Learn rooftop solar

• Uttar Pradesh Rooftop Solar 2026: Subsidy up to ₹1.08 Lakh

  Rooftop solar in UP in 2026: PM Surya Ghar plus UPNEDA top-up, UPPCL tariff and FPPAS, net metering for homes, generation meter, winter haze and payback.

  20 October 20265 min readState guideUttar PradeshUPPCL

• Telangana and Andhra Rooftop Solar 2026: Subsidy Guide

  Rooftop solar in Telangana and Andhra Pradesh in 2026: PM Surya Ghar and AP top-ups, monthly net metering, TGSPDCL and APSPDCL tariffs, and sizing tips.

  20 October 20265 min readState guideTelanganaAndhra Pradesh

• Tamil Nadu Rooftop Solar 2026: Subsidy and Net Metering

  Rooftop solar in Tamil Nadu in 2026: PM Surya Ghar subsidy, TNPDCL bi-monthly slabs and free units, net metering, the network charge, and sizing tips.

  20 October 20265 min readState guideTamil NaduTnpdcl

• TOPCon vs PERC vs Bifacial Panels for Indian Roofs

  TOPCon, PERC or bifacial solar panels for an Indian rooftop? Compare heat performance, degradation, warranty, price and when bifacial actually helps.

  20 October 20265 min readHomeownerInstallerModules

• String Sizing for Indian Temperatures: Installer Guide

  Size PV strings for Indian conditions: design minimum temperatures by region, Voc and Vmp corrections, MPPT current, fuses, and worked 600 V examples.

  20 October 20265 min readInstallerDesignStrings

• Solar in the Monsoon: How Much Output Do You Lose?

  How much rooftop solar output drops in India's monsoon, city by city, why net metering evens it out, and how to protect your system from rain and storms.

  20 October 20265 min readHomeownerMonsoonGeneration

• Solar for 500 Units a Month: 4 kW or 5 kW?

  500 units a month needs about 4 kW of rooftop solar. Compare 4 kW vs 5 kW, single vs three phase, roof area, 2026 cost, subsidy and payback.

  20 October 20265 min readHomeownerSizingPM Surya Ghar

• Solar Structure Design and Wind Load (IS 875 Part 3)

  Rooftop solar structures and wind in India: IS 875 (Part 3) wind speeds, design pressure, uplift per module, anchors, ballast, tin sheds and coastal sites.

  20 October 20265 min readInstallerStructureWind

• Solar Payback and IRR Explained for Indian Homes

  How to calculate rooftop solar payback and IRR in India, with worked 3 kW and 5 kW examples, the assumptions that matter, and a comparison with an FD.

  20 October 20265 min readHomeownerFinancePayback

• Solar Panel Cleaning and Maintenance in India

  How often to clean solar panels in India, the right way to clean, what to check monthly and yearly, and what maintenance should cost in 2026.

  20 October 20265 min readHomeownerMaintenanceO and m

• Solar Inverter Selection: DC/AC Ratio, MPPT, Phase

  Choose an on-grid or hybrid inverter in India: DC/AC ratio 1.1–1.25, MPPT count and current, voltage window, phase rules, heat, certification, service.

  20 October 20265 min readInstallerInverterDesign

• Solar Cable Sizing and Voltage Drop: DC and AC Guide

  Size DC string and AC cables for rooftop solar in India: ampacity, derating, voltage drop formulas, 1.5% targets, worked 5 kW examples and standards.

  20 October 20265 min readInstallerCablesVoltage drop

• Rooftop Solar for Shops, Clinics and Small Businesses

  Rooftop solar for shops, offices, clinics and small factories in India: size to daytime load, ToD banking, grid support charges, tax and payback.

  20 October 20265 min readBusinessCommercialSizing

• Rooftop Solar for Housing Societies (RWA/GHS) in 2026

  How housing societies and RWAs can install rooftop solar for common areas: ₹18,000/kW subsidy, sizing for lifts and pumps, approvals, and pitfalls.

  20 October 20265 min readHomeownerHousing societyRwa

• Rooftop Solar Earthing and Lightning: Practice vs Standard

  Rooftop solar earthing and lightning protection in India: market practice vs IS 3043 and IS/IEC 62305, why a 16 sq mm Al LA cable falls short, pits, SPDs.

  20 October 20266 min readInstallerEarthingLightning

• Rooftop Solar Cost per kW in India (2026 Guide)

  What rooftop solar costs per kW in India in 2026: price ranges for 1–10 kW, what drives the price, GST at 5%, subsidy, and how to compare quotes fairly.

  20 October 20265 min readHomeownerCostPM Surya Ghar

• Rooftop Solar Commissioning Checklist for Installers

  Rooftop solar commissioning checklist: mechanical checks, DC tests (Voc, Isc, insulation), earthing, AC and inverter settings, inspection and handover.

  20 October 20265 min readInstallerCommissioningTesting

• Rajasthan Rooftop Solar 2026: Subsidy, Net Billing, Tariff

  Rooftop solar in Rajasthan in 2026: PM Surya Ghar plus ₹17,000 state top-up, net metering at ₹3.26 or net billing at ₹3.65, JVVNL tariffs and sizing.

  20 October 20265 min readState guideRajasthanJvvnl

• Pricing a 3, 5 or 10 kW Solar Job: BOM Breakdown

  How to price 3, 5 and 10 kW rooftop solar jobs in India: bill of materials, cost shares, GST at 5%, 18% or 70:30, labour, margin and market check.

  20 October 20265 min readInstallerPricingBom

• PM Surya Ghar Subsidy 2026: How to Apply, Step by Step

  How to apply for the PM Surya Ghar rooftop solar subsidy in 2026: amounts, eligibility, portal steps, documents, loans, timelines and common rejections.

  20 October 20265 min readHomeownerPM Surya GharSubsidy

• On-Grid vs Hybrid vs Off-Grid Solar: Which Is Right?

  On-grid, hybrid or off-grid solar for an Indian home? Compare cost, backup, subsidy, net metering and payback, and pick the right system in 2026.

  20 October 20265 min readHomeownerSystem typesBattery

• Net Metering in India Explained, State by State

  How net metering works for rooftop solar in India: import, export, banking, settlement and surplus rates, with a 2026 table of state differences.

  20 October 20265 min readHomeownerNet meteringPolicy

• Maharashtra Rooftop Solar 2026: Subsidy, Net Metering

  Rooftop solar in Maharashtra in 2026: PM Surya Ghar and SMART subsidy, MSEDCL net metering, ₹2.82 surplus rate, grid support charge and FY27 tariffs.

  20 October 20266 min readState guideMaharashtraMSEDCL

• Madhya Pradesh Rooftop Solar 2026: Subsidy and Net Metering

  Rooftop solar in MP in 2026: PM Surya Ghar subsidy, MPERC net metering with Oct–Sep settlement, APPC credit, FY27 tariff, Indira Griha Jyoti and sizing.

  20 October 20265 min readState guideMadhya PradeshMperc

• Kerala Rooftop Solar 2026: KSEB Net Metering and Subsidy

  Rooftop solar in Kerala in 2026: PM Surya Ghar subsidy, KSERC 2025 rules, ₹2.79 surplus rate, storage above 10 kW, the 250-unit tariff cliff and sizing.

  20 October 20265 min readState guideKeralaKseb

• Karnataka Rooftop Solar 2026: BESCOM Net Metering Guide

  Rooftop solar in Karnataka in 2026: PM Surya Ghar subsidy, KERC export rates of ₹1.96–3.89, monthly net metering, Gruha Jyothi effect and BESCOM tariff.

  20 October 20265 min readState guideKarnatakaBESCOM

• How to Read Your Electricity Bill Before Going Solar

  Read your electricity bill like a solar engineer: units, slabs, fixed charges, FAC/FPPAS, duty, sanctioned load, and net-metering lines after solar.

  20 October 20265 min readHomeownerBillTariff

• How to Choose a Rooftop Solar Installer: Checklist

  A practical checklist to choose a rooftop solar installer in India: registration, quote line items, structure, earthing, warranties, service and red flags.

  20 October 20265 min readHomeownerInstallerChecklist

• How Solar Installers Can Win More Residential Jobs

  Practical ways for Indian solar installers to win more home rooftop jobs: fast bill-based quotes, honest payback, subsidy handling, proof of quality.

  20 October 20265 min readInstallerSalesMarketing

• How Much Solar for 300 Units a Month? 3 kW Explained

  300 units a month needs about 2.4 kW of solar; most homes fit 3 kW. Roof area, 2026 cost, ₹78,000 subsidy and real savings, city by city.

  20 October 20265 min readHomeownerSizingPM Surya Ghar

• How Much Solar Do You Need for 200 Units a Month?

  200 units a month needs about 1.5–2 kW of rooftop solar in most of India. See the maths, roof area, cost, subsidy and savings for 2026.

  20 October 20265 min readHomeownerSizingPM Surya Ghar

• Gujarat Rooftop Solar 2026: Subsidy, Net Metering, Tariff

  Rooftop solar in Gujarat in 2026: PM Surya Ghar subsidy, GUVNL and Torrent tariffs, FPPAS, ₹2.25 surplus rate, net metering and draft DRES rules.

  20 October 20265 min readState guideGujaratGuvnl

• Do I Need a Solar Battery in India? ToD, Outages, Cost

  Most Indian homes on net metering do not need a solar battery to save money. When a battery is worth it: outages, ToD tariffs, Kerala rules, and sizing.

  20 October 20265 min readHomeownerBatteryHybrid

• DCR vs Non-DCR Solar Panels: What Changed in 2026

  DCR vs non-DCR solar panels explained: subsidy rules, ALMM List-II cells from June 2026, price gap, performance and when non-DCR still makes sense.

  20 October 20265 min readHomeownerInstallerDCR

• Charging an EV with Rooftop Solar in India

  How much extra rooftop solar you need to charge an electric car or scooter at home, how net metering and ToD tariffs affect it, and wiring tips.

  20 October 20265 min readHomeownerEVSizing

• ALMM List-I and List-II Explained for Solar Installers

  ALMM for installers in 2026: List-I modules, List-II cells from 1 June 2026, who must comply, cut-off dates, exemptions, DCR, and how to check paperwork.

  20 October 20265 min readInstallerALMMDCR

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