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RiversideCA.gov
CONTROL SYSTEMS UPGRADE AT CLEARWATER POWER PLANTCity CouncilNovember 18, 2025Riverside Public Utilities RiversideCA.gov2
Clearwater Power Plant•Commissioned in 2005•Acquired by Riverside Public Utilities (RPU) in 2010•Combined cycle power plant that uses both a gas and steam turbine •Capability of producing 30 megawatts of efficient powerBACKGROUND 1 2
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1. Balance of Plant (BOP) Control Systema. Comprised of over 250 hardware and software componentsb. Monitors and controls support systemsc. Essential to maintain reliability, environmental compliance, and safe operations d. Existing system installed during the commissioning of the plant e. Proprietary product developed by ABB, Inc. (ABB)2. ABB Conducted a Lifecycle Assessmenta. First performed in 2013 and a minimal upgrade was completedb. Another assessment in November 2024 to evaluate status and viability through forecasted retirement of Clearwater in 2040BACKGROUND RiversideCA.gov4
BACKGROUND
Lifecycle Assessment Resultsa. Substantial increase in obsolete componentsb. Software is outdatedc. Difficult to source replacement partsd. Existing control system is not sustainable until forecasted retiremente. Upgrade is strongly recommended DescriptionLifecycle StatusProduct Actively Marketed, Sold and SupportedActive GREENProduct Sold and Supported; Newer Technology Product AvailableClassic YELLOWProduct Supported; not Actively Marketed and SoldLimited REDBest Effort Support OnlyObsolete BLACK 3 4
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1. ABB designed and commissioned the original BOP Control Systema. Technical expertise of the existing complex and customized control systemb. Immediate access to compatible replacement partsc. Proprietary knowledge to complete upgrade efficiently with minimal integration risks 2. ABB Proposal for BOP Control System Upgrade – 3 Primary Tasks•Task 1: S+ Human-Machine Interface (HMI) Software UpgradeUpgrading outdated software, computer equipment, and operator workstations.•Task 2– Distributed Control Systems (DCS) EvolutionMore than 115 obsolete components will be replaced while utilizing existing infrastructure. Some parts will be repurposed as spares.•Task 3– Three-Year Software License AgreementRegular software updates, security patches, unlimited technical support, and access to future vendor discounts.DISCUSSION RiversideCA.gov6
DISCUSSION1. Project Cost Summary 2. 10% Contingencya. Amendments required for any unforeseen changes in work scopeb. Up to 30 days to process a fully executed amendmentc. Delays will increase costs and prolong the non-operational period d. Does not guarantee payment nor increase cost for the projecte. Covers unforeseen and reasonable changes to the projectf. Requires Riverside’s authorization prior to any project changes 5 6
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That the City Council:1. Approve the Professional Consultant Services Agreement with ABB, Inc. of Cary, North Carolina to perform control system upgrades at the Clearwater Power Plant for $1,640,971.17; and2. Authorize the City Manager, or designee, to execute the Professional Consultant Services Agreement with ABB, Inc., including the ability to make non-substantive changes. RECOMMENDATIONS7