Wiktor Wise
The cost of electricity varies depending on the time of day and season. Typically, electricity is more expensive during ''peak hours', when most people are at home and using electricity. In contrast, 'off-peak' hours, such as late at night or early in the morning, usually have lower electricity rates. Power companies often charge off-peak rates during holidays and weekends. By using electricity during off-peak hours, you can save money on your energy bills.
| Characteristics | Values |
|---|---|
| Time of high electricity cost | Peak hours |
| Time of low electricity cost | Off-peak hours |
| When are peak hours? | Typically when most people get home from work, i.e. the evening. |
| When are off-peak hours? | Late at night or early in the morning, weekends, holidays |
| How to save money on electricity bills? | Shift energy use to off-peak hours, especially for energy-intensive tasks |
| How to identify peak and off-peak hours? | Check with your electricity provider |
| How to shift energy use to off-peak hours? | Use timers on appliances, use a smart thermostat, pre-heat/cool your home during off-peak hours |
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What You'll Learn
Peak hours vary by region and season
The peak hours for electricity costs vary depending on the region and the season. For example, in the Northern Hemisphere, solar panels on west-facing roofs will generate the most energy during peak hours, whereas south-facing roofs will typically generate the highest amount of energy overall.
In the summer months, from June to September, peak hours are generally during weekdays, and off-peak hours are during the night and early morning. For instance, Con Edison's summer super-peak pricing is in effect from June through September on weekdays between 2 pm and 6 pm. During this time, it is best to avoid using large devices and appliances. In contrast, off-peak hours are midnight to 8 am, so running large appliances during these times can help save on electricity bills.
Similarly, in California, business EV rate plans have a peak period designed to reduce usage on the electric grid when demand is highest. There is a partial-peak period in the afternoon, from 2 pm to 4 pm, and in the morning, from 9 pm to 9 am. There is also a super off-peak period when prices are at their lowest.
The exact hours of peak and off-peak periods can vary depending on the utility company and the specific rate plan. Therefore, it is essential to check with your electric utility provider about their peak and off-peak hours to make informed decisions about your energy usage.
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Off-peak hours are cheaper
The cost of electricity varies throughout the day, with peak hours, when electricity is most expensive, and off-peak hours, when it is cheaper. Off-peak hours are typically during the night and early morning, as well as on weekends and holidays, when fewer people are using electricity.
During off-peak hours, electricity prices are lower, and you won't have to pay a premium for each kilowatt-hour (kWh) that you use. This is because, during these hours, there is less overall demand for electricity, so power companies can offer lower rates. By using most of your appliances during off-peak hours, you can take advantage of these lower rates and save money on your electricity bill.
Time-of-use (TOU) plans offered by utility companies are a great way to benefit from off-peak rates. With TOU plans, you pay different rates depending on the time of day and season. For example, during the summer months, you can shift your energy use to off-peak hours, typically midnight to 8 a.m., and avoid using large devices during peak hours, which are usually in the afternoon and early evening.
Additionally, some utility companies offer incentives for customers with heat pump water heaters, providing an additional baseline allocation to offset the charges for electricity usage. By enrolling in a TOU plan and taking advantage of off-peak hours, you can make significant savings on your electricity bill.
However, it's important to note that TOU plans may not be suitable for everyone. Before switching to a TOU plan, it's recommended to ask your utility company about their specific off-peak and on-peak hours, as these can vary. Additionally, consider your usage patterns and whether you can adjust your habits to align with off-peak hours. By doing so, you can make an informed decision and maximize your savings.
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Time-of-use rates
For example, as of 2023, Pacific Gas & Electric (PG&E) offers two residential time-of-use plans with different rates and peak hours. The on-peak period for the E-TOU-C plan is 4:00–9:00 PM every day, while the E-TOU-D plan offers a shorter on-peak window from 5:00–8:00 PM on weekdays.
In some cases, time-of-use rate plans can cost you more in the long term, so it's important to understand your usage patterns and the specific rates offered by your electricity provider before opting into a time-of-use plan. Additionally, keep in mind that there may be a requirement to stay on the plan for a certain period, such as 12 consecutive months, and if you switch to a different rate plan, you may not be able to re-enroll in the time-of-use rate for a set period, such as 18 months.
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Solar panels can reduce costs
The cost of electricity varies depending on the time of day, season, and whether it is a weekday, weekend, or holiday. Typically, electricity is more expensive during the day, especially during the standard working hours of 9 am to 5 pm, and cheaper at night. The exact hours and the premium paid during peak hours depend on the utility company and the specific rate plan.
Solar panels can reduce electricity costs by thousands of dollars over 30 years. This is because you are generating your own power instead of buying it from an electric utility company. The amount saved depends on where you live and how you finance the system. If you pay for solar panels in cash, it is cheaper than financing the purchase. The average cost of a home solar panel system is about $30,000, but tax credits and incentives can reduce the net cost to about $21,000. The federal solar tax credit, also known as the residential clean energy credit, can provide a credit of up to 30% of the cost of your solar power system. Local incentives can further lower the cost.
When you generate your own energy with a solar panel system, you lock in your energy costs at a consistent rate, which means you no longer have to worry about annual rate increases from your utility. The power generated by solar panels can replace some or all of the power bought from the electricity provider. The cost per kWh for electricity from solar panels is often lower than that offered by electric utilities.
Additionally, you can take advantage of net metering, where you receive credits for sending excess solar electricity back to the grid. These credits can be used to offset your electricity bill. However, the rate of credits depends on the time of day, with peak hours providing higher credits.
To maximize savings, it is important to be energy efficient, such as upgrading to Energy Star appliances and adjusting HVAC and water heater settings. Shifting electricity use to daylight hours when solar panels are generating electricity can also increase savings.
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Using less hot water
The cost of electricity varies depending on the time of day and season, with peak hours attracting a higher premium. Typically, electricity is cheaper late at night or early in the morning, and power companies often charge off-peak rates during holidays and weekends.
Hot water systems account for about 18% of a home's utility bill, so using less hot water can significantly reduce energy costs. Here are some ways to do this:
- Fix leaks and install low-flow fixtures such as showerheads and faucets. Low-flow showerheads can cost as little as $10-$20 and achieve water savings of 25%-60%.
- Purchase energy-efficient appliances such as an ENERGY STAR-certified dishwasher and clothes washer. Inefficient clothes washers, for example, can cost three times as much to operate as energy-efficient ones.
- Adjust the thermostat on your hot water tank. Be sure not to set the temperature any higher than 120ºF (49ºC) to prevent scalding and serious burns.
- Consider a point-of-use tankless heater if you need hot water faster. These small units are far less expensive than whole-house models and are designed to serve a single sink or shower.
- Upgrade your plumbing and heating systems to speed up the delivery of hot water. For example, structured plumbing involves situating the water heater at the centre of the house, reducing the wait time for hot water.
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Frequently asked questions
Peak hours are the times of day when electricity is most in demand and, therefore, more expensive. Typically, this is when people are getting home from work, turning on lights, and using appliances.
Off-peak hours are when electricity prices are cheaper, usually late at night or early in the morning. During these times, fewer people are using electricity, so there is less demand.
Peak and off-peak hours vary depending on the region and the provider. You should check with your electricity provider to find out the exact times.
You can save money by using major appliances during off-peak hours. For example, running your dishwasher or washing machine during off-peak hours can reduce your electricity costs.
