Picture this: a factory in Thane that installed rooftop solar two years ago. The system was performing well, generating cleanly through the day, banking credits, and using them after sunset when the second shift kicks in. The electricity bills were down. Everyone was happy.

Then the rules changed.

MERC’s Modified Multi-Year Tariff (MYT) Order introduced something that quietly reshaped the entire solar savings equation across Maharashtra: same-slot banking, Time-of-Day (ToD) tariffs, and a daytime rebate that rewards those who consume solar power when it’s generated, not hours later. For some businesses, nothing changed. For others, a savings model they had carefully built began to erode.

Understanding what changed, why it changed, and how to position your solar investment on the right side of these rules is no longer optional; it’s the difference between a solar plant that pays for itself efficiently and one that underperforms on paper.

What Maharashtra’s New Solar Rules Actually Say

Let’s cut through the regulatory language and lay this out plainly.

Maharashtra’s electricity regulator, MERC, defines solar hours as 9:00 AM to 5:00 PM. Under the new framework, this window is officially the cheapest time to draw power from the grid, and the most rewarding time to consume solar energy you’ve generated.

During solar hours, consumers receive a rebate on grid electricity:

• 15% off from April to September (summer months)
  
  
• 25% off from October to March (winter months)
  
  
• Growing progressively toward 30% by FY 2029–30
  
  

During peak hours (5:00 PM to midnight), consumers pay a ~20% premium on top of base tariffs.

Here’s where it gets important for solar users. Under the revised framework, solar banking credits, the units your rooftop system exports to the grid, are now being settled on a same-slot basis for commercial and industrial consumers. In simple terms: your daytime solar generation is most valuable when consumed or credited during the day. It can no longer be freely used to wipe out your evening and night-time peak-hour bills the way it once could.

Simultaneously, MERC has approved a solar-hour rebate for low-tension residential consumers, ₹0.80/kWh in FY 2025–26, rising each year to ₹1.00/kWh by FY 2029–30, encouraging daytime self-consumption rather than grid export.

The message from the regulator is consistent: consume during the day, save more. Lean on the grid at night, pay more.

Why This Is a Structural Shift, Not a Minor Tweak

What most people don’t realise is that the old model of solar banking worked almost like an energy savings account, you deposited during the day and withdrew whenever it suited you. For industries running night shifts, that meant daytime generation quietly offset expensive evening grid draw. It was an elegant workaround.

That workaround is now significantly restricted.

Industry experts have estimated that C&I consumers who don’t adapt their solar strategy under the current MERC banking framework could see effective electricity costs rise by 20–30% over time, compared with their original solar proposals. Those proposals were built on assumptions that no longer hold.

This isn’t a condemnation of solar, far from it. It’s a recalibration. MERC’s logic is sound from a grid management perspective: Maharashtra’s rooftop solar capacity has surpassed 5.1 GW, serving nearly 7 lakh consumers. When all of that generation pours into the grid during the day and is drawn back in the evening, it creates a grid imbalance that the infrastructure isn’t built to handle at scale. Encouraging real-time daytime consumption is cleaner, more stable, and more economical for the entire grid.

For consumers, the opportunity is in understanding which side of this rule you’re on.

Who Benefits Most, and Who Needs to Adapt

If your operations run primarily during the day, in offices, schools, hospitals, logistics hubs, and warehouses with day shifts, this framework is an outright gift. Your solar generation and your consumption now align almost perfectly. You self-consume more, export less at low rates (MERC has approved ₹2.82/kWh for surplus in FY 2026–27, far lower than what you’d save by consuming it yourself), and draw from a discounted grid only during the cheapest hours.

For these consumers, a well-sized solar installation by a reliable solar installation company in Mumbai or across Maharashtra is arguably more financially compelling today than ever before.

If your operations are load-heavy after 5:00 PM , manufacturing plants running multiple shifts, data centres, cold storage facilities, large commercial complexes , a standalone solar system under the new rules leaves a significant opportunity gap. Your most expensive grid units (the peak-hour ones at a 20% premium) are now outside the reach of your solar credits.

For these businesses, the answer isn’t to abandon solar. It’s to pair solar with battery energy storage, which allows daytime generation to be stored and strategically dispatched after sunset, effectively putting your solar plant back in the driver’s seat even under the new framework.

The Solar Subsidy Landscape in Maharashtra: What’s Still Available

Despite the regulatory complexity around banking and ToD, the subsidy picture in Maharashtra remains genuinely attractive, and it’s worth understanding what’s on the table before making any investment decision.

PM Surya Ghar Muft Bijli Yojana (Central Scheme) offers residential consumers:

• ₹30,000 subsidy for systems up to 2 kW
  
  
• ₹60,000 for systems between 2–3 kW
  
  
• ₹78,000 for systems of 3 kW and above
  
  

The Maharashtra SMART Solar Scheme (Swayampurna Maharashtra Residential Rooftop Solar Scheme), launched in late 2025, adds an additional state-level subsidy, bringing the consumer’s out-of-pocket cost down to as low as ₹2,500 in certain categories. For eligible households, this makes solar power an almost zero-cost entry with a projected payback of 2–3 years.

The solar subsidy in Maharashtra for commercial and industrial consumers operates differently: through net billing frameworks, electricity duty exemptions for captive green open access projects that include storage integration, and concessional financing options. However, the financial case remains strong when properly structured.

What This Means for Your Solar Decision in 2026

If you’re evaluating solar for a home or business in Maharashtra this year, the single most important thing to do before signing anything is to ensure your installer is working with 2026 numbers, not 2024 assumptions.

A solar proposal that doesn’t account for:

• The ToD tariff premium on evening grid draw
  
  
• Same-slot banking settlement for commercial consumers
  
  
• The ₹2.82/kWh rate for surplus export (and why self-consumption is worth far more)
  
  
• Whether battery storage integration makes financial sense for your load profile
  
  

…is a proposal that will overstate your savings.

Solar power rules in Maharashtra have matured significantly. That’s not bad news, it’s a sign of a market growing up. The policy direction is clear: generate clean, consume smart, and store where necessary.

For businesses in Mumbai and across the state, this creates a real advantage for those who approach solar with engineering rigour rather than just chasing the lowest installation quote. A properly designed system, sized accurately, integrated intelligently, and backed by strong O&M, performs better, saves more, and continues to deliver returns as the tariff landscape evolves.

Getting It Right From the Start

The solar panel companies in Mumbai and across Maharashtra that clients should work with in this environment are those that understand the regulatory framework as deeply as they do the technology itself. The conversation should begin with your load profile, when you consume, how much, and at what grid tariff tier, before a single panel size or battery capacity is discussed.

At Jevanta Renewables, we approach every project this way. With 950+ MW commissioned across residential, commercial, and utility-scale projects, and flexible financing structures, including CAPEX, RESCO, and BOOT models, we design solar and storage solutions built for how Maharashtra’s grid actually works today, not how it worked three years ago.

If you’ve been considering solar in Maharashtra, the regulatory environment has changed enough that even previously shelved decisions deserve a fresh look. The rules may be more complex, but the opportunity, when approached correctly, is larger than ever.