O&M & AMC Services
A power plant commissioned well is a promise made. BARREL's Operations & Maintenance and Annual Maintenance Contract services keep that promise — delivering peak plant performance, maximum availability, and the lowest cost per unit of energy generated across the full 25–50 year operational lifetime of every plant we maintain.
Operations & Maintenance
Day-to-day plant operation and ongoing maintenance — keeping the plant running safely, efficiently, and at peak output every single day across its entire operational life.
- Daily plant operation and generation monitoring
- Preventive maintenance on scheduled intervals
- Corrective maintenance on fault occurrence
- Performance optimisation and loss analysis
- Health, safety, and environmental compliance
- Regulatory reporting and compliance maintenance
- Spare parts management at site
Together,
a lifetime
of performance
Annual Maintenance Contract
A fixed-scope, fixed-cost annual maintenance agreement — providing plant owners with predictable maintenance expenditure, guaranteed response times, and comprehensive equipment coverage.
- Defined annual maintenance scope and visit schedule
- Fixed annual cost — no surprise maintenance bills
- Guaranteed emergency response time
- Spare parts supply and management
- Annual performance audit and report
- Remote monitoring as part of contract
- Flexible scope — Basic, Standard, or Comprehensive
The Plant That Keeps Performing
Every energy project is an investment in decades of generation. A solar park generating 90% of its P50 target over 25 years earns crores more than the same park generating 80% — and the difference is almost entirely determined by the quality of its O&M. Underperformance, unplanned downtime, degradation beyond design, and undetected faults accumulate silently into enormous lifetime revenue losses.
BARREL's O&M practice brings the same engineering rigour and quality culture we apply in EPC to the operational phase — using predictive maintenance technology, SCADA-driven performance analytics, and proactive fault resolution to keep every plant running at or above its design point, for every day of its operational life.
Scheduled servicing before failures occur — protecting availability and extending equipment life.
Thermography, vibration analysis, and data trends detecting failures before they happen.
Real-time SCADA and remote monitoring — every plant, every asset, every alarm responded to.
Generation vs. P50 tracking, loss analysis, and continuous optimisation recommendations.
O&M Services — Every Technology
BARREL delivers specialist O&M services for every power generation and storage technology — with technology-specific maintenance procedures, trained technicians, and specialised tools for each vertical.
Solar Power O&M
Solar · Ground / Rooftop / FloatingComprehensive O&M for ground mount, rooftop, floating solar, and agrovoltaic plants — covering module cleaning, inverter servicing, string testing, SCADA monitoring, and complete plant performance management.
- Module cleaning — dry, wet, and robotic cleaning schedules per soiling rate
- String-level monitoring — IV curve tracing and EL imaging for defect detection
- Inverter preventive maintenance — filter cleaning, capacitor check, firmware update
- DC combiner box inspection — fuse, protection, and connector check
- Tracker system servicing — motor, gearbox, and sensor calibration (tracker plants)
- Earthing and lightning protection integrity check
- Floating system inspection — pontoon, mooring, and underwater cable check
- MV transformer oil testing, DGA, and HV switchgear maintenance
- Daily generation monitoring — actual vs. PR and P50 target
- Thermographic inspection — hot spot identification on modules and connections
Wind Power O&M
Wind · Onshore & OffshoreSpecialist O&M for onshore and offshore wind turbines — covering scheduled turbine servicing, blade inspection, gearbox monitoring, yaw and pitch system maintenance, and 24/7 SCADA performance monitoring.
- Scheduled WTG service — gearbox oil change, bearing grease, and torque checks
- Blade inspection — visual, drone, and ultrasonic testing for cracks and erosion
- Blade leading edge erosion repair and coating — extends aerodynamic performance
- Gearbox vibration monitoring — SCADA-integrated vibration trend analysis
- Pitch and yaw system servicing — motor, gearbox, and bearing maintenance
- Transformer oil sampling (DGA) and switchgear servicing in nacelle
- Tower bolt re-torquing — scheduled annual torque verification programme
- Offshore: subsea cable inspection, inter-array cable monitoring
- SCADA performance monitoring — power curve, AEP, and availability tracking
Hydro & Pump Storage O&M
Small Hydro · PHSO&M for small hydro (run-of-river, mini dam, canal drop) and Pumped Hydro Storage plants — turbine servicing, civil structure inspection, water management, and long-term asset care for 50+ year plant life.
- Turbine runner inspection — blade erosion, seal wear, and clearance measurement
- Generator winding insulation test and bearing temperature monitoring
- Governor system calibration and control system maintenance
- Penstock inspection — internal corrosion, wall thickness, and anchor check
- Weir, intake, and trash rack cleaning and structural inspection
- Dam and reservoir civil inspection — seepage, settlement, and crack monitoring
- PHS reversible unit inspection — pump mode and turbine mode performance test
- Annual major inspection — runner removal, bearing replacement, seal servicing
- Reservoir sedimentation monitoring and management
Nuclear SMR O&M
Micro Nuclear · SMRSpecialist nuclear plant O&M — operating and maintaining Small Modular Reactor-based micro-grid systems to AERB-approved maintenance programmes, with radiation monitoring, nuclear fuel management, and regulatory compliance at the core of every activity.
- Licensed reactor operations — AERB-qualified operators on shift at all times
- Reactor coolant system monitoring — temperature, pressure, and flow
- Nuclear auxiliary system preventive maintenance per AERB schedule
- Radiation monitoring programme — personnel dosimetry and area monitoring
- Turbine-generator preventive maintenance and vibration monitoring
- Planned reactor refuelling — outage management, fuel handling, and AERB inspection
- Nuclear waste management — characterisation, packaging, and disposal coordination
- Emergency preparedness drills — quarterly site exercise and annual off-site drill
- AERB operational reporting — safety reports, event reporting, and annual safety review
BESS & Energy Storage O&M
BESS · Heat · Pump StorageO&M for Battery Energy Storage Systems, Molten Salt Heat Storage, and Pumped Hydro Storage — BMS monitoring, cell health management, thermal system servicing, and long-term storage performance optimisation.
- Daily BMS monitoring — cell voltage, temperature, and state of charge
- Annual BESS capacity test — full charge/discharge cycle and degradation analysis
- Cell replacement programme — proactive replacement of degraded cells
- PCS/inverter preventive maintenance — filter, cooling, and firmware
- Fire suppression system inspection and agent replenishment
- Molten salt chemistry sampling — corrosion inhibitor dosing and quality management
- Heat storage tank insulation inspection and thermal loss measurement
- PHS turbine-pump annual inspection and lubrication programme
Thermal Power O&M
Coal · Gas · Combined CycleFull-scope O&M for coal and gas thermal power plants — turbine and boiler maintenance, emission control system upkeep, fuel management, and comprehensive plant reliability programmes.
- Steam and gas turbine planned outage management — inspection and parts replacement
- Boiler tube inspection, thickness gauging, and chemical cleaning
- Generator stator and rotor maintenance — insulation, cooling, and excitation
- Condenser tube cleaning — mechanical and chemical methods
- FGD, ESP, and SCR emission control system maintenance
- Ash handling system maintenance — conveyors, silos, and disposal
- Coal handling plant maintenance — crushers, conveyors, and dust suppression
- Plant heat rate monitoring and efficiency improvement programme
- CEMS (Continuous Emission Monitoring System) maintenance and calibration
Transmission & Substation O&M
Transmission · GridO&M for EHV transmission lines, AIS/GIS substations, and grid interconnection systems — ensuring reliable power evacuation with maximum uptime and regulatory compliance.
- Transmission line patrol — monthly foot and annual aerial inspection
- Tower and foundation inspection — corrosion, settlement, and clearance check
- Conductor and OPGW inspection — sag measurement and vibration damper check
- Substation transformer oil testing, DGA, and bushing inspection
- HV switchgear maintenance — circuit breaker timing, SF6 gas check, AIS cleaning
- Protection relay secondary injection test — annual functional verification
- SCADA and RTU calibration — all measurement points verified annually
- Earthing system resistance measurement — annual test programme
Distribution Network O&M
Distribution · Rural · IndustrialO&M for MV/LV distribution networks, rural electrification systems, smart meters, and industrial distribution — from routine line patrols and transformer servicing through to SCADA-controlled fault isolation and restoration.
- Distribution line patrol — monthly inspection of poles, conductors, and hardware
- Distribution transformer servicing — oil testing, tap changer, and cooling
- HT and LT fuse, isolator, and AB cable maintenance
- Smart meter data validation and communication system maintenance
- SCADA fault detection, isolation, and restoration (FDIR) monitoring
- Power quality monitoring — voltage, harmonics, and unbalance reporting
- Underground cable fault location and repair — TDR and sheath testing
- Feeder load balancing and network reconfiguration advisory
How BARREL O&M Works — Phase by Phase
From the moment BARREL takes O&M responsibility for a plant, a structured, transparent, and technology-driven maintenance process begins — keeping every asset performing at peak for decades.
Plant Takeover & Baseline Assessment
When BARREL assumes O&M responsibility for a plant — whether newly commissioned by BARREL EPC or taken over from another operator — we begin with a comprehensive baseline assessment to establish the true condition and performance starting point.
- Plant walkdown inspection — all electrical, mechanical, and civil systems
- Documentation review — as-built drawings, equipment manuals, and test records
- SCADA and monitoring system check — all data points verified and validated
- Equipment history review — previous maintenance records and outstanding defects
- Spare parts inventory audit — critical and insurance spares verification
- Baseline performance measurement — PR, availability, and heat rate (if thermal)
- O&M plan preparation — annual maintenance schedule, resource plan, and KPI targets
- HSE baseline assessment — site safety conditions and emergency plan review
24/7 Monitoring & Real-Time Operations
BARREL's monitoring operations centre provides continuous, real-time surveillance of every plant asset — detecting anomalies, raising alarms, and dispatching field teams before problems escalate into costly failures.
- SCADA monitoring — all generation, storage, and grid parameters in real time
- Alarm management — priority-classified alerts with defined response actions
- Daily generation report — actual vs. P50 / P75 target with variance analysis
- Energy loss analysis — downtime categorisation and loss attribution
- Grid metering monitoring — energy export, reactive power, and billing verification
- Remote plant control — start/stop, setpoint adjustment, and fault reset
- Weather-normalised performance tracking — PR, CUF, and availability
- Predictive alert generation — deviation from expected performance curves
Preventive Maintenance
Scheduled, time-based preventive maintenance is the cornerstone of long-term plant reliability — servicing every component before it degrades to a failure state, according to a structured annual maintenance plan.
- Daily checks — visual inspection, cleaning, security, and operational parameters
- Weekly activities — inverter check, tracker lubrication, BESS SOC, and data download
- Monthly tasks — string testing, transformer oil level, WTG vibration check
- Quarterly servicing — mechanical servicing, earthing test, protection relay check
- Annual maintenance — major equipment service, oil testing, HV cable IR, thermal imaging
- Biennial overhaul — major rotating equipment inspection, bearing replacement, oil flush
- 5-yearly major overhaul — turbine runner removal, generator rewind inspection
Predictive Maintenance & Condition Monitoring
BARREL deploys advanced predictive maintenance techniques — monitoring the condition of equipment in real time and detecting failure signatures before they progress to breakdown — dramatically reducing unplanned downtime and repair cost.
- Thermographic infrared imaging — hot spots on modules, connections, switchgear, and transformers
- Vibration analysis — WTG gearbox, generator bearing, and pump vibration trend monitoring
- Oil analysis — transformer DGA, gearbox particle count, and viscosity testing
- Ultrasonic testing — partial discharge in HV cables, GIS, and transformers
- IV curve tracing — solar module degradation, shading, and bypass diode failure detection
- Drone-based aerial inspection — solar panels, wind turbine blades, and transmission lines
- Motor current signature analysis (MCSA) — detecting rotor and bearing faults in motors
- SCADA trend analysis — early anomaly detection using historical performance patterns
Corrective Maintenance & Emergency Response
When faults occur, BARREL's response is fast, structured, and technically competent. Our field engineers carry the right tools, the right spare parts, and the right knowledge to restore plant operation in the shortest possible time.
- 24/7 emergency response — guaranteed field dispatch within defined response time
- Fault diagnosis — root cause identification using SCADA data, site inspection, and testing
- Emergency repair — temporary and permanent repair to restore generation
- Spare parts supply — critical spares maintained on site; fast delivery of additional parts
- OEM coordination — warranty fault reporting, OEM engineer mobilisation support
- Corrective action report — every fault documented with cause, action, and prevention plan
- Plant restart protocol — systematic restart sequence after fault rectification
Performance Management & Optimisation
Beyond simply maintaining equipment, BARREL actively manages plant performance — analysing every generation shortfall, identifying optimisation opportunities, and implementing improvements that increase revenue for the plant owner year on year.
- Monthly performance report — generation, PR, CUF, availability, and revenue impact
- Annual performance audit — detailed vs. P50 analysis, loss waterfall, and improvement plan
- Energy loss categorisation — downtime, soiling, shading, clipping, and degradation losses
- Module cleaning frequency optimisation — soiling rate analysis and ROI calculation
- Inverter optimisation — MPPT tuning, reactive power setpoint, and curtailment analysis
- WTG power curve verification — actual vs. OEM guarantee comparison
- Refurbishment and upgrade advisory — re-powering, inverter replacement, tracker retrofit
Regulatory Compliance & Statutory Maintenance
Every power plant has ongoing regulatory obligations — from electrical inspections and emission reports to nuclear safety reviews and grid code compliance submissions. BARREL manages every statutory requirement as part of the O&M scope.
- Electrical installation periodic testing — CEI inspection preparation and coordination
- Boiler statutory inspection — Chief Inspector of Boilers (CIB) annual examination
- Factory licence renewal and Factories Act compliance maintenance
- Grid code compliance — reactive power, frequency response, and availability reporting
- CEMS data validation and emission compliance reporting to SPCB
- Radiation safety reports and AERB annual safety review (nuclear plants)
- Dam safety monitoring reports to CWC / State Dam Safety Authority (hydro/PHS)
24/7 SCADA & Remote Monitoring
BARREL's integrated monitoring platform provides real-time visibility across every plant parameter — from individual solar string performance to transformer oil temperature, WTG vibration signature, BESS cell voltage, and grid metering data. Every plant, every asset, one platform, around the clock.
Our monitoring operations centre operates 24 hours a day, 365 days a year — staffed by trained monitoring engineers who respond to alarms, initiate corrective actions, and dispatch field teams when physical intervention is required. Remote access to plant control systems allows many faults to be diagnosed and resolved without a site visit.
- String-level solar monitoring — individual string current, voltage, and power
- Inverter performance dashboard — efficiency, clipping, and fault status
- WTG individual performance — power curve, vibration, and alarm log
- BESS cell-level monitoring — voltage, temperature, SOC, and SOH
- Transformer DGA trend monitoring — hydrogen, acetylene, and CO gas trends
- Generation vs. P50 / budget tracking — daily, monthly, and annual
- Grid metering — energy export, reactive power, and quality parameters
- Weather station data — irradiance, wind speed, temperature, and humidity
- Mobile dashboard — plant status accessible on any device, anywhere
Monitoring Data Flow
Plant Field Instruments
Sensors, meters, and controllers at every generation source and storage asset
Site SCADA / RTU / DAS
Data acquisition and local control — plant-level monitoring and control
Secure Data Transmission
Encrypted data over GPRS / fibre / satellite to BARREL monitoring centre
BARREL Monitoring Operations Centre
24/7 staffed — alarm response, performance analysis, dispatch coordination
Owner Dashboard & Reports
Real-time access, daily reports, and monthly performance statements to plant owner
AMC Packages — Tailored to Your Plant
BARREL's AMC packages provide plant owners with predictable, comprehensive maintenance coverage — eliminating budget uncertainty and ensuring expert servicing of every plant system on a planned, contractual basis. Choose the package that fits your plant's needs and operational model.
Scheduled Visits Package
A cost-effective AMC covering defined scheduled maintenance visits — ideal for plant owners who maintain their own on-site operations team and require specialist BARREL servicing for defined activities only.
- Quarterly scheduled maintenance visits (4 per year)
- Annual major service — all equipment and systems
- Annual thermographic inspection — full plant
- Annual string / inverter testing and report
- Annual performance audit and loss analysis report
- Annual transformer oil testing (DGA)
- Annual protection relay secondary injection test
- Remote monitoring — data access and monthly report
- Emergency call-out — response within 8 hours (additional cost)
Full Maintenance Package
A comprehensive AMC covering all scheduled maintenance, 24/7 remote monitoring, and emergency response — the most popular package for plant owners seeking complete O&M coverage without managing their own maintenance team.
- All Basic AMC scope included
- Monthly scheduled site visits (12 per year)
- 24/7 SCADA remote monitoring — real-time alerts
- Emergency response — site dispatch within 4 hours
- Daily generation report to owner
- Corrective maintenance — labour included
- Module cleaning — frequency per soiling assessment
- Spare parts management — critical stock at site
- Regulatory inspection coordination
- Monthly performance report — PR, availability, losses
All-Inclusive Performance Contract
The ultimate O&M partnership — a comprehensive, all-inclusive AMC covering every maintenance activity, all spare parts, 24/7 monitoring, unlimited emergency response, and a guaranteed minimum availability commitment from BARREL.
- All Standard AMC scope included
- Resident BARREL O&M team on site full-time
- All spare parts included — critical and consumable
- Predictive maintenance programme — thermography, vibration, DGA
- Drone inspection — quarterly aerial survey of all assets
- Availability guarantee — contractual minimum availability commitment
- Performance guarantee — generation above contractual minimum
- All regulatory compliance and statutory inspections managed
- Major overhaul planning and execution included
- Annual refurbishment advisory and upgrade recommendations
BARREL O&M — Key Performance Metrics
BARREL O&M performance is measured against agreed KPIs — transparently reported to plant owners on a monthly basis with full variance analysis and corrective action plans for any shortfall.
Every % of Downtime Costs Crores
A 100 MW solar plant running at 95% availability generates approximately 5% less annual revenue than the same plant at 99.5% availability. Over 25 years, that 4.5% performance gap compounds into a staggering lifetime revenue shortfall — often exceeding the entire cost of professional O&M over the same period.
BARREL O&M is not a cost. It is the highest-return investment an energy project owner can make — protecting every unit of generation in the P50 projection and maximising the return on the project's capital investment for its entire operating life.
Performance = Revenue
Every percentage point of PR or availability translates directly to generation revenue. BARREL O&M keeps your plant generating at design — for 25 years.
Early Detection Saves Millions
A single transformer failure caught by DGA analysis before failure avoids crores in replacement cost, lost generation, and insurance claims. Predictive maintenance pays for itself many times over.
Planned is Always Cheaper
A planned bearing replacement costs a fraction of an unplanned emergency bearing failure with associated rotor damage. Preventive maintenance is the most cost-effective form of asset management.
Bankability & Refinancing
Plants with professional, documented O&M records command lower risk premiums in refinancing — directly improving the cost of capital and investor returns through the plant's operational life.
Eight Reasons to Choose BARREL O&M
BARREL O&M combines the technical depth of an EPC builder, the insight of a manufacturer, and the discipline of a professional asset manager — delivering measurably superior plant performance for every owner we serve.
Builder's Knowledge
BARREL maintains the plants it builds. Our O&M engineers know every system and every installation decision — because our EPC team made them. That knowledge makes every maintenance activity faster, more accurate, and more effective.
All Technologies
One O&M partner for solar, wind, hydro, nuclear, BESS, thermal, transmission, and distribution — no need to manage multiple specialist maintenance contractors across a diverse portfolio.
24/7 Monitoring
BARREL's monitoring operations centre never sleeps. Every alarm is responded to, every performance deviation is flagged, and field engineers are dispatched at any hour when needed.
Predictive Maintenance
Thermography, vibration analysis, oil DGA, IV curve tracing, and drone inspection — BARREL's predictive maintenance programme detects failures before they become expensive emergencies.
In-House Spare Parts
As a manufacturer of BESS, inverters, modules, and structures, BARREL has direct access to critical spare parts — reducing lead times and ensuring availability when components need replacement.
Transparent Reporting
Monthly performance reports, real-time owner dashboards, and annual audits — plant owners always have complete visibility of exactly how their asset is performing and how it compares to targets.
Zero-Harm Safety Culture
Every BARREL-operated site runs under a comprehensive HSE management system — protecting our technicians, the plant, and the surrounding community with a safety culture embedded from the top.
ESG Operational Compliance
Environmental monitoring, waste management, community engagement, and Manee Foundation equity — BARREL O&M ensures every plant remains ESG-compliant throughout its operational life.
What Plant Owners Experience
BARREL O&M and AMC clients experience a fundamentally different kind of maintenance relationship — one built on transparency, performance accountability, and a genuine shared interest in maximising every plant's lifetime generation.
Maximum Generation
Every maintenance decision is made with one objective — keeping the plant generating at or above P50 target. Downtime is minimised. Performance is protected. Revenue is maximised.
Predictable Costs
AMC pricing gives plant owners complete O&M budget certainty — no surprise maintenance bills, no emergency expenditure outside the contract, no budget overruns.
Complete Visibility
Real-time monitoring dashboards and monthly performance reports give owners full visibility of exactly how their plant is performing — from anywhere, at any time, on any device.
Bankability & Compliance
Professional O&M records, statutory compliance management, and independent annual audits — all the documentation that lenders, insurers, and regulators require, maintained and delivered by BARREL.
Long Life, Strong Returns
Plants maintained by BARREL consistently perform closer to their design life and yield projections — translating directly into stronger investor returns and higher asset valuations at refinancing or sale.
Peace of Mind
When BARREL manages your O&M, plant owners can focus on what they do best — investment and development — while BARREL ensures the asset performs, every day, without exception.
Maximise Your Plant's Lifetime Performance
Whether you are commissioning a new plant and need seamless O&M from day one, seeking an AMC for an existing asset, or looking to improve performance of an underperforming plant — BARREL's O&M team is ready to take responsibility. Let's protect your investment together.