Skip to main content
Sr. Solar Design Engineer: Er. Dhramveer JoshiM.Tech (Power Systems)|Engineering Profile

National Rooftop Solar Advisory & PM Surya Ghar Subsidy Audit

Eliminate contractor markups, avoid non-DCR subsidy cancellations, and verify DISCOM transformer capacity. 100% unbiased electrical engineering calculations for Indian homeowners, RWAs, and MSMEs.

Solar Adviser Rooftop Solar Advisory & PM Surya Ghar Subsidy Guide
Sr. Solar Design Engineer & Founder

Engineered by Er. Dhramveer Joshi, M.Tech (Electrical Power Systems)

Rooftop solar is an active electrical generation plant connected to your home's distribution bus. With hands-on experience in designing MW-scale Solar PV plants (3 MW – 8.48 MW), SLDs, cable sizing, earthing/LPS systems, and DBR reports, Er. Dhramveer Joshi scrutinizes inverter harmonic distortion (THD < 3%), chemical earthing resistance (< 5Ω), and DCR cell pedigree so your investment lasts 25 years without catastrophic failures or subsidy forfeiture.

Key Engineering Standards
  • IEEE 1547 / 519 Anti-Islanding & THD
  • MNRE ALMM List-I DCR Cell Mandate
  • IS 3043 Grounding & Earthing Protocol
  • CEA Distributed Generation Regulations
Precision Sizing Engine

PM Surya Ghar Sizing & Subsidy Calculator

Adjust your monthly bill and sanctioned load to simulate 25-year financial returns and government subsidy.

Configure Your Property

Live MNRE PM Surya Ghar calculations

2026 Rules
Premises Category

Avg Tariff: ₹7.5/unit•Sun Hours: 4.8 hrs/day

Electricity Consumption
₹1,000₹15,000₹30,000₹50,000+
4 kW

Mentioned on your DISCOM electric bill

400 sq ft

~85 sq ft needed per kW capacity

Unbiased Sizing

4.7 kWp Rooftop Solar Plant

Generates ~582 units/month • Requires 408 sq ft terrace

Capex Payback

2.9 Years

Free power thereafter
Benchmark Cost

₹2,53,800

Tier-1 DCR
Central CFA

-₹78,000

Direct DBT
State Top-Up

-₹21,615

State Nodal
Net Investment

₹1,54,185

After all subsidies
Annual Savings

₹52,380 / yr

25-Yr Cumulative

₹20,35,060

Lifetime CO2 Offset

135 Tonnes

Net Capex Breakeven at Year 2.9Total Profit: ₹18,80,875
Electrical Architecture

Grid-Connected Solar Power System Single Line Diagram

Inspect the exact protection sequence and components required for safe, CEA-compliant DISCOM net-metering.

Electrical Schematic (SLD)

Grid-Connected Solar Rooftop Single Line Diagram

Curated by Er. Dhramveer Joshi, M.Tech
Click any electrical component below to inspect engineering ratings and safety standards:
DC Generation Subsystem

Solar Photovoltaic Array (DCR TOPCon / Mono PERC)

Cell TechnologyN-Type TOPCon / Bifacial Half-Cut
Nominal Module Voc49.8 V
Short Circuit Current (Isc)13.9 A
Temperature Coeff. (Pmax)-0.30 %/°C
Degradation Rate≤ 0.4% / year (30 yr warranty)
Chief Engineer's Technical Assessment

Mandatory ALMM List-I Indian DCR compliance. Modules wired in series strings to achieve optimal MPPT voltage window at peak summer operating temperatures (65°C).

Mandatory Technical Standards
IEC 61215 / IEC 61730 / MNRE DCR Mandate
National Coverage

Rooftop Solar Guides across India

DISCOM net-metering regulations, solar yields, and state subsidies across capital cities and tier-2/3 industrial centers.

View All Regional Guides
The Transparency Gap

Why Choose an Independent Advisor vs Direct Vendor

Never sign a solar contract without having your bill of materials (BoM) and DCR compliance verified by an independent engineer.

Evaluation Parameter
Solar Adviser (Independent)
Typical Direct Vendor
Primary Business Objective
Maximize consumer's 25-year financial savings & engineering reliability
Liquidate existing warehouse inventory at the highest possible sales margin
PM Surya Ghar DCR Verification
Mandatory barcode scan check before panels are mounted to guarantee ₹78k subsidy
Often installs non-DCR or imported cells secretly to cut costs; risking subsidy rejection
Pricing Transparency & Markups
100% itemized BoS pricing (Panels, Inverter, Structure, Cabling) vs MNRE benchmark
Lump-sum opaque quote with hidden charges for meter testing, earthing, and liaison
Mounting Structure Standards
Mandatory 80-micron Hot-Dip Galvanized Iron (HDGI) tested for 150 km/h wind speeds
Often uses cheap 30-micron Pre-Galvanized steel that rusts within 3 monsoons
DISCOM Net-Meter Liaison
Full engineering documentation support, load enhancement advice, & grievance escalation
Leaves the homeowner alone to negotiate with local line staff and junior engineers
Consumer Privacy & Spam
100% Spam-Free. You speak strictly with 1 dedicated certified solar engineer
Your phone number is sold/shared across 15+ sub-dealers who hound you with calls
Verified Results

Proven Savings Across Indian Cities

Homeowners and housing societies who leveraged our advisory calculations to eliminate electric bills.

Gurugram (DLF Phase 4)

Sanjiv Mehta (Independent Villa)

6 kWp Bifacial TOPCon

Bill Before₹16,500 / month
Bill After₹650 (Fixed Charges)

“SolarAdviser caught that our local installer was supplying non-DCR panels which would have cost us ₹78k in lost subsidy. Their quotation audit saved us ₹45,000 on the spot.”

Subsidy Claimed:₹78,000 (Central CFA)
South Delhi (Greater Kailash II)

Dr. Ananya Roy

4 kWp N-Type Mono

Bill Before₹11,200 / month
Bill AfterZero Electricity Bill + GBI Credit

“The SolarAdviser team guided us through BSES Rajdhani net-metering without any corruption or delay. Seamless 22-day turnaround from application to commissioning.”

Subsidy Claimed:₹78,000 CFA + Delhi GBI ₹3/u
Pune (Baner)

Emerald Heights Housing Society (RWA)

42 kWp Common Meter Plant

Bill Before₹94,000 / month (Lifts & Pumps)
Bill After₹8,200 / month

“We presented SolarAdviser's technical feasibility report to our RWA General Body Meeting. The transparent 25-year financial model won 100% committee approval.”

Subsidy Claimed:₹7,56,000 (RWA Subsidy)
Got Questions?

Frequently Asked Questions

Everything you need to know about PM Surya Ghar subsidies, net metering, and quotation audits.

Solar Adviser was founded and engineered by Er. Dhramveer Joshi, M.Tech in Electrical Power Systems. A practicing Sr. Solar Design Engineer with hands-on expertise in MW-scale Solar PV plants (3 MW – 8.48 MW), SLD preparation, cable sizing, and earthing/LPS systems, Er. Joshi curates all technical feasibility models to ensure 100% CEA and MNRE compliance.

Ready to Eliminate Your Electricity Bill?

Get an engineer-certified rooftop feasibility report and quote audit curated by Er. Dhramveer Joshi (M.Tech). 100% free, independent, and spam-free.

Calculate Subsidy (₹78k)Audit Quote