Load Shedding and Demand Control

Peak Demand Management

Load shedding is a means of reducing demand usage in a facility and will reducing energy usage by up to 20%. Many times demand charges exceed 50% of the total electric power bill. This makes load shedding a very attractive option to reduce operating costs.

What is Demand Usage?

Demand usage is the total amount of electricity being used by a consumer during a defined time period. Demand varies from hour to hour, day to day and season to season. This usage that is expressed in kilowatts (not kilowatt-hours) and is called the demand peak on the system. The utility records demand over a 15-minute time period. The company is charged for the highest 15-minute usage recorded on the demand meter. After the utility reads the meter each month, demand is reset to zero and the meter starts over, recording the highest 15-minute usage for the next billing period. You will see this charge on your power bill.

  1. kva charge
  2. kWh charge (not kW)
  3. demand charge
  4. demand usage

The demand charges many times exceed 50% of their total electric bill. This makes “Load Shedding” very attractive to reduce companies operating costs.

Demand Usage

How Does Load Shedding Work?

In order to reduce demand peaks in a facility, the Maximum Demand Controllermonitors the main utility meter in the facility and by measuring every 5 minutes the demand usage, the DemandMiser will perform automatic load shedding when it notices a demand peak is coming. Shown below are example loads that would be connected for demand control:

  1. Compressors
  2. Fan Motors (with variable speed systems)
  3. Electric Heaters
  4. Pumps
  5. Air Conditioners & Others

Demand Usage Reporting

Demand Usage Reporting Advanced reports show the demand usage and loads being shed for each location. If you would like to reduce load shedding, you can automatically adjust the threshold until you are comfortable with the values. Graphing capabilities provide information such as daily, monthly, yearly demand usage and can be easy glanced over using various line chart, bar, or pie. The DemandMiser provides a graph that compares demand usage by location, size,operation, hours etc. A demand usage profile of one facility can be compared with another. This data can be used to negotiate contracts for energy usage and to reward facilities that have reduced their overall energy usage.

Demand Notification & Alerts!

Notification & Alerts!

Alerts and notifications can be configured to notify what loads were shed and period of time and current peak demand that can be easily compared to previous demand peaks.

Automatic Load Adjustment

Automatic Load Adjustment

The web interface is easy to use for setup and load shedding configuration. Custom load limits can be set for each month providing more control. The demand controller has an algorithm that automatically increases the load limit if more energy is needed for the building eliminating excessive demand shedding.

Access Multiple Locations

Access Multiple Locations

The DemandMiser Maximum Demand Controller is the only system on the market that can remotely connect to other locations that have Demand Controllers installed. For companies that have multiple locations, energy managers can easily view data and configure systems from a single location via the web interface.

Easy Integration & Demand Response

The system easily integrates with facilities that use power monitoring meters. The DemandMiser can be provided with a digital kW / kWh transducer. The Maximum Demand Controller accepts a pulse input that will read the main meter energy usage. Load shedding outputs can interface with the existing building management system using dry contact or 24VDC relays. The Maximum Demand Controller integrates with utility demand response programs allowing each demand controller to initiate immediate load shedding to reduce the load on the power grid.

Applications

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