Ask Mayfield Anything


Helping suppliers and end users understand what’s happening in solar and energy storage

Join Mayfield’s live webinar series featuring diverse perspectives and expert opinions on the most relevant topics in solar and energy storage. Ask Mayfield Anything attendees hear from various presenters in manufacturing, codemaking, project permitting, and fire safety.

During webinar planning and straight through live recordings, Mayfield accepts questions from attendees and blends them into the discussion. After each episode, attendees come away with a well-rounded understanding about industry best practices, product solutions, and technology trends.

Our Most Recent AMA

UL9540A Battery Testing: What it is…and is Not

June 26, 2024

As solar PV systems with energy storage become more common due to decreasing battery costs and ongoing grid reliability concerns, battery safety is paramount. UL 9540A is a key test method used to evaluate the fire safety risks associated with thermal runaway in battery systems.

In June’s Ask Mayfield Anything session titled “UL9540A Battery Testing: What it is…and is Not,” Ryan Mayfield was joined by Fire Test Specialist from the CSA Group, Josh Dinaburg and Energy Storage Specialist from Hiller Mike Nicholas to provide a deeper understanding of this new battery test. They cover various aspects, including how UL 9540A guides the installation of Energy Storage Systems (ESS) in close proximity, its limitations in truly simulating real-world fire scenarios, and the challenges faced by AHJs in accepting these test results due to certain criteria not being met.

Watch this informative session that will equip you with essential knowledge about UL 9540A and its implications. Additionally, gain insights into upcoming revisions and learn what questions to ask manufacturers.


Josh Dinaburg – Fire Test Specialist | CSA Group

Mike Nicholas – Energy Storage Specialist | Hiller

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Ryan Mayfield

Since 1999, founder Ryan Mayfield has been committed to raising the bar on renewable energy industry best practices.


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