Solar Calculator Goa 2026
Size a rooftop system for your Goa home and see cost, subsidy and payback under PM Surya Ghar net metering with the Goa Electricity Department.
1 Your electricity
Enter your 6-digit PIN to auto-fill your district's average daily generation from NASA satellite data. You can always edit it below.
Indian residential tariffs typically run ₹6–₹9 per unit and rise every year. Check a recent bill for your exact slab rate.
2 Cost & generation
A complete on-grid setup (panels, inverter, structure, wiring, installation) runs about ₹50,000–₹60,000 per kW in 2026. Tier-1 brands (Tata, Adani, Waaree) cost a little more.
Most of India gets about 4 units (kWh) per kW per day on average; sunnier states (Rajasthan, Gujarat) can reach 4.5–5.
3 Subsidy & state top-up
Central subsidy: ₹30,000/kW up to 2 kW, +₹18,000 for the 3rd kW, capped at ₹78,000 for any system 3 kW and above (residential, up to 10 kW). As of May 2026 (per MNRE). Always confirm current rates at pmsuryaghar.gov.in before applying.
Some states add their own subsidy on top of the central one (e.g. Gujarat has offered ₹10,000/kW). Enter your state's per-kW top-up if any — leave 0 if unsure. Verify with your DISCOM.
4 How you'll pay
Indicative estimates only. Subsidy rules and tariffs change by government notification and vary by state/DISCOM. Assumes a gradual annual tariff rise and panel degradation. Confirm current PM Surya Ghar rates and get installer quotes before purchasing.
How PM Surya Ghar subsidy is calculated
• Up to 2 kW:
₹30,000 per kW (1 kW = ₹30,000; 2 kW = ₹60,000)• 3rd kW:
+₹18,000 (so 3 kW = ₹78,000)• 3 kW and above: capped at
₹78,000 (no extra above 3 kW; residential eligibility up to 10 kW)Net cost =
system cost − central subsidy − state top-up. Annual savings = annual units generated × tariff (capped at your usage). Payback = net cost ÷ annual savings; the free-electricity date is today plus the payback period. Source: Ministry of New & Renewable Energy / pmsuryaghar.gov.in — verify current values before applying.
Rooftop solar in Goa
Goa's power is distributed by the state-run Goa Electricity Department (GED) rather than a private DISCOM, covering homes across North and South Goa from Panaji to Margao and the coastal talukas. Domestic net metering is available up to your sanctioned load, generally to 10 kW for households, with surplus export credited against imports and settled periodically. GED terms are revised occasionally, so confirm the current net-metering and banking rules before applying.
Tariffs and typical savings
GED domestic tariffs are slab-based, rising from about 2.10 rupees per unit at the lowest slab to roughly 5.45-6.60 in the higher slabs. Air-conditioning load in Goa's humid climate pushes many homes into those upper slabs, where rooftop solar offsets the most expensive units. A coastal rooftop here yields around 4.4 units per kW per day. Convert your bill into an estimated size with our solar savings calculator or the nationwide India solar calculator. Most homes choose a grid-tied system without batteries to keep costs down; if you want backup during outages, size storage separately with the battery bank calculator.
Coastal sunshine and roof notes
Goa gets over 300 sunny days a year with strong irradiation, though the June to September monsoon sharply cuts output for a few months, so an annual average rather than a peak figure gives a fairer picture. Salt-laden coastal air makes quality mounting hardware and corrosion-resistant fittings worthwhile. A modest tilt toward true south captures the most annual energy - check yours with the solar tilt angle calculator.
How PM Surya Ghar applies
PM Surya Ghar: Muft Bijli Yojana pays 30,000 rupees per kW for the first 2 kW plus 18,000 for the 3rd kW, capping central support at 78,000 for systems of 3 kW and above, paid by DBT after commissioning. Goa is not a special-category hill state, so the standard central amounts apply; any GEDA promotional scheme is best confirmed directly. Many homeowners finance the balance with a collateral-free loan around 7% - model it in the solar loan EMI calculator.
A worked example
A 3 kW system in Panaji might generate about 4,800 units a year. Offsetting units priced near 5 rupees could save roughly 24,000 annually. With 78,000 central support cutting a gross cost near 1.7 lakh to well under 1 lakh net, payback often lands in the four-to-five year range. These are planning figures - actual output, tariffs and subsidy terms vary.
Solar calculators for other Indian states & UTs
Pick your state or union territory for localized subsidy, tariff and net-metering figures — or open the full India states directory or the national India solar calculator.
Frequently asked questions
The state-run Goa Electricity Department (GED) distributes power and processes domestic net-metering applications, generally up to 10 kW sanctioned load. Apply through the PM Surya Ghar portal along with GED, and confirm the latest banking and settlement terms before you commit.
The main incentive is the central PM Surya Ghar amount of up to 78,000 rupees. GEDA has run promotional schemes and fast-tracked approvals from time to time, but a confirmed per-kW state capital subsidy for homes is not assured - check geda.goa.gov.in for current offers.
At about 4.4 units per kW per day and upper-slab tariffs near 5 rupees per unit, a 3 kW system may generate roughly 4,800 units and save around 22,000 to 26,000 a year, depending on your consumption, AC load and the monsoon months.
Salt-laden air near the coast makes corrosion-resistant mounting and fittings important, and the June to September monsoon reduces generation for a few months. Even so, 300-plus sunny days give Goa strong year-round potential at around 4.4 units per kW per day.
Sources & standards
The subsidy amounts and net-metering framework used for Goa come from these central and state sources.
- Ministry of New and Renewable Energy — MNRE
The central ministry that designs and administers India's rooftop solar subsidy programme applied in this calculator. - PM Surya Ghar: Muft Bijli Yojana — Government of India
Official portal for the central subsidy of up to ₹78,000 for a 3 kW-plus system, the basis for the figures above. - Joint Electricity Regulatory Commission for Goa and Union Territories — JERC
The regulator whose Solar PV Grid Interactive System (Net Metering) Regulations govern how the Goa Electricity Department credits rooftop exports. - IEC 61215 & IEC 61730 — International Electrotechnical Commission
The module design-qualification and safety standards behind the equipment quality assumptions used here.