Powerwall firmware versions reported by Netzero app users active within the past 7 days.

Powerwall 3

Latest version seen:   26.2.1 a7456b0a

Version	PW3 %	First seen
25.42.1 ab1ab81d	59.6%	Nov 17, 2025
25.42.2 142a27a1	17.9%	Dec 17, 2025
26.2.1 a7456b0a	12.0%	Feb 12, 2026
25.42.1-c 8664858e	3.5%	Dec 18, 2025
25.34.3 82272c3b	2.8%	Oct 17, 2025
24.28.202 cc45f87b	0.8%	Mar 12, 2025
25.34.1 7e37ef9d	0.8%	Oct 03, 2025
26.2.0 87adb89e	0.7%	Jan 23, 2026
25.42.2-rg 9c23df29	0.4%	Jan 14, 2026
25.26.1 2c4bb00e	0.3%	Aug 06, 2025
Others	1.1%

Powerwall 2

Latest version seen:   26.2.0 87adb89e

Version	PW2 %	First seen
26.2.0 87adb89e	62.2%	Jan 23, 2026
25.42.1 1d1ff4c6	34.1%	Nov 19, 2025
25.42.1-n dd1e8c1d	0.9%	Dec 22, 2025
25.34.1 930a7700	0.5%	Sep 17, 2025
23.36.3 aa269d35	0.2%	Sep 04, 2023
Others	2.0%

The firmware version number follows a calendar-based scheme: the first part represents the year, and the second part indicates the week number of the major release. For example, version 25.42 corresponds to the year 2025 and the 42nd week starting October 13, 2025. Since 2023, Tesla has consistently released a new major version every 8 weeks. The third part of the version (e.g. 25.42.1) represents a revision or incremental update, which may be released more frequently.

Data last updated: 2026-02-21