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ESS Tech, Inc. Uptime Monitor

Long-Duration Iron Flow Energy Storage Solutions

Operational All systems running normally
Last checked:

Last 30 Days Performance

Average Uptime

100%

Based on 30-day monitoring period

Average Response Time

189.2ms

Mean response time across all checks

Daily Status Overview

Hover for details
100.0% - Mar 27
100.0% - Mar 28
100.0% - Mar 29
100.0% - Mar 30
100.0% - Mar 31
100.0% - Apr 01
100.0% - Apr 02
100.0% - Apr 03
100.0% - Apr 04
100.0% - Apr 05
100.0% - Apr 06
100.0% - Apr 07
100.0% - Apr 08
100.0% - Apr 09
100.0% - Apr 10
100.0% - Apr 11
100.0% - Apr 12
100.0% - Apr 13
100.0% - Apr 14
100.0% - Apr 15
100.0% - Apr 16
100.0% - Apr 17
100.0% - Apr 18
100.0% - Apr 19
100.0% - Apr 20
100.0% - Apr 21
100.0% - Apr 22
100.0% - Apr 23
100.0% - Apr 24
100.0% - Apr 25
100%
50-99%
<50%

Historical Performance

Dec-2025

Monthly Uptime

95.83%

Monthly Response Time

178ms

Daily Status Breakdown
100.0% - Dec 21
100.0% - Dec 20
95.8% - Dec 19
29.2% - Dec 18
87.5% - Dec 17
100.0% - Dec 16
100.0% - Dec 15
100.0% - Dec 14
100.0% - Dec 13
100.0% - Dec 12
100.0% - Dec 11
100.0% - Dec 10
100.0% - Dec 09
100.0% - Dec 08
100.0% - Dec 07
100.0% - Dec 06
100.0% - Dec 05
100.0% - Dec 04
100.0% - Dec 03
100.0% - Dec 02
100.0% - Dec 01

Nov-2025

Monthly Uptime

100%

Monthly Response Time

180ms

Daily Status Breakdown
100.0% - Nov 30
100.0% - Nov 29
100.0% - Nov 28
100.0% - Nov 27
100.0% - Nov 26
100.0% - Nov 25
100.0% - Nov 24
100.0% - Nov 23
100.0% - Nov 22
100.0% - Nov 21
100.0% - Nov 20
100.0% - Nov 19
100.0% - Nov 18
100.0% - Nov 17
100.0% - Nov 16
100.0% - Nov 15
100.0% - Nov 14
100.0% - Nov 13
100.0% - Nov 12
100.0% - Nov 11
100.0% - Nov 10
100.0% - Nov 09
100.0% - Nov 08
100.0% - Nov 07
100.0% - Nov 06
100.0% - Nov 05
100.0% - Nov 04
100.0% - Nov 03
100.0% - Nov 02
100.0% - Nov 01

Oct-2025

Monthly Uptime

100%

Monthly Response Time

192ms

Daily Status Breakdown
100.0% - Oct 31
100.0% - Oct 30
100.0% - Oct 29
100.0% - Oct 28
100.0% - Oct 27
100.0% - Oct 26
100.0% - Oct 25
100.0% - Oct 24
100.0% - Oct 23
100.0% - Oct 22
100.0% - Oct 21
100.0% - Oct 20
100.0% - Oct 19
100.0% - Oct 18
100.0% - Oct 17
100.0% - Oct 16
100.0% - Oct 15
100.0% - Oct 14
100.0% - Oct 13
100.0% - Oct 12
100.0% - Oct 11
100.0% - Oct 10
100.0% - Oct 09
100.0% - Oct 08
100.0% - Oct 07
100.0% - Oct 06
100.0% - Oct 05
100.0% - Oct 04
100.0% - Oct 03
100.0% - Oct 02
100.0% - Oct 01

Sep-2025

Monthly Uptime

100%

Monthly Response Time

188ms

Daily Status Breakdown
100.0% - Sep 30
100.0% - Sep 29
100.0% - Sep 28
100.0% - Sep 27
100.0% - Sep 26
100.0% - Sep 25
100.0% - Sep 24
100.0% - Sep 23
100.0% - Sep 22
100.0% - Sep 21
100.0% - Sep 20
100.0% - Sep 19
100.0% - Sep 18
100.0% - Sep 17
100.0% - Sep 16
100.0% - Sep 15
100.0% - Sep 14
100.0% - Sep 13
100.0% - Sep 12
100.0% - Sep 11
100.0% - Sep 10
100.0% - Sep 09
100.0% - Sep 08
100.0% - Sep 05
100.0% - Sep 04
100.0% - Sep 03
100.0% - Sep 02
100.0% - Sep 01

Aug-2025

Monthly Uptime

99.85%

Monthly Response Time

215ms

Daily Status Breakdown
100.0% - Aug 31
100.0% - Aug 30
100.0% - Aug 29
100.0% - Aug 28
100.0% - Aug 27
95.5% - Aug 26
100.0% - Aug 25
100.0% - Aug 24
100.0% - Aug 23
100.0% - Aug 22
100.0% - Aug 21
100.0% - Aug 20
100.0% - Aug 19
100.0% - Aug 18
100.0% - Aug 17
100.0% - Aug 16
100.0% - Aug 15
100.0% - Aug 14
100.0% - Aug 13
100.0% - Aug 12
100.0% - Aug 11
100.0% - Aug 10
100.0% - Aug 09
100.0% - Aug 08
100.0% - Aug 07
100.0% - Aug 06
100.0% - Aug 05
100.0% - Aug 04
100.0% - Aug 03
100.0% - Aug 02
100.0% - Aug 01

Jul-2025

Monthly Uptime

100%

Monthly Response Time

174ms

Daily Status Breakdown
100.0% - Jul 31
100.0% - Jul 30
100.0% - Jul 29
100.0% - Jul 28
100.0% - Jul 27
100.0% - Jul 26
100.0% - Jul 25
100.0% - Jul 24
100.0% - Jul 23
100.0% - Jul 22
100.0% - Jul 21
100.0% - Jul 20
100.0% - Jul 19
100.0% - Jul 18
100.0% - Jul 17
100.0% - Jul 16
100.0% - Jul 15
100.0% - Jul 14
100.0% - Jul 13
100.0% - Jul 12
100.0% - Jul 11
100.0% - Jul 10
100.0% - Jul 09
100.0% - Jul 08
100.0% - Jul 07
100.0% - Jul 06
100.0% - Jul 05
100.0% - Jul 04
100.0% - Jul 03
100.0% - Jul 02
100.0% - Jul 01

Jun-2025

Monthly Uptime

100%

Monthly Response Time

241ms

Daily Status Breakdown
100.0% - Jun 30
100.0% - Jun 29
100.0% - Jun 28
100.0% - Jun 27
100.0% - Jun 26
100.0% - Jun 25

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