YUE LIU 8/7/2013

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Dear Taylor,

Could you please help me to clarify some specific questions? I would appreciate it very much!

In the Electricity Generate model under Transformation branch, from the example and national _starter models, I noticed that there are two ways for inputting the Exogenous Capacity expressions for the processes in the Current Accounts.

One is that you have historical generation capacity data for each electricity generation process and store these data in the Key Assumptions branch, and later use these data as the exogenous capacity in the Current Account.

The other one is that you have historical productions of each process, in Current Account, the exogenous capacity for each process calculated by the expression of

Historical Production [MW-hr]/ (8760 * Maximum Availability)

My questions are that are these two ways of inputting data for the exogenous capacity in the Current Account both valid? Does the choice of which way to use here depend on the accessibility of historical capacities of processes or the historical productions of processes? If both historical data are available, is there any preference for which way to use?

Many thanks!

Cheers,
Yue

Taylor Binnington 8/7/2013
 

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Hi,

I'm not sure why you would want to store this information in Key Assumptions, to be honest. I'm also not quite sure what you mean by 'historical generation capacity data'.

It's best to enter your historical production data directly into the Historical Production tab for each of your electricity generation processes in Current Accounts. You're free to enter anything you want in the Exogenous capacity tab under Current Accounts, as long as the installed capacity is sufficient to meet the historical production that you've specified. If you're going to use historical production as a way to calculate exogenous capacity, however, keep in mind that the calculation will depend on more than just the availability of each plant and the number of hours in a year.

Hope this helps,

Taylor

YUE LIU 8/7/2013
 

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Hi Taylor,

Thanks a lot for your helpful reply!

The way of storing the capacity information in the Key Assumptions was referring to the leap application of China Economics of Climate Change, 2009 which downloaded from the COMMEND leap application webpage.

It is a very good reminder that calculating exogenous capacity from historical production data is more complicated than just considering the availability and hours.

I think I will start from using the historical capacity data of each preocess(e.g. coal, wind, etc.) as the exogenous capacity in the Current Account and try to run it first to see whether it would meet the historical production specified or not. And then I could adjust exogenous capacity data from there.

Thanks again!

Cheers,
Yue