Average Billing

How Does Average Billing Work?

Most of the US has fluctuating electricity bills. In the north, people use more power to heat their homes in the winter. The opposite is true in the south, as residents spend the most on cooling their homes during the hot summer days.

No matter where you live, there will always be fluctuations in the amount of power you use and pay for each month. This also means having months where the electric bill can be as much as twice the normal amount in extreme weather.

Electricity providers have created a system that claims to solve this problem: average billing. Also known as budget billing, average monthly billing, or balanced billing, average billing aims to smooth out the bumps in your monthly electric bill.  Ideally, this should result in a predictable electricity bill each month. 

How Average Billing Works

The goal of average monthly billing is to have 12 bills each year that are as close to identical as possible. By using average billing, you should be able to have a predictable electric bill similar to your other monthly expenditures like rent, mortgage, or car insurance. Average billing is not intended to actually save you money in the long run.

Electricity companies use a formula for determining the amount you pay each month by adding the past 12 months historical kWh usage and dividing that sum by 12 to get an average monthly electricity usage. The average prior 12 months kWh usage is multiplied by your current electricity rate to determine your average bill. If you haven’t lived in your house for the entire prior 12 months, most companies will use the historic meter data from the property combined with your current electricity rate to calculate an average bill.

Average Monthly Billing Example:

Average Billing example

As you can see in the above example, in average monthly billing you’ll pay more for the electricity you use in some months while paying less for it in others. In this example (a typical usage pattern for residents in the southern US), customers with average billing would pay more in the winter and less in the summer compared to someone who pays for actual usage monthly.

Average Bill Calculation

This is where it gets a bit more complicated. Once the initial average bill is determined it is then evaluated each month. Your average bill will be adjusted based on the previous 12 months energy usage on a rolling basis plus or minus an adjustment for a portion (usually 1/12) of the “deferred balance”, “accumulated variance”, or “average billing plan balance”. These balance/variance accounts are the difference between the calculated average bill and what your bill would have been without average billing. For the purpose of this article, we refer to it as a deferred balance but every provider calls it something different.

Adjusting your bill every month for a portion of the deferred balance should, in theory, keep you from grossly over-paying or under-paying throughout the year. That way you’re not left with a huge deferred credit balance (the provider owes you money), or a deferred debit balance (you owe the provider money) at the end of a 12 month cycle.

Average billing can be a useful plan in some circumstances, but it’s far from perfect. Let’s break it down:

Average Billing Benefits

If you have lived in your home for several years and have consistent energy usage year over year, average billing could work well for you especially if you live on a fixed income. The key is consistent energy usage year over year. Average billing helps smooth out seasonal fluctuations in your energy bill and keeps it predictable.

Average Billing Pitfalls

The deferred balance is basically the slush fund for all over-payments and under-payments as compared to your average bill. In a perfect world, the deferred balance should be close to zero at the end of a 12 month cycle. But, because the average bill is calculated based on past energy usage, any variance in current energy usage will leave you with a deferred balance that doesn’t clear out at the end of a 12 month cycle.

Weather extremes impact your energy usage and could seriously impact the deferred balance with your provider. Also, if you haven’t lived in your house for the last 12 months, then the calculated average energy usage is based on someone else’s habits and not your own.

Additionally, having close to the same bill each month can make you more lax when it comes to energy conservation. It can be easier to leave lights on and not monitor your thermostat as closely if it won’t hit your pocketbook at the end of the month. However, any changes in energy usage habits end up in a deferred account balance at the end of the month so at some point you’ll have to pay for it.

What Happens with a Deferred Account Balance?

Deferred ‘Debit’ Balance

If during the course of a year on average billing, you have consistently used more energy than you have paid for on average billing, then you will have a deferred debit balance and you will owe that balance to your provider. It’s similar to under-paying your income taxes.  You will have to eventually pay.  Most providers will monitor this balance and increase your average bill if you are accumulating a large deferred debit balance because providers don’t like for customers to underpay.

Deferred ‘Credit’ Balance

On the other hand, and what is more often the case, if you have consistently paid more on average billing that what you have actually used over the course of a year, then you will have a deferred credit balance and the provider owes you money. However, providers are not as likely to monitor this balance as closely and decrease your average bill. A deferred credit balance is similar to over-paying your income taxes.  You’ve essentially given your electricity provider a loan and you’re not getting interest on it.

If you choose to discontinue average billing because you have accumulated a large credit with your provider, you get two options. If you are still in a contract or choose to continue with your current provider, your credit balance can be used to offset future electricity bills or you may request payment of the balance. If you are at the end of the contract term and choose to switch providers, then the provider is required to pay you the balance. The timeliness of the payment depends on the provider.

Is Average Billing Right For You?

While average billing may sound like a great solution for managing a budget, it does require monitoring. Understanding your electricity provider’s calculation for your average bill and keeping a close eye on any deferred balance will keep you from any nasty surprises on your future electric bills.

If you are on a fixed income and need consistent billing amounts, average billing may be worth considering, especially if you have been in your residence for a few years and have stable usage. However, be sure to monitor the deferred balance on your monthly bill to verify that it doesn’t just continue to grow unchecked.

If your energy pattern changes considerably throughout the year or if you are planning a home improvement such as a new pool, know that you might not be paying enough with average billing. This underpayment could lead to a hefty true-up payment to your electricity provider.