Maharashtra is India’s most industrialised state, and rooftop solar is growing across all segments — residential PM Surya Ghar installations, commercial buildings in Pune and Mumbai, and industrial rooftops across MIDC estates. The state has three distribution companies (MSEDCL, Tata Power, Adani Electricity), each with its own process under the single regulatory authority of MERC.
MERC Net Metering Regulations
The Maharashtra Electricity Regulatory Commission (MERC) has issued net metering regulations that apply across all three DISCOMs in the state. Key features:
Residential net metering: Up to the consumer’s sanctioned load. A household with a 5 kW sanctioned load can install up to 5 kW net-metered solar.
Commercial net metering: Up to 1 MW. Above 1 MW, open access or net billing arrangements under MERC’s separate regulations apply.
Group Net Metering: MERC has a clear framework for Group Net Metering, enabling housing societies and commercial complexes with multiple tenants to apply for a common rooftop installation and distribute credits across member meters.
Export rate: The DISCOM’s APPC, set annually by MERC. MSEDCL’s APPC has been approximately Rs. 3.60 to Rs. 4.10 per unit in recent years — among the mid-range nationally.
Settlement: Monthly in the standard MSEDCL billing cycle. Surplus credits in any month are carried to the next month; annual reconciliation resets the credit balance.
MSEDCL: The Main DISCOM
MSEDCL (Maharashtra State Electricity Distribution Company Limited) serves most of Maharashtra’s 29 districts and is India’s largest distribution company by customer count.
Online portal: MSEDCL has an online rooftop solar application system where installers and consumers can submit applications, track status, and receive communication electronically.
Application process: Submit through the MSEDCL consumer portal with:
- Consumer account number and electricity bill
- Load sanction letter
- Site plan and rooftop layout
- Single-line diagram
- Module and inverter BIS certificates and ALMM declarations
- Proof of ownership
Feasibility check: MSEDCL reviews transformer loading in the consumer’s area. In densely populated Pune, Nagpur, and Nashik residential areas, transformer saturation is a documented issue. In rural Maharashtra and MIDC industrial areas, transformer capacity is usually not a constraint.
Timeline: Feasibility sanction typically takes 20–35 days for online applications. Net meter installation after commissioning: 30–50 days.
Tata Power Solar (Mumbai)
Tata Power is the distribution licensee for central Mumbai and serves approximately 7 lakh consumers in Mumbai’s core areas.
Application process: Separate from MSEDCL. Tata Power has its own rooftop solar application process through its consumer services portal.
Net metering: MERC net metering regulations apply. Export rate is at Tata Power’s APPC (may differ slightly from MSEDCL’s APPC).
Notable: Mumbai’s high commercial density means Tata Power’s network has significant commercial rooftop solar potential. Building Management Systems (BMS) integration with solar is more common in Tata Power’s Mumbai territory than in MSEDCL’s areas.
Adani Electricity Mumbai
Adani Electricity Mumbai Limited (formerly BEST supply distribution) serves parts of Mumbai including some western suburbs and areas previously served by BEST.
Application: Adani Electricity has its own rooftop solar application process. MERC net metering rules apply.
Note: Adani Electricity’s territory within Mumbai has relatively high-density residential and commercial buildings, many of which are suitable for rooftop solar with Group Net Metering for housing societies.
MEDA and State Solar Schemes
MEDA (Maharashtra Energy Development Agency) is the state nodal agency coordinating Maharashtra’s renewable energy development.
MEDA’s role in solar:
- Empanels vendors for PM Surya Ghar and state solar schemes
- Administers MNRE and state subsidy programmes
- Coordinates agri-solar (PM-KUSUM) in Maharashtra
- Runs energy efficiency and solar awareness programmes
- Oversees the Maharashtra Solar Policy implementation
State subsidies: Maharashtra has periodically offered state-level subsidies for specific categories (government buildings, agricultural pump solarisation) through MEDA. For residential consumers, PM Surya Ghar central CFA is the primary subsidy — additional state top-ups for residential are not consistently available. Check current MEDA notifications.
Maharashtra Solar Policy 2023–2028
Maharashtra’s Solar Policy 2023–2028 sets targets for:
- Utility-scale solar development
- Rooftop solar across residential, commercial, and industrial segments
- Agri-solar (solar pumps and agri-land solar)
- Storage integration
For installers, the policy’s emphasis on commercial-industrial solar and the state’s intent to expand open access for large consumers signals long-term market demand, particularly in Maharashtra’s large MIDC industrial estates.
Group Net Metering in Maharashtra
MERC’s Group Net Metering framework is particularly relevant in Maharashtra given the state’s large housing society segment. Key points:
How it works in practice: A housing society installs a solar system on the common terrace or common area. The generation is credited across individual flat meters in pre-agreed proportions. The society applies to MSEDCL as the group applicant.
Size: Limited to the aggregate sanctioned load of all participating connections.
Credit distribution: MSEDCL bills each member based on their individual net consumption (import minus their share of the group generation credit).
Pro Tip: Group Net Metering Is Underused in Maharashtra
Large housing societies in Pune, Mumbai suburbs, and Nashik represent a significant Group Net Metering opportunity that many installers overlook because the application process is more complex than individual residential. Use solar proposals software that can model group net metering credits per member flat to demonstrate economics clearly. Societies that understand individual flat-level savings convert more reliably.
Common MSEDCL Application Issues
Transformer saturation in Pune and Mumbai suburbs: The most common cause of reduced system size approvals in Maharashtra’s urban areas. Conduct informal transformer loading checks with the local MSEDCL sub-division before committing to large system sizes.
Monthly settlement limits benefit: Unlike Gujarat’s annual settlement, MSEDCL’s monthly settlement means summer surplus is not banked for winter. This affects the economics calculation — particularly for consumers with flat year-round consumption. Factor this into proposal modelling.
ALMM delisting risk: For projects with longer timelines (institutional, housing society projects that take months to finalise), verify ALMM status at commissioning, not just at design stage.
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Frequently Asked Questions
Which DISCOM handles most of Maharashtra?
MSEDCL covers most of Maharashtra. Tata Power covers central Mumbai. Adani Electricity covers parts of Mumbai. Each has its own application process under MERC regulation.
What is the MSEDCL export rate?
MSEDCL’s APPC is approximately Rs. 3.60–4.10 per unit (set annually by MERC). Monthly settlement applies.
What is the net metering limit?
Residential: up to sanctioned load. Commercial: up to 1 MW. Group Net Metering available for housing societies under MERC’s framework.
What is MEDA?
Maharashtra Energy Development Agency — the state nodal body for renewable energy, responsible for vendor empanelment, PM Surya Ghar coordination, and state solar policy implementation.
