Bifacial Solar Panels — Kab Sahi Hain
Bifacial solar panels dono taraf se bijli banate hain. Durg-Bhilai ke terraces par bifacial lagwane ke fayde, albedo reflection aur generation comparison.
Seedha jawab
Bifacial solar panels mein aage aur piche dono taraf photovoltaic cells lage hote hain. Durg aur Bhilai ke residential terraces par bifacial panels lagwane se aam taur par 10% se 18% extra unit generation milti hai, basharte structure ki height kam se kam 5 se 6 feet unchi ho aur terrace ka floor light-colored ya reflective ho. Agar aap low-profile (1–2 feet) structure par bifacial lagate hain, to piche se roshni nahi aayegi aur bifacial ka extra kharcha bekar chala jayega.
Market mein aajkal bifacial panels ki kaafi charcha hai. Bohot se vendors ise 'double power panel' bol kar bechte hain, jo ki galat hai. Bifacial panel 100% extra power nahi banata, balki surface reflection (jise technical bhasha mein Albedo effect kehte hain) se rear-side generation add karta hai. Chaliye samajhte hain ki Chhattisgarh ke mausam mein ye kab faydemand hai aur kab nahi.
Bifacial vs Standard Monofacial: Clear Comparison
| Parameter | Traditional Monofacial Panel | Dual-Glass Bifacial Panel |
|---|---|---|
| Light Absorption | Sirf samne (front side) se dhoop leta hai | Samne direct sun + piche reflected light absorb karta hai |
| Backside Material | White/Black Opaque Polymer Backsheet | 2.0mm Toughened Glass (Dual Glass Architecture) |
| Extra Generation Gain | 0% (Baseline) | Elevated structure par 10% se 18% additional generation |
| Weather & PID Durability | Standard durability (25-year performance warranty) | Dual glass hone se moisture, humidity aur hail resistant |
| Ideal Structure Height | 1.5 – 3 feet (standard low tilt) | Minimum 4.5 – 6 feet (pergola / gazebo elevated design) |
| Price Difference | Standard benchmark rate | Module level par 5% – 8% thoda premium |
Terrace Par Bifacial Lagwane Ke 3 Golden Rules
- 1Rule 1 — Elevated Structure Zaroori Hai: Panel aur chhat ke farsh ke beech jitna distance hoga, utni diffused light piche bounce hogi. Kam se kam 5 feet height honi chahiye taaki terrace par walking space bhi mile.
- 2Rule 2 — Farsh Ka Rang (Albedo): Agar chhat par dark waterproofing ki hui hai to reflection 10% se kam hoga. Agar chhat par white reflective paint, light mosaic tiles, ya white heat-reflective coating hai, to backside generation 15-20% tak jump kar jaati hai.
- 3Rule 3 — Inter-Row Spacing: Panels ki lines ke beech aapas mein shadow nahi padni chahiye taaki zameen par poori dhoop gire aur bounce ho sake.
Kya Bifacial Par PM Surya Ghar Subsidy Milti Hai?
Haan, lekin ek zaroori shart ke saath: panels DCR (Domestic Content Requirement) certified hone chahiye. Agar bifacial module MNRE ke ALMM list mein registered hai aur Indian cell se bana hai, to aapko PM Surya Ghar ki poori ₹78,000 central subsidy milti hai. Durg Bhilai Solar sirf MNRE-approved Tier-1 DCR bifacial panels use karta hai.
Frequently Asked Questions (FAQs)
Aksar poochhe jaane waale sawaal
- Kya bifacial panel tootne ka darr zyada hota hai?
- Nahi, balki bifacial panel do glass layers (front aur back 2.0mm tempered glass) se bana hota hai. Traditional backsheet panels ke mukable dual glass module hailstorm, aandhi aur atmospheric moisture ke khilaf zyada durable hota hai.
- Kya tin shed par bifacial lagana chahiye?
- Agar tin shed par panel bilkul chipka kar lagaya jaa raha hai, to bifacial ka koi fayda nahi hoga kyunki piche roshni nahi jayegi. Tin shed par standard monofacial panel zyada cost-effective rehta hai.
- 5 kW bifacial lagane par kitna extra unit banega?
- Standard 5 kW monofacial jahan mahine mein 600-650 units deta hai, wahi elevated white-terrace par laga bifacial 5 kW system mahine mein 680 se 740 units tak generate kar sakta hai.