Solar Calculator Daman, Diu & Dadra Nagar Haveli 2026

Rooftop solar in Dadra and Nagar Haveli and Daman and Diu: the DNHDDPDCL setup

Homes across this union territory are supplied by the DNH and DD Power Distribution Corporation (DNHDDPDCL), the single distribution utility for Silvassa, Daman, Diu and the surrounding areas. It handles connections, metering and the rooftop-solar applications routed through the national PM Surya Ghar portal, so there is one clear point of contact for going solar here.

Net metering and a very low tariff

Under net metering the units your panels push to the grid are set off against the units you draw, and you pay only the net. The catch, unusual for India, is that DNH and DD has among the lowest residential tariffs in the country. Domestic slabs run from roughly 1.60 rupees per unit at the bottom to about 3.60 rupees at the top, so we use a representative figure near 3 rupees per unit. That is a genuine advantage for your monthly bill, but it also means bill savings alone are modest. Here the economics of rooftop solar are driven far more by the upfront subsidy than by the rupees you shave off each bill.

• Single utility: DNHDDPDCL across Dadra and Nagar Haveli, Daman and Diu.
• Net metering offsets exports against imports on the bill.
• Tariffs are among India's cheapest, so payback leans on the subsidy, not the savings.

Coastal and western sunshine

The territory sits on the sunny western coast and inland belt near Gujarat, with strong, fairly reliable irradiance for most of the year and a short south-west monsoon dip. We use a yield of about 4.3 units per kW per day as an annual average, which already allows for cloudy and dusty spells. Test different sizes with our system size calculator and the on-grid solar calculator.

How PM Surya Ghar applies

The national PM Surya Ghar: Muft Bijli Yojana pays 30,000 rupees per kW for the first 2 kW, adds ₹18,000 for the third kW, and caps at 78,000 rupees for systems of 3 kW and above, allowed up to 10 kW for a home. The money arrives as a direct bank transfer after commissioning and inspection, and collateral-free loans near 7 percent are available. No separate DNH and DD capital top-up is confirmed, so treat extra-subsidy claims with caution.

A quick worked example

Take a 3 kW system in Daman. At about 4.3 units per kW per day it makes near 12.9 units a day, close to 387 units a month. At the low local tariff near 3 rupees a unit, that offsets only about 1,200 rupees a month, so annual savings sit near ₹14,500 rupees. But after the 78,000 rupee subsidy the net cost is small, which is why the subsidy, not the bill, decides your payback here. Check repayments on the solar loan EMI calculator and compare outcomes on the solar savings calculator.

Solar calculators for nearby states & UTs

Compare subsidy, tariff and net-metering figures with the neighbouring states, or see all 36 in the India states directory and the national India solar calculator.

Frequently asked questions

The DNH and DD Power Distribution Corporation (DNHDDPDCL) is the single utility for the whole union territory. It manages your connection, meter and the net-metering side of any rooftop solar application filed through PM Surya Ghar.

It still can be, but for a different reason. Because DNH and DD has among the lowest domestic tariffs in India, bill savings are modest. The case rests mainly on the PM Surya Ghar subsidy of up to ₹78,000 rupees, which cuts the upfront cost sharply.

Only the national PM Surya Ghar amount is confirmed: ₹30,000 per kW up to 2 kW, plus ₹18,000 for the third kW, capped at 78,000 rupees for 3 kW and above, paid by bank transfer after commissioning. No separate territory capital top-up is confirmed at present.

For many households a 2 to 3 kW system covers daytime use well. At about 4.3 units per kW per day a 3 kW array makes roughly 380 units a month. Use our size and savings calculators to match the system to your own consumption before deciding.

About 13 units a day or 4,673 units a year on average, from about 7.2 a day in July to 16.0 a day in February, according to PVGIS data for panels at the best fixed angle. Shading, dust and orientation change the result.