Your net-zero partner, from audit to plant to report

Rooftop solar is installed above your production floor, so work normally continues below. We plan the installation around your shifts, schedule any shutdowns or tie-in work (typically a few hours for the grid connection) for planned breaks, and follow site safety rules for work at height, electrical isolation and permits. Our team completes a roof and load survey before we start, so there are no surprises.

Solar generates only in daylight, so at night your plant draws from the grid or your existing backup as usual. For 24/7 operations, solar cuts your daytime bill, and battery storage can shift some solar energy to evening peaks or provide backup. We size storage only where it pays off, and we will tell you if it doesn't.

Our in-house team handles operation and maintenance, including panel cleaning, inverter checks, remote monitoring and performance reports. Under our standard O&M contract, we respond to customer requests within 48 hours and resolve them promptly. We guarantee a minimum generation based on the customer's location.

Component warranties come from the manufacturers: panels typically carry 12–15 years on the product and 25–30 years on performance, and inverters typically 5–12 years. We help you handle any claims, so you deal with one point of contact.

Owning the plant (capex). You pay upfront and keep all the savings. Payback for industrial rooftops is typically 2–5 years, depending on your tariff, how much of the power you use during the day, and the roof. You own the plant, carry O&M, and benefit from any tax advantages that apply under current rules.

RESCO / OPEX. WRS builds, owns and operates the plant, and you pay only for the power it produces, at a tariff below your grid rate. You invest nothing, and maintenance and performance risk are ours.

It depends on your daytime load, your tariff and how much shadow-free roof you have. As a rule of thumb, 1 kW needs about 100 sq ft of roof. We size the plant to your load, so you use what you generate instead of paying for capacity you can't use. Our solar calculator gives an indicative size in a minute, and the site survey confirms it.

Output is lower on cloudy days, and annual generation estimates already allow for the monsoon. Dust and bird droppings also cut output, which is why regular module cleaning and remote monitoring are part of O&M: a drop in performance shows up in the reports, and we act on it.

A standard grid-connected plant switches itself off when the grid goes down. This is a safety requirement, so that no power is pushed into lines that crews may be working on.

If you need power during outages, battery storage with the right inverter set-up can supply backup for the loads you choose, and it can cut diesel genset use. At the AIMA Index International Pavilion, WRS arranged battery storage as a service, charged by solar, so the pavilion ran without a diesel genset.

Every roof is checked for strength, condition and shading before design. We choose the mounting method for your roof type, flag any weak sections before work starts, and review any roof warranty during the survey. It's worth checking your roof manufacturer's terms too.

Yes. We prepare and follow up the MSEDCL net-metering application and the other approvals the project needs. Net metering lets the plant export surplus units and offsets them on your bill. Eligibility and limits depend on current state rules, so we tell you what applies to your connection.

Businesses that own solar assets may be able to claim accelerated depreciation. The rate and eligibility change, so confirm the current rules with your chartered accountant, and plan the commissioning date with them.

An ETP treats industrial process wastewater. An STP treats sewage from toilets and canteens. Many factories need both. If you need to recover and reuse nearly all your process water, a zero liquid discharge (ZLD) system is the next step. Whether ZLD applies depends on your industry, location and regulator, and we can advise.

Treated water can often be reused in the process or for utilities, depending on its quality and the use. We assess this in the water audit.

Start with a baseline of your emissions: Scope 1 (fuel you burn on site), Scope 2 (electricity you buy) and Scope 3 (everything else in your value chain). WRS measures this and prepares the BRSR, CBAM or CDP data your customers ask for, led by a SEBI-certified BRSR auditor on our team.

Solar then cuts your Scope 2 emissions, and you can show the reduction in the same report. A free carbon assessment shows where you stand and what to measure first.

Yes. WRS has delivered projects in 22 cities across India and Africa, including a 335 kW solar plant for Zaer PLC in Eritrea that cut diesel costs by about 70%. Our engineering team is based in Nashik, and for overseas enquiries we reply by email and can arrange a video call across time zones.