Net Metering in Maharashtra 2026 — Why Your Rooftop Solar Needs a Battery
TL;DR: Maharashtra's MSEDCL caps net metering at 10 kW for most residential/small commercial consumers. If you generate 12 kWp solar, the excess 2 kW at midday has nowhere to go (can't export, can't sell). BESS solves this: store the excess, use at night. BESS becomes mandatory for any rooftop > 10 kW in Maharashtra.
The Maharashtra Net-Metering Cap
MSEDCL (Maharashtra State Electricity Distribution Company) policy:
- Residential & small commercial (LT feeders): Net metering up to 10 kW
- Beyond 10 kW: Export is blocked (DISCOM refuses to feed the power back)
- Solution: Install a battery to store the excess
Why the Cap Exists
MSEDCL is worried about grid stability. Congested feeders (especially in Pune, Mumbai suburbs) could face voltage sags if too many rooftops are simultaneously exporting. The 10 kW cap is MSEDCL's way of throttling distributed solar exports.
This is not unique to Maharashtra, but Maharashtra's cap is lower than other states (Gujarat allows 100 kW, Tamil Nadu 50 kW).
The Impact: Wasted Solar
A typical Pune textile MSME installs 30 kWp solar. At midday (11 AM–1 PM), all 30 kW is generated.
- First 10 kW: Feeds into the load + exported to grid (permitted)
- Next 20 kW: Wasted (inverter curtails it, or pushes it to a battery if you have one)
Daily waste: 20 kW × 2 hours × 365 days = 14,600 kWh/year wasted = ₹15–20L in foregone revenue or self-consumption.
The BESS Solution: Mandatory for Maharashtra > 10 kW
Instead of curtailing that 20 kW, install a battery:
- Midday 20 kW charges the IZ-60K battery to full (2–3 hours to charge 120 kWh)
- Evening (5 PM–10 PM): Battery discharges at peak tariff (₹9.50/unit commercial)
- Result: You use that "wasted" solar at premium evening rates
Financial impact:
- Daytime solar generated but not used: ₹0
- Same solar stored in battery, used at night: ₹9.50/unit revenue (or ₹9.50/unit savings if you avoid grid purchase)
Effective value of the 20 kWp solar jumps from ₹0 to ₹9.50L/year with battery.
Pune Textile Mill Case Study
30 kWp solar installed, MSEDCL cap at 10 kW:
Scenario A: Solar only (no battery)
- 10 kW exported (worth ₹5–6/unit): ₹18L/year
- 20 kW wasted (worth ₹0): ₹0
- Total value: ₹18L/year
- Annual bill reduction: 40%
Scenario B: 30 kWp + IZ-60K battery
- 10 kW exported: ₹18L/year
- 20 kW stored, discharged at ₹9.50/unit evening: ₹75L/year additional value
- Total value: ₹93L/year
- Annual bill reduction: 75%
Capex difference: IZ-60K = ₹70L. Value created: ₹75L/year. Payback: 11 months. (Plus the solar capex, which is ₹1.5–2L per kWp in Maharashtra, but net metering ROI still works.)
MSEDCL's Attitude Toward BESS
Interestingly, MSEDCL is okay with BESS-paired systems > 10 kW. The policy says:
"Systems with battery storage may be allowed above 10 kW if the battery ensures zero export during peak hours."
Translation: BESS proves you're not dumping solar back into the grid. It stabilizes the system. MSEDCL approves these quickly.
Net Metering Across Maharashtra's DISCOMs
| DISCOM | LT Cap | HT Cap | BESS Support |
|---|---|---|---|
| MSEDCL (Vidarbha + West) | 10 kW | None | Conditional yes |
| BEST (Mumbai) | 10 kW | 100 kW | Not explicitly mentioned |
| Others | Varies | Varies | Varies |
Most Maharashtra distribution companies follow MSEDCL's 10 kW cap for LT.
How to Proceed (Pune MSME Owner)
- Assess your current load + planned solar: If > 10 kWp, plan for BESS from day one.
- Apply for DISCOM net metering + battery approval: Single application, joint approval.
- Size BESS to store all daytime excess: Use our sizing calculator.
- Claim subsidies: MNRE CAPEX (30%) + MSEDCL incentive (if available).
- Go live: DISCOM inspection, synchronization testing, live within 4–6 weeks.