Solar Calculator Assam 2026

Rooftop solar in Assam: APDCL, net metering and savings

Assam's electricity is distributed by APDCL (Assam Power Distribution Company Limited), the state DISCOM that handles connections, metering and rooftop approvals across the Brahmaputra valley and the hills. Residential systems connect to the grid under AERC net-metering regulations, so the surplus units you export run a bi-directional meter backwards and are credited against the units you import.

Tariffs and what you save

APDCL bills homes on rising slabs. Low usage sits near ₹4-₹6 per unit while mid and upper slabs climb past ₹7 per unit, so we take about ₹6.5 per unit as a representative value for the grid power your panels displace. Each self-consumed unit avoids that retail rate, so sizing to your own load saves more than exporting surplus, which settles lower. Model the flow with the on-grid solar calculator.

Sunshine in the North East

Assam is one of India's cloudier, wetter states, with a long monsoon and frequent overcast skies, so peak sun hours are modest at roughly 3.7 a day. Each 1 kW of panels then generates about 3.7 units daily, near 1,350 units a year, lower than the sunny plains but still worthwhile against high tariffs. Right-size your array with the system size calculator.

PM Surya Ghar and Assam's special-category status

PM Surya Ghar Muft Bijli Yojana pays ₹33,000 per kW for the first 2 kW, plus ₹19,800 for the 3rd kW, capped at ₹85,800 for 3 kW and above, up to 10 kW, released by Direct Benefit Transfer after commissioning. As a special-category state under MNRE's PM Surya Ghar guidelines, Assam gets the higher central rate: ₹33,000 per kW for the first 2 kW and ₹19,800 for the third kW, so ₹85,800 for 3 kW and above (the general rate elsewhere is ₹85,800). That extra amount is not a confirmed fixed figure here, so verify current terms on pmsuryaghar.gov.in before you budget; our calculator keeps the state top-up at zero. Loans near 7 percent cover the balance, which you can check with the solar loan EMI calculator.

Worked example

A 3 kW system in Guwahati generates roughly 4,050 units a year. At ₹6.5 per unit that offsets about ₹26,330 of grid power annually. With up to ₹85,800 back from PM Surya Ghar, the net cost after subsidy often pays back in a handful of years. Start from the India solar calculator and treat every figure as indicative until confirmed with APDCL.

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

APDCL (Assam Power Distribution Company Limited) is the state DISCOM. It processes your net-metering application, installs the bi-directional meter and approves grid connection for residential rooftop systems across Assam.

Assam has a long monsoon and frequent cloud cover, so peak sun hours are around 3.9 a day versus 4.5 or more in sunnier states. A 1 kW system makes about 3.7 units daily here, so panels still pay off but yields are more modest.

As a special-category state under MNRE's PM Surya Ghar guidelines, Assam gets the higher central rate: ₹33,000 per kW for the first 2 kW and ₹19,800 for the third kW, so ₹85,800 for 3 kW and above (the general rate elsewhere is ₹85,800). It is not confirmed as a fixed figure, so verify current terms on pmsuryaghar.gov.in; our calculator keeps the state top-up at zero to stay conservative.

A bi-directional meter credits exported units against imported units, and credits reduce your next bills. Surplus at the settlement period is bought back at a lower rate, so it is best to self-consume as much of your generation as you can.

About 11 units a day or 4,029 units a year on average, from about 7.8 a day in July to 13.3 a day in February, according to PVGIS data for panels at the best fixed angle. Shading, dust and orientation change the result.