03 · Your comparison
Positive savings mean B costs less than A. A negative value means B costs more.
B is cheaper only in the first year. Its recurring annual cost is higher.
| € / per year | A | B |
|---|
This card shows annual costs and your input label. Review it before sharing. It excludes consumption, rates and files.
Saved comparisons
Use the template headers. One row per measured period; the tool sums kWh and never extrapolates to a year. Enter or import a full year. Semicolon files accept decimal commas.
How the calculation works
Annual recurring cost = Σ(consumption × all-inclusive rate) + fixed charges + contracted power charges. First-year cost subtracts the one-off bonus; B also adds switching costs. Two-year savings = first-year savings + recurring savings. France’s break-even uses recurring costs, excluding bonuses. The shifting scenario stays separate.
Limits of this comparison
A 365-day model with constant consumption and prices. It does not forecast index-linked prices, model real hourly schedules, solar export, social tariffs or contract eligibility. Verify bonus conditions, term and exit fees with the supplier. A negative bill can result from an unusually large entered bonus. This is arithmetic, not a switch recommendation.
Privacy
Figures stay in your browser unless you export or deliberately share them. Saved comparisons use local storage; up to five entries. A share URL contains the numbers in its fragment. Anonymous interaction counts include language, market and example/own-input choice, never bill values. No account is needed. Next-step counts include the selected category, never your inputs or calculated savings. Video campaign links also count the campaign, channel and coarse referrer category. No visitor identifier is stored.
Sources and official comparison services
- DE · Verbraucherzentrale
- FR · Médiateur national de l’énergie
- FR · Heures creuses
- ES · CNMC
- IT · ARERA / Portale Offerte
2026-09-25 · EcoBack