1. Client Profile & Pre-Solar Electricity Bill Audit
Konark A Plus Co-operative Housing Society (Konark A Plus Saha Gruh Rachana Sanstha) is a prestigious residential community situated in Sopan Baug, Ghorpadi, Pune (Pin Code: 411001). Like most premium high-rise residential complexes in Pune, the society operates heavy common infrastructure round-the-clock:
- Multiple high-speed residential passenger lifts operating 24x7 across all towers.
- High-capacity underground sump to overhead tank water pumping systems and pressure booster pumps.
- Sewage treatment plants (STP), swimming pool filtration plants, and rainwater harvesting pumps.
- Extensive perimeter campus security, landscape illumination, and podium lighting.
The Bill Audit: Average 12,000 to 14,000 Units/Month
An exhaustive audit of the society’s official MSEDCL electricity bill (Consumer No: 160250379894, Rasta Peth Division, St. Mary Sub-Division) revealed massive recurring expenditure. Over a 13-month cycle, the society’s average monthly consumption hovered between 12,000 and 14,200 units, with peak bills exceeding ₹3,24,000 per month (and peaking up to ₹4,77,000 in heavy seasons).
Verified 13-Month MSEDCL Billing History (Common Services Meter):
| Billing Month | Units Billed (kWh) | Monthly Bill Amount (₹) | Effective Unit Rate (₹/kWh) |
|---|---|---|---|
| Aug 2026 | 14,291 units | ₹3,24,769.18 | ₹22.72 / unit |
| Jul 2026 | 14,091 units | ₹3,19,380.34 | ₹22.66 / unit |
| Jun 2026 | 12,937 units | ₹2,90,694.34 | ₹22.47 / unit |
| May 2026 | 11,838 units | ₹2,73,376.09 | ₹23.09 / unit |
| Apr 2026 | 12,336 units | ₹2,79,562.52 | ₹22.66 / unit |
| Jan 2026 | 13,040 units | ₹2,90,433.75 | ₹22.27 / unit |
| Nov 2025 | 21,576 units | ₹4,77,051.07 | ₹22.11 / unit |
Why is the MSEDCL Unit Rate Over ₹20 for Residential Societies?
Under Maharashtra Electricity Regulatory Commission (MERC) LT-I A Residential tariffs, when high-rise societies consume in excess of 500 units on a common meter, energy charges fall into the highest slab. When combined with fixed demand charges (45 kW sanction), Time-of-Day (TOD) peak surcharges, Wheeling Charges (@ ₹1.60/unit), Fuel Adjustment Charges (FAC), and 16% Maharashtra Electricity Duty, the net landed cost consistently exceeds ₹20 to ₹22.70 per unit. This massive rate makes solar adoption extraordinarily profitable!
2. Engineering Sizing & Terrace Layout Criteria
Designing a solar plant for a housing society requires precise engineering to balance available terrace space against monthly utility targets.
The 100kW Sizing Formula:
In Pune's climate conditions, a well-engineered solar PV system reliably delivers 120 kWh (units) per kilowatt per month (approx. 4 units/kW/day).
Specific Solar Yield in Pune = 120 Units / kW / Month
Required Solar Capacity = 12,000 ÷ 120 = 100 kWp
Shadow-Free Rooftop Area Requirement:
As specified in our engineering standards, 60 sq. ft. of shadow-free terrace area is required per 1 kW of solar installation.
- Terrace Area for 100 kW: $100\text{ kW} \times 60\text{ sq. ft.} = \mathbf{6,000\text{ sq. ft.}}$ of shadow-free terrace space.
- Elevated Structure Engineering: To ensure residents can continue using the rooftop for recreational walking and clothes drying, and to allow easy waterproofing maintenance, E Green Solution fabricated customized hot-dip galvanized elevated superstructures with 8 to 10 feet clearance above the roof slab.
3. Project Walkthrough Videos & On-Site Photos
Explore our verified on-site video documentation and high-resolution photography captured at Konark A Plus Society in Sopan Baug, Pune. We have categorized the media into the Rooftop PV Array Layout (widescreen) and the Elevated Superstructure Clearance (vertical walkthrough):
100kW Rooftop PV Array & Panel Layout
Widescreen ArrayOn-Site Array Walkthrough
Sweep across the high-yield Vikram Solar Mono PERC panels installed across the society building roof wings.
Panoramic Module Installation
Precision south-facing tilt orientation engineered for peak annual kilowatt-hour (kWh) solar yield in Pune.
Elevated Structure & Full Terrace Clearance
8-10 Ft HeadroomHigh-clearance hot-dip galvanized steel columns allow residents to walk freely, dry clothes, and carry out routine roof maintenance underneath the array:
Walking Under The Panels
Live on-site video showing comfortable 8-10 ft headroom clearance under the galvanized structural columns.
Structural Pedestal Engineering
Heavy-duty column base pedestals engineered with waterproof chemical anchoring—preserving 100% roof slab integrity.
4. Technical System Specifications
| Project Name | Konark A Plus 100kW Rooftop Solar EPC |
|---|---|
| Client / Society | Konark A Plus Co-operative Housing Society |
| Location | Sopan Baug, Ghorpadi, Pune – 411001 |
| Consumer Number | MSEDCL Consumer No: 160250379894 |
| System Capacity | 100 kWp DC Grid-Tied Solar Plant |
| Average Monthly Yield | ~12,000 kWh (Units) / Month |
| Annual Generation | ~1,44,000 kWh (Units) / Year |
| PV Module Type | Tier-1 High-Efficiency Vikram Solar Mono PERC Half-Cut / TOPCon |
| Mounting Structure | Custom High-Elevation Hot-Dip Galvanized (HDG) Steel Structure |
| Terrace Space Utilized | ~6,000 Sq. Ft. Shadow-Free Roof |
| Net Metering Approval | MSEDCL LT-I A Residential TOD Net Meter with Bi-directional Sync |
| Government Subsidy | PM Surya Ghar: Muft Bijli Yojana (GHS Common Facility Scheme) |
5. Financial Analysis, Pricing & Payback Period
Housing society solar installations represent one of the highest-yielding capital investments available today, backed by central government subsidies under the PM Surya Ghar: Muft Bijli Yojana for Group Housing Societies (GHS).
Investment & Central Subsidy Breakdown:
| Financial Metric | Calculation / Rate | Amount (INR) |
|---|---|---|
| Gross EPC Project Cost | 100 kW @ ₹45,000 - ₹48,000 / kW | ₹45,00,000 – ₹48,00,000 |
| PM Surya Ghar Society Subsidy | ₹18,000 per kW (Central Financial Assistance) | - ₹18,00,000 (₹18 Lakhs) |
| Net Capital Outlay for Society | Gross Cost minus Direct Subsidy Credit | ₹27,00,000 – ₹30,00,000 |
| Monthly Electricity Cost Savings | 12,000 units offset @ ₹20 to ₹22.70/unit | ₹2,40,000 – ₹2,72,000 / month |
| Annual Power Bill Savings | Monthly savings × 12 months | ₹28,80,000 – ₹32,64,000 / year |
| Estimated Payback Period | Net Outlay ÷ Annual Savings | Under 1.0 Year (Net) / < 2.8 Years with Interest |
90% Bill Reduction Guarantee
With 12,000 solar units fed into the MSEDCL grid every month, the society’s net payable energy bill drops from over ₹3,20,000 per month down to just ₹25,000 - ₹32,000 (consisting purely of fixed meter rents and residual demand charges). The society saves over ₹30 Lakhs every single year, allowing managing committees to reduce member maintenance charges or allocate funds toward elevators, clubhouse upgrades, and building painting!
6. Crucial Comparison: Residential Society vs Commercial Solar Net Metering
One of the most frequent questions we receive from society managing committee members and commercial property owners is how MSEDCL solar net metering regulations differ between residential and commercial connections:
| Parameter | Residential & Housing Societies | Commercial & Office Buildings |
|---|---|---|
| Net Metering Banking | 100% 24x7 Banking: Units generated at noon offset units consumed at night (lifts, pumps, streetlights). | Daytime Instantaneous Offset: Solar offset is credited primarily against active daytime hours. |
| Expected Bill Reduction | Up to 90% reduction on total monthly bill. | ~50% reduction on daytime consumption without storage. |
| Central Government Subsidy | ₹18,000/kW for societies; up to ₹78,000 for individual homes. | No direct subsidy, but eligible for 40% accelerated tax depreciation. |
| Night Load Optimization | Surplus banked daytime units cover all night lighting and pumping automatically. | Requires Battery Energy Storage Systems (BESS) for night offset (higher capex, but strong long-term ROI). |
| Return on Investment (ROI) | 2.5 to 3 years (due to high ₹20+/unit residential tariff). | 3.5 to 4 years based on commercial tariff structure. |
7. Step-by-Step Roadmap: How Pune Housing Societies Can Go Solar
Implementing rooftop solar across a large residential complex involves committee coordination and statutory approvals. E Green Solution provides complete turnkey execution:
- Free Rooftop Feasibility Audit: Our engineers visit your society, inspect terrace shadow patterns, measure square footage (60 sq. ft./kW), and review the last 12 months of MSEDCL light bills.
- AGM / SGM Proposal & Presentation: We prepare a customized technical and financial dossier and present it directly to your society’s Managing Committee or General Body to address questions on terrace access, waterproofing, and ROI.
- MSEDCL Net Meter Sanctioning: We handle complete online MSEDCL documentation, transformer load verification, and grid interconnection feasibility approvals.
- Fabrication & Module Installation: Rapid erection of hot-dip galvanized elevated structures and Tier-1 Vikram Solar modules within 20 to 30 working days.
- Net Meter Testing & Commissioning: MSEDCL inspection, installation of the bi-directional net meter, and grid synchronization.
- PM Surya Ghar Subsidy Disbursal: Complete documentation assistance to ensure the society receives the ₹18,000/kW central subsidy credited directly into the society bank account.