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1 RiversideCA.gov
1 RiversideCA.gov
WILDFIRE MITIGATION PLAN 2025
City Council
June 24, 2025
Riverside Public Utilities
RiversideCA.gov
2 Public Utilities Code Section 8387 :
1. Every electric utility in California is required to construct, maintain, and operate their electrical system in a manner that minimizes the risk of wildfire
2. All utilities are required to prepare a Wildfire Mitigation Plan (WMP) and update the plan annually
a. Content is specified and prescriptive – WMP is a compliance document b. An independent evaluator with experience in assessing the safe operation of electrical infrastructure must review the WMP (every three years) c. WMP and the independent evaluator report (when applicable) must be presented at a public meeting of the utility’s governing board
d. Reports must be posted on the utility’s website
e. Reports must be submitted to the State’s Wildfire Safety Advisory Board
BACKGROUND
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2 RiversideCA.gov3
Identifies and addresses the following:1. High Fire Threat Districts (HFTD) in RPU Service Territory2. RPU electric infrastructure located within the HFTD3. Assessment of fire risk posed by electric infrastructure4. Preventative strategies to reduce risk5. Customer support and communications in the event of a de-energization6. Metrics and assessmentWILDFIRE MITIGATION PLAN RiversideCA.gov4
1. Identified by State agencies and stakeholder including RPU and Riverside Fire2. Fire Threat Districtsa. Tier 2: Areas with elevated wildfire riskb. Tier 3: Areas with extreme wildfire risk (typically undeveloped natural lands)HIGH FIRE THREAT DISTRICTS (HFTD) 3 4
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3 RiversideCA.gov5
RPU INFRASTRUCTURE IN HFTDTier 3 OHTier 2Total%Circuit-Miles%Circuit-MilesCircuit-Miles0.7%3.57.5%38.3512.6Overhead Distribution 0.4%0.411.2%11.199.3Overhead Transmission*0.6%3.98.1%49.4611.9Total Overhead Circuit-Miles**Note: Southern California Edison owns and operates seven sub-transmission lines extending from SCE’s Vista Substation. These lines comprise 22 miles of overhead transmission that feed into RPU and are not included in the table. RPU takes ownership of these lines at the boundary of its service territory. Lines in RPU territory are included in the overhead sub-transmission of the table.
RiversideCA.gov6
PREVENTATIVE STRATEGIESDesign & Construction Standards
•Materials Used•Equipment StandardsInspections & Maintenance • Vegetation Management• Equipment InspectionOperational Policies • Reclosing • De-EnergizationSituational Awareness
• Weather Monitoring• Cameras5
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4 RiversideCA.gov7
1. RPU had no reportable wildfire incidents in 20242. System and Operational Improvementsa. Continued to update older substation automation equipmentb. Installed new weather station and integrated data with existing stations to provide real-time weather information to system operatorsc. Developed new inspection plan 3. Continued close collaboration with the Riverside Fire Department2024 PERFORMANCE RiversideCA.gov8
1. Submit the 2025 WMP to the Wildfire Safety Advisory Board upon approval from City Council2. Continue to track, improve, and refine preventative strategies and metrics3. Update the plan for 2026, as applicableNEXT STEPS7 8 6/10/2025
5 RiversideCA.gov9
Strategic Priority 4 - Environmental StewardshipStrategic Priority 6 - Infrastructure, Mobility and ConnectivityCross-Cutting ThreadsSTRATEGIC PLAN ALIGNMENT Community Trust
Equity
Fiscal Responsibility
Innovation
Sustainability & Resiliency
RiversideCA.gov10
RECOMMENDATIONThat the City Council approve the Riverside Public Utilities 2025 Wildfire Mitigation Plan for submittal to the Wildfire Safety Advisory Board in accordance with California Public Utilities Code Section 8387.9 10