When having basement pumps installed (sump pumps), it is becoming an important consideration for the property owner to be informed of the energy consumption and cost of running their pump station. This article provides an explanation of how much the Delta standard ground water basement pump costs to run.
The calculations and base data used in this document are detailed below:
Graph 1 shows the number of cycles of each pump station (data collected from 139 pump stations monitored) over the course of a week.
Table 1 shows the raw data calculation used to establish the kWh per year per pump energy usage. This usage ranges from 3.1kWh (V3) to 8.0kWh (V6). The most common ground water pump station used in a domestic dwelling is the Delta Dual V3 which houses two V3 pumps. Only one of these pumps is used in normal operation, the second is there for backup.
Table 2 shows the cost of running a pump using the assumed tariff (see above), multiplied by the kWh/year from table 1.
As an example, an ‘A+++’ rated washing machine uses on average 130kWh per year. This means the cost of running the pumps in your pump station (which keep your basement nice and dry) is 98% less than running your washing machine!