What Is Costing You Money at Home, and What Should You Change?
Simulate your household's real power, water, cooling, and living costs using authentic Indian state DISCOM tariff slabs. Discover high-ROI upgrades that pay for themselves.
Digital Twin Configuration
Monthly Cost Share by Category₹3,035/mo
Total 640 units @ effective ₹4.74/unit
Top 5 Monthly Power Consumers
Highest Savings PotentialThese 5 appliances drive the vast majority of your electricity bill.
“What If?” Home Cost Reduction Simulator
Slide the controls below to see instant live savings before spending a single rupee.
E.g. turn off AC 1-2 hours early in the morning using a sleep timer.
Setting AC to 24°C or 25°C instead of 20°C saves ~6% electricity per °C.
Replaces standard 75W ceiling fans with 28W BLDC motors (saves 63%).
Generates ~125 units/month per kW with PM Surya Ghar subsidy.
Upgrade >8-yr fridge to 5-Star Smart Inverter
Replace 2000W electric geyser with solar thermal
Prioritized Home Upgrades & Savings Roadmap
Ranked by return-on-investment (ROI) and payback velocity.
Switch 4 Conventional Fan(s) to 28W Smart BLDC Motors
Your 4 standard 75W ceiling fan(s) consume ~126 units/mo. Modern BLDC fans cut consumption by 63% with zero hum and run 3x longer on home inverter.
Set AC Thermostat to 24°C or 25°C with Ceiling Fan on Low
BEE studies prove that every 1°C increase in AC temperature reduces power by ~6%. Running AC at 24°C instead of 20°C with a gentle fan provides identical thermal comfort while slashing AC load by ~18%–24%.
Replace >8-Year-Old Refrigerator with 5-Star Smart Inverter Model
Older non-inverter compressors suffer mechanical wear and degraded door gaskets, running almost continuously. A new 5-Star Smart Inverter fridge uses brushless DC technology and saves ~30 units every single month.
Install 3 kW Rooftop Solar under PM Surya Ghar Muft Bijli Yojana
Your monthly usage of 640 units puts you into higher billing slabs. Under the PM Surya Ghar scheme, the Central Government provides ₹78,000 direct DBT subsidy. Your net investment is ₹1,17,000 with break-even in ~5.5 years!
Switch High-Wattage Electric Geyser to Rooftop Solar Water Heater
Electric geysers are 2000W–3000W monsters that rapidly spike peak morning demand. A 150 LPD ETC solar water heater delivers piping hot water for 300+ days a year using zero grid electricity.
Appliance Inventory (10 Items)
Customize quantity, wattage, and runtime hours to match your exact home setup.
Specialized Household Cost Intelligence Tools
Deep-dive into specific appliances, utilities, and financial decisions.
⚡ Electricity & Energy
Room-by-room appliance bill calculator, state tariff slabs, and 5-star upgrade payback.
❄️ Inverter AC & Cooling
3-Star vs 5-Star break-even analysis, room tonnage sizer, and thermostat physics.
☀️ Solar & Backup Power
PM Surya Ghar ₹78,000 subsidy calculator, roof sizing, and Inverter/Battery Ah capacity.
💧 Water & Geyser
IS 1172 water tank capacity sizer & 3-way geyser battle: Electric vs Gas vs Solar.
🏡 Renovation & Construction
Wall painting litres & labor, floor tile box estimator, and cement/sand/steel sizing.
💰 Living Cost & Rent vs Buy
14.2 kg LPG cylinder vs Induction cooktop & Indian 10-year Rent vs Buy financial model.
Frequently Asked Questions
Q:How does the Home Digital Twin calculate my electricity bill accurately?
Unlike generic online tools that apply a flat rate, our engine models the exact telescopic slab structures of major Indian state DISCOMs (including TANGEDCO in Tamil Nadu, MSEDCL in Maharashtra, BSES in Delhi, and BESCOM in Karnataka). It accounts for subsidized free tiers, progressive slab jumps, and sanctioned load fixed charges.
Q:Why does setting AC temperature from 20°C to 24°C save so much money?
Bureau of Energy Efficiency (BEE) and ASHRAE thermodynamic research shows that every 1°C increase in AC set temperature reduces compressor load by approximately 6%. Increasing the thermostat from 20°C to 24°C reduces electricity consumption by ~24%, saving an average Indian household ₹3,200 to ₹5,400 across summer months with zero lifestyle compromise.
Q:Is switching conventional ceiling fans to BLDC motors worth the investment?
Yes! A standard induction ceiling fan consumes 75W, while a modern BLDC motor fan consumes just 28W (a 63% reduction). At 14 hours of daily use, one BLDC fan saves ~240 units per year (~₹1,800/yr). Since BLDC fans cost around ₹2,800, full investment payback is achieved in under 18 months.
Q:How much subsidy does PM Surya Ghar Muft Bijli Yojana provide for rooftop solar?
Under the PM Surya Ghar scheme, the Central Government provides direct bank account (DBT) subsidies: ₹30,000 for 1 kW, ₹60,000 for 2 kW, and a maximum cap of ₹78,000 for 3 kW and above. For a typical 3 kW system costing ~₹1.95 Lakhs, net cost is reduced to ~₹1.17 Lakhs with full break-even payback in ~3.2 years.
Ostrune — Web Development, SEO & Speed Growth Agency
We build sub-second websites, custom web apps, and run SEO & Meta Ads with 100/100 Core Web Vitals for ambitious businesses worldwide. Free site audit with 12h reply guarantee.