The most common question we receive from homeowners and businesses exploring solar is also the most reasonable one: what is this actually going to cost me?<\/p>\n
The internet offers a wide range of answers \u2014 from aspirationally low figures in government advertisements to alarmingly high quotes from first-time installers. The truth sits between them, and understanding what drives the cost is the only way to evaluate a quote intelligently.<\/p>\n
This is a real-number breakdown of what a rooftop solar system costs in India in 2025, what each component does, and what factors move the price up or down.<\/p>\n
Every rooftop solar system has four cost centres: solar panels, the inverter, the mounting structure, and installation. Civil work \u2014 cable trays, earthing, net metering applications \u2014 is sometimes included in installation and sometimes quoted separately.<\/p>\n
Solar Panels: \u20b918 \u2013 \u20b928 per Wp<\/p>\n
Panels are priced per watt-peak (Wp). A 500W panel at \u20b922\/Wp costs \u20b911,000. For a 5 kW system you need approximately 10 such panels at a total panel cost of roughly \u20b91.1 lakh. The range reflects differences in cell technology (poly vs mono PERC vs bifacial), brand, and efficiency rating. Higher-efficiency panels cost more per Wp but produce more energy per square metre \u2014 useful when roof space is limited.<\/p>\n
Indian-manufactured panels from Tier 1 manufacturers (Adani, Waaree, Vikram Solar, Tata Power Solar) are available at the lower end of this range. Imported panels and premium brands sit at the top.<\/p>\n
Inverter: \u20b915,000 \u2013 \u20b960,000 per unit (residential scale)<\/p>\n
The inverter converts DC electricity from your panels into AC electricity for your home or grid connection. For a 5 kW system, a string inverter from a reputable brand (Solis, Growatt, SMA, Fronius) costs \u20b920,000 \u2013 \u20b935,000. Microinverters and hybrid inverters with battery capability cost significantly more.<\/p>\n
Mounting Structure: \u20b98 \u2013 \u20b918 per Wp<\/strong><\/p>\n This is the component most often underpriced in budget quotes. A quality IS 875-certified, hot-dip galvanised structure for a 5 kW rooftop system costs \u20b940,000 \u2013 \u20b970,000 depending on roof type (RCC, metal sheet, or ballasted), tilt angle, and local wind zone requirements. Budget structures using uncertified steel and painted coatings can cost half this amount \u2014 and will show the consequences within 5\u20138 years.<\/p>\n Do not allow a low structure price to look like a saving. It is a deferred cost.<\/p>\n Installation and Civil Work: \u20b910,000 \u2013 \u20b935,000<\/strong><\/p>\n Labour for a standard 5 kW residential installation runs \u20b910,000 \u2013 \u20b920,000 for a one-to-two day job with a competent crew. Add cable trays, earthing pit, AC\/DC cabling, and net metering application fees (varies by DISCOM \u2014 TSSPDCL in Telangana, APSPDCL\/APEPDCL in AP) and total civil\/installation cost typically reaches \u20b920,000 \u2013 \u20b935,000.<\/p>\n The following are indicative all-in costs before subsidies, based on mid-range quality components and professional installation.<\/p>\n 1 kW system: \u20b955,000 \u2013 \u20b975,000 Prices per kW generally decrease at larger system sizes due to fixed cost amortisation.<\/p>\n For residential customers, the PM Surya Ghar Muft Bijli Yojana provides central government subsidies that meaningfully reduce the net cost.<\/p>\n For systems up to 2 kW: \u20b930,000\/kW subsidy On a 3 kW system with a gross cost of \u20b91.6 lakh, the subsidy reduces the net outlay to approximately \u20b994,000 \u2014 a 41% reduction. This scheme applies to residential connections only, not commercial or industrial.<\/p>\n Several factors legitimately increase the cost of a well-engineered system beyond these benchmarks.<\/p>\n Complex roof configurations \u2014 multiple slopes, parapets, shading obstacles \u2014 increase design and installation time. Coastal or high wind-zone locations require heavier structural specifications and heavier foundations. Metal sheet or waterproofed rooftops require ballasted (no-drill) mounting systems that cost more than standard RCC anchor systems. Remote sites with long cable runs or difficult access add logistical cost.<\/p>\n These are real cost drivers. If a quote is significantly below the ranges above and your site has any of these characteristics, the difference is coming out of component quality somewhere.<\/p>\n When you receive a solar quote, ask for a line-item breakdown. Specifically: panel brand and model number, inverter brand and model, structure material specification (steel grade, coating type and thickness), and installation scope. Any reputable installer provides this without hesitation. A quote with only a single total figure is not a quote \u2014 it is a price to be revised upward after order.<\/p>\n At Vlux, every proposal includes a full bill of quantities with material specifications, IS 875 structural compliance documentation, and a 25-year structural warranty. We offer free site assessments across Telangana, Andhra Pradesh, and pan-India. Get in touch to schedule yours.<\/p>\n","protected":false},"excerpt":{"rendered":"Total System Cost by Size: 2025 Estimates<\/h3>\n
\n3 kW system: \u20b91.4 lakh \u2013 \u20b91.9 lakh
\n5 kW system: \u20b92.2 lakh \u2013 \u20b93.0 lakh
\n10 kW system: \u20b94.0 lakh \u2013 \u20b95.5 lakh
\n25 kW commercial system: \u20b99.5 lakh \u2013 \u20b913 lakh
\n100 kW industrial system: \u20b935 lakh \u2013 \u20b950 lakh<\/p>\nWhat the PM Surya Ghar Subsidy Changes<\/h3>\n
\nFor systems from 2\u20133 kW: \u20b918,000\/kW for the additional capacity
\nAbove 3 kW: No further central subsidy (though some states add their own)<\/p>\nWhat Moves the Price Higher<\/h3>\n
What to Do with a Quote<\/h3>\n