Annual cost
$72,000
Calculateur de coût d'électricité
Estimez les factures d'électricité mensuelles et annuelles à partir de la consommation, d'un tarif fixe ou heures creuses/pleines et de tout frais de puissance — avec une comparaison transparente des scénarios.
Résultat
Saisissez votre charge → obtenez une conception complète & une nomenclature en quelques secondes
Exemple de résultatEstimated monthly electricity cost
$6,000
50,000 kWh/month · Flat rate @ $0.12/kWh
Effective $/kWh
$0.1200
Energy charge
$6,000
Demand charge
$0
Cost breakdown
| Energy charge | Flat rate @ $0.12/kWh = $6,000 |
| Demand charge | 0 kW × $0/kW = $0 |
| Monthly total | $6,000 |
| Annual total | $6,000 × 12 = $72,000 |
Scenario comparison
| Flat-rate energy cost | $6,000 |
| If 30% shifted to valley @ $0.08 | $5,400 |
| Arithmetic difference | $600 (depends on actual tariff eligibility) |
Note
This is a transparent arithmetic estimate of billed cost. Actual savings depend on the utility tariff schedule, demand charges, power factor penalties and eligibility — verify with your bill before acting.
Pour les gestionnaires d'énergie, les propriétaires d'installations et les entreprises estimant les factures, comparant les tarifs ou quantifiant l'impact sur le coût énergétique d'un transformateur plus efficace.
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Exemple concret
Un exemple de référence pré-calculé (indexable — aucun JavaScript requis). Saisissez vos propres paramètres ci-dessus pour un résultat en direct.
Exemple 1 — tarif fixe 50 000 kWh/mois
Estimated monthly electricity cost
$6,000
50,000 kWh/month · Flat rate @ $0.12/kWh
Annual cost
$72,000
Effective $/kWh
$0.1200
Energy charge
$6,000
Demand charge
$0
Cost breakdown
| Energy charge | Flat rate @ $0.12/kWh = $6,000 |
| Demand charge | 0 kW × $0/kW = $0 |
| Monthly total | $6,000 |
| Annual total | $6,000 × 12 = $72,000 |
Scenario comparison
| Flat-rate energy cost | $6,000 |
| If 30% shifted to valley @ $0.08 | $5,400 |
| Arithmetic difference | $600 (depends on actual tariff eligibility) |
Note
This is a transparent arithmetic estimate of billed cost. Actual savings depend on the utility tariff schedule, demand charges, power factor penalties and eligibility — verify with your bill before acting.
Exemple 2 — heures pleines/creuses avec frais de puissance
Estimated monthly electricity cost
$7,350
50,000 kWh/month · Time-of-use: 50% peak @ $0.15 + 50% valley @ $0.08 · demand $1,600
Annual cost
$88,200
Effective $/kWh
$0.1470
Energy charge
$5,750
Demand charge
$1,600
Cost breakdown
| Energy charge | Time-of-use: 50% peak @ $0.15 + 50% valley @ $0.08 = $5,750 |
| Demand charge | 200 kW × $8/kW = $1,600 |
| Monthly total | $7,350 |
| Annual total | $7,350 × 12 = $88,200 |
Scenario comparison
| Flat-rate energy cost (same kWh) | $6,000 |
| Time-of-use energy cost | $5,750 |
| TOU saving vs flat | $250 (lower) |
Note
This is a transparent arithmetic estimate of billed cost. Actual savings depend on the utility tariff schedule, demand charges, power factor penalties and eligibility — verify with your bill before acting.
Comment il a été calculé
- · Frais d'énergie = kWh × tarif (fixe), ou kWh pointe × tarif pointe + kWh creux × tarif creux (heures pleines/creuses).
- · Frais de puissance = puissance (kW) × tarif de puissance ($/kW/mois).
- · Total mensuel = frais d'énergie + frais de puissance.
- · Total annuel = total mensuel × 12.
- · Tarif effectif = facture mensuelle totale ÷ kWh.
Normes référencées
| Standard | Scope |
|---|---|
| IEC 60364-8-1 | Installations électriques basse tension — efficacité énergétique |
| GB 20052 | Valeurs minimales admissibles d'efficacité énergétique pour les transformateurs de puissance |
Questions fréquentes
How do I calculate my monthly electricity bill from kWh?
Bill = energy charge (kWh x tariff) + demand charge (peak kW x rate) + fixed charges. At $0.12/kWh, 10,000 kWh costs $1,200 in energy, plus a demand charge of $5-15/kW for the peak. The calculator handles flat and time-of-use tariffs and demand charges.
What is a demand charge and how does it affect my bill?
A demand charge bills the highest 15-30 minute average power (kW) drawn during the billing period, rewarding a flat load profile. A single 200 kW peak can add $1,000-3,000/month at $5-15/kW. Load shifting and storage reduce it. The calculator includes demand charges in the monthly and annual estimate.
What is time-of-use (TOU) pricing?
Time-of-use pricing charges different rates by time of day — higher during peak hours (e.g. 4-9 pm) and lower off-peak. Peak rates are often 2-3x off-peak. Shifting flexible load to off-peak cuts the bill 10-30%. The calculator applies peak/off-peak rates to your usage split.
How much does a 100 kW load cost per month?
A continuous 100 kW load uses 72,000 kWh/month. At $0.12/kWh that is $8,640 in energy, plus a demand charge (100 kW x $5-15 = $500-1,500), totaling roughly $9,100-10,100/month. The calculator computes this from your load, tariff and demand rate.
How can I reduce my electricity bill?
Three levers: cut consumption (efficiency, power-factor correction), shift load off-peak (time-of-use), and shave the demand peak (storage, load scheduling). Power-factor correction alone can remove a penalty of 0.5-3% of the bill. The calculator's cost model shows where each lever saves.
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