In this week’s previous Energy Waste Sensei post, Sensei Bruce demonstrated how to break down data analysis to provide a clearer view of your energy profile and he explained how to plan and take action. Next, in this first of a two-part blog post, you’ll learn how to shift your energy profile to reduce energy consumption and focus in on where you actually need to spend your time and money.
There are many factors that drive us to reduce our energy consumption. Some of these factors may include policy mandates, governmental regulations, and green initiatives, but we can probably all agree that cost to our bottom line is number one.
As we stratify our electrical energy data, there are other data elements that should be included to provide a better picture of what is happening and bring clarity to the areas where we need to focus. These elements include our cost data. As you can see in Figure A, we’ve taken the chart from Sensei Bruce’s last post and added a cost-time horizon to the X-axis. Now with this one simple addition to our graphs, can you see where we need to focus? Note: the cost-time horizon is based on the Ontario residential cost structure. The cost structure for industrial customers is primarily based on peak consumption during the 5 system peak hours. Other large users’ cost structure depends less on when the power is used, but more on total consumption.
Figure A: Building’s Electricity Demand Over the Course of the Day
Today’s lesson is about seeing what we haven’t already pieced together and bringing it to life. When we start the stratification process, it usually includes a large data set that doesn’t tell us very much. This is represented in the graph in Figure B as the total energy profile and is the biggest cost to our operation. This insight identifies an important area for impact! Before we stratified our data, we knew we had high demand (contributing to high energy costs) across a large range of time during the day, but now, we can see a narrower range of time when this high demand costs particularly more due to the higher Time of Use (ToU) rate it is billed at. We can easily see now that we should focus on learning about the energy usage in these hours of the day since demand reduction within this span of time will add up to the highest cost savings overall.
Figure B: Focus on Building’s High Electricity Demand at High ToU Rate
In the second half of this two-part blog post from Sensei Bruce: We continue to explore our high cost peak demand and continue to “chop it up” into bite size servings!