c o m m e r c i a l o & m p a r t n e r s h i p

SunSystem Technology (SST) is rede�ning the standard in Operations, Maintenance, Corrective Action, and Third Party Commissioning of commercial, industrial and utility scale photovoltaic (PV) solar power plants. As a mission critical service provider we focus on maximizing system uptime, improving production output and, most importantly, achieving project ROI targets. Our team consists of Asset Managers, Engineers, Electricians, Analysts, Technicians, Designers, Construction Personnel and Customer Facing Professionals. Our team is dedicated to working seamlessly toward maximum system uptime and utmost energy harvest.

CAL ISO

TABLE OF CONTENTS

EXPERIENCE

REPRESENTATIVE PROJECTS

HIGH PROFILE PROJECTS

TESTIMONIALS

PROJECT COVERAGE

ASSET MANAGEMENT

O&M TEAM

O&M OVERVIEW

PREVENTATIVE MAINTENANCE OVERVIEW

CORRECTIVE ACTION

O&M OFFERINGS

REPRESENTATIVE PM SERVICES LIST

SCOPE OF WORK

ADDITIONAL SERVICES

RECOMMISSIONING

INDEPENDENT AUDITS

ADVANCED ENERGY STORAGE

SERVICE AUTHORIZATIONS

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NO SUBSTITUTE FOR EXPERIENCE

NORTH PALM SPRINGS MUNICIPAL SOLAR FARMPALM SPRINGS, CA

GRIDLEY GENERATION FACILITYGRIDLEY, CA

SIERRA NEVADA BREWING CO.CHICO, CA

UNIVERSITY OF CA, DAVISDAVIS, CA

AEROJETRANCHO CORDOVA, CA

EXPLORITORIUM MUSUEMSAN FRANSISCO, CA

System Size: 4,194 kW DCSystem Type: Ground Mount Single Axis TrackerPV Modules: (17,846) Trina TSM-235 ModulesRacking: ATI DuraTrack HZ v3Inverters: Advanced Energy (8) 500 kW

System Size: 503 kW DCSystem Type: Roof MountPV Modules: (2,288) SunPower SPR-220 ModulesTracker: PowerTracker Elevated Carport Single Axis TrackerInverters: Satcon 500 kw

System Size: 1,439 kW DCSystem Type: Roof MountPV Modules: (4,428) SPR-325 ModulesRacking: SunPower T5Inverters: Solectria (10) 125kW

System Size: 7,800 kW DCSystem Type: Ground Mount Single Axis TrackerPV Modules: (35,455) SPI-220 ModulesTracker: O-Solar Single axis trackerInverters: SMA (5) 500 kW, Satcon (8) 500kW

System Size: 6,000 kW DCSystem Type: Ground Mount Single Axis TrackerPV Modules: (27,273) SPI-220 Modules Tracker: O-Solar Single Axis Tracker Inverters: Advanced Energy (9) 500kw, (2) 333kW

System Size: 16,286 kW DCSystem Type: Ground Mount Single Axis TrackerPV Modules: (38,310) SPR-425 ModulesTracker: SunPower T0 TrackerInverters: ABB (32) 500kW

REPRESENTATIVE O&M SERVICE PROJECTS

SST incorporates over 100 years of combined experience in the solar industry, with a history of over 150 Megawatts of installed photovoltaic solar systems. Our projects consist of residential �eets, small to large commercial, industrial and utility scale.

(NOT ALL PROJECTS SHOWN)

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GOLDEN 1 CENTER

STAPLES CENTER

SST is proud to announce that we have been selected to provide the solar system for the new Golden 1 Center - home of the Sacramento Kings! We will be demonstrating our expertise with roof mounted solar panels and distributed string inverters. This highly coveted project will certainly be the marquee solar installation for our region. The SST name will forever be associated with placing the jewels atop the new Crown of Sacramento.

System size: 709 kW DCAnnual system production: 995,337 kWh'sEquivalent to powering: 63 homes for a yearGreenhouse gas reduction: 1,532,072 lbsExpected system life: 30-40 years

In keeping with our proud tradition of providing mission critical renewable energy uptime for professional sporting venues, our team keeps the Staples center running at optimal performance. Whether it is one of the four professional teams playing a crucial game, a sold out concert, or another fantastic event – SST ensures full value from the renewable energy harvest.

System size: 364 kW DCAnnual system production: 524,544 kWh'sEquivalent to powering: 34 homes for a yearGreenhouse gas reduction: 786,565 lbsExpected system life: 30-40 years

PROFESSIONALGRADE

SERVICES

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ASSET MANAGEMENT

Billing, collections, paymentsAccounting and �nancial reportingTax preparation/�ling/administrationEquity/debt �nancing managementInsurance administrationInterface with banks, investors, regulators, local authorities, etc.SPV/project co, representationOther services (REC accounting/trading, community bene�ts, etc)

Plant/asset performance supervisionAsset performance reportingOversite/management of O&M provider (and other contractors)

ARE YOU IN NEED OF ASSET MANAGEMENT?

SST o�ers a full service asset management program.

TECHNICAL ASSETMANAGEMENT

FINANCIAL ASSETMANAGEMENT

WARRANTY MANAGEMENT

Facilitate component warrantiesEliminates burdenSingle point of contactEnsures warranties metClaims management Successful outcomes

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LOCATIONS

SST’s service technicians maintain certi�cation with all supported equipment manufacturers. This includes hands-on training for installation, service, and repair. We gain pre-release knowledge of next-generation models and the bene�ts they can deliver through increased e�ciencies and production results.

TEAMO&M

With o�ces centrally positioned, SST is able to service most locations within 24 hours.

EMERGENCY 24 HOUR SERVICE AVAILBLE

DEDICATED SERVICE REPRESENTATIVE

Experienced Technicians Professional EngineersLicenced ElectriciansIn-house professionalsAdherence to all NEC and local codesVast equipment knowledgeSound, safe, and reliable

In-house professionalsFully accreditedExperienced trouble shootersDecades of combined experience

Years of preventive maintenancePerformance testingReal world modelingIssue resolution

Customer Service 24/7/365 supportProactive monitoringDispatch from local service centers24/48 hour response

Newark, NJLos Angeles, CA

San Diego, CAFresno, CADenver, CO

Headquarters Rancho Cordova, CA

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- Expert troubleshooting- Expansive part availability

- Quick action- Value engineered repairs

- Thorough documentation

- Peace of mind- Measure system health

- Track key performance indicators- Proactive symptom identi�cation

- Environmental considerations- All manufactures supported

- Sets baselines - Yearly, monthly, or weekly reports

- Maximize performance- Prevent failures and breakdowns

- Avoid losses- Ensure cash �ow

PROTECT YOUR INVESTMENTOur robust team of experienced Electrical Engineers and Solar Technicians are fully trained and certi�ed to analyze, test, repair and replace every component of your solar electric facility. Through years of experience in the electrical and solar industries, we have developed the most comprehensive and cost e�ective Solar PV O&M protocol in the industry today.

SST’s O&M

MONITORING, BENCHAMARKING,

CORR

ECTI

VE ACTION

AND REPORTING

PREVENTATIVE MAINTENANCE

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SERVICES TAILORED TO LIFECYCLE CARE

Software upgrades

System performance analysis

PreventativeMaintenance

Inverter inspection and maintenance

Array inspection

String testing

AC inspection

Tracker inspection and maintenance

System inspection and calibration

Ensure all manufacturer recommended maintenance is completed at prescribed intervals. Inspect common failure points to ensure issues are discovered before any loss in production.

Mechanical inspection of racking and conduit runs, visual inspection of wire management, and thermal imaging of modules.

Regular testing of voltage and current at the string level ensures any loss in production is addressed in a timely manner.

Inspection of all subpanels, switchgear, and disconnects. Including torque checks, mechanical inspection, and thermal imaging of all conductors, bussing, fuses, and breakers. Prevents loss in production associated with failed AC components.

If applicable, regular inspection of critical tracker components and performing the manufacturer’s recommended maintenance identi�es and prevents any issues which may lead to lost production.

To ensure IT system health and accuracy of the monitoring data system, calibration is vital. Inspection and calibration of the every component in the Data Acquisition System and Meteorological Station con�rms the monitoring system is reporting accurate data. Accurate monitoring data is crucial to forecasting production and identifying production issues as they arise.

Performance analysis at the inverter and system level can identify trends in production which may indicate underlying issues with the system.

Scheduling and execution of software upgrades is critical to ensuring that component e�ciency is optimized and full operational capabilities are in play. Since each system is unique, SST creates a schedule of upgrades based on the components being used and the manufacturers involved.

Our 200 point preventative maintenance checklist veri�es the health of your entire system.

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STAGES OF CORRECTIVE ACTION

IDENTIFYIssue has been �agged by SST monitoring or on-site evaluation.

STEP01

REPAIRPlan of action is determined and accepted by system owner.

STEP02

DOCUMENTRepair is enacted and documented for future reference.

STEP03

WARRANTRepair is fully warranted by SST. STEP

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MONITORINGBY SST

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SST O&M TIERS

PLUSEverything included in “Basic” levelInitial onsite system health checkWeekly review of system monitoringMonthly system reports

PREMIUMEverything included in “Plus” levelInitial system recommissioning24/7/365 system monitoring Annual preventive maintenance packageGuaranteed corrective action response times

BASICInitial remote performance system analysisPeriodic review of system monitoringSST O&M updates/newsletterAnnual performance summary

ULTIMATEEverything included in “PREMIUM” levelSemi-annual preventive maintenance packageAnnual IV curve tracing

SST o�ers four di�erent tiers of O&M protecton. Your situation and preferences will help to determine which o�ering is best for you.

CUSTOM PACKAGES AVAILABLE PER REQUEST 12

TIERED PREVENTATIVE MANTENANCE SERVICES

CONTROLLER INSPECTION-Inspect controller box for leaks-Verify manual operation of controller-Verify automatic operation of controller-Inspect inclinometer

COMBINER BOX & DC DISCONNECT INSPECTION-Check for water penetration and drains-Inspect DC disconnect / contactor on CB door -Check DC disconnect / contactor mechanical integrity and operation-Check for corrosion on terminations and bussing-Check CB ground continuity-Inspect wire management-Verify that string terminations are tight and properly seated -Inspect DC conductors for physical damage-Inspect fuse holders -Inspect cable entry, looking for potential causes of ground faults-Test DC string open circuit voltage (VOC) -Test DC string operating current (current at max power or Imp) -Perform thermal imaging of components and connections under load

CENTRAL OR STRING INVERTER INSPECTION & TESTS -Inspect inverter mounting-Inspect conductor entry to the inverter & wire management-Check inverter terminal connections -Inspect conductor labeling and color coding-Inspect AC terminations -Inspect inverter AC disconnect / contactor -Inspect DC disconnect / contactor -Verify proper inverter display, keypad and key switch operation-Check AC and DC voltages

AC INSPECTION-Inspect utility AC disconnect / contactor -Inspect panel boards-Inspect equipment pad for any issues that may a�ect service-Inspect inverter pad switchgear physical condition-Inspect switchgear conductors & communications cables -Verify proper grounding-Inspect transformer (step up or step down) physical condition (if external to inverter)-Inspect oil-�lled or pad-mount transformer -Perform inverter thermal imaging of feeder terminations-Inspect AC disconnect fuses-Inspect circuit breaker labeling-Inspect conductor routing-Inspect conductors for proper landing and torque mark alignment-Inspect tie in

SITE GROUNDS INSPECTION-Note any safety concerns including �re hazards-Walk the site with as-built plan set to become orientated and verify construction matches plan set-Inspect site for erosion control and drainage issues-Inspect site for signi�cant vegetation-Inspect site for shading-Inspect integrity of fences, gates and locks-Inspect signage

DAS / METERING INSPECTION-Inspect DAS Location-Inspect DAS enclosure for potential water entry points-Verify that DAS is wired per as-built plan set-Inspect wiring-Verify that remote monitoring matches local monitoring-Test DAS battery backup

MET STATION INSPECTION-Inspect weather station physical condition-Inspect weather station mounting-Inspect pyranometer for soiling-Verify pyranometer irradiance readings-Verify that pyranometer is level -Inspect reference cell for soiling-Verify reference cell irradiance readings-Verify that reference cell is in plane of array (PoA)-Inspect anemometer -Inspect back of module temperature sensor-Inspect ambient temperature sensor

ARRAY INSPECTION-Inspect array overall condition-Con�rm array is installed in accordance with plan set-Check panel tilts -Inspect for array shading-Inspect array for soiling-Inspect for any debris build-up, trash on/near array-Check for visible module defects / broken PV modules-Check wire management and condition-Inspect multi-contact connector condition

GROUNDING SYSTEM INSPECTION & TESTING-Verify grounding compliance with plan set, speci�cations and the NEC

ROOF INSPECTION-Inspect for ponding water-Visually inspect roof physical condition-Visually inspect roof penetrations-Inspect slip sheet installations

TRACKER INSPECTION-Con�rm that area is clear of obstructions-Inspect structural components and welds-Inspect drive and cotter pins -Con�rm proper PV module attachment to Tracker -Check torque on bolted connections

SCREW JACK / MOTOR INSPECTION-Inspect jack housing, gearbox, and motor-Inspect jack screw-Inspect jack screw lubrication-Inspect jack boot-Verify motor operation

CONTRACTURAL /SPECIAL REQUIREMENTS (when req'd)-I/V Curve Tracing-100% module FLIR Imaging-Module Washing-Megger testing o� conductors-Calibration of aggregate meter, DAS/Met stations sensor-Vegetation management

PERFORMANCE DURATIONPerformed Annually Performed Semiannually

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BASIC

PLUS

PREMIUM

ULTIMATE

BASIC

PLUS

PREMIUM

ULTIMATE

DATA AQUISITIONSYSTEM

SCOPE OF WORK EXAMPLE

MODULEWASHING

GROUNDING SYSTEMINSPECTION & TESTING

MET STATIONINSPECTION

SCREW JACK / MOTORINSPECTION

INVERTERMAINTENANCE

TRASFORMERINSPECTION

TRACKERMAINTENANCE

COMBINER BOX &DC DISCONNECT

INSPECTION

AC INSPECTION

SITE GROUNDSINSPECTION

ARRAYINSPECTION

DAS / METERINGINSPECTION

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ADDITIONAL SERVICES

100% module Thermal Imaging

Module washing

Megger test of conductors

Calibration of aggregate meter, DAS/Met station sensors

Vegetation management

IV Curve tracing

Provides a permanent record of the as-built system performance, a benchmark for comparison as arrays age and degrade. Identi�es underperforming strings by measuring string voltage and current.

IR [infrared] imaging is used to quickly identify hot spots resulting from cracked cells, failed solder joints or damaged bypass diodes. Prevents production losses from going unnoticed for extended periods of time.

Estimated annual soiling losses range from 2.5% to nearly 15%, depending upon local conditions. Regular washing mitigates these losses.

A megohm-meter is used to test electrical insulation. Megger testing is a common step during PV system commissioning or acceptance, especially on larger projects and PPAs. An essential test when troubleshooting intermittent ground faults, since a megohm-meter can identify a conductor with weak or damaged insulation.

Inherent sensor error, sensor drift, bad connections and inaccurate calibration all contribute to measurement uncertainty. Regular calibration of these sensors ensures any analysis is based on accurate data.

Included in ULTIMATE PLAN

Initial onsite system health check up

Vegetation growth can lead to revenue stealing shade. Plant growth can also interfere with structural integrity. Regular vegetation removal is extremely important in high growth areas.

Know that your system is performing up to expectations. This process includes a thorough visual inspection along with selective testing. A health report is generated and any items requiring corrective action are idenit�ed and prioritized for the system owner.

Included in PLUS, PREMIUM and ULTIMATE

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RECOMMISONINGCommissioning is the �nal veri�cation process used to compare and con�rm an installed project to its designed plans and engineering. It is the last chance to identify quality in workmanship, materials and ensures system integrity for the lifespan of the system. Your system was commissioned before being turned over to you the �rst time. An important step in assuming O&M of a solar asset, recommissioning establishes a new baseline for all future measurements. It determines whether a system is underperforming expectations. In addition, this service can identify small issues before they become costlier.

Recommissioning is included with our Premium and Ultimate package.

INDEPENDENT AUDITSLooking to sell or buy a solar asset? Know the value of that solar electric facility with a full system appraisal. Our technicians perform an intrinsic audit of all mechanical and electrical components throughout your solar power plant. We measure the historical performance data and equipment degradation rates to compare them with current day performance readings to determine the resale value of the system.

Intrinsic plan review Intensive system testing and inspection Inspection of all racking hardware and componentsInspection of all conductors Inverter e�ciency and performance veri�cation Test and verify proper operability of the monitoring system Full system performance test

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ADVANCED ENERGY STORAGE

Storage is the next phase of the renewable energy revolution. Whether it is demand shaving, PV smoothing, micro-grid or backup, we have you covered.

Expert designQuali�ed installation

Certi�ed O&M expertise

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*simulated design

CONTROLS

GENERATOR

ADVANCED ENERGY STORAGE

UTILITY

SOLAR SYSTEM

CONSUMER

8AM 10AM 12AM 2PM 4PM 6PM 8PM

MAX DEMAND WITH AES

MAX DEMAND WITHOUT ADVANCEDENERGY STORAGE (AES)

SAMPLE OF OUR AUTHORIZED PARTNERS

System SafetySunSystem identi�es poor installation practices and faulty equipment to prevent system damages and health hazards. We enforce all OSHA regulations, standards and the use of proper personal protective equipment by all working and visiting personnel.

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www.sunsystemtechnology.com2731 Citrus Road, Suite D, Rancho Cordova, CA 95742

844-477-8787