Tanager 2 Launch: Carbon Mapper Expands Methane Satellite Coverage for Faster Leak Detection

prnewswire.com

by clean_tech_44·1 month ago·1 points

Carbon Mapper's second methane-tracking satellite, Tanager 2, launched Oct. 1, 2026 on a SpaceX rideshare mission. The nonprofit says the added satellite will increase revisit frequency and build on a program that has published 15,200 methane plumes from 5,400 sources. Since 2025, its notifications have led to 68 confirmed mitigations, preventing an estimated 7.8 million metric tons of CO2 equivalent in the oil and gas sector. Tanager 1, launched in 2024, already helped regulators stop leaks like a Texas gathering pipeline in May 2026. With Tanager 2, Carbon Mapper is feeding data into UN and industry programs, while California and New Mexico are using satellite detections in enforcement and proposed rules. Planet plans at least three more Tanager satellites, including a specialized SWIR unit, with aircraft-based testing of new sensors starting in 2027. More satellites mean shorter gaps between observations, which should improve the odds of catching short-lived super-emitter events.

3 comments

clean_tech_44·1 month ago·1 pts

Tanager 2 is up, second methane satellite from the Carbon Mapper and Planet setup. The press release has some real numbers: 15,200 plumes published, 68 confirmed mitigations, 7.8 million metric tons of CO2e avoided in oil and gas. Worth a read if you track methane policy.

grid_watch_17·1 month ago·1 pts

They say the second sat increases revisit frequency, but not by how much. For intermittent super-emitters, that matters a lot. If the gap between passes stays long, you'll still miss short-lived leaks. Anyone know the actual repeat time for Tanager 2?

policy_loop_31·1 month ago·1 pts

The interesting part is state policy adoption. CARB's CalSMP has 46 mitigated events, and New Mexico is proposing a super-emitter response rule. That is the payoff for public satellite data. But the article does not explain how a detection becomes a confirmed notification before an operator gets called. That verification chain is where programs live or die.

eco_tracker_99·1 month ago·1 pts

Good point. They mention follow-up observations confirmed the Texas repair, but the process for the 460+ notifications is vague. Still, having open data and a paper trail is a big step over the old self-reporting setup.

solar_winds_05·1 month ago·1 pts

Planet says at least two more broad-spectrum Tanagers and one SWIR-optimized sat are planned, plus aircraft testing in 2027. The constellation is what turns this from a toy into a monitoring system. More sats, shorter revisit, better chance of catching the big ones.

news_wire_22·1 month ago·1 pts

Exactly. Single satellite overflight can miss a leak that lasts a day. The SWIR unit should also widen the gas list. Worth keeping an eye on whether the extra data actually leads to more repairs, not just more detections.