Energy Action helps Australian businesses understand their energy consumption, procurement requirements and electricity cost-management opportunities. With the right analysis and energy strategy, businesses can make more informed tariff and contracting decisions.
Estimated Reading Time: 10 minutes
Choosing the right business electricity tariff types can significantly affect how much an Australian business pays for electricity. Two businesses may consume the same amount of electricity but receive very different bills because they use power at different times or create different levels of peak demand.
A tariff determines how electricity charges are calculated. Depending on the structure, your business might pay the same usage rate throughout the day, different rates during peak and off-peak periods, or an additional charge based on maximum electricity demand.
Therefore, choosing a tariff involves more than comparing cents per kilowatt hour. Businesses should consider operating hours, consumption patterns, peak demand, meter configuration and their ability to shift electricity use.
This guide explains the main business electricity tariff types and how to identify a structure that suits your organisation.
Business electricity tariff types are pricing structures that determine how a business pays for electricity. Electricity bills commonly include a daily supply charge plus charges for electricity consumption.
However, the way consumption is priced varies considerably. Some tariffs use one rate, while others change prices according to the time electricity is consumed. Demand tariffs may also charge according to the highest level of electricity demand during specified periods.
The key question is therefore not simply which tariff advertises the lowest rate. Instead, businesses should determine which structure produces the best overall cost for their actual consumption profile.
Australian businesses may encounter several tariff structures. Availability depends on factors including location, electricity distributor, retailer and meter configuration.
| Tariff type | How it works | Potentially suitable for |
| Single or flat rate | Same usage rate regardless of time | Businesses with consistent consumption |
| Time-of-use | Different peak, shoulder and off-peak rates | Businesses able to shift consumption |
| Demand | Includes charges linked to maximum demand | Businesses capable of managing load peaks |
| Controlled load | Separate pricing for eligible equipment | Businesses with suitable controlled loads |
| Block tariff | Rates change across consumption bands | Businesses on plans using usage blocks |
Understanding these differences helps businesses compare tariffs according to operating requirements rather than focusing only on headline electricity prices.
A single rate tariff, sometimes called a flat or anytime tariff, generally applies the same usage rate regardless of when electricity is consumed.
Its major advantage is simplicity. Businesses do not need to organise their operations around peak and off-peak pricing periods.
This approach may suit organisations that operate primarily during fixed hours and have little flexibility over when electricity is required. Restaurants, retailers and offices, for example, may need lighting, cooling and equipment throughout normal trading hours.
However, simplicity does not necessarily produce the lowest cost. Businesses that can shift substantial electricity consumption may find other tariff structures more economical.
A single rate tariff may be worth considering when a business has relatively consistent consumption, limited flexibility to move energy-intensive activities or a preference for straightforward electricity pricing.
Nevertheless, businesses should compare total expected costs before choosing a tariff.
Time-of-use tariffs charge different electricity rates depending on when electricity is consumed.
They generally divide electricity use into periods such as peak, shoulder and off-peak.
| Period | General pricing level | Business consideration |
| Peak | Higher | Reduce discretionary consumption where practical |
| Shoulder | Moderate | Alternative period for flexible activities |
| Off-peak | Lower | Shift suitable loads into these periods |
Exact periods and prices vary between electricity plans.
Time-of-use tariffs can potentially benefit businesses that can move energy-intensive activities into lower-cost periods. For example, equipment charging, pumping or some production processes might be scheduled outside peak periods.
However, lower off-peak rates do not automatically mean a lower electricity bill. If most electricity consumption occurs during expensive peak periods, the tariff could increase overall costs.
Consequently, businesses should analyse interval meter data before switching.
Demand tariffs consider not only how much electricity a business consumes but also how intensively it uses electricity at particular times.
Consumption is generally measured in kilowatt hours, while demand is commonly measured in kilowatts. A demand charge can therefore be influenced by periods when several electricity-intensive systems operate simultaneously.
For example, consider two businesses that consume the same total electricity. One operates equipment progressively throughout the day, while the other runs several large systems simultaneously.
Under a demand tariff, the second business may face higher costs because it creates a larger maximum demand peak.
Businesses may reduce avoidable demand peaks by staggering equipment start times, adjusting HVAC operation, scheduling flexible machinery and using automated energy controls.
Therefore, demand tariffs may be appropriate for organisations that understand and actively manage their load profiles. Conversely, businesses with unpredictable electricity requirements should carefully assess the financial implications before choosing this structure.
Controlled load tariffs provide separate pricing for certain eligible equipment or circuits. They are commonly associated with equipment that can operate during specified periods rather than requiring unrestricted electricity supply.
However, eligibility depends on the site's equipment, meter configuration and available electricity plans.
Block tariffs work differently. They separate electricity consumption into usage bands, with different rates applying as consumption moves through specified thresholds.
Businesses considering either structure should examine how the tariff operates against their normal and forecast electricity consumption.
Smart and interval meters provide detailed information about when electricity is consumed. As a result, they enable more sophisticated tariff structures such as time-of-use and demand pricing.
For businesses, this data can be valuable.
Rather than reviewing only total electricity consumption on a bill, businesses can identify periods of high usage and recurring demand peaks. Subsequently, managers can determine whether operating schedules are contributing unnecessarily to electricity costs.
However, a smart meter does not automatically reduce electricity expenses. Businesses still need to use the available data to make better energy decisions.
A business's load profile should be central to tariff selection.
Instead of considering only annual electricity consumption, examine when and how electricity is used.
Important questions include:
These factors help determine whether flat, time-of-use or demand pricing is likely to suit the organisation.
For example, a warehouse capable of charging equipment overnight may benefit from time-of-use pricing. Meanwhile, a manufacturer running several large machines simultaneously may need to focus closely on demand charges.
One of the most common mistakes when comparing tariffs is focusing solely on the advertised cents-per-kilowatt-hour rate.
Depending on the tariff, electricity expenses may include supply charges, usage rates and demand charges. Therefore, an attractive off-peak rate may not provide the lowest overall cost if most consumption occurs during peak periods.
Businesses should instead calculate the estimated total annual cost of each available tariff using the same historical consumption data.
Energy Action's existing guidance on electricity supply contracts similarly emphasises understanding consumption patterns, peak demand and future growth when assessing electricity arrangements.
This approach provides a much more realistic comparison.
New energy technologies can substantially change a business's electricity profile.
Solar generation may reduce daytime grid consumption. Meanwhile, battery storage can potentially shift electricity use away from expensive periods or help control peak demand.
Electric vehicle charging can have the opposite effect if several vehicles charge simultaneously, potentially creating a substantial new electricity peak.
Therefore, businesses should review their tariff whenever major energy technologies or equipment are introduced.
A tariff and an electricity supply contract are related but different.
The tariff determines how electricity charges are structured, while the supply contract sets commercial terms for purchasing electricity.
Businesses should assess both.
Energy Action's guidance on commercial electricity prices highlights monitoring electricity consumption and shifting flexible usage away from expensive periods as potential cost-management strategies.
Therefore, tariff optimisation should form part of a broader energy procurement strategy rather than being considered in isolation.
Businesses can avoid several common problems when selecting a tariff.
Choosing solely according to the lowest advertised usage rate is one of the biggest mistakes. Total costs matter more than one component of the bill.
Similarly, businesses on demand tariffs should not ignore short periods of intensive electricity consumption. A temporary demand spike can materially affect costs depending on the applicable tariff calculation.
Another mistake is assuming that off-peak pricing automatically saves money. Savings depend on whether enough electricity consumption can actually be moved into lower-priced periods.
Finally, businesses should consider future operations. Expansion, new machinery, solar installations, batteries and electric vehicle charging can all change which tariff structure works best.
A structured comparison can make tariff selection considerably easier.
First, collect at least 12 months of electricity bills and interval data where available. This provides insight into seasonal variations and consumption patterns.
Next, identify periods of high electricity consumption and maximum demand. Determine which equipment contributes to these peaks and whether its operation can be adjusted.
Then, compare available tariffs using historical consumption. Importantly, calculate the complete estimated cost rather than comparing individual usage rates.
Finally, consider future requirements. Business expansion or new energy technologies could change electricity consumption substantially.
This approach allows tariff decisions to reflect actual business requirements rather than assumptions.
Business electricity requirements change over time.
A company may add equipment, extend trading hours, install solar panels or introduce electric vehicles. Each change can alter the load profile and potentially affect which tariff offers better value.
Therefore, electricity tariffs should be reviewed periodically.
Energy Action's existing guidance on business energy in Australia also emphasises regularly reviewing and optimising energy plans to identify potential cost-saving opportunities.
Regular analysis helps ensure electricity arrangements continue to align with operational requirements.
Choosing the right business electricity tariff types requires more than finding the lowest advertised electricity rate.
Single rate tariffs provide simplicity, while time-of-use tariffs can reward businesses capable of moving consumption away from expensive periods. Meanwhile, demand tariffs make maximum electricity demand an important cost consideration. Controlled load and block tariffs can also suit particular business circumstances.
Ultimately, the right choice depends on your operating hours, consumption profile, peak demand, meter configuration and future electricity requirements.
Energy Action helps Australian businesses understand their energy consumption, procurement requirements and electricity cost-management opportunities. With the right analysis and energy strategy, businesses can make more informed tariff and contracting decisions.
Visit Energy Action to explore energy procurement and management solutions designed to help Australian organisations take greater control of their energy costs.
The main business electricity tariff types include single or flat rate, time-of-use, demand and controlled load tariffs, while some plans may also use block pricing. Each structure calculates electricity charges differently. Therefore, the best option depends on how and when your business consumes electricity.
Neither tariff is automatically better. Flat pricing can suit businesses with consistent consumption or limited ability to shift operations, while time-of-use pricing may suit organisations capable of moving significant loads into lower-priced periods. Comparing both structures against historical interval data provides a stronger basis for making a decision.
A demand tariff includes charges associated with how intensively a business draws electricity during specified periods. Therefore, running several large systems simultaneously can create a higher demand peak and potentially increase electricity costs. Businesses can investigate staggering equipment or managing flexible loads to control unnecessary peaks.
Time-of-use and demand tariffs generally require metering capable of recording when electricity is consumed. Smart or interval meters provide this detailed consumption information. However, tariff availability also depends on the retailer, distributor, location and meter configuration.
Start by analysing at least 12 months of electricity consumption, operating hours and peak demand. Then compare available tariffs using estimated total costs rather than only headline usage rates. Additionally, consider future changes such as business expansion, solar, battery storage or electric vehicle charging because these can change which tariff provides the best fit.
