Local tool
Electricity bill analyzer
Calculate all-in and marginal kWh cost from your own bill.
This tool uses the full EnergiaTo model. Values stay local, and results show the rates and assumptions used.
Local · no account
Your energy profile
Last update: · v
Summary
All rates and parameters come from your data.
Consumption between readings
Latest bill
Meter log
A lower reading is flagged and requires checking meter replacement or correction.
| Date | Meter | Reading | Usage | kWh/day |
|---|
Bill analyzer
The all-in rate contains all charges. The marginal rate excludes fixed charges.
| Period | Dates | kWh | Total | PLN/kWh cał. | PLN/kWh zm. |
|---|
Appliance inventory
Prefer measurement, then manufacturer data, and only then an estimate.
| Appliance | kWh/mies. | Cost/month | Readingdby kWh |
|---|
Tariff comparison
Enter rates from a specific tariff and validity period.
Energy scenarios
These are supporting estimates, not system sizing or an economic guarantee.
Solar
Battery storage
EV charging
Upgrades
Comparison uses your costs, savings, lifetime and discount rate.
| Modernizacja | Inwestycja | Net saving | Payback years | NPV |
|---|
Backup and export
IndexedDB is not a backup. Regularly download a ZIP or encrypted backup.
Date and reports
Readings and bills CSV, JSON, ICS and a printable PDF report.
Full backup
The ZIP contains project data, CSV and a reminder. JSON import opens a project.
Encrypted backup
PBKDF2-HMAC-SHA-256 + AES-256-GCM. The password cannot be recovered.
How to use it
- Enter data from your own bill or appliance.
- Check the unit, period and rate type.
- Compare the result with another scenario.
- Save the project or download a backup.
Limitations
The result is a supporting calculation and does not replace an audit, supplier offer or system design.
Is my data uploaded?
No. The project runs in your browser.
Are rates updated automatically?
No. Enter rates from a specific document and period.