Degree Day Analysis, Usage Analysis

Have you tried to reduce your energy usage? Are you having difficulty seeing what affect your measures have had?

What can make it difficult?

Temperature differences year over year or month over month

Bills with different number of days in the billing cycle

Different number of days in billing cycle?

Estimated meter readings?

Other considerations that affect your energy usage (occupancy rates, production rates, etc)

Maybe you have looked at temperature histories, or even degree days to try to balance out the effect of weather? If you have tried, you know it is not easy to do. If you haven't and you are reading this, you may be saving yourself a lot of work.

At Northeastern Energy Consultants, we will review your energy usage, apply statistical methods to calculate the most accurate set of degree days for YOUR application, develop statistical models (we may even have different models for different seasons) and determine with great accuracy what type of usage you would have expected. Only then can you be confident that your energy conservation measure worked (or didn't work!).

We realize that every building and every application is unique, and we will cater to your needs.

Whether you are an energy consultant needing to verify that your measure have benefited your client, a do it yourself end user, or an end user wanting to see if that product you paid for actually did something, we can help.

We are here to help you make sense of your situation.

Map of TMY3 Weather Stations

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(Click images to enlarge)

Expected Usage vs Actual Usage, after adjusting for temperature differences

Energy Usage as it varies with temperature, before the Energy Conservation Measure. This model is used to calculate the "expected" vales in the bar chart above.

Energy Usage as it varies with temperature, after the Energy Conservation Measure. Notice that the line is not as steep as before the energy reducing measure was introduced, indicating that less energy is used as temperature rises than was used previously.