Topic: Doubling the Share of Renewable EnergySubscribe | Previous | Next
Nadia Ouedraogo 3/6/2016
421 Views Hi,
I would like to calculate the share of RES in the gross final energy consumption of a region,(pursuant to the second SE4All objective: Doubling the Share of Renewable Energy in the Energy Mix ).
Could you please indicate me the simpliest way to modeling this in Leap?
Many thanks
Nadia
Taylor Binnington 3/7/2016
419 Views Hi Nadia,
The way to calculate this depends on the specific definition of "gross final energy consumption". Your question reminds me of an earlier thread on this topic, which you can follow here:
http://www.energycommunity.org/default.asp?action=9&read=2789&fid=68
Specifically, look to my first reply in the thread.
Note that if you are looking for total primary energy supply, you are able to view Resources: Primary Requirements, displayed by fuel, in LEAP's Results view.
If you wish to automatically calculate the share of RES in your gross final energy consumption, I would recommend doing this using LEAP's Indicators.
http://www.energycommunity.org/WebHelpPro/Indicators/Indicators.htm
Using an indicator, you will be able to build an expression that references each of the necessary results to calculate the quantity in which you're interested.
Hope this helps,
Taylor
Nadia Ouedraogo 3/8/2016
413 Views Hi Taylor,
Thanks a lot for your prompt answer.
Based on the thread and your indications, I tried to build an indicator:
Renewable proportion (as "share" is a reserved function name) equal to the following fonction:
results\demand\energy demand / (results\demand\energy demand\solar) + (results\demand\energy demand\wind) + (results\demand\energy demand\hydro) +(results\demand\energy demand\biomass)
However,I am always getting an error warning message: "Unrecognized reference: "\"".
I did try different combination: with and without parenthesis; brackets; spaces (between the different groups of expression) etc. But nothing works.
Am I doing something wrong?
Many thanks for your help
Nadia
Taylor Binnington 3/9/2016
412 Views Nadia,
That expression is not valid LEAP syntax. Have a quick look at this help page to understand how expressions are formed in LEAP:
http://www.energycommunity.org/WebHelpPro/Concepts/Expressions.htm
Generally, an expression takes the form "Branch\Subbranch:Variable[unit]".
If you're new to LEAP expressions and variable references, I would recommend that you enter this information using the "Branch/Variable" option, which can be accessed by clicking the orange "E" on the right side of LEAP's expressions field. This will guide you through the selection of a branch and variable.
In order to reference the energy demand for a particular fuel, summed across branches, you'll need to use the filtering capability of LEAP's expression references. For example, to reference the total consumption of wood across all final demands, you would enter:
Demand:Energy Demand Final Units[GJ, Fuel=Wood]
Hope this helps,
Taylor
Nadia Ouedraogo 3/10/2016
402 Views Thanks a lot Taylor!
I haven't yet used the filtering capability of LEAP's expression. You have been helpful.
Yet I still have a question. Indeed I don't know how to use the indicators I created to run my scenarios. Indeed I have now the share of RES and the target growth rate. But I need now to use it in one of my scenario. But everytime I am trying I receive a warning message saying that a value is trying to refer to an indicator and only an indicator can refer to another one.
How can I then use the indicator created in my scenario?
Many thanks again for your help.
Best
Nadia
Taylor Binnington 3/10/2016
401 Views Hi Nadia,
That's correct - LEAP does not allow you to reference indicators from any other non-Indicator branch. The reason is that Indicators are resolved *after* LEAP has performed all of its calculations in each year.
In your first message you mentioned that you wanted only to calculate the share of renewables. How do you want to use this value to affect the operation of your model?
Taylor
Nadia Ouedraogo 3/11/2016
388 Views Hi Taylor,
Thanks and sorry if my first message confused you.
I meant to analyse the doubling of the share of renewable energy according my different scenarios.
E.g: energy consumption increases by 0.7% and renewable share has to be doubled at the same time. The great part of the increase of the consumption must come from renewable.
How this will affect residential, industry, transportation demand; electricity production etc.
Thanks and best
Nadia
Taylor Binnington 3/14/2016
387 Views Hi Nadia,
Economy-wide renewable energy targets can be difficult to model. LEAP is a deterministic modeling tool, and the responsibility resides with the user to determine which fuels are consumed on the demand side of the model. This demand accounting then informs LEAP's transformation modules which fuels need to be produced.
This means that if you wish to model a policy target for renewable energy across your whole model, you'll need to decide - simultaneously - a) which sectors will contribute to the target (i.e. can it be satisfied entirely by increasing renewables in the power sector? or must the transportation/other sectors also directly consume renewable fuels directly?) and b) which renewable fuels will be used (i.e. wind in electricity? biodiesel in transport?).
There is no single variable in LEAP that you can use for this. Building an indicator will help you track your progress towards your renewable goal as you make changes, which you will need to make at several locations in your tree. For example, you may choose to dispatch your power plants using the "PercentShare" rule to ensure that renewable electricity meets a target share, to be decided by you. On the demand side you will need to change the Activity Level or Fuel Share variables in each of your sectors.
Hope this helps,
Taylor