India is exploring the launch of a Solar Battery Health Scoring System in 2026 to help homeowners better manage their energy storage systems as hybrid rooftop installations rapidly increase across the country. Sources told SolSetu that MNRE and industry partners are currently studying global battery performance models to design India's first health index for residential solar batteries.

The scoring system would evaluate the condition, efficiency, and remaining lifespan of lithium-ion and advanced lead-acid batteries used in rooftop systems.

Why Battery Health Scoring Is Necessary

With the growing popularity of hybrid systems, consumers often face uncertainties regarding:

• Battery degradation rate
• Backup time reduction over years
• Charging irregularities
• Premature battery failures
• Lack of standardized health reporting

An MNRE official said, “A national battery health scoring mechanism will enable homeowners to make informed maintenance and replacement decisions.”

How the Scoring System May Work

The proposed scoring system may assign a rating (0–100) based on:

• Cycle count and depth-of-discharge
• Temperature exposure
• Charging efficiency
• Voltage stability
• Cell balance and internal resistance
• Historical performance trends
• Ambient environmental data

Scores may be displayed within inverter apps, DISCOM dashboards, or MNRE’s national solar portal.

Benefits for Homeowners

A standardized health index may provide:

• Accurate prediction of battery replacement time
• Improved backup reliability
• Lower long-term maintenance costs
• Better inverter-battery compatibility insights

Installers may also use the scoring system to detect issues early and reduce warranty claim delays.

Pilot Launch Expected in 2026

Pilot testing may begin in states with high adoption of hybrid systems:

• Maharashtra
• Tamil Nadu
• Karnataka
• Uttar Pradesh
• Gujarat

National rollout may follow by late 2026.

SolSetu will continue monitoring this proposal and share updates as MNRE finalizes the evaluation framework.