Charging your electric car at home in February: how to optimise off-peak hours

Charging your electric car at home is usually the most convenient and affordable option for most users. However, not every month behaves the same in terms of consumption and efficiency, and February is a perfect example. 

Why February is a key month for charging your electric car

In February, household energy consumption typically rises: heating, appliances, and hot water use all increase electricity demand, making the choice about when to charge your car all the more noticeable on your bill.

The cold weather also affects the vehicle itself. Batteries lose efficiency at low temperatures and require more energy to operate normally, especially if the car spends long periods outside or you frequently take short trips. On top of this, preconditioning (heating the cabin and battery before driving) adds extra consumption that is worth factoring in.

In this context, choosing the right time to charge becomes even more important. Off-peak hours, when electricity is cheapest, are the best option to offset both higher household consumption and reduced battery performance during colder months.

What are off-peak hours and why are they the cheapest?

Definition of tariff periods

Time-of-use tariffs divide the day into three periods (peak, shoulder, and off-peak), each with a different price per kWh. The off-peak period is always the most affordable, which makes it especially useful for anyone who can shift some of their energy consumption. This system helps you better organise your energy consumption and take advantage of times when demand is lower to reduce your bill.

Why electricity providers offer lower prices

Off-peak hours line up with times when the electricity grid is less loaded. These are usually nighttime hours, when activity in homes and industries drops significantly. With lower demand, the cost of generating and distributing electricity decreases as well, and that saving is passed on to consumers in the form of cheaper electricity prices.

Difference between off-peak, shoulder, and peak hours ·      

• Peak hours are the most expensive and match the periods of highest activity during the day.
•  Shoulder hours have a mid-range price and typically cover morning and afternoon slots.
•  Off-peak hours, on the other hand, are the cheapest and usually occur during the early hours of the morning.

For an electric car, this last period is the most attractive because it allows you to charge the battery at the lowest possible cost.

What's the best time to charge your electric car in February

Typical off-peak slots

In most time-of-use tariffs, the off-peak period usually runs from midnight to 8:00 a.m. This is when electricity prices are at their lowest, and although the exact hours may vary depending on the tariff, they generally remain stable throughout the year. For those charging their electric car at home, this is the most interesting slot to take advantage of much cheaper kWh rates.

How to choose the most efficient slot

The best time to charge in February is the one that aligns three key factors: the lowest kWh price, a time of day when household electricity consumption is low, and a schedule that fits your routine.

If your car stays at home overnight, the most practical approach is to schedule your charging session so it completes entirely within the off-peak period. This way, you benefit from lower rates and avoid overlapping with household appliances that could push up the power demand.

How to coordinate with household habits

If your home uses electric heaters, water heaters, or other high-consumption appliances at night, it’s important to avoid running them at the same time as the car’s charging. You can adjust your contracted power or shift those uses to another time to avoid exceeding available capacity and keep the charging within the cheapest slot. This way, you make the most of off-peak hours without any surprises on your bill.

How to schedule charging to take advantage of cheap hours

Scheduling from the car

Most electric cars allow you to set the start and end time for charging directly from the vehicle. This is a convenient and reliable way to ensure the car charges exactly when you want, especially if you tend to charge at the same time.

Scheduling from the charger (wallbox)

Home wallbox chargers usually offer very complete scheduling options. They allow you to adjust the power, select the time slots when you want the car to charge, and automatically prioritise the lowest-cost periods. This is especially useful if you have a time-of-use tariff and want to make sure the entire charging session takes place during off-peak hours.

On chargers like Endesa’s Waybox, these features are designed to make managing your charging simple and tailored to your daily routine without having to watch the clock every night.

Scheduling from the supplier’s app

Some energy suppliers offer apps that allow you to monitor your consumption in real time and schedule charging based on hourly prices. If you have an indexed tariff, where the price changes daily, this option is especially useful, as it helps you always pick the cheapest moment to charge without having to track price fluctuations yourself.

Tips to avoid exceeding your contracted power

•  Avoid using the oven, cooktop, or washing machine while the car is charging.
•  Adjust the wallbox power if it allows regulation.
• Make sure your contracted power matches your actual needs, especially in winter when household consumption tends to increase.

How cold affects the battery and how to offset it

Lower battery efficiency

Lithium-ion batteries perform less efficiently in cold weather, which results in a slight reduction in range. This is normal: they need more energy to operate and maintain optimal temperature, so the car consumes slightly more in winter.

Higher consumption on short trips

In winter, short trips are less efficient because the battery doesn’t have time to reach its optimal temperature. Until it does, the car requires more energy to move, which is reflected in higher consumption.

Preconditioning the vehicle

Warming up the cabin and battery before driving helps improve efficiency and reduces energy use during the trip. Ideally, you should do this while the car is still plugged in, so that the energy comes from the grid rather than the battery.

Charging during off-peak hours to offset extra costs in winter

Taking advantage of off-peak hours is an easy way to offset the car’s higher consumption in winter without increasing your bill. Electricity is more affordable, and the difference is especially noticeable in cold months like February.

How much you can save by charging during off-peak hours

 Choosing a tariff optimised for electric cars

Time-of-use tariffs or plans designed specifically for electric vehicles can significantly reduce the cost per kWh at night. Depending on how you use your car, your monthly savings can be substantial, and in winter, when consumption increases, the benefit becomes even more evident.

Extra tips for cheaper home charging

 Adjust your contracted power if needed

Sometimes one contracts more power than one actually needs… or sometimes not enough. Reviewing it can help you pay less each month and avoid surprises when you plug in the car. A small adjustment can make a big difference on your bill.

Avoid using heaters, ovens, or washing machines during charging

When several high-power appliances run at the same time, consumption spikes. If you can avoid using the oven, cooktop, or washing machine while the car is charging, you’ll reduce power peaks and prevent the breaker from tripping. Additionally, the charging session will be more stable.

Check the condition of your wallbox

A charger in good condition is not only safer, but also more efficient. It’s worth checking occasionally: cables, connections, ventilation… Everything helps ensure fast and trouble-free charging.

 Precondition the car before starting it while it still plugged in

Warming up the cabin and battery before setting off, while the car is still connected, is an easy way to save energy during the trip. The battery performs better, consumption decreases, and you start your journey with a warm, ready-to-go car.