2014 PV Reliability, Operations & Maintenance Workshop: Arizona Public Service Solar O&M
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Transcript of 2014 PV Reliability, Operations & Maintenance Workshop: Arizona Public Service Solar O&M
![Page 1: 2014 PV Reliability, Operations & Maintenance Workshop: Arizona Public Service Solar O&M](https://reader034.fdocuments.us/reader034/viewer/2022051818/5495ccd4b47959564d8b4e18/html5/thumbnails/1.jpg)
Arizona Public Service Solar O&M
Jim Hansen
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APS solar sites under O&M
• AZ Sun – (9) utility scale sites, 170 MWAC – Allowed by utility commission
• Schools & Government – (59), 12 MWAC – Allowed by utility commission
• Legacy – (41), 4 MWAC – 5 to 15 years old
• Residential – (129), 1 MWAC – Special DOE project
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Solar O&M – AZ Sun Sites
• Operations (O) – Monitoring site: real time data, alarms, check
against estimated performance, security, 24/7 – “Smart” meter data for smaller sites
• Maintenance (M) – PM=Preventive Maintenance
• Weekly, semi-annual, annual – CM=Corrective Maintenance
• Equipment down, soiling, erosion
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Solar O&M Options
• Utility owned sites – Contract w/original EPC on each site for O&M
• Can be expensive over life of plant • Multiple contracts to manage
– Contract w/one supplier on all O&M • Problems with communications, multiple parties • Terms of contract are critical
– In-house O&M • Some problems w/warranty response of EPC • Could be most cost effective
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Utility Scale Solar Sites
• Biggest impacts on energy production – Switchgear, single point of failure
• Long lead time replacements • MV fuses, early degradation
– Inverters, most events/issues • Could be 1% to 11% impact for 1 inverter down
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Thank You, any questions?