⚡ EV Overnight Charging Savings TCO Workbench

Source Presets:
EV Cost / Mile
£0.024
at 8.57p/kWh overnight
ICE Cost / Mile
£0.183
at £1.61/L (40.0 MPG)
Per-Mile Fuel Delta
£0.159
saved every single mile
Annual Fuel Savings
£1,590.00
at 10,000 miles/yr
Net Annual Operating Savings
£1,720.00
incl. maintenance & insurance
Switch Payback Period
14.3 mo
1.2 years to break-even

⚙️ Vehicle & Tariff Engine

Adjust real driving mileage, energy tariffs, and vehicle economics

10,000 miles
🕒 24-Hour TOU Charging Window 00:00 - 05:00 (5 hrs off-peak)

Click & drag to test day vs night charging. Charging at daytime peak rates (e.g. 28p/kWh) significantly degrades savings.

00:00 (Midnight) 06:00 12:00 (Noon) 18:00 23:00
Off-Peak Night Rate
Peak Day Rate
Scheduled EV Charge Window

📊 Break-Even Trajectory & Cost Flow

Cumulative net cash flow from Year 0 upfront investment through Year 10

🔋 EV Overnight Electricity £0.024 / mi
⛽ ICE Petrol/Gasoline £0.183 / mi
✅ Decision Insight
With upfront switch costs of £2,050.00 (£1,200 purchase premium + £850 charger install), your annual net operational savings of £1,720.00 will fully break even in 14.3 months (1.2 years). Over 5 years, your net cash surplus will reach £6,550.00.

📑 10-Year Cumulative Cash Flow Ledger

Accounting for fuel delta, scheduled maintenance savings, and insurance surcharges

Year Mileage ICE Fuel Cost EV Power Cost Fuel Savings Net Op. Delta Cumulative Net Cash Flow Milestone
EV Cost / Mile 0.024
ICE Cost / Mile 0.183
Per-Mile Fuel Savings 0.159
Annual Energy Savings 1590.0
Upfront Switch Cost 2050.0
Annual Net Operating Savings 1720.0
Payback Period (Months) 14.3
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