Claude to reconcile Greek electricity bills

GitHub user pmoust used Claude Code to examine the electricity bills for four supplies in Greece: three with Heron and one with DEI. The problem was understanding the cost actually paid, including adjustments and conditions that a headline rate did not explain.

The agent read PDF bills, reconciled the charges by supply, and produced a report and an Excel model for comparing alternatives. The comparison accounted for fixed charges, tariff tiers, commitment conditions and eligibility, rather than simply sorting advertised cents per kilowatt-hour. The repository describes the difference between an attractive advertised energy price and the realized energy cost on the author's bills.

The real bills and generated household outputs are private and excluded from the public repository. Its public demonstration uses synthetic provider data, so those screenshots should not be treated as verification of the author's private amounts. The firsthand README supplies the account of using the toolkit on the four actual supplies.

There is also a recurring update path: a smaller Claude model refreshes tariff data and proposes a pull request for human review. That is separate from automatically choosing or buying a tariff. The source reports bill reconciliation and comparison artifacts, without reporting that the author changed electricity provider.

Prompt
Original prompt

Source: github.com · pmoust