When you sign a solar O&M contract, you are trusting a provider to protect an asset that cost Rs. 30 lakh to Rs. 5 crore. Knowing exactly what should be in that contract is critical.
What a Solar O&M Contract Should Cover
When you sign a solar O&M contract, you are trusting a provider to protect an asset that cost Rs. 30 lakh to Rs. 5 crore. Knowing exactly what should be in that contract is the difference between an asset that performs and one that slowly loses value.
1. Scheduled Preventive Maintenance Visits
This is the core of any O&M contract. Look for:
- Frequency: At minimum quarterly (4x/year) for commercial plants; monthly for industrial plants above 1MW
- Scope per visit: Panel cleaning, visual inspection, connection checks, inverter review
- Documentation: Before/after photos, checklists with technician sign-off, and customer-accessible reports
2. Remote Performance Monitoring
Real-time monitoring is non-negotiable for any plant above 20kW. The contract should specify:
- Monitoring platform: Who owns it, how you access it, what data it shows
- Alert thresholds: What triggers an alert (e.g., generation drop more than 15% from expected)
- Response to alerts: What action is taken within what timeframe
3. Emergency Response and SLAs
Every O&M contract should define response times in writing:
- Critical faults (full plant shutdown): On-site within 4 hours
- Major faults (more than 25% generation loss): On-site within 24 hours
- Minor faults (monitoring anomalies): Investigated within 48 hours
SolarTrust guarantees sub-4 hour emergency response across our Delhi NCR service area for all AMC clients.
4. Annual Safety Audit
Once per year, the contract should include a comprehensive electrical and structural safety inspection covering insulation resistance testing, earth fault testing, cable condition inspection, mounting structure integrity, and MCB/fuse verification.
5. Reporting and Transparency
A professional O&M contract should define:
- Monthly performance reports: Actual vs. expected generation, PR ratio, specific yield
- Service completion reports: After every visit, with photo evidence
- Annual summary report: Year-over-year performance and maintenance history
- Client portal access: Always-on access to live data and maintenance records
6. What Should NOT Be in an O&M Contract
- Equipment supply at inflated rates: Spare parts should be billed at cost or market rate
- Automatic renewal without notice: You should receive 30–60 days notice before renewal
- Exclusions for consumables: Cleaning materials should be included
Checklist: Evaluating a Solar O&M Contract
- [ ] Visit frequency and scope defined per visit
- [ ] Before/after photo documentation specified
- [ ] Remote monitoring platform identified
- [ ] Emergency response SLAs in writing
- [ ] Annual safety audit included
- [ ] Monthly and annual reporting defined
- [ ] Client portal access guaranteed
- [ ] Spare parts billing methodology clear