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Rajkot Solar Calculator (PGVCL)

Rooftop solar payback for Rajkot and Saurashtra on PGVCL, using Gujarat's strong sunshine, the FPPPA charge and 15% duty.

Updated · By Niraj Kumar · 1 source

Your home

Solar forSolar for
From your bill, enterFrom your bill, enter
₹
₹100₹50K

About 352 units a month on the PGVCL tariff. Use a year's average if your bill swings with the seasons.

Roof typeRoof type

Fine-tune

kW

Sized to cover a year of your consumption, at 5.8 peak sun hours a day in Gujarat.

sq ft

About 100 sq ft per kW. Leave at 0 for no limit.

₹

Typical for an on-grid system from an empanelled vendor. Replace it with your quote.

%
0%15%

Indian residential tariffs have historically risen 4-7% a year.

%
0%2%

Monocrystalline panels typically lose about 0.5% a year.

How you payHow you pay
Pays for itself in2.3 yearsthen ₹14.3 L ahead after 25 years

A 2.5 kW system makes about 340 units a month, 96% of your use. Your bill drops from ₹3,000 to about ₹117 in year one.

Installed cost
₹1,50,000
PM Surya Ghar subsidy
− ₹69,000
Net cost to you
₹81,000
Saving in year one
₹34,670
Return (IRR)
47.0% a year
over 25 years, before tax
CO₂ avoided
69 tonnes
over 25 years
Subsidy46%
  • You pay54%
  • Central subsidy46%
Your money over 25 yearsStill to recoverAhead
₹-5 L₹0₹5 L₹10 L₹15 LPayback, year 2.304812162025
Year-by-year cash flowShow
YearUnits madeBills without solarBills with solarUpkeep and EMIsRunning total
14,075₹36,076₹1,406₹0-₹46,330
24,055₹37,880₹1,629₹0-₹10,079
34,035₹39,774₹1,869₹0₹27,826
44,014₹41,762₹2,129₹0₹67,459
53,994₹43,851₹2,410₹0₹1,08,900
63,974₹46,043₹2,712₹1,500₹1,50,731
73,954₹48,345₹3,038₹1,500₹1,94,538
83,935₹50,762₹3,388₹1,500₹2,40,413
93,915₹53,301₹3,764₹1,500₹2,88,449
103,895₹55,966₹4,169₹1,500₹3,38,746
113,876₹58,764₹4,604₹1,500₹3,91,406
123,857₹61,702₹5,070₹19,000₹4,29,038
133,837₹64,787₹5,571₹1,500₹4,86,754
143,818₹68,027₹6,107₹1,500₹5,47,174
153,799₹71,428₹6,682₹1,500₹6,10,420
163,780₹74,999₹7,298₹1,500₹6,76,621
173,761₹78,749₹7,957₹1,500₹7,45,914
183,742₹82,687₹8,662₹1,500₹8,18,439
193,724₹86,821₹9,416₹1,500₹8,94,343
203,705₹91,162₹10,222₹1,500₹9,73,783
213,686₹95,720₹11,084₹1,500₹10,56,920
223,668₹1,00,506₹12,004₹1,500₹11,43,922
233,650₹1,05,532₹12,987₹1,500₹12,34,966
243,631₹1,10,808₹14,036₹1,500₹13,30,238
253,613₹1,16,349₹15,173₹1,500₹14,29,914

How the Rajkot Solar Calculator (PGVCL) works

Saving₍y₎ = [Bill(U) − Bill(U − G₍y₎/12)] × 12 × (1 + e)^(y−1), G₍y₎ = kW × H × 365 × PR × (1 − d)^(y−1)

This page uses the same method as the Solar ROI Calculator India, which explains each term and assumption in full.

Worked example

A Rajkot home on PGVCL with a ₹2,500 monthly bill and a flat RCC roof, assuming prices rise 5% a year.

  1. 1Working the bill back through the PGVCL slabs, charges and duty gives about 300 units a month
  2. 2At 5.8 peak sun hours, 2 kW makes about 272 units a month, 91% of that use
  3. 32 kW at ₹60,000 per kW costs ₹1,20,000; PM Surya Ghar pays ₹60,000, leaving ₹60,000
  4. 4The first year saves ₹27,316, and the saving grows as tariffs rise

The system pays for itself in about 2.1 years and leaves the household about ₹11,27,996 ahead over 25 years.

Frequently asked questions

Does this work for DGVCL, MGVCL and UGVCL too?

Yes for the tariff: GERC sets one residential tariff for all four state DISCOMs, so Surat (DGVCL), Vadodara (MGVCL) and north Gujarat (UGVCL) are billed the same way. Ahmedabad and Surat city customers of Torrent Power are on a different tariff.

What is FPPPA and why is it so large?

The Fuel and Power Purchase Price Adjustment passes changes in the cost of buying power on to consumers, and in Gujarat it is set quarterly and applies to every unit. At about ₹3.15 it is often close to the energy charge itself, which is why each unit solar replaces saves more than the slab rate suggests.

How does net metering settle on PGVCL?

Net metering with surplus units bought back by the DISCOM at the GERC rate at the end of each billing cycle.

Sources

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