Electricity planning
Understand bills, appliance usage, and air-conditioner operating cost before changing habits or investing in solar.
Electricity calculators
Focused tools for electricity understanding and solar planning.
Electricity bill calculator
Estimate a Philippine electricity bill from meter readings and charges.
Use calculatorAppliance electricity cost
Calculate daily, monthly, and annual appliance running costs.
Use calculatorAir-conditioner cost calculator
Estimate air-conditioner energy use under practical usage scenarios.
Use calculatorStart with the right question
Understand electricity use before estimating solar
Electricity bills show cost, but system planning also needs kilowatt-hours, appliance runtime, and the share of consumption that happens during daylight. These tools help separate measured facts from assumptions before you consider efficiency changes or solar.
Three numbers make electricity planning more reliable
Record the billing-period kWh, the total amount paid, and the approximate hours when major appliances run. The bill reveals the blended cost of electricity, while appliance runtime explains why consumption rises. Daytime use matters for solar because energy consumed while panels are producing can reduce grid purchases directly. Keep several months of bills so seasonal air-conditioning, holidays, vacancies, or business activity do not distort the conclusion.
Check the billing dates and number of service days before comparing months. A longer billing period can look like higher consumption even when average daily use is unchanged.
Use daily averages when billing periods differ.
What every tool includes
Mobile-first input and result layouts
Visible assumptions and ranges
Formula version and source notes
Saved progress and connected next steps