Solar for Petrol Pumps in India: 2026 Guide

Should a petrol pump install rooftop solar in India?

Yes — a fuel station is one of the best commercial fits for rooftop solar in India because its electricity load runs through the day, and the country's largest fuel retailer has already proved the model at scale: IndianOil reports 34,641 solarised retail outlets — more than 89% of its network — with 172.5 MW of solar capacity installed at retail outlets as of 31 December 2024.

TL;DR: Petrol pumps run dispensers, compressors, lights, CCTV and now EV chargers mostly in daylight, so solar directly offsets expensive commercial-tariff power and diesel. Indicative system sizes run from about 15 kW for a small city outlet to 100 kW or more for a highway station with EV charging. A 100 kW rooftop at Sun Wave's published reference rate of ₹23,000/kW (ex-GST) is about ₹23 lakh before GST — roughly ₹25 lakh with the blended GST load — and can generate around 1.5–1.6 lakh units a year in North India. There is no PM Surya Ghar subsidy for commercial sites; the return comes from tariff savings, depreciation and lower diesel use.

Last verified: 13 November 2026

Why petrol pumps are a good solar fit

A fuel station's load profile is close to ideal for solar:

• Daylight-heavy consumption. Dispenser pumps, price displays, air compressors for tyre inflation, canopy and forecourt lighting, CCTV, signage and billing systems all run while the sun is up.
• New loads arriving in daylight too. EV charging points being added at fuel stations consume power mostly during the day, which solar serves directly.
• Expensive backup power. Where grid supply is unreliable, stations run diesel generator sets. Our comparison of solar against diesel generator costs shows why every kWh of solar displaces some of the most expensive power a small business buys.
• Uninterrupted operations matter. A station that cannot dispense fuel cannot earn. A solar plant with battery or grid support reduces dependence on a single supply source.

What India's oil marketing companies have already done

IndianOil has run a solarisation drive across its retail network for years. Its own published figures:

Independent installers are doing the same for individual dealers. One recent example: a vendor installed a 150 kW grid-connected rooftop at an IndianOil station in Guwahati and a 125 kW system at a station in Varanasi in 2026, with the two systems together estimated to generate about 376,200 units a year and save around ₹26.8 lakh annually; the vendor reports paybacks of 4–5 years (Guwahati) and about 5.2 years (Varanasi) (Freyr Energy case study). Treat vendor-reported savings as estimates, not guarantees.

What size solar system does a petrol pump need?

It depends on the station's connected load and whether it is on three-phase supply. As indicative design bands, based on the installed examples above and typical station loads:

The right way to size is from twelve months of electricity bills, not from the roof area alone. Our guide on sizing a solar plant for a factory walks through the same bill-based method, which applies to any commercial site. A 100 kW plant needs roughly 550–650 sq m of shadow-free area across the canopy, station building and, where land allows, an elevated or ground-mounted section — our roof area guide covers the arithmetic.

What does a 100 kW petrol pump solar system cost?

For qualifying CAPEX rooftop projects at 100 kW, Sun Wave's published reference rate is ₹23,000 per kW excluding GST — about ₹23 lakh (final price after a site survey and engineering scope). Worked example with the assumptions stated:

Two caveats on that payback. First, it moves with the quote you actually get: the independently reported case study above shows 4–5 years at that vendor's pricing. Second, it assumes the station consumes most of the generation in real time, which suits a fuel station's daytime load; whatever surplus you export earns only the net-metering credit your DISCOM allows. Do not treat any payback figure as a guaranteed return.

For a purchase financed by loan rather than CAPEX, our guides on solar bank loans and the RESCO/OPEX model cover the alternatives, and accelerated depreciation is explained in our tax benefits guide.

Net metering, approvals and subsidy rules for petrol pumps

• No PM Surya Ghar subsidy. The central CFA is for residential consumers and resident welfare associations / group housing societies only — it does not apply to commercial sites like fuel stations. Our PM Surya Ghar explainer sets out who qualifies. Our commercial solar subsidy guide explains what support does exist for businesses.
• Commercial net metering applies. Fuel stations connect under their state's commercial/industrial rooftop net metering rules, with state-specific capacity caps and settlement rules. Start with our net metering policy guide and the state-level industrial guides, such as Haryana's DHBVN process or Delhi's industrial net metering.
• Sanctioned load may need an increase. If the system size exceeds what the connection can absorb, an application to raise sanctioned load comes first — our Haryana sanctioned-load guide shows the pattern.
• Insurance. A solar plant on a fuel-storage site should be covered properly; our industrial solar insurance guide explains the cover set.

Installation notes: structures, safety and downtime

• Use every surface. Canopy roofs, the station building's roof, and where land is spare, elevated structures over parking or ground-mounted arrays inside the plot boundary.
• Safety around fuel storage is non-negotiable. A forecourt is a hazardous-area environment: cabling routes, earthing, lightning protection and equipment placement must follow the oil marketing company's site guidelines and applicable fire-safety norms. Our earthing and lightning protection guide and safety standards overview cover the engineering basics.
• Minimal disruption. Station work is phased around fueling hours; our phased shutdown planning guide describes the sequencing method used on operating industrial sites.

Frequently Asked Questions

What size solar system does a petrol pump need?

Most stations fit somewhere between 10 kW and 100 kW. A small city outlet with billing, lighting and CCTV may need only 10–25 kW, while a large highway station with food courts and EV charging can justify 100 kW or more. Size from twelve months of bills, and match the plant to daytime consumption so most generation is self-consumed.

Is there a government subsidy for solar on a petrol pump?

No. The PM Surya Ghar central subsidy is restricted to residential consumers and housing associations; commercial installations do not qualify. The financial benefits for a business come from tariff savings, accelerated depreciation, and — where conditions are met — GST input tax credit, as covered in our tax guide.

How much does a 100 kW solar system cost for a fuel station?

At Sun Wave's published reference rate of ₹23,000/kW ex-GST for qualifying CAPEX rooftop projects at 100 kW, the plant is about ₹23 lakh before GST and roughly ₹25 lakh with the blended GST load. The final price follows a site survey and engineering scope.

How much electricity does a 100 kW solar plant generate in North India?

Roughly 1.5–1.6 lakh units a year, based on 4.2–4.5 units per kW per day averaged across the year in North Indian cities. The city-wise spread is in our units-per-kW guide.

Can solar replace the diesel generator at a petrol pump?

Not entirely. A grid-connected solar plant reduces daytime grid purchases; the DG set remains for outages unless you add battery storage. Even so, every unit of solar displaces some diesel-generated power, which is typically the most expensive power a station uses. Our solar vs diesel comparison has the numbers.

Does net metering work for petrol pumps?

Yes, under each state's commercial or industrial rooftop category, subject to that state's capacity caps and settlement rules. Surplus export is compensated at DISCOM-specific rates that are usually well below the commercial tariff, so a right-sized plant that mostly self-consumes earns the best return. Our net metering policy guide explains the framework.