the atmosphere safely, durably, efficiently, and at scale. Planetary has successfully delivered hundreds of verified removal tonnes to clients such as Stripe, Shopify, and British Airways.

How does Planetary do this? Using a process called Ocean Alkalinity Enhancement (OAE), Planetary restores coastal waters’ ability to absorb carbon dioxide through seawater restoration. Planetary partners with communities, regulators, industrial outfalls, and scientists to support marine ecosystems and reduce the impacts of ocean acidification through OAE.

Where does Planetary do this? Planetary integrates its technology into existing outfall locations, seamlessly removing carbon with common, pre-existing infrastructure— for example, wastewater treatment facilities and power plants. Planetary’s operational footprint can fit into two shipping containers and is set up in a matter of days. By design, our system integrates seamlessly into existing outfalls, making Planetary’s system incredibly efficient and simple to scale.

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Company Timeline

2000s

Dr. Greg Rau begins his research into Ocean Alkalinity Enhancement (OAE).

October 2019

Planetary Technologies (then Planetary Hydrogen) is founded.

January 2021

First customer, Shopify, commits to CDR partnership with Planetary.

2021

First studies begin, working with independent experts at Dalhousie University in Nova Scotia.

January 2022

UK government report is completed, highlighting sites in England best suited to OAE project development.

March 2022

Planetary closes its first round of pre-seed and seed funding, for a total of $7.8 million CAD.

April 2022

Planetary awarded XPRIZE Carbon Removal Milestone Award (one of only 15 entrants globally to win).

September 2022

First alkalinity added to the ocean, in an initial small-scale test of monitoring systems in Hayle, Cornwall, UK.

August 2023

MRV 3.0 published for review.

September 2023-Present

Dosing alkalinity for carbon removal in Nova Scotia

April 2025

Won XPRIZE’s XFACTOR award for ocean carbon removal

June 2025

Delivered world’s first verified Ocean Alkalinity Enhancement carbon removal credits to buyers Shopify, Stripe, and British Airways.