Energy efficiency and Demand Side Management Program ... - Eskom
Energy efficiency and Demand Side Management Program ... - Eskom
Energy efficiency and Demand Side Management Program ... - Eskom
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6.1 Evaluation Marking System Development<br />
Following the assessment methods suggested above, all the necessary aspects will be considered <strong>and</strong><br />
prioritised in such a way that a sustainable solution could be suggested. The use of a decision matrix<br />
that incorporates the above four major aspects of any energy <strong>efficiency</strong> project <strong>and</strong> an analysis of<br />
this matrix according to the various indicators of the POET structure are highly suggested. The matrix<br />
should include several indicators from each of the four important aspects to be considered.<br />
6.1.1 Engineering Aspects<br />
Table 1 shows such a matrix for the evaluation of engineering aspects of a program. Technical issues<br />
within a program will be evaluated by one or more of the T, E, O, P indicators in terms of the impact<br />
from the program. For instance, the energy consumption before <strong>and</strong> after the program <strong>and</strong> the<br />
expected/actual saving, the percentage of renewable energy added in the energy system or grid,<br />
etc., can be evaluated by purposely selected POET indicators. A score will be given for each of the<br />
evaluated items, using a fixed indicator. Weighting factors will be determined for each of the<br />
evaluation indicators to indicate the preference or importance of such indicators in the evaluation.<br />
The subtotal score for engineering aspects will be the sum of all the products of the scores <strong>and</strong> the<br />
corresponding weighting factors. An example is provided in Appendix 2 to further illustrate this<br />
evaluation process. The program evaluator can select a number of POET indicators for evaluation,<br />
<strong>and</strong> then either give the corresponding scores for items evaluated, or design a number of Yes/No<br />
questions to ask <strong>and</strong> determine the corresponding scores according to the Yes/No answers. Note<br />
that existing M&V guidelines provide enough technical details in the evaluation of the energy or<br />
power indicators in different scenarios, therefore, the details of the program evaluation from<br />
engineering aspects can follow the general guidelines <strong>and</strong> techniques in references [3], [4], <strong>and</strong> [6],<br />
<strong>and</strong> the evaluators can design flexibly the evaluation criteria according to these general guidelines<br />
<strong>and</strong> the specific program needs.<br />
Engineering aspects Technology Equipment Operation Performance<br />
Technical issues of a<br />
program (e.g. processes<br />
of energy auditing,<br />
planning, <strong>and</strong> targeting;<br />
methodologies; etc.)<br />
Items which might be<br />
considered in scoring (e.g.<br />
pre‐ <strong>and</strong> post‐<br />
implementation data <strong>and</strong><br />
impact from the program<br />
(savings, etc.))<br />
Scores (out of 100)<br />
Weighting factors (in<br />
percentage)<br />
Subtotal score<br />
Feasibility;<br />
Life cycle<br />
cost;<br />
<strong>Energy</strong><br />
transfer<br />
/transmitting<br />
/converting<br />
ratio<br />
Specifications;<br />
Maintenance;<br />
etc.<br />
Table 1 <strong>Program</strong> evaluation from engineering aspects<br />
12<br />
Sizing;<br />
Matching of<br />
system<br />
components;<br />
<strong>Energy</strong>/power<br />
consumption;<br />
<strong>Energy</strong><br />
carrier/source;<br />
<strong>Energy</strong> safety;<br />
Reporting;<br />
Project<br />
organisation