training exercises - Tellus Institute

1.3 Demand
This preliminary demand analysis exercise considers only the energy used in Freedonia
households. You will start by developing a set of “Current Accounts” that depict household
energy uses in the most recent year for which data are available (2000). You will then
construct a “Reference” scenario that examines how energy consumption patterns are likely to
change in the coming years in the absence of any new policy measures. Finally, we will
develop a “Policy” scenario that examines how energy consumption growth can be reduced
by the introduction of energy efficiency measures.
1.3.1 Data Structures
The first step in an energy analysis is to design your data structure. The structure will determine
what kinds of technologies, policies, and alternative development paths you can analyze. It will
be guided by the information you collect (data and assumptions) and by the relationships you
assume. For instance, you might consider whether you want to include branches for all possible
end-uses or only for major categories of residential energy consumption, you might consider
whether residential energy intensities should be developed on a per capita (i.e. per person) or per
household basis, or you might consider whether energy demand be a direct function of income or
prices. (In this simple exercise we don’t include these factors).
Before using the software, it is therefore important to plan the way you will enter data into the
program. Read the following description of the relevant data (in sections 1.3.2 to 1.3.3) to get an
idea of the types of data structures that are possible. Note that there is more than one branch
structure that can be created with the data provided.
It is a good idea to sketch the structure before entering it into LEAP. Use the blank spaces below
for your sketch. If you are working as part of a training course, discuss your first sketch with
your instructor and revise your drawing if needed.
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