Har ghar ka sawal aik hi hota hai — solar lagwana hai, lekin kitna bara system chahiye? Chhota lagwaya to faida nahi, bara lagwaya to paisa zaya. Is guide mein hum aap ko wohi hisaab sikhaein ge jo aik achha solar installer pehle din karta hai — sirf apne bill se, bina kisi mushkil formula ke.
Step 1: Apne Mahine ke Units Nikalein
Sab se pehle apna pichla bijli ka bill uthayein. Us par likhe hon ge ke aap ne mahine mein kitne units istemal kiye. Garmi mein ye zyada honge, sardi mein kam — is liye aik mahine ki bajaye pichle 3-4 mahinon ka ausat (average) nikalein. Ye ausat hi aap ke system ki bunyad hai.
Misal ke tor par: agar aap ke ghar ka ausat 300 units mahine ka hai, to ye aik darmiyane ghar ki khapat hai — na bohat chhota, na bohat bara.
Step 2: Roz ke Units ka Hisaab
Mahine ke units ko 30 se taqseem kar dein. 300 units wala ghar roz takreeban 10 units istemal karta hai. Solar panels din mein bijli banate hain — takreeban 4-5 ghantay ki achhi dhoop mein — is liye system itna bara hona chahiye ke wo roz ke 10 units bana sake.
Step 3: Panel Kitne Lagain Ge?
Aam tor par 1 kilowatt (kW) ka solar system din mein takreeban 4 se 5 units bana leta hai, achhi dhoop wale dinon mein. To 10 units roz ke liye takreeban 2 kW ka system kaafi hota hai. Lekin garmi, badal aur panel ki safai ka farq bhi parta hai — is liye hamesha thora margin rakhein.
Asaan usool: roz ke units ko 4.5 se taqseem kar dein, jo jawab aye wo takreeban aap ke system ki size (kW mein) hai. 10 / 4.5 = takreeban 2.2 kW. Ye aik andaza hai, har ghar ki chhat ki dhoop aur rukawatein alag hoti hain.
Step 4: Inverter ki Size Kaise Chunein?
Inverter wo device hai jo panel ki DC bijli ko ghar ki AC bijli mein badalta hai. Is ki size aap ke system se milni chahiye — 2 kW system ke liye takreeban 2-3 kW ka inverter theek rehta hai. Agar aage panels barhane ka irada hai to thora bara inverter lena samajhdari hai, taake baad mein dobara kharcha na ho.
Hybrid inverter wo hai jo battery ke sath bhi chalta hai aur load shedding mein bhi bijli deta hai. On-grid inverter sirf tab kaam karta hai jab grid bijli ho. Apni zaroorat aur apne ilaqay ki load shedding dekh kar faisla karein.
Step 5: Battery — Kitni Backup Chahiye?
Battery sirf utni hi lagayein jitni backup waqai chahiye. Sab se pehle tay karein ke load shedding ke waqt kon si cheezein chalani hain — sirf pankhe aur lights, ya fridge bhi? Har cheez ka watt nikal kar ghanton se zarab dein, to battery ki zaroorat samne aa jaye gi.
Misal: 2 pankhe (takreeban 75 watt har aik) + 4 LED bulbs (takreeban 10 watt har aik) = takreeban 190 watt. 4 ghantay ke liye takreeban 760 watt-hour chahiye. Isi hisaab se battery ki size tay hoti hai — lekin battery ki asli salahiyat (usable capacity) hamesha us ki likhi hui capacity se kam hoti hai, is ka khayal rakhein.
Ghaltiyan Jo Aksar Hoti Hain
1. Sirf qeemat dekh kar chhota system lagwa lena — phir bill kam nahi hota aur solar par bharosa uth jata hai.
2. Chhat ki dhoop ka waqt na dekhna — agar chhat par saara din saaya parta hai to panel poori bijli nahi banayen ge.
3. Battery par poora ghar chalane ki koshish — battery sirf zaroori cheezon ke liye hai, AC aur motor us par na chalaye.
4. Bina net metering ke bara system lagwana — agar aap ki zaroorat se zyada bijli bane gi to wo zaya jaye gi, is liye net metering ka tareeqa bhi samajhna zaroori hai.
Aakhri Baat
Solar aik lamba arsa chalne wali investment hai — jaldi mein faisla na karein. Apne bill ka ausat nikalein, chhat ki dhoop dekhein, aur 2-3 certified installers se quotation le kar milayein. Bijli ke rates aur net metering ke rules waqt ke sath badal sakte hain, is liye aakhri faisla apni DISCO ya NEPRA se confirm karke karein.
Bijli ka koi bhi kaam khud karne ki koshish na karein — hamesha certified electrician ki madad lein. Ye maloomat aik rehnumai hai, financial advice nahi.
Agle article mein hum net metering ka mukammal tareeqa batayen ge — darkhwast kaise dein, meter kaise lagta hai, aur bill mein faida kahan nazar ata hai. Apne ghar ke units aur sawal comment mein likhein.
Photo: Pexels
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