https://www.treasureislandsfpoweroutages.com/ Documenting power outages on Treasure Island, San Francisco. Major incident reports from SFPUC Power Enterprise. en-us Fri, 27 Mar 2026 03:15:00 GMT Location: All of Treasure Island and Yerba Buena Island Duration: ~4 hours Cause: Unknown SFPUC Power Enterprise Alert: Power Outage on Treasure Island, Power Outage on Yerba Buena Island. Affected area: All of Treasure Island and Yerba Buena Island. Impact: 500 or more units out of power, not all housing is down. Cause: Unknown. PUC crews en-route. Fri, 27 Mar 2026 03:15:00 GMT incident-15 https://www.treasureislandsfpoweroutages.com Location: Halibut Ct, Job Corps, TI Waste Water Duration: ~4 hours Cause: Unknown SFPUC Power Enterprise Alert: 5th power outage of 2026. Outage affecting Halibut Ct, Job Corps, and TI waste water facilities. Estimated impact: 0–50 housing units. Cause unknown. PUC crews responded and grid power was restored by approximately 8:44 PM. Crews have exited. No further updates planned. Alert prepared by Ian Anonuevo, SFPUC Power Enterprise. Sun, 22 Feb 2026 00:36:00 GMT incident-12 https://www.treasureislandsfpoweroutages.com Location: South End – DOL, Ave D, H, I, M, 4th & 9th St, Chinook Ct, Flounder Ct, Croaker St, Sturgeon St Duration: ~2 hours Cause: Animal – Bird Strike SFPUC Power Enterprise Alert: 4th power outage of 2026. Bird strike on 4th between Ave M and N caused the outage, affecting the south end of the island including DOL, Ave D, H, I, M, 4th & 9th St, Chinook Ct, Flounder Ct, Croaker St, and Sturgeon St. Estimated impact: 100–200 housing units. PUC crews responded and grid power has been restored. Crews have exited. No further updates planned. Alert prepared by Chang Ly, SFPUC Power Enterprise. Fri, 20 Feb 2026 20:00:00 GMT incident-11 https://www.treasureislandsfpoweroutages.com Location: South End – DOL, Ave D, H, I, M, 4th & 9th St, Chinook Ct, Flounder Ct, Sturgeon St Duration: ~4 hours Cause: Equipment Failure – Downed Line SFPUC Power Enterprise Alert: Power outage on south end of Treasure Island affecting 100-200 housing units. Areas impacted include DOL, Ave D, H, I, M, 4th and 9th St, Chinook Ct, Flounder Ct, and Sturgeon St. PUC crews responded and identified a downed line as the cause. Crews repaired/replaced the downed line and grid power was restored by approximately 12:11 AM on February 17. Alert prepared by Ian Anonuevo, SFPUC Power Enterprise. Tue, 17 Feb 2026 04:13:00 GMT incident-10 https://www.treasureislandsfpoweroutages.com Location: Legacy Circuit – Southern Treasure Island Duration: 2 hours 5 minutes Cause: Unknown – Legacy Circuit under investigation Initial alert at 11:16 PM reported a Legacy Circuit failure impacting 0-50 units on the southern side. Crews arrived by 1:21 AM and completed restoration, returning power to both market and residential customers after 2 hours 5 minutes of downtime. Investigation notes credit patrol response for confirming no additional faults remain on the Legacy Circuit. Sat, 10 Jan 2026 07:16:00 GMT incident-9 https://www.treasureislandsfpoweroutages.com Location: Bldg. 201 and 202 Duration: ~7 hours Cause: Scheduled Maintenance - Cable Replacement Scheduled maintenance outage for cable replacement. PUC crews performed work from 8:00 AM to 5:50 PM. Grid power fully restored by evening. Impacted 0-50 housing units. Wed, 07 Jan 2026 16:00:00 GMT incident-8 https://www.treasureislandsfpoweroutages.com Location: 1131 & 1135 Mason St Duration: 5 hours 43 minutes Cause: Equipment Failure - Transformer Replacement Initially reported as voltage spike at 1135 Mason Ct, investigation revealed transformer equipment failure affecting 1131 and 1135 Mason St. PUC crews replaced failed transformer and restored power. Impacted 0-50 housing units. Wed, 31 Dec 2025 04:05:00 GMT incident-7 https://www.treasureislandsfpoweroutages.com Location: BLDG 201, 202, 811 Ave I Duration: 3 hours Cause: Scheduled Maintenance - Transformer Wiring Maintenance outage to finish wiring accessories in transformer at Buildings 201, 202, and 811 Ave I. Initially impacted 50-100 housing units. PUC crews on scene, power restored by 9:00 AM with work completed. Final impact: 0-50 units. Wed, 24 Dec 2025 14:00:00 GMT incident-6 https://www.treasureislandsfpoweroutages.com Location: BLDG 201, BLDG 202, Ave H & I Duration: 12 hours 48 minutes Cause: Transformer Failure - Replacement Required Transformer failure affecting Buildings 201, 202, and parts of Avenue H and I. Failed transformer required replacement. Power was restored to TI market by 1:01 PM, but transformer replacement work continues with no ETA for completion. Impacted 0-50 housing units. Three-stage response: crews en-route (10:42 AM), on-scene with partial restoration (1:01 PM), ongoing repairs with no residents without power but no completion timeline (2:58 PM). Power fully restored at 11:30 PM after transformer replacement completed. Mon, 22 Dec 2025 18:42:00 GMT incident-5 https://www.treasureislandsfpoweroutages.com Location: Island-wide – Treasure Island & Yerba Buena Island Duration: ~8 hours (10:00 PM Oct 25 – 6:00 AM Oct 26) Cause: Planned Maintenance – PG&E 115 kV Line at Port of Oakland SFPUC Power Enterprise Alert: Planned outage due to PG&E conducting maintenance on the 115 kV line at the Port of Oakland, which feeds electricity to both islands. All customers affected — 400–500 housing units impacted. Both islands placed on backup 2MW generator power from approximately 10:00 PM to 6:00 AM. Work Order 9105747, supervised by Ryan Dunbar (RDUNBAR), Crew PE2. Planned labor: $6,857.05. Actual labor: $3,963.00 across 5 crew members (RDUNBAR, MMENIOLAS, JSYSE, JCOLE, VHONG) working premium/overtime hours Oct 24–27. Hetch Hetchy Power customers including Maceo May, The Bristol, and Isle House Apartments affected. Schedule adjusted from original PG&E request. Alerts prepared by Ryan Dunbar, SFPUC Power Enterprise. Obtained via CPRA/Sunshine request Case 25-8483. Sun, 26 Oct 2025 04:48:00 GMT incident-14 https://www.treasureislandsfpoweroutages.com/news#news-2025-10-25 Location: Gateview Ave (1301–1310) & Ave B (901/905) Duration: ~6.5 hours (9:01 AM – 3:34 PM) Cause: Planned Maintenance – HV Underground Cable Work SFPUC Power Enterprise Alert: Planned outage for HV maintenance and underground cable work at Gateview Ave and Avenue B (Work Order 9091320, Case 25-7677). Initially scoped to 1301–1310 Gateview and 901/905 Ave B, the outage expanded to all of Gateview Ave by afternoon. 50–100 housing units impacted. HV team performed underground cable infrastructure replacement including load-break elbows, bushing inserts, junction brackets, and ground rods. At 3:19 PM, a brief additional outage (15–20 min) was required to reconnect to grid power. Grid power fully restored at 3:34 PM. Total project cost: $20,876 ($9,722 labor across 7 crew members over multiple days, $11,154 in materials). Work continued through October 25–26 for final connections. Related to WO 8356467 (VIP Powerline routine maintenance). Alerts prepared by Chang Ly and Ian Anonuevo, SFPUC Power Enterprise. Thu, 02 Oct 2025 16:01:00 GMT incident-13 https://www.treasureislandsfpoweroutages.com/news#news-2025-10-02 Location: Gateview Ave / Bldg 1307 Duration: 38 hours Cause: Transformer Failure (TX-155) — Known Repeat Cable Failed 37.5 KVA transformer (TX-155) at Building 1307 triggered a 38-hour outage affecting 30–100 units (Work Order 9016650). SFPUC crews were stalled for 9.5 hours when city computers blocked a firmware update for broken testing equipment. Workers timed out at 9 PM on Aug 17 and left residents on generator power overnight. Root cause linked to a known-repeat-failure underground cable — the same section that failed in December 2024. Sun, 17 Aug 2025 06:50:00 GMT incident-3 https://www.treasureislandsfpoweroutages.com/news#news-2025-08-16 Location: Island-wide (Multi-Utility) Duration: 4 days (Feb 14-18) Cause: Systemic Infrastructure Collapse - Multi-Utility Failure Valentine's Day multi-utility collapse: Combined gas leak and electrical equipment failures created a cascading crisis affecting ~400 units (80% of homes). Started with gas leak on Feb 14 at 2:13 AM, expanded to 200+ units on Feb 16, fully restored Feb 18 at 11:14 AM. Residents left without heat, hot water, or ability to cook for four days in winter. Fri, 14 Feb 2025 10:13:00 GMT incident-1 https://www.treasureislandsfpoweroutages.com Location: Gateview Ave / Underground Duration: 24 hours Cause: Cable Failure Massive underground cable failure. Crews exhausted personnel supply, work paused overnight leaving 42 units in darkness. Wed, 18 Dec 2024 10:10:00 GMT incident-2 https://www.treasureislandsfpoweroutages.com Location: Island-wide Duration: 2 days Cause: Trans-bay Cable & Generator Failure Davis Substation feed failure. Generators failed mechanically and ran out of fuel, forcing intentional blackouts. Tue, 05 Nov 2019 22:30:00 GMT incident-4 https://www.treasureislandsfpoweroutages.com