Doreen Irungu 12/20/2013

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Hi,

I wish to request for some information in regards to the relationship of the Load Duration Curve and capacity additions in Leap. my assumption is that you have use probablistic simulations inorder to match the demand and capacities. Is it possible to tell me the method you use; whether the cumulant method or otherwise?

Thanks & Kind Regards,
Doreen

Taylor Binnington 12/20/2013
 

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Hi Doreen,

LEAP is actually much more transparent than I think you imagine it to be. There is no hidden recalculation of the load curve as additional plants are added into the power system, using a probabilistic method or otherwise. The load curve that you specify using the Yearly Shapes dialogue box is unchanged under the addition of capacity to the power system. By corollary (I mention this only because I anticipate a further question!), LEAP does not define a loss-of-load probability based on the characteristics of each generator - rather, demand is either simply met, if there is sufficient available capacity, or it is unmet/imports are required, if there is insufficient capacity.

You've asked a good question, but it's important to keep in mind that LEAP is not necessarily a power system model. Rather, it aims to capture long-term (decadal or more) trends in the complete energy sector, and as such, it offers only limited modeling capabilities for the electricity sector.

If you'd like to read more about capacity addition calculations, please have a look at our Endogenous Capacity help page:

http://www.energycommunity.org/WebHelpPro/Transformation/Endogenous_Capacity.htm

...as well as our Endogenous Capacity Addition Calculation help page:

http://www.energycommunity.org/WebHelpPro/Transformation/Endogenous_Capacityu_Expansion_Calculations.htm

Note that these pages are specific to 'non-optimized' transformation modules - please let me know if you'd like to follow up for more information about LEAP's optimization calculations, but for the time being I wanted get you started with this information. To summarize, LEAP will build new endogenous capacity to meet demand + reserve, using only the types of power plants and the addition sizes that you allow using the 'Endogenous Capacity' variable.

Hope this helps!

Taylor

Doreen Irungu 12/21/2013
 

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Hi Taylor,

Thanks for the response, It has helped alot. I had so many questions on simulation of the LDC including the LOLP because they are not mentioned in the LEAP user guide.

I would really appreciate if you sent more information on LEAP's optimization calculations.

Kind Regards,
Doreen

Taylor Binnington 12/29/2013
 

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Hi Doreen,

I suspect that the best place that I can direct you is to our help page, which introduces LEAP's implementation of the OSeMOSYS algorithm.

http://www.energycommunity.org/WebHelpPro/Optimization/OptimizationIntroduction.htm

Here (and in links contained within) you'll find additional information about how LEAP constructs and dispatches capacity in a least-cost way. You would also find it useful to work through Exercise Six of our General Purpose Training Materials:

http://www.energycommunity.org/default.asp?action=42

which provides a good introduction to LEAP's optimization capabilities.

Hope this helps,

Taylor