A Powerwall delivery truck flipped. No fire. No smoke. Seemed safe.

They tossed those Powerwalls into a landfill. Four days later—explosion!

That incident didn’t just make headlines; it changed Tesla’s fire strategy. In this Tactical Tuesday, retired Battalion Chief Kathleen McCaffery explains how that one mistake led Tesla to create a Global Fire Liaison role—and why every developer, EPC, and AHJ should borrow the playbook.

Kathleen walks through the real science of lithium-ion incidents and the simple operational changes that stop projects from turning into disasters. It’s short, practical, and built for people who build.

This episode is a rare peek behind the curtain of Tesla Energy’s fire safety strategy—and a must-listen for developers, installers, and fire safety professionals building battery storage projects in 2025 and beyond.

You’ll learn:

🔹 Why lithium-ion fires can reignite days later (delayed thermal runaway)

🔹 Why the old rule “big fire, big water” fails—and what to do instead

🔹 How misting/cooling tactics cut water use and cleanup time

🔹 What Tesla got right (and what most companies still get wrong)

🔹 A real-world miss that destroyed a facility—and how to prevent it

From Australia’s mega sites to small-town stations, Kathleen’s job was to bridge battery tech and fire ops. Steal the lessons—and save yourself time, money, and a lot of risk.

Quick Links / Timestamps (16:00)

00:00 Landfill explosion: what really happened

01:33 Why Tesla built a Global Fire Liaison

04:05 “I thought I’d seen it all”—the hazmat wake-up call

07:37 Global pushback on EVs/BESS & how training changed it

10:16 Fire Triangle: why lithium-ion “creates its own oxygen”

12:55 Misting > Big water (cooling beats smothering)

13:52 Dev mistake that drives Kathleen nuts (and the fix)

PSA: If you build solar + storage, share this with your safety lead and your local fire chief. Then listen to the full episode for the deeper playbook.

Are there other technologies you’ve scouted on the frontlines of the Clean Energy Revolution that you think we should be covering here on SunCast?

Hit us up - [email protected] with your feedback & recommendations.

Check out OpenSolar OS 3.0 at: https://suncast.media/opensolar

If you want to connect with today's guest, you’ll find links to their contact info in the show notes on the blog at https://suncast.media/episodes/.

Our Platinum Presenting Sponsor for SunCast is CPS America!

SunCast is also sponsored by Nextpower!

You can learn more about all the sponsors who help make this show free for you at www.suncast.media/sponsors.

Remember, you can always find resources, learn more about today’s guest and explore recommendations, book links, and more than 875 other founder stories and startup advice at www.suncast.media.

Subscribe to Valence, our weekly LinkedIn Newsletter, and learn the elements of compelling storytelling: https://www.linkedin.com/newsletters/valence-content-that-connects-7145928995363049472/

You can connect with me, Nico Johnson, on:

Twitter - https://www.twitter.com/nicomeo

LinkedIn - https://www.linkedin.com/in/nickalus