A 3 kW system suits smaller independent houses and 1–2 BHK homes in Jodhpur with moderate consumption — typically households running fans, lights, a refrigerator, a water pump and one or two air conditioners used seasonally rather than continuously. It is also the smallest size that attracts the maximum ₹78,000 central subsidy, which makes it the most subsidy-efficient entry point into rooftop solar.
The consumption band that usually matches a 3 kW array is 250 to 400 units per month averaged across the year. Because Jodhpur load is heavily seasonal, check a summer bill and a winter bill rather than one month in isolation — sizing off a mild month is the most common way people end up with a system that disappoints them in May.
A 3 kW array typically needs 240 to 300 sq ft of shade-free roof using standard mono PERC modules. Bifacial or higher-wattage modules can reduce that; a tilted or elevated structure can recover area on an awkward roof.
Remember that this is usable area. Water tanks, the stairwell mumty and its winter shadow, parapets and walking space between rows all come off the number you measured with a tape.
In the Jodhpur region a well-oriented, unshaded, clean array of this size would typically be expected to produce in the range of 330 to 420 units per month averaged across the year, with summer months above that range and winter months below it.
| Modules | Six to eight mono PERC modules depending on wattage, ALMM-listed |
|---|---|
| Inverter | 3 kW grid-tied string inverter with MPPT |
| Mounting structure | Hot-dip galvanised steel, specified to the site wind-load class |
| Protection | DC and AC isolators, surge protection device, dedicated earthing pits |
| Metering | Bidirectional net meter supplied and installed by JdVVNL |
| Monitoring | Generation monitoring through the inverter manufacturer's app |
| After handover | Scheduled cleaning and electrical checks during the AMC period |
| Indicative system cost | [VERIFY: your current 3 kW price range] |
|---|---|
| PM Surya Ghar central subsidy | Up to ₹78,000 for systems of 3 kW and above |
| Indicative net cost after subsidy | Gross cost less up to ₹78,000 central subsidy |
The subsidy is credited by the government directly to your bank account after installation and DISCOM inspection. It is not a discount applied to the invoice, so you should plan for the full amount up front and treat the subsidy as a reimbursement. Details on the solar subsidy in Jodhpur page.
The PM Surya Ghar slab pays ₹30,000 per kW for the first 2 kW and ₹18,000 for the third — ₹78,000 in total — and then stops. A 3 kW system therefore attracts the full central subsidy while being the smallest and cheapest array that does so. If your consumption genuinely sits in the 250–400 unit band, this is the most efficient use of the scheme available to you.
It will not run your home during a JdVVNL outage — a standard on-grid inverter disconnects when grid supply fails, as a safety requirement. It will not take your bill to zero, because fixed charges and meter rent continue regardless. And it will not hit the generation range above if the array is shaded or left dirty, which is why cleaning is part of the AMC rather than an afterthought.