Solar installation cost in Mumbai in 2026 ranges from ₹60,000–₹75,000 per kW for a complete on-grid rooftop system. But before you look at costs, you need to answer a more fundamental question: can you actually install solar at your Mumbai property? Mumbai’s unique structure — three different electricity DISCOMs, dense high-rise housing, and mostly shared rooftops — means most Mumbai flat owners cannot install rooftop solar individually. This guide tells you exactly who can, what it costs, and how to claim the PM Suryaghar subsidy.
Direct answer. Most Mumbai apartment residents cannot install individual rooftop solar because they don’t have individual rooftop access — the roof is shared common property. Bungalow, villa, row house, and independent house owners can install 3–10 kW systems costing ₹1,02,000–₹6,72,000 after PM Suryaghar subsidy. Housing societies can install group solar under PM Suryaghar’s group net metering provision. Mumbai has three DISCOMs: MSEDCL (suburbs), Adani Electricity (western suburbs), and Tata Power (select areas).
This guide covers who can install solar in Mumbai, what it costs across all three DISCOMs, and the Mumbai Solar Feasibility Test you should run before calling any installer.
Mumbai’s Three DISCOMs: Understanding Your Electricity Supplier
Mumbai is unusual in India for having three competing electricity DISCOMs serving different parts of the city. Your DISCOM determines which PM Suryaghar portal you apply through, which net metering rules apply, and which tariff rate your solar savings are calculated against.
MSEDCL (Maharashtra State Electricity Distribution Company Limited): Serves Mumbai suburbs, Navi Mumbai, Thane, and extended Mumbai Metropolitan Region. If your electric bill says “MSEDCL” at the top, this is your DISCOM. MSEDCL’s residential tariff is slab-based at ₹3.06–₹10.50/kWh (MSEDCL 2026 tariff schedule). Consumers using above 500 units/month hit the upper slab of ₹10.50/kWh — making solar economics very strong for high-consumption households.
Adani Electricity Mumbai Limited (AEML): Serves central Mumbai, parts of western suburbs including Andheri, Bandra, Juhu, Vile Parle, and surrounding areas. AEML has its own tariff structure, with rates broadly similar to MSEDCL across slabs. PM Suryaghar for Adani Electricity consumers runs through the national portal selecting AEML as the DISCOM.
Tata Power Mumbai: Serves select areas including parts of Colaba, CST Road, and some western suburbs. Tata Power Mumbai has the smallest residential footprint of the three. PM Suryaghar applies similarly — consumers must use Tata Power-empanelled installers.
The PM Suryaghar guide for MSEDCL consumers and the Adani Electricity solar guide cover the application processes for each DISCOM. The state-level overview is at our Maharashtra PM Suryaghar guide.
Who Can Install Solar in Mumbai? The Honest Answer
This is where Mumbai’s solar market is fundamentally different from Gujarat cities. The answer is not straightforward.
Who CAN install individual rooftop solar in Mumbai:
- Independent bungalows and villas: If you own a standalone house with your own rooftop, you can install solar directly under your DISCOM’s net metering rules. This includes bungalows in areas like Bandra, Juhu, Andheri West, Powai, Goregaon, Borivali, and suburban Mumbai.
- Row houses and townhouses: If your unit has an exclusive rooftop terrace (not shared), you can install solar as an individual consumer.
- Ground-floor tenement with exclusive terrace: Some older Mumbai buildings have ground-floor units with exclusive terrace rights. These can install solar if they hold the electricity account.
- Commercial shopfronts with own roof: Shop and warehouse owners with their own metered connection and exclusive rooftop access.
Who CANNOT install individual rooftop solar in Mumbai:
- High-rise apartment residents: If you live on the 5th floor of a 14-storey building in Andheri, your building’s rooftop is common property. You individually cannot install panels there, even if you’re willing to pay. The rooftop belongs to the housing society, not to your flat.
- Flat owners in shared buildings without society consent: Even if you have roof access, you need a valid legal basis (society resolution, registered agreement) to install panels on common property.
What apartment residents CAN do:
Housing societies can install group solar under PM Suryaghar’s group net metering provision. The society installs a solar array on the shared rooftop, connected to a common meter, and the electricity credits are shared among flat owners (either proportionally or as a reduction in society electricity charges for common areas like pumps, lifts, and lighting).
📘 Regulation note
MSEDCL's net metering regulation (MERC Order 2019 and updates) allows group net metering for housing societies and cooperative housing societies under the PM Suryaghar framework. The society applies as a single consumer entity. See our solar for housing societies guide for the full process.
The Mumbai Solar Feasibility Test: 4 Questions
This is the proprietary framework we call The Mumbai Solar Feasibility Test. Answer these four questions before evaluating any installer or cost table.
Question 1: Do you have individual, exclusive access to a rooftop?
If you live in a flat (any floor) in a multi-unit building: the answer is almost certainly no. If you live in a ground-floor unit with an exclusive terrace: possibly yes. If you own a bungalow or independent house: yes. If you’re not sure, check your property documents — look for whether the terrace/roof is listed as exclusive or common.
Question 2: Is the electricity account in your name?
The PM Suryaghar application requires the electricity consumer number to match the applicant’s name. If your electricity account is in the society’s name (common for housing societies and some older buildings), individual installation is not straightforward. The society needs to apply as the consumer.
Question 3: Is your roof structurally capable of carrying solar panels?
A 5 kW system of 10–12 panels weighs approximately 150–180 kg (panels + mounting structure). For most Mumbai buildings with RCC construction, this is not a concern. For older buildings (pre-1985), water tanks on roofs, and buildings with any structural issues flagged in recent surveys, a structural engineer’s assessment is advisable before installation.
Question 4: Which DISCOM serves your address?
Check your electricity bill. The header will show MSEDCL, Adani Electricity Mumbai, or Tata Power. This determines your net metering application route, empanelment requirements, and subsidy processing timeline. Different DISCOMs have different processing speeds for net meter installation.
If you answered YES to all four questions, you’re a strong candidate for individual rooftop solar. If Question 1 is no, explore the housing society group solar route.
Mumbai Solar Cost Table: 3 kW to 10 kW (2026)
These prices apply to individual rooftop installations from an MSEDCL/AEML-empanelled installer, using ALMM panels and BIS-certified inverters. PM Suryaghar subsidy applies for residential consumers as per MNRE 2026 guidelines.
| System Size | Gross Price | PM Suryaghar Subsidy | Net Price After Subsidy | Monthly Generation (est.) | Annual Saving (₹7.00 avg MSEDCL upper slab) |
|---|---|---|---|---|---|
| 3 kW | ₹1,80,000–₹2,25,000 | ₹78,000 | ₹1,02,000–₹1,47,000 | 390–450 kWh | ₹32,760–₹37,800 |
| 4 kW | ₹2,40,000–₹3,00,000 | ₹78,000 | ₹1,62,000–₹2,22,000 | 520–600 kWh | ₹43,680–₹50,400 |
| 5 kW | ₹3,00,000–₹3,75,000 | ₹78,000 | ₹2,22,000–₹2,97,000 | 650–750 kWh | ₹54,600–₹63,000 |
| 6 kW | ₹3,60,000–₹4,50,000 | ₹78,000 | ₹2,82,000–₹3,72,000 | 780–900 kWh | ₹65,520–₹75,600 |
| 8 kW | ₹4,80,000–₹6,00,000 | ₹78,000 | ₹4,02,000–₹5,22,000 | 1,040–1,200 kWh | ₹87,360–₹1,00,800 |
| 10 kW | ₹6,00,000–₹7,50,000 | ₹78,000 | ₹5,22,000–₹6,72,000 | 1,300–1,500 kWh | ₹1,09,200–₹1,26,000 |
Source: Heaven Green Energy benchmark pricing, 2026; PM Suryaghar MNRE 2026; MSEDCL tariff schedule 2026.
Note: Mumbai’s irradiation of 5.0–5.4 kWh/m²/day is lower than Gujarat (5.5–6.0) — hence the lower monthly generation estimates. Also, Mumbai’s monsoon season (June–September) significantly reduces generation for 4 months. Annual generation averages approximately 20–25% less than Gujarat for the same system size.
The ₹7.00/kWh savings figure used assumes high-consumption consumers in MSEDCL’s upper slab (above 500 units/month pay ₹10.50/kWh but the effective average across the bill is typically ₹6.50–₹8.00). Lower-consumption households will have longer paybacks because they’re in the lower tariff slabs.
MSEDCL Tariff and Solar Payback in Mumbai
MSEDCL’s residential tariff is India’s most complex — it has multiple slabs and a slab-reset mechanism. The key slabs for solar payback calculation (2026):
| Monthly Consumption | MSEDCL Rate |
|---|---|
| 0–100 units | ₹3.06/kWh |
| 101–300 units | ₹5.49/kWh |
| 301–500 units | ₹7.26/kWh |
| 501–1000 units | ₹9.65/kWh |
| Above 1000 units | ₹10.50/kWh |
This slab structure creates a counterintuitive situation: high-consumption households in the 500+ unit bracket save ₹9.65–₹10.50 per unit from solar — the highest residential tariff in India among major DISCOMs. A 5 kW Mumbai bungalow owner paying ₹12,000/month on their MSEDCL bill will achieve payback in under 2.5 years post-subsidy.
Low-consumption households (under 300 units/month, paying ₹3.06–₹5.49/kWh) have much longer paybacks of 6–8 years. Solar may not make financial sense for them unless they plan to add high-consumption appliances (EV charger, second AC) soon.
⚠️ Watch out
Mumbai's 4-month monsoon (June–September) reduces solar generation significantly. A 5 kW system generating 650 kWh/month in December–May may generate only 350–450 kWh during July–August. Your annual payback calculation must account for this seasonal variation — don't use peak-month generation for 12-month projections.
Housing Society Solar in Mumbai: The Better Option for Most Residents
For the majority of Mumbai residents who live in apartments, housing society group solar is the practical path. Under PM Suryaghar’s group net metering provision and MSEDCL’s group housing consumer scheme, the society installs a solar array on the shared roof and the savings appear as reduced society maintenance charges.
How it works:
- Society resolution: A general body resolution passes approving the solar installation. This requires a majority vote (check your society bylaws for the exact threshold).
- Society applies as consumer: The housing society’s electricity connection (the one used for pumps, lifts, and common area lighting) is used as the primary consumer account.
- Solar installed on shared roof: System size is based on the society’s common area load — typically 10–100 kW for a mid-sized Mumbai housing society.
- Net metering credits offset society electricity bill: Solar generation offsets the society’s common area consumption, reducing the maintenance charge component that covers electricity.
- Individual flat owners benefit indirectly: Reduced society maintenance charges are the financial benefit for individual residents.
A 500-unit housing society in Powai with a 50 kW system generates approximately 6,000 kWh/month. At MSEDCL’s LT commercial rate for societies (approximately ₹7/kWh), that’s ₹42,000/month in savings — translating to approximately ₹84/month reduction in maintenance for each of 500 flats.
Read the solar for housing societies guide for the complete process and legal requirements. You can also check MSEDCL’s official website for their group net metering application procedure.
Get a free site assessment. Our engineers visit within 24 hours and send a custom savings proposal in 48 hours — no cost, no obligation. Get your free quote →
How to Apply for PM Suryaghar in Mumbai
The Mumbai PM Suryaghar guide covers the application process step by step. The key steps:
- Register at pmsuryaghar.gov.in — use your DISCOM consumer number (MSEDCL, AEML, or Tata Power), registered mobile, and Aadhaar.
- Select your DISCOM — this is critical. An application filed under the wrong DISCOM will be rejected. Your bill header shows which company supplies your electricity.
- Submit application — upload last 3 electricity bills, Aadhaar, bank passbook, and roof/property documents.
- Feasibility approval — your DISCOM reviews and approves within 7–15 working days.
- Select an empanelled installer — verify on the PM Suryaghar portal that your installer is empanelled under your specific DISCOM (MSEDCL vs. AEML vs. Tata Power empanelments are separate).
- Installation — 3–7 days for residential systems.
- Net meter installation — DISCOM installs within 15–45 days (Mumbai DISCOMs are slower than Gujarat on this step).
- Subsidy DBT — ₹78,000 within 30 days of net meter commissioning.
The Maharashtra state framework is administered by MAHAURJA (Maharashtra Energy Development Agency), which supplements the national PM Suryaghar with state-specific guidance.
Comparing Mumbai DISCOMs for Solar Feasibility
| Dimension | MSEDCL | Adani Electricity | Tata Power |
|---|---|---|---|
| Coverage area | Suburbs, Navi Mumbai, Thane | Central Mumbai, Bandra, Andheri, Juhu | Select areas — Colaba, CST |
| Residential tariff (upper slab) | ₹10.50/kWh | Approx ₹9–₹10/kWh | Approx ₹8–₹9/kWh |
| PM Suryaghar eligibility | ✓ Full eligibility | ✓ Full eligibility | ✓ Full eligibility |
| Net metering processing time | 30–45 days typically | 20–35 days typically | 20–35 days typically |
| Group housing provision | ✓ Available | ✓ Available | ✓ Available |
| Subsidy DBT via | Direct to consumer bank | Direct to consumer bank | Direct to consumer bank |
All three Mumbai DISCOMs participate in PM Suryaghar. The key difference is coverage area — you cannot choose your DISCOM based on preference; it’s determined by your address.
💡 Fast tip
If you're unsure which DISCOM serves your Mumbai address, look at your electricity bill header. The company name appears prominently at the top. Do not assume based on neighbourhood — AEML and MSEDCL serve overlapping areas in some western suburbs, and Tata Power's network doesn't always follow obvious geographic boundaries.
Pros and Cons: Solar in Mumbai vs. Gujarat Cities
- MSEDCL upper-slab tariff of ₹10.50/kWh — highest savings per unit
- ₹78,000 PM Suryaghar subsidy fully available
- High property values — solar adds tangible resale value
- 3 competing DISCOMs — all with net metering frameworks
- Most flat owners lack individual rooftop access
- 5.0–5.4 kWh/m²/day — lower than Gujarat by 10–15%
- 4-month heavy monsoon reduces annual generation 20–25%
- Dense urban shading from adjacent high-rises
- Net meter installation slower than Gujarat DISCOMs
How Heaven Green Energy Helps Mumbai Solar Customers
Heaven Green Energy operates in Mumbai for qualifying rooftop installations — primarily bungalow and independent house owners, and housing societies seeking group solar. We are empanelled under the PM Suryaghar scheme and handle MSEDCL, Adani Electricity, and Tata Power net metering applications.
For housing societies, our team assesses the common area load, designs the optimal system size, handles the society general body resolution documentation, and manages the entire MSEDCL/AEML application and commissioning process.
The CEEW India Solar Potential report (2024) estimates Mumbai has 2.3 GW of technically feasible rooftop solar potential — most of it on housing society rooftops and commercial buildings, not individual residences.
- Residential Solar — for Mumbai bungalows and independent houses with own rooftop access.
- Solar for Housing Societies — complete guide to group net metering for Mumbai apartment buildings.
- PM Suryaghar Mumbai guide — step-by-step application for all three Mumbai DISCOMs.
- Solar Calculator — enter your MSEDCL bill and get Mumbai-specific savings in 60 seconds.
Ready to check if your Mumbai property qualifies? Our engineer visits in 24 hours, applies the 4-question Feasibility Test, and sends a detailed proposal. Get your free quote →
Frequently Asked Questions
Can I install solar panels on my Mumbai apartment flat?
Almost certainly not on an individual basis. Apartment buildings have shared rooftops that are common property — individual flat owners don’t have the legal right to install panels there, even if physically possible. However, your housing society can install group solar on the shared roof under MSEDCL’s group net metering scheme. The savings reduce society maintenance charges for all flat owners. Read the solar for housing societies guide for the full process.
What is the PM Suryaghar subsidy amount for Mumbai residents?
PM Suryaghar subsidizes residential rooftop solar at ₹30,000 for 1 kW, ₹48,000 for 2 kW, and ₹78,000 maximum for 3 kW and above. This applies to MSEDCL, Adani Electricity, and Tata Power consumers in Mumbai equally. The subsidy is disbursed via DBT (Direct Benefit Transfer) to the consumer’s bank account within 30 days of net meter commissioning, per MNRE guidelines 2026.
Which DISCOM covers my Mumbai address — MSEDCL, Adani, or Tata?
Check your electricity bill header — the company name appears prominently at the top. MSEDCL serves most Mumbai suburbs and the extended MMR (Navi Mumbai, Thane). Adani Electricity Mumbai serves central Mumbai and parts of the western suburbs including Andheri, Bandra, and Juhu. Tata Power serves select pockets including parts of Colaba. You cannot choose your DISCOM; it’s determined by your address.
How does Mumbai solar compare to Gujarat — is the payback worse?
Yes, somewhat. Mumbai’s 5.0–5.4 kWh/m²/day irradiation is 10–15% lower than Gujarat’s 5.5–6.0. Mumbai’s monsoon reduces generation for 4 months. A 5 kW Mumbai system generates approximately 7,800–9,000 kWh/year vs. 9,000–10,000 kWh in Ahmedabad. But Mumbai’s MSEDCL upper-slab tariff of ₹10.50/kWh is much higher than UGVCL’s ₹6.55/kWh — for high-consumption Mumbai households, the higher savings per unit can actually produce faster payback than Gujarat despite lower generation.
What is the payback period for solar in Mumbai for a bungalow owner?
For an MSEDCL bungalow owner with a ₹12,000/month electricity bill (roughly 800+ units, upper slab), a 5 kW system costs ₹2,22,000–₹2,97,000 after subsidy. Monthly savings: approximately 700 kWh × ₹9.00 effective tariff = ₹6,300/month. Payback: 35–47 months (3–4 years). For lower-consumption bungalow owners with ₹3,000–₹5,000 monthly bills, payback extends to 5–7 years.
Does Mumbai get enough sun for solar to make sense?
Yes, for high-consumption households. Mumbai’s 5.0–5.4 kWh/m²/day is still well above the global average for solar installations. Germany installs solar at 3.0–3.5 kWh/m²/day and it makes economic sense there. Mumbai’s solar resource, combined with MSEDCL’s upper-slab tariffs reaching ₹10.50/kWh, makes solar economically viable for households paying above ₹5,000/month on electricity. Research from CEEW (2024) confirms Mumbai’s rooftop solar potential remains substantially untapped.
Can a Mumbai housing society install solar for the whole building?
Yes. Under PM Suryaghar’s group net metering provision and MSEDCL’s housing society scheme, a co-operative housing society can install solar on the shared rooftop. The system is connected to the society’s common area electricity meter. Credits offset the society’s common area electricity consumption (pumps, lifts, corridor lighting), which reduces the society’s electricity bill and allows for lower maintenance charges for flat owners. Heaven Green Energy handles society installations and all MSEDCL application documentation.
How long does solar installation and net metering take in Mumbai?
Physical installation for a residential system takes 2–5 days. DISCOM feasibility approval: 7–20 working days (Mumbai DISCOMs are slightly slower than Gujarat). Net meter installation: 25–45 days after commissioning (longer than Gujarat’s 15–30 days). Subsidy DBT: 30 days after net meter commissioning. Total from PM Suryaghar application to subsidy receipt: 80–120 days in Mumbai vs. 60–90 days in Ahmedabad or Surat.
