1. On-Grid Inverter: Sirf grid (WAPDA) ke sath kaam karta hai. Battery nahi chala sakta. Sasta. Day-only solar ke liye perfect. Jab WAPDA jaye, solar bhi band ho jata hai (safety reason).

2. Hybrid Inverter: Solar + Battery + Grid teeno handle karta hai. Smart switching karta hai. Sab se popular choice ghar walon ke liye. Net metering bhi support karta hai.

3. Off-Grid Inverter: Sirf battery se chalta hai (grid se cut). Pure independent system. Mostly farms, dehati areas.

Recommendation: Ghar ke liye Hybrid. Office/factory (day-only) ke liye On-Grid. Tube well farm ke liye Off-Grid.

Inverter ki KW rating = woh kitna load ek time mein chala sakta hai.

Example: 5KW inverter = 5000W tak ka load handle kar sakta hai ek saath.

Safety rule: Apne peak load se 25-30% bara inverter lein — future expansion + safety.

P-Type (purana standard): 80-85% market mein. Sasta. Efficiency 18-21%. 25 saal warranty.

N-Type (naya, behtar): 20-25% efficiency. Less degradation. Hot weather mein better performance. 30 saal warranty. 15-25% mehnga.

Recommendation: Budget allow kare to N-Type. Long-term mein 5-10% zyada bijli milegi.

Monofacial: Sirf upar wali side bijli banati hai. Sab se common. Sasta.

Bifacial: Dono sides se bijli banati hai. 10-25% extra bijli (reflection se).

Recommendation: Ghar ke chhat pe Monofacial kafi hai. Open ground pe Bifacial 15-20% zyada degi.

585W abhi sab se popular — best price/performance balance.
600W+ N-Type Bifacial — premium. Less panels chahiye honge. Mehnga.
Tip: Same wattage ki panels lein — mix nahi karein.

Tubular Lead-Acid: Initial cost kam. Har shop pe milti hai. Sirf 3-5 saal life. 50% capacity usable.

Lithium (LiFePO4): 8-10 saal life. No maintenance. 80% capacity usable. 2-3x mehngi upfront.

Long-term: Lithium ek baar lo, 10 saal chalegi. Tubular 2-3 baar replace karna parega.

AH: Battery ki capacity. 200AH at 12V = 2.4 kWh total.
DoD: Kitni percent use kar sakte hain. Tubular: 50%. Lithium: 80%.
Isi liye Lithium ki effective capacity zyada hoti hai!

Haan bilkul chalega. DC Inverter AC lein — 40% kam bijli use karta hai. Battery se chalana ho to bari battery chahiye. Day-only mein 3KW solar = 1.5T AC easily.

Extra solar bijli WAPDA ko jati hai, credit milta hai. Setup cost ~Rs 60-80k. 5KW+ systems ke liye worth hai.

585W panel = ~30 sq.ft. 5 KW (9 panels) = ~270 sq.ft. 10 KW = ~510 sq.ft. South-facing best.

Full home (5KW): 3-5 saal. Day-only (10KW): 2-3 saal. Backup only: 5-7 saal. Panels ki warranty 25 saal.

PWM: sasta, 20-30% loss. Chhote setups. MPPT: mehnga, 30% zyada efficient. 200W+ panels = MPPT zaroor.