Yes. Solar panels still generate electricity on cloudy or rainy days, though output typically drops by about 10–40% depending on cloud cover. Modern modules are optimized for low-light conditions; proper tilt and array sizing help maintain stable annual energy yield.

Quick rule of thumb: 1 kW ≈ 3–4 kWh per day (≈ 90–120 kWh per month). A simple estimate is: required kW ≈ your monthly consumption (kWh) ÷ 110. Actual size depends on roof area, future loads (AC/EV), and peak sun hours.

Yes—if you choose a hybrid or off-grid system with batteries. A pure grid-tie system shuts down during outages due to anti-islanding safety, but hybrid systems keep your critical loads (lights, fans, router, fridge) running from stored energy.

Residential rooftop projects may qualify for capital subsidies and net-metering benefits, which vary by region and policy updates. Eligibility, slab (kW bracket), and percentages change over time; your installer can assist with application and documentation.

Typically around 350–450 sq.ft (≈ 32–42 m²). A 5 kW array usually uses about 9–10 panels (≈ 540–560 W each). The raw panel footprint is ~260–280 sq.ft, and with spacing, tilt, and walkways the total area needed is ~350–450 sq.ft.