"Solar to bahut mehnga hai" — yeh line hum roz sunte hain. Lekin jab hum price ki jagah poora hisaab dikhate hain, to zyadatar parivar kehte hain: "Itna fayda hai, pehle kyun nahi lagwaya?"
Chaliye, ek aam ghar ke 3 kW on-grid system ka hisaab dekhte hain.
Step 1: Kharcha kitna, subsidy kitni
| Cheez | Rakam |
|---|---|
| 3 kW system (andaazan, GST samet) | ₹1,80,000 |
| PM Surya Ghar central subsidy | − ₹78,000 |
| Aapka asli kharcha | ₹1,02,000 |
Subsidy seedhe aapke bank account mein aati hai, aur saara kaagaz hamari team karti hai.
Step 2: Har saal kitni bachat
- 1 kW system mahine mein lagbhag 135 unit banata hai, to 3 kW = 405 unit/mahina, yaani 4,860 unit/saal.
- Bijli ki dar ₹7/unit maanein, to har saal lagbhag ₹34,020 ki bachat — har mahine ~₹2,835.
Step 3: Return — bank FD se kahin aage
₹1,02,000 lagaakar har saal ₹34,020 wapas — yaani lagbhag 33% saalana return. Paisa sirf 3 saal mein wapas.
Iske baad jo bijli banegi, woh aapki muft bijli hai — panel 25 saal se zyada chalte hain.
| Investment | Saalana return (andaazan) |
|---|---|
| Bank FD | 6–7% |
| 3 kW rooftop solar | ~33% |
Step 4: 25 saal ka poora chitra
- 25 saal mein kul bachat: lagbhag ₹8,50,500
- Kharcha nikaal kar bhi faayda: lagbhag ₹7,48,500
- Aur bijli ki dar har kuch saal mein badhti hai — to asli bachat isse bhi zyada ho sakti hai.
Ek saath paisa nahi hai? EMI hai na
Bank loan se solar ₹1,500–2,000 mahine ki EMI mein lag sakta hai. Bahut ghar mein EMI utni hi hoti hai jitna pehle bill aata tha — aur loan khatam hote hi bill bhi khatam. BPL parivaron ko 2 kW par ₹1,10,000 tak subsidy mil sakti hai.
To kya solar mehnga hai?
Price dekhein to shayad. Hisaab dekhein to bilkul nahi. Solar kharcha nahi, ghar ki chhat par lagi ek aisi FD hai jo har mahine bill mein return deti hai.
Note: yeh andaazan hisaab hai — asli units aapki chhat, disha aur dhoop par nirbhar karte hain. Sahi aankda free site survey ke baad milta hai.
Apne bill ke hisaab se calculation dekhiye ya free site survey book kijiye.
