How Much Electricity Does a WEIMI Self-Service Dog Wash Use Per Wash? Real Operating Data and Cost Analysis

For anyone considering a self-service dog wash business, water, shampoo, and routine maintenance costs are relatively easy to understand. Electricity consumption, however, is often misunderstood.

Some operators simply add together the rated power of the dryer, water pump, and water-heating system. This method can significantly overestimate actual energy use because rated power represents the power a component may draw while operating. It does not mean that every component runs continuously at full power throughout the entire wash.

Based on 10 consecutive days of real operating data from a WEIMI self-service dog wash, the machine consumed 68.08 kWh of electricity while completing 50 paid wash orders.

The data produces two different but equally important figures:

• All-in average including daily base consumption: 1.36 kWh per wash

• Incremental wash-cycle consumption after removing base load: approximately 0.65–0.75 kWh per wash

Therefore, if an operator wants to know how much additional electricity one customer uses during a wash, the most reasonable answer from this WEIMI data set is approximately 0.65–0.75 kWh.

To calculate the machine’s total monthly electricity bill, however, the operator must also include its daily standby and base energy consumption.

Real WEIMI Self-Service Dog Wash Energy Data

This analysis uses 10 consecutive days of electricity-meter readings and completed-order data from a WEIMI self-service dog wash:

Date	Daily electricity use	Completed orders	All-in average
2026-08-05	10.26 kWh	6	1.71 kWh/wash
2026-08-04	3.75 kWh	5	0.75 kWh/wash
2026-08-03	7.64 kWh	5	1.53 kWh/wash
2026-08-02	10.29 kWh	7	1.47 kWh/wash
2026-08-01	11.14 kWh	13	0.86 kWh/wash
2026-07-31	5.27 kWh	3	1.76 kWh/wash
2026-07-30	5.05 kWh	5	1.01 kWh/wash
2026-07-29	5.64 kWh	2	2.82 kWh/wash
2026-07-28	3.12 kWh	0	—
2026-07-27	5.92 kWh	4	1.48 kWh/wash
Total	68.08 kWh	50	1.36 kWh/wash

The most direct calculation is:

68.08 kWh ÷ 50 washes = 1.36 kWh per wash

However, this result includes the electricity used by the WEIMI machine when no customer was actively washing a dog.

On July 28, the machine completed no orders but still consumed 3.12 kWh. This indicates that the machine requires electricity to maintain essential control, payment, connectivity, and supporting systems even when there are no wash transactions.

If 3.12 kWh is used as a reference daily base load, estimated base consumption over 10 days is:

3.12 kWh × 10 days = 31.2 kWh

After subtracting this base load, electricity associated with the 50 wash orders is:

(68.08 − 31.2) ÷ 50 = 0.74 kWh per wash

A linear analysis of daily electricity use against daily order volume produces a similar result: approximately 3.52 kWh of daily base consumption and around 0.66 kWh for each additional order.

Because the two methods produce reasonably close estimates, a practical range for incremental WEIMI wash-cycle consumption is:

Approximately 0.65–0.75 kWh per wash

This result reflects the conditions during this specific 10-day operating period. Ambient temperature, customer usage time, dog size, drying duration, water temperature, and equipment settings may all affect the final result.

Why Does the Machine Use Electricity When There Are No Orders?

A WEIMI self-service dog wash needs to remain available so customers can pay for and start the service during operating hours. The entire machine does not switch on only after a customer makes payment.

Base consumption may come from systems such as:

• Main control system

• User interface

• Payment system

• Network and remote communication modules

• Indicator lights or internal lighting

• Water-temperature control

• Environmental temperature protection

• Supporting systems required to keep the equipment ready

It is therefore important to separate base consumption from active wash consumption.

Active wash consumption is the additional electricity used while a customer operates functions such as water supply, pumps, product dispensing, warm water, and drying.

Base consumption is the electricity required to keep the WEIMI system ready, connected, and available when no wash is currently in progress.

Why Does the All-In Average Vary So Much?

The operating data shows that the all-in electricity consumption per wash is generally higher on days with fewer orders.

On July 29, the machine completed only two orders and consumed 5.64 kWh. The all-in average was therefore 2.82 kWh per wash.

On August 1, it completed 13 orders and consumed 11.14 kWh. The all-in average fell to 0.86 kWh per wash.

This does not necessarily mean that customers use less water, drying, or other functions when more orders are completed. The main reason is that the machine’s fixed daily base load is distributed across a larger number of transactions.

Assuming a daily base load of 3.12 kWh and incremental consumption of 0.74 kWh per wash:

Daily orders	Estimated daily consumption	All-in consumption per wash
2	4.60 kWh	2.30 kWh
5	6.82 kWh	1.36 kWh
10	10.52 kWh	1.05 kWh
20	17.92 kWh	0.90 kWh

Increasing utilization of the WEIMI dog wash can therefore increase revenue while reducing the amount of base energy allocated to each transaction.

How Much Does Electricity Cost Per WEIMI Dog Wash?

The calculation is straightforward:

Electricity Cost per Wash = Electricity Used per Wash × Local Price per kWh

According to the U.S. Energy Information Administration, the average U.S. commercial electricity price was approximately 14.19 cents per kWh in June 2026. Actual prices vary significantly by state, utility provider, and commercial tariff. U.S. Energy Information Administration commercial electricity data

Using $0.1419 per kWh:

Active Wash-Cycle Electricity Cost

0.74 kWh × $0.1419 = $0.105

The additional electricity cost of completing one wash is therefore approximately:

$0.11 per wash

All-In Electricity Cost Including Base Consumption

1.36 kWh × $0.1419 = $0.193

The all-in electricity cost is approximately:

$0.19 per wash

The following table shows the cost at different commercial electricity rates:

Commercial electricity price	Active cost at 0.74 kWh	All-in cost at 1.36 kWh
$0.10/kWh	$0.07	$0.14
$0.15/kWh	$0.11	$0.20
$0.20/kWh	$0.15	$0.27
$0.30/kWh	$0.22	$0.41
$0.40/kWh	$0.30	$0.54

If a self-service wash is priced at $15, an all-in electricity cost of $0.19 represents approximately 1.3% of revenue. At a $20 selling price, electricity represents less than 1%.

These figures cover electricity only. They do not include water, wastewater charges, shampoo, conditioner, payment processing, site rent, cleaning, or equipment maintenance.

How Much Electricity Does a WEIMI Dog Wash Use Per Month?

Monthly electricity use can be estimated with this formula:

Monthly Consumption = Daily Base Load × Operating Days + Incremental Consumption per Wash × Monthly Orders

Using a daily base load of 3.12 kWh, incremental consumption of 0.74 kWh per wash, and 30 operating days:

Monthly orders	Average daily orders	Estimated monthly use	Cost at $0.1419/kWh
150	5	204.6 kWh	$29.03
300	10	315.6 kWh	$44.79
450	15	426.6 kWh	$60.54
600	20	537.6 kWh	$76.28

Even when monthly volume increases from 150 to 600 washes, the electricity expense remains relatively manageable. As order volume grows, the fixed base load is also spread across more transactions.

What Factors Affect Electricity Use per Wash?

Dog Size and Coat Type

Large dogs, long-haired breeds, and double-coated dogs generally require longer rinsing and drying times. Longer dryer use usually increases electricity consumption.

Customer Usage Time

Customers do not all use the WEIMI self-service dog wash in the same way. Some may rinse for longer or use the drying function repeatedly, causing individual energy consumption to vary.

Inlet Water and Ambient Temperature

If electricity is used to heat water, colder inlet water may require more energy. Outdoor machines operating in cold climates may also require additional temperature protection.

Hot-Water Supply Method

Internal electric heating, a centralized hot-water system, and other energy sources produce different electricity figures. When comparing machines, operators should confirm whether the reported energy data includes all energy required to provide hot water.

Drying Time

Drying is an important influence on energy use. Required drying time depends on dog size, coat density, humidity, and customer behavior.

Standby Settings

The display, lighting, network connection, temperature settings, and environmental protection functions can affect base consumption.

WEIMI self-service dog wash equipment can support unattended operation, but operators should still configure operating schedules and equipment settings according to local climate and actual business hours.

How Can Operators Obtain More Accurate Energy Data?

Although 10 days of data provides a useful initial reference, operators should ideally collect 30 to 90 days of readings for a formal return-on-investment analysis.

The following information should be recorded:

• Total daily electricity consumption

• Number of completed and paid orders

• Electricity use on zero-order days

• Average wash duration

• Dryer usage time

• Local ambient temperature

• Inlet water temperature

• Daily equipment operating hours

• Electricity used for maintenance and cleaning

• Test cycles, refunded sessions, and free uses

A dedicated electricity meter should be installed for the WEIMI machine. Electricity used by site lighting, air conditioning, or unrelated equipment should not be included.

The order-management system and electricity meter should also use the same dates, time zone, and reporting period. Otherwise, transactions and energy consumption may be assigned to different days.

How Can Operators Reduce Total Electricity Costs?

Energy-saving measures should not reduce pet safety or customer experience. Operators can consider:

• Reducing display and lighting power when the equipment is inactive

• Adjusting temperature and supporting systems to actual operating hours

• Cleaning dryer filters and air inlets regularly

• Checking pumps, heating, and drying systems for abnormal operation

• Preventing leaks that cause pumps or temperature-control systems to run unnecessarily

• Using backend data to identify unusually high-consumption days

• Increasing daily utilization through memberships, marketing, and better site selection

• Including maintenance and test-cycle energy in operating reports

If the daily base load is relatively high, reducing unnecessary standby consumption may have more impact than shortening a customer’s normal wash session.

Is Electricity the Largest Cost of a Self-Service Dog Wash Business?

Based on this WEIMI operating sample and the average U.S. commercial electricity price, the all-in electricity cost is approximately $0.19 per wash.

Compared with an illustrative selling price of $15–$20, electricity represents only a small percentage of revenue.

Operators must also consider:

• Water and wastewater charges

• Shampoo and conditioner

• Payment processing fees

• Daily cleaning

• Equipment maintenance and replacement parts

• Site rent or revenue sharing

• Insurance

• Marketing

• Equipment investment and depreciation

A low electricity cost per wash does not mean that the business has no other significant expenses. A complete profitability analysis must combine variable costs, fixed costs, order volume, and initial equipment investment.

Final Conclusion

Based on 10 consecutive days of WEIMI self-service dog wash operating data covering 50 completed orders:

• Total electricity consumption was 68.08 kWh.

• The all-in average, including daily base consumption, was 1.36 kWh per wash.

• Electricity consumption on the zero-order day was approximately 3.12 kWh.

• After removing estimated base consumption, each wash added approximately 0.65–0.75 kWh.

• At the June 2026 average U.S. commercial electricity price, active electricity cost was approximately $0.11 per wash.

• The all-in electricity cost, including allocated base consumption, was approximately $0.19 per wash.

Operators considering a WEIMI self-service dog wash should not evaluate electricity costs using rated power alone.

Daily base consumption, incremental wash-cycle consumption, customer behavior, local electricity prices, and actual order volume provide a much more reliable picture of operating cost.

Long-term electricity-meter and order data can help operators calculate energy budgets, operating expenses, and investment returns more accurately.