Electricity pricing in California has changed in recent years, and many homeowners now pay under something called time-of-use (TOU) rates. Instead of paying the same price for electricity all day, TOU plans charge different prices depending on when electricity is used.

For many households, this shift can feel confusing at first. However, once you understand how TOU pricing works, it often becomes easier to reduce electricity costs without dramatically changing your lifestyle.

What are time-of-use rates?

Time-of-use pricing means that electricity costs vary depending on the time of day.

Utilities use this system to encourage electricity use when demand on the grid is lower and to reduce usage during periods when the grid is most stressed.

Most TOU plans divide the day into three general periods:

Off-peak hours

Electricity is cheapest during off-peak hours, often overnight or early in the morning when overall demand is low.

Mid-peak hours

These are moderate-price periods when demand begins to increase but has not yet reached its highest levels.

Peak hours

Peak periods usually occur in the late afternoon and evening, when many people return home and begin using appliances, lighting, air conditioning, and electronics.

Because electricity demand is highest during these hours, prices are typically significantly higher.

Why peak hours matter so much

The power grid must always match electricity supply with demand. When millions of homes start using electricity at the same time, utilities must bring additional power sources online to meet that demand.

These additional resources can be more expensive to operate. As a result, electricity used during peak periods is priced higher to reflect the cost of supplying that energy.

For homeowners, this means that when you use electricity can matter almost as much as how much you use.

The good news: many changes are easy

The biggest misconception about time-of-use pricing is that it requires major lifestyle changes. In reality, many of the largest electricity uses in a home can be shifted automatically or scheduled for different times of day.

Small adjustments can reduce electricity costs without affecting daily routines.

Appliances that are easy to shift

Many common appliances include timers or delay-start features that allow them to run later in the evening or early in the morning.

Examples include:

• Dishwashers

• Laundry machines

• Clothes dryers

• Pool pumps

• Electric vehicle chargers

By running these appliances outside of peak hours, households can often lower their electricity costs without using less energy overall.

Heating and cooling strategies

Heating and cooling systems are among the largest sources of electricity usage in many homes.

One common strategy is pre-cooling or pre-heating a home before peak hours begin. For example, cooling the home slightly earlier in the day can allow the air conditioning system to run less during the most expensive hours.

Smart thermostats can automate this process by adjusting temperatures throughout the day.

Charging electric vehicles at the right time

Electric vehicles can be one of the largest electricity loads in a home. However, most EVs and home charging systems allow charging schedules to be programmed.

Charging overnight or during lower-cost periods can significantly reduce the cost of driving an electric vehicle.

How solar and batteries interact with TOU

Time-of-use pricing also changes how solar systems and batteries create value.

Solar panels typically produce the most electricity during midday hours. Depending on the pricing structure, that energy may be used directly in the home or exported to the grid.

Home batteries allow electricity produced earlier in the day to be stored and used later during higher-price periods. This can reduce the need to purchase electricity from the grid during peak hours.

Understanding your household energy patterns

One of the most useful steps homeowners can take is to review when electricity is used throughout the day.

Many utilities provide tools that show hourly energy usage. These reports can reveal patterns such as:

• Large evening electricity spikes

• High daytime cooling usage

• Overnight charging patterns

Understanding these patterns can help homeowners decide which adjustments will have the greatest impact on their electricity costs.

The bottom line

Time-of-use electricity pricing is designed to encourage more balanced energy use throughout the day. While the system can initially seem complicated, it often rewards households that shift certain activities to lower-cost periods.

By scheduling appliances, adjusting heating and cooling patterns, and paying attention to peak hours, many homeowners can reduce their electricity bills without sacrificing comfort or convenience.