MSEDCL Solar Net Metering Guide for Maharashtra Industry (2026)

Direct Answer

The bottom line is that Maharashtra industrial consumers can install rooftop solar up to 5 MW (or their sanctioned/contract demand, whichever is lower) under net metering, with surplus energy carried forward month to month and settled annually at the MERC-approved generic rooftop solar tariff of ₹2.82 per kWh for FY 2026-27. For systems above 10 kW sanctioned load, MSEDCL levies grid support charges of ₹1.96 per unit (LT) and ₹1.42 per unit (HT) on total solar generation, effective April 1, 2026. The old 12% banking deduction has been abolished.

In short, Maharashtra's net-metering framework for industry is governed by the MERC Grid Interactive Rooftop Renewable Energy Generating Systems Regulations (2019, as amended in 2023 and 2024) and implemented by MSEDCL through Commercial Circular 258 and its amendments. The application timeline for industrial systems is approximately 60 days from submission to net-meter installation, compared to about 20 days for residential systems under 10 kW.

This means factories in MIDC estates across Pune, Nashik, Aurangabad, Nagpur, and other industrial belts can significantly reduce their electricity costs by installing rooftop solar under net metering, provided they stay within the sanctioned-load ceiling and comply with MSEDCL's technical standards. For broader context on how Maharashtra compares with other states, see our net metering policy India guide and our overview of commercial and industrial solar trends.

Key Takeaways

Here is what you will learn in this guide:

• Capacity cap: Net metering is allowed up to 5 MW or your sanctioned/contract demand, whichever is lower (MERC First Amendment, 2023)
• Grid support charges: ₹1.96/unit for LT consumers and ₹1.42/unit for HT consumers on total solar generation, applicable above 10 kW sanctioned load (effective April 1, 2026)
• Banking deduction abolished: The previous 12% banking deduction on surplus exports ended March 31, 2026; all exported units now carry forward in full
• Annual settlement rate: Surplus credits at financial year-end are settled at ₹2.82 per kWh (MERC generic rooftop solar tariff for FY 2026-27)
• APPC for gross metering: ₹5.40 per kWh for MSEDCL (FY 2026-27), applicable to gross-metered rooftop systems commissioned during the year
• Application timeline: Approximately 60 days for industrial systems, compared to 20 days for residential systems under 10 kW
• Simultaneous open access and net metering: MERC has confirmed that consumers can avail both rooftop net metering and open access simultaneously (DOA Second Amendment Regulations, 2023)
• Transformer capacity constraint: Cumulative solar capacity cannot exceed 40% of the local distribution transformer capacity

Verified Regulatory Snapshot

What Is Net Metering and How Does It Work for Maharashtra Industry?

Net metering is a billing arrangement that allows rooftop solar system owners to export surplus electricity to the grid and import it back when their solar generation is insufficient. For industrial consumers in Maharashtra, this means a factory that generates more solar power than it consumes during daytime hours can bank those excess units with MSEDCL and draw them back during nighttime or cloudy periods.

The bidirectional net meter records both import (electricity drawn from the grid) and export (electricity sent to the grid). At the end of each billing cycle, MSEDCL calculates the net consumption (import minus export). If the factory exported more than it imported, the surplus is carried forward as energy credits to the next billing period.

To summarize, the key mechanism works as follows: solar generation is first consumed on-site, surplus is exported to the grid and credited at the applicable rate, and any remaining credits at financial year-end (March 31) are settled at the generic rooftop solar tariff of ₹2.82 per kWh for FY 2026-27. This framework is designed to encourage self-consumption while providing a safety net for excess generation. If you are evaluating different solar procurement models, our solar provider India guide and RESCO OPEX solar model India article provide useful comparisons.

MERC Net-Metering Capacity Limits for Industrial Consumers

The 5 MW Cap

MERC raised the net-metering capacity cap from 1 MW to 5 MW through the Grid Interactive Rooftop Renewable Energy Generating Systems (First Amendment) Regulations, 2023. This was a significant change aimed at promoting rooftop solar adoption in the commercial and industrial sectors. However, the permitted system size cannot exceed the consumer's sanctioned or contract demand, whichever is lower.

This means a factory with a sanctioned load of 2 MW can install up to 2 MW of rooftop solar under net metering, not the full 5 MW. If the factory wants to install a larger system, it must first apply to MSEDCL for load enhancement.

Voltage-Level Breakpoints

MSEDCL follows specific voltage-level guidelines for rooftop solar interconnection:

HT consumers (11 kV and above) may install rooftop solar PV systems at their LT bus bar, but the net meter must be installed on the HT side of the transformer in such cases.

Transformer Capacity Constraint

The cumulative capacity of all solar systems connected to a particular distribution transformer cannot exceed 40% of the transformer's rated capacity. In densely populated areas like Pune, Nagpur, and Nashik, transformer saturation has been a documented issue. However, in rural Maharashtra and MIDC industrial estates, transformer capacity is usually not a constraint. Solar PV installation beyond 40% of DTC rated capacity may be allowed upon completion of a detailed load study on the specific transformer.

FY 2026-27 Tariffs and Grid Support Charges

Grid Support Charges: The Major Change for Industry

Effective April 1, 2026, MSEDCL introduced grid support charges for consumers with sanctioned loads above 10 kW. The previous 12% banking deduction on surplus exports was abolished as of March 31, 2026, and replaced with these charges on total solar generation:

The bottom line is that this represents a shift from taxing only surplus exports to charging on total generation. For example, if an LT industrial system generates 500 units in a month, the grid support charge would be ₹980 (500 units multiplied by ₹1.96 per unit), regardless of how much is consumed on-site versus exported.

HT Industrial Energy Charges (FY 2026-27)

Under the MERC MYT Order for the 5th Control Period (FY 2025-26 to FY 2029-30), the HT I(A) industrial energy charge for FY 2026-27 is ₹7.11 per kVAh, with a demand charge of ₹565 per kVA per month. The overall average tariff for HT-Industry is projected to be approximately ₹9.00 per unit for FY 2026-27, a reduction of about 15% from the previous control period.

ToD Tariff Structure

The revised Time-of-Day (ToD) tariff structure, effective from the MERC MYT Order, includes significant rebates during solar hours and higher charges during peak hours. This is particularly relevant for industrial consumers with rooftop solar, as it enhances the value of self-consumption during solar generation hours.

In short, the ToD structure rewards industrial consumers who consume power during solar hours (09:00 to 17:00) with rebates, while penalizing peak-hour consumption. This makes rooftop solar particularly attractive for single-shift or double-shift factories that have significant daytime load.

Settlement Rules and Banking

Monthly Net Metering Settlement

MSEDCL follows a monthly billing cycle for net-metered consumers. Each month, the net consumption (import minus export) is calculated. If the factory consumed more than it exported, it pays for the net consumption at the applicable tariff. If the factory exported more than it consumed, the surplus units are carried forward as energy credits to the next billing period.

Annual Settlement

At the end of the financial year (March 31), any remaining surplus credits that have not been consumed are settled at the MERC-approved generic rooftop solar tariff. For FY 2026-27, this rate is ₹2.82 per kWh. For example, if a factory has 200 surplus units at year-end, MSEDCL credits ₹564 to the consumer's account.

This means the annual settlement rate is significantly lower than the applicable industrial tariff (approximately ₹7-9 per unit for HT consumers). The incentive is to size the solar system to match consumption rather than to maximize exports, since surplus units settled at ₹2.82 per kWh are worth much less than the avoided cost of grid power.

Banking for Open Access Consumers

For consumers availing both net metering and open access simultaneously (permitted under MERC DOA Second Amendment Regulations, 2023), banked energy can be utilized in all hours except peak hours (17:00 to 24:00). This is a critical distinction from pure net-metered consumers, who face no time restriction on utilizing banked energy (for residential consumers) or follow the standard monthly/annual settlement cycle.

To summarize, if you are a large industrial consumer considering both rooftop solar and open-access solar, the interaction between net-metering settlement and open-access banking rules needs careful modeling. Our open access solar India guide and solar open access state comparison India 2026 articles provide detailed frameworks for this analysis.

The MSEDCL Application Process for Industrial Net Metering

Step-by-Step Process

The MSEDCL net-metering application for industrial consumers follows these stages:

Step 1: Apply on the PM Surya Ghar National Portal (if applicable) Register on the PM Surya Ghar Muft Bijli Yojana portal using your mobile number and MSEDCL consumer number. Submit the rooftop solar application. Note that the PM Surya Ghar scheme is primarily for residential consumers; industrial consumers should apply directly through the MSEDCL RTS portal.

Step 2: Submit the application on the MSEDCL RTS portal Submit the rooftop solar application on the MSEDCL Rooftop Solar (RTS) portal. The application is routed to the correct MSEDCL field office for processing.

Step 3: Wait for the sanction letter MSEDCL reviews the application for technical feasibility, including system size versus sanctioned load compliance, transformer capacity, and grid connectivity. MSEDCL conveys approval within 7 working days of completing the feasibility study. The approval is valid for 6 months from the date of approval.

Step 4: Install the rooftop solar system After receiving approval, the selected installer completes the solar plant installation. The installer must be MNRE or MEDA certified for MSEDCL to approve net metering.

Step 5: Upload documents and complete MSEDCL site inspection Upload required documents to the MSEDCL RTS portal. MSEDCL officials visit the property to verify the installation through a joint inspection report. For systems above 20 kW AC capacity, CEIG (Chief Electrical Inspector General) approval is required, which can add 20 to 45 working days.

Step 6: Get the net meter installed After the site inspection is approved, the AMISP (third-party agency) installs the net meter or smart meter. Once installed, the solar system starts operating under monthly import and export billing.

Required Documents

• Net metering application form (from MSEDCL portal)
• Latest MSEDCL electricity bill (showing consumer number and sanctioned load)
• Aadhaar Card and PAN Card of the property owner
• Property ownership proof (title deed, property tax receipt, or society letter)
• Solar system technical specifications (panel make, inverter make, total capacity)
• Single-line diagram (SLD) of the solar installation
• Installation certificate from the MNRE/MEDA-certified installer
• Lease agreement with owner's NOC (if the property is rented)

Timeline Summary

The bottom line is that industrial consumers should plan for a 60 to 90 day timeline from application to net-meter activation, with CEIG approval being the most common delay factor. For help evaluating your solar project economics during this period, see our solar IRR calculation methodology India and solar panel ROI payback period India guides.

Simultaneous Net Metering and Open Access

A landmark MERC ruling in 2025 (Case No. 213 of 2025) confirmed that consumers with rooftop solar systems can simultaneously avail open access and net metering. This was established through the DOA (Second Amendment) Regulations, 2023, which deleted the earlier proviso mandating gross metering for rooftop solar during open access periods.

This means a factory with a 983 kW rooftop solar system (as in the HAPL case) and a contract demand exceeding 1 MVA can avail open access for part of its power procurement while simultaneously benefiting from net metering for its rooftop generation. MSEDCL is required to pass on corresponding credit adjustments in electricity bills for such consumers.

In short, this ruling removes a major barrier for large industrial consumers who previously had to choose between rooftop net metering and open-access solar procurement. For more on group captive structures that complement this approach, see our group captive solar India guide.

Common Errors and How to Avoid Them

Error 1: Exceeding Sanctioned Load

The most common rejection reason is sizing the solar system above the sanctioned load. MSEDCL recalculates this internally and rejects applications without negotiation if the system exceeds the limit. The fix is to reduce panel count or apply for load enhancement first.

Error 2: Incomplete Documentation

Missing documents, particularly the single-line diagram or installation certificate from a certified installer, cause significant delays. Ensure all 10 required documents are uploaded before submitting the application.

Error 3: Non-Certified Installer

MSEDCL will not approve net metering for systems installed by uncertified vendors. The installer must be registered with MNRE or MEDA. Always verify installer credentials before signing a contract. Our solar EPC company India guide helps you identify qualified EPC partners.

Error 4: Transformer Capacity Exhaustion

In densely populated industrial areas, the local distribution transformer may already be loaded at or near the 40% solar capacity threshold. Request a feeder capacity report from your MSEDCL Sub-Division before submitting the application to avoid delays.

Error 5: Ignoring Grid Support Charges in ROI Calculations

Many industrial consumers calculate their solar ROI without accounting for the new grid support charges (₹1.96/unit for LT and ₹1.42/unit for HT, applicable above 10 kW). This can significantly impact the payback period. Always model the grid support charge as a recurring cost on total generation, not just exports.

Frequently Asked Questions

What is the maximum rooftop solar capacity I can install under net metering in Maharashtra?

Net metering is allowed up to 5 MW or your sanctioned/contract demand, whichever is lower. MERC raised the cap from 1 MW to 5 MW through the First Amendment Regulations, 2023. You cannot exceed your sanctioned load; if you need a larger system, apply for load enhancement first.

What are the grid support charges for industrial solar in Maharashtra in FY 2026-27?

For consumers with sanctioned load above 10 kW, grid support charges are ₹1.96 per unit for LT consumers and ₹1.42 per unit for HT consumers, levied on total solar generation. Systems up to 10 kW are exempt from grid support charges. These charges became effective April 1, 2026, replacing the previous 12% banking deduction.

At what rate does MSEDCL settle surplus solar credits at financial year-end?

For FY 2026-27, surplus credits remaining at March 31 are settled at ₹2.82 per kWh, the MERC-approved generic rooftop solar tariff. This rate was notified through MERC's suo motu order dated March 30, 2026. The APPC rate for gross-metered systems is ₹5.40 per kWh for the same period.

Can industrial consumers avail both net metering and open access simultaneously?

Yes. MERC confirmed this through the DOA (Second Amendment) Regulations, 2023, and reinforced it in Case No. 213 of 2025. Consumers with rooftop solar can simultaneously avail open access, with net-metering adjustments applied to their open access bills. MSEDCL is directed to pass on corresponding credit adjustments.

How long does the MSEDCL net-metering approval process take for industrial systems?

For commercial and industrial systems, the process takes approximately 60 days from application to net-meter installation. Systems above 20 kW AC capacity require CEIG approval, which can add 20 to 45 working days. Residential systems under 10 kW typically take about 20 days.

What is the distribution transformer capacity limit for rooftop solar?

The cumulative capacity of all solar systems connected to a distribution transformer cannot exceed 40% of the transformer's rated capacity. Installations beyond 40% may be allowed after a detailed load study. In MIDC industrial estates, transformer capacity is usually not a constraint, but in densely populated urban areas, saturation can be an issue.

Do I need CEIG approval for my industrial rooftop solar system?

Yes, for systems above 20 kW AC capacity, CEIG (Chief Electrical Inspector General) approval is required in Maharashtra. The CEIG process runs through the Maharashtra CEIG office and requires a separate drawing set stamped by a licensed electrical contractor. CEIG approval can take 20 to 45 working days.

Can I install a rooftop solar system larger than my current sanctioned load?

No, you cannot install a rooftop solar system above your sanctioned load under net metering in Maharashtra. If you need a larger system, you must first apply to MSEDCL for load enhancement. Once the higher sanctioned load is approved, you can apply for a solar system size within the revised limit.

Primary Sources

1. MERC Grid Interactive Rooftop RE Regulations, 2019 (as amended 2023, 2024) - Maharashtra Electricity Regulatory Commission. URL: https://merc.gov.in/regulation_type/current-regulations-renewable-energy/

2. MERC suo motu order on generic rooftop solar tariff for FY 2026-27, dated March 30, 2026 - Reported by Saur Energy. URL: https://www.saurenergy.com/solar-energy-news/merc-sets-rooftop-solar-tariff-at-rs-282kwh-for-fy27-11439440

3. MERC MYT Order, Case No. 217 of 2024 (MSEDCL 5th Control Period, FY 2025-26 to FY 2029-30) - MERC Press Note. URL: https://merc.gov.in/wp-content/uploads/2025/03/Press-Note_MSEDCL-MYT-Order_English.pdf

4. MERC First Amendment Regulations, 2023 (5 MW cap increase) - Reported by Renewable Watch. URL: https://renewablewatch.in/2023/11/21/merc-increases-net-metering-cap-for-rooftop-solar-projects-to-5-mw/

5. MSEDCL RE Rooftop Net Metering page - Maharashtra State Electricity Distribution Co. Ltd. URL: https://www.mahadiscom.in/en/consumer/re-rooftop-net-metering/

6. MERC Order, Case No. 213 of 2025 (Simultaneous net metering and open access) - JMK Research. URL: https://jmkresearch.com/wp-content/uploads/2026/01/MERC-Permits-C-I-Consumers-to-Avail-Both-Net-Metering-and-Open-Access-Benefits-Simultaneously.pdf

7. MSEDCL Tariff Details page (MYT Tariff Orders) - URL: https://www.mahadiscom.in/en/consumer/tariff-details/

8. MERC Order, Case No. 75 of 2025 (Review of MYT Order) - dated June 25, 2025. URL: https://www.mahadiscom.in/en/consumer/tariff-details/

9. Mercom India report on MERC net metering with open access ruling - URL: https://www.mercomindia.com/merc-allows-net-metering-with-open-access-for-rooftop-solar-project

10. CareEdge Ratings report on MERC ToD changes - URL: https://www.careratings.com/uploads/newsfiles/1779945292_Peak%20Power%20Costlier%20Solar%20Cheaper.pdf

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Regulatory status last checked: August 2, 2026. All tariff rates, capacity limits, and regulatory citations are based on MERC and MSEDCL orders and regulations available as of this date. Tariff rates are subject to revision by MERC. Always verify current rates with your local MSEDCL office or the MERC website before making investment decisions.