Calculators / Electricity savings

Estimate your electricity benefit.

Model onsite energy savings and export credit with your own assumptions.

अपनी खपत और दरों के आधार पर बिजली की बचत का अनुमान।

Practical solar knowledge

Read the savings estimate as a set of assumptions.

The value of a solar unit depends on where it goes. A unit used on site can avoid an eligible energy charge; a unit exported may receive a different credit. Fixed charges, minimum charges and local settlement rules can remain relevant.

Illustrative calculation

At 3 kWp and a chosen net yield of 4 kWh/kWp/day, the model estimates 4,380 kWh/year. With 70% used on site, 3,066 kWh are self-consumed and 1,314 kWh exported. At assumed values of ₹8 and ₹3 per kWh respectively, gross annual value is ₹28,470. Subtracting ₹3,000 operating expense leaves ₹25,470.

These values are a worked example, not a tariff or generation forecast. Try lower yield and lower self-consumption to see how sensitive your answer is. Use your DISCOM’s current tariff and settlement terms.

Use annual net savings in payback · Read model limitations

Editable illustration · Replace sample inputs

System size / क्षमता (kWp)DC module capacity. Range: 0.1–1000.Net daily yield / दैनिक उत्पादन (kWh per kWp)Illustrative input, not a location forecast. Use a site estimate already allowing for system losses. Range: 0.1–10.Desired self-consumption / स्वयं उपयोग (%)Share of generation used onsite; also limited by annual consumption. Range: 0–100.Monthly consumption / मासिक खपत (kWh)Use units from your bill, not the bill amount. Range: 0–1000000.Avoided energy tariff / प्रति यूनिट बचत (₹/kWh)Energy charges avoided per unit; excludes fixed charges. Range: 0–100.Export credit / निर्यात दर (₹/kWh)Use your actual DISCOM arrangement. Zero if exports earn no credit. Range: 0–100.Annual operating cost / वार्षिक खर्च (₹)Cleaning, servicing, and other recurring costs. Range: 0–10000000.

How the estimate works.

Annual generation = kWp × net daily yield × 365. Onsite use = the smaller of generation × self-consumption percentage and annual consumption. Gross benefit = onsite use × avoided tariff + exported energy × export credit. Net benefit = gross benefit − annual operating cost.

Annual averages do not model hourly consumption, seasons, shading, or the detailed DISCOM settlement method. Fixed charges and slab-tariff effects are not included. Export credit is a user assumption, not a promised rate.

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