Energy Accounting

SKU: RVI-11489Duration: 20 Minutes

Buildings are constructed to provide enclosed environments within which people can comfortably live and productively work. Creating comfortable, productive environments requires energy, and energy costs money. Buildings account for 76% of all the electricity consumed in the U.S. With that much energy being consumed, there are certainly going to be some opportunities for improvements in operational efficiency. This interactive online course will cover some of the concepts and terms needed to understand and manage energy consumption.

Course Details

Specs

Training Time: 20 minutes

Compatibility: Desktop, Tablet, Phone

Based on: Industry Standards and Best Practices

Languages: English

Learning Objectives

  • Identify the controllable costs on an electricity bill for a commercial building
  • Define demand and consumption
  • Describe the relationship between power factor and building inductive loads
  • Indicate the minimum score for a building to qualify for Energy Star certification
  • Convert kW to BTU
  • Define Energy Use Intensity and list the data needed to calculate it
  • Name the typical electricity bill rate structures

Key Questions

The following key questions are answered in this module:

How is electricity measured?
Electricity is measured in watts, which is a joule per second, or the amount of work performed by a current of one ampere flowing across a potential difference of one volt.

What is the difference between demand and consumption?
Demand is a measure of use at one point in time and it is measured in kilowatts (kW), while consumption is the accumulation of demand over a period of time.

How is the information captured from submeters utilized?
The information captured from submeters greatly assists in troubleshooting, assessing trends in use, and identifying areas for possible savings.

How is the power factor for a building determined?
The power factor for a building is the ratio of the Active Power to the Apparent Power.

What is enthalpy?
Enthalpy is a property of a substance that is equal to its total internal energy plus the product of its pressure and volume.

Sample Video Transcript

Below is a transcript of the video sample provided for this module:

There are several factors that go into the rate structure seen on an electric utility bill. The most easily understood part of the bill in the consumption charge. A certain amount is charged for each kilowatt hour consumed. For commercial customers however, the rate per kilowatt hour is influenced by a number of factors: • Block or tiered pricing –Large consumers typically receive a consumption discount. The initial number of kilowatt hours in a billing period are purchased at the standard, or first block rate. Additional kilowatt hours are charged at a lower, or second block rate. • Time of Day (TOD) pricing – Electricity demand varies throughout the day. There are peaks in residential demand in the morning and in the evening. To incentivize customers who can alter their use, a surcharge may be added to the base rate for power consumed during these peak periods. Seasonal Pricing – as with TOD pricing, the extreme seasons of summer and winter place more demand on the utility companies and they may add a surcharge for use during those seasons.
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