Starting bills of materials · Sep 2026
Packages are a sketch. The calculator is the drawing.
Typical hybrid stacks on current 640–650 W N-type plates and 5.12 kWh LFP. Copper, LFP and labour move. Green meter is billed by the DISCO, not us. After net-billing, do not pad kW just to export. Full write-ups: home, industry, single AC, fans.
Fans + lights
2–3 × 645 W · 1.2–3.6 kW hybrid · small LFP or tubular · existing 220 V fans. Not a 12 V bazaar kit. Fan solar →
Band: Rs 1.5–4.0 lakh
Single 1.5-ton
5–6 × 645 W · 3.6–6 kW hybrid. Day only, or + 2 × 5 kWh LFP for night shed. Inverter AC only. Single AC →
Day Rs 4.5–7 lakh · night Rs 9–13 lakh
Small house / shop
6–7 × 645 W plates · 3.6–6 kW hybrid · 1× 5 kWh LFP (or 4× tubular 200 Ah if budget is the only constraint) · L2 iron · 6 mm² DC. Daytime loads + night lights/fans/fridge.
Band: Rs 0.95–1.5 million
Family hybrid (default)
10 × 645 W · Nitrox/Knox 6 kW · 1–2 × 5 kWh LFP · L2/L3 14 SWG · 6–10 mm² · one inverter AC on backup if the bank is LFP. Home solar →
Band: Rs 1.7–2.5 million
Large house / small mill
16 × 645 W · 10 kW hybrid · 2–3 × 5 kWh LFP · elevated iron if the roof is tanks and dishes · 10 mm² · SPD + chemical earth.
Band: Rs 2.9–4.4 million
Farm / factory day PV
Often hybrid 3-phase or on-grid if a generator already covers shed. Ground-mount HDG. 700 W HJT if the plot is tight. Net-billing file. Battery only for control rooms unless the night load is real.
Band: quote from BOM calc
5–15 HP tube well
Day-only PV + VFD, no battery unless the motor must run after dusk. Oversize PV 20%. Government agri solarisation schemes are a separate file — we still size the array from HP and hours.
Use the tube-well calculator
On-grid 25 kW+
Huawei / Growatt 3P, PPIB installer, DISCO demand notice, AMI meter. Not a WhatsApp SKU. ≤25 kW no longer needs a separate NEPRA license. Industry page →