LEAP

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Topic: creating reference scenarioSubscribe | Previous | Next

Pritam Lama 3/4/2017

Dear all,

I have input all the energy demand data for the base year. Now, I would like to model the energy demand in reference scenario with following equation.

ESD_{i, t}= (POP_t/ POP₀) ^α1i x (GDPt/ GDP0) ^α2i
x ESD_i0
Where,
ESD_i, _t = level of service
demand type i in year t for a sector
POP_t = population in year t
GDP_t = aggregate GDP in year t
á1i = population elasticity of service demand type i
á2i = GDP elasticity of demand for service type i

Calibri;mso-fareast-theme-font:minor-latin;mso-hansi-theme-font:minor-latin;
mso-bidi-font-family:Mangal;mso-bidi-theme-font:minor-bidi;mso-ansi-language:
EN-US;mso-fareast-language:EN-US;mso-bidi-language:AR-SA">How can i do this?
Looking for your help.

Taylor Binnington 3/9/2017

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1 Like

Hi Pritam,

You can use the Expression Builder type this equation directly into LEAP, once you identify the LEAP variable which you wish to project. Before I make a suggestion about where to enter the expression, can you tell me how you've added your energy demand in the base year (i.e. what type of branches did you add to your tree in order to input this information)?

I would recommend that both your population and GDP assumptions be entered as Key Assumptions in your model, so that you may reference their values in calculations as you wish. If I assume that these Key Assumptions are found directly below LEAP's "Key" branch, then using LEAP's syntax, your equation translates to:

Value(BaseYear) * (Key\Population / Value(Key\Population, BaseYear))^(elasticity 1) * (Key\GDP / Value(Key\GDP, BaseYear))^(elasticity 2)

...where elasticity 1 / 2 are your population and GDP elasticities, respectively. This relies on LEAP's Value() function, which is briefly described here: http://www.energycommunity.org/WebHelpPro/Expressions/Value.htm

For some additional information, I'd recommend reading through this help file as well: http://www.energycommunity.org/WebHelpPro/Concepts/Expressions.htm

Hope this helps,

Taylor

Pritam Lama 3/13/2017

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Hi Taylor,

I have attached the screenshot of the branches. Where can I enter the expression?

Looking for your help.

Regards,

Pritam

Taylor Binnington 3/13/2017

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Hi Pritam,

This depends on what quantity you wish to tie to your population and GDP. Is it energy consumption for residential cooking? If so, then you could enter my expression under Demand\Residential\Cooking:Final Energy Intensity, in one of your scenarios which inherits from Current Accounts. Since you are only modifying the energy intensity of the category, this would not affect any of the fuel shares beneath.

Taylor

Pritam Lama 3/13/2017

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Hi
Taylor,mso-fareast-font-family:"Times New Roman";mso-bidi-language:NE">

The equation is for the
residential sector end use demand. As per your suggestion I have enter the
expression and attached the screenshot of it. Similarly for other sectoral end
use demand I need to input the following equations.

ESD_i;t= (GDP_t/GDP₀)^a2i *ESD_i;0(for transport sector end
use demand)

ESD_i;t= (VA_t/VA₀)^a3i *ESD_i;0 ( for other sector end use demand)

Where, ESD_i;t= level of service demand
type i in year t for a sector

GDP_t = aggregate GDP in year t

VA_t = value added in the
relevant sector in year t

a1i = population
elasticity of service demand type i

a2i = GDP elasticity of
demand for service type i

a3i = sectoral value
added elasticity of demand for service type i

Can I enter these
equations the same way I did for residential sector.

Looking for your help.

Regards,

Pritam

Utsavshree Rajbhandari 4/14/2017

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Dear Pritam,

I might be little too late and i hope you have corrected the mistake, but, just in case, if you have not noticed, the energy intensity for each end use you have entered is off by a factor of a million.

This is a common confusion during modelling, usually when you use branch variables. It can be avoided by tallying your output data from LEAP, either in result view or in review pane(just below where you enter your expressions) with original data.

I see you have used data from WECS, 2014. So result view in matrix form with demand technologies by fuel type is best one to compare your data for base year.

Mario Biague 4/26/2017

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Calibri;mso-fareast-theme-font:minor-latin;mso-hansi-theme-font:minor-latin;
mso-bidi-font-family:"Times New Roman";mso-bidi-theme-font:minor-bidi;
mso-ansi-language:EN-US;mso-fareast-language:EN-US;mso-bidi-language:AR-SA">Good afternoon!

Look, I'm a beginner of the LEAP, but when trying to insert the first formulas key Assumptions have not succeeded. So, I'm using your help, if possible of course, help me! I thank the attention and accept my compliments!

Mário Fernandes Biague

Taylor Binnington 4/26/2017

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Hi Mario,

In order for us to provide you with the best support, you will need to provide:

a) a complete description of the problem or the question that you have,

b) the set of steps that you have tried,

c) a description of what happens after you perform these steps.

Best,

Taylor

Bishal Bhattarai 2/12/2020

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Respected Sir, I am Bishal from Central Department of Environmental Science,TU and I am also planning to use LEAP model in my thesis. I am very much hopeful that you could help me for my research so i will be more than happy if i could get your email address or contact Number so that i can communicate more with you.