Annual cost
$72,000
حاسبة تكلفة الكهرباء
قدّر فواتير الكهرباء الشهرية والسنوية من الاستهلاك، وتعريفة ثابتة أو حسب وقت الاستخدام وأي رسوم طلب — مع مقارنة سيناريوهات شفافة.
النتيجة
أدخل الحمل → احصل على تصميم كامل وقائمة مواد (BOM) في ثوانٍ
نموذج المخرجاتEstimated 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.
لمديري الطاقة وأصحاب المنشآت والشركات الذين يقدّرون الفواتير أو يقارنون التعريفات أو يحددون كميًا تأثير تكلفة الطاقة لمحوّل أكثر كفاءة.
استخدم الحاسبة
مثال محلول
مثال مرجعي محسوب مسبقًا (قابل للزحف — لا يتطلب JavaScript). أدخل معاملاتك الخاصة أعلاه للحصول على نتيجة مباشرة.
مثال 1 — سعر ثابت 50,000 kWh/شهر
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.
مثال 2 — حسب وقت الاستخدام مع رسوم الطلب
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 | $250 (lower) |
Note
This is a transparent arithmetic estimate of billed cost. Actual savings depend on the utility tariff schedule, demand charges, power factor penalties and eligibility — verify with your bill before acting.
كيف تم الحساب
- · رسوم الطاقة = kWh × السعر (ثابت)، أو kWh الذروة × سعر الذروة + kWh الوادي × سعر الوادي (حسب وقت الاستخدام).
- · رسوم الطلب = الطلب (kW) × سعر الطلب ($/kW/شهر).
- · الإجمالي الشهري = رسوم الطاقة + رسوم الطلب.
- · الإجمالي السنوي = الإجمالي الشهري × 12.
- · السعر الفعلي = إجمالي الفاتورة الشهرية ÷ kWh.
المعايير المرجعية
| Standard | Scope |
|---|---|
| IEC 60364-8-1 | التركيبات الكهربائية منخفضة الجهد — كفاءة الطاقة |
| GB 20052 | الحد الأدنى المسموح به لكفاءة الطاقة لمحوّلات القدرة |
الأسئلة الشائعة
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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