Live, right now
What would your rooftop generate right now?
Pick your city and we'll pull today's actual sunlight conditions to estimate your system's live output - no signup needed.
Live estimate based on today's actual weather at your selected city. Assumes a well-installed, unshaded-by-default on-grid system; actual generation depends on your specific roof, equipment and site conditions - book a free site visit for a precise number.
Seasonal forecast — this month vs. the rest of the year
Based on your city's actual daily sunlight over the past 12 months. A single year can vary a little, but the monsoon dip shown here is a consistent seasonal pattern across Uttar Pradesh.
Backup planning
How big a battery would you need?
Pick what you'd want to keep running during a power cut and for how long. This gives you a rough range to start the conversation - not a final spec.
What do you want backed up?
Illustrative only, based on typical appliance wattages and a conservative usage assumption - not a sizing spec.
Why we do a load audit on-site
- Motor-driven appliances (AC, fridge, water pump) draw 3-5x their running watts for a moment on startup - undersizing here is the most common battery-backup mistake, and it needs real inverter-rating knowledge, not a web form.
- How deep a battery can safely be discharged differs by chemistry (lithium vs. tubular) and materially changes usable capacity.
- Charging and discharging a battery both lose some energy, and the loss depends on the inverter-battery pairing.
- Your solar array also needs to be able to recharge that battery day-to-day, not just store it once.
Want an exact battery and backup design for your home?
Request a Site Visit →Instant estimate
What could solar save you?
Enter your average monthly electricity bill for a rough sizing and savings estimate. This is a guide, not a quote - book a free site visit for exact numbers.
Assumes ~4 sun-hours/day generation and current PM Surya Ghar (central) + UPNEDA (UP state) subsidy slabs for residential rooftop. Editable defaults - ask us for a site-specific number.
Fill in your details on the left to see your solar savings estimate here.
Prefer to pay monthly? See the EMI
Once your subsidy is credited
Illustrative only, based on the down payment, tenure and rate above - your actual loan terms depend on the lender. Not a loan offer from Halosun Energy Systems. The loan is sized on the full system cost since the subsidy is typically credited after installation; once it's credited, your outstanding loan and EMI can be reduced as shown above (same tenure and rate).
Want an accurate system design for your roof?
Request a Site Visit →