gdmp model workshop 5 - structure of tim

Indo GDMP TIM ModelPilot Transportation Infrastructure Model (TIM)

Demo version (GDMP Workshop June 2013)

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Presentation outline• Objective, approach and key outputs of TIM

• Detailed presentation of TIM, covering– Assumptions– Scenarios– Limitations

• User manual of model, covering– Running the model and selecting different scenarios– Changing inputs– Retrieving key output information

• Practical application

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Objective of TIM and key questionsKey issue for Gas Infrastructure Policy: supply centres removed from major demand centres

Objective of TIM: identify set of least cost infrastructure options to balance supply and demand across regions until 2040

Key questions • What is the last cost infrastructure portfolio to balance regional supply and

demand?• What are optimized interregional LNG and pipeline flows?• What are the liquefaction, regasification and interregional pipeline capacity

requirements in each region? • What is the volume of unmet demand/imports in each region?• What is volume of excess supply, i.e. gas not consumed domestically or

exported? • What is the cost of delivered gas in each region?

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Map illustrating S/D imbalances across regions

Excess Production

Unmet DemandBased on DASS Base Case scenario

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Approach and overview of methodologyApproach followed in TIM is a minimization across transportation costs of pipeline and LNG connections

This is done for each year with given export, demand and production volumes (inputs from DASS) in each region

Approach ensures a balancing of supply and demand volumes across all regions at lowest transport cost

Illustrative example

C. Java

E. Kalimantan

W. Java

• If E. Kalimantan has excess supply and if W. Java has unmet demand

• TIM will prioritize connection via C. Java, because least cost: 2.1 $/mcf < 3.2 $/mcf

1.2 $/mcf

0.9 $/mcf

3.2 $/mcf

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Key outputsInfrastructure planning• Liquefaction, regasification and pipeline capacity needed to supply gas into each region• Optimized pipeline and LNG flows across regions• Earliest year gas transport infrastructure in each region is needed

Export and production policy• Level of unmet demand, i.e. demand that cannot be covered by domestic production• Volume of excess production, i.e. scheduled production that is neither exported nor domestically consumed

Investment requirements• Total cost of infrastructure requirements to balance supply and demand

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Output: Regional S/D balances, unmet demand, exports and interregional flows

Excess Production

Unmet DemandExportsDomestic Transfers

Click to go back to summary results slide

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Output: Interregional flows by connection concept


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Output: Infrastructure Plan


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Output: Costs, capacity requirements and throughputs


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Model overview

Infrastructure plan

Infrastructure cost summary

DASS inputs

INPUT DATA

Demand data

Transport costs used in minimisation

CONTROL PANEL

RESULTSSCENARIOS

Supply data

Export data

Connection Concepts

Run minimisation

Interregional LNG and pipeline flows

S/D balances, exports, and unmet demand by region

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Inputs (1/2): demand, production, exportDemand, export and production volumes over the period 2013-2040 will be imported from DASS.

This means that the results are dependent on policy scenarios simulated and constructed in DASS.

The transfer of DASS outputs to TIM Inputs is done via a transfer file.

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Inputs (2/2): Cost ParametersInput cost parameters are used for two purposes in model:1. To calculate ‘typical unit transport cost’ used in minimization – input into

minimization2. To calculate ‘total infrastructure costs’ needed for optimized

interregional flows and LNG exports – output of minimization

The cost input parameters in TIM include:

2013 Pipeline Cost assumptions Offshore Pipeline CAPEX 70,000 US$/inch/kmOnshore Pipeline CAPEX 35,000 US$/inch/km Compressor station costs 2,000 US$/horsepowerOne compressor station every 120 kmCapacity of compressor station 50 horsepower/Bcf/yLoad factor of PL 80% Annual OPEX 3%of CAPEX

2013 LNG Cost assumptions Liquefaction CAPEX 1,200 US$/t of cap/yLiquefaction OPEX 6% of CAPEX Shipping costs 114,000 US$/day/shipTypical cargo ship capacity 150,000 Tonnes of LNG

Traveling speed of LNG cargoes

30 km/h

Regasification CAPEX

130 US$/t of cap/yRegas Annual OPEX 4% of CAPEX Boil-off rate in process 10% of gas transported

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Scenarios: Connection concepts approachScenarios in TIM are defined by the selection of a combination of different ‘connection concept’

A connection concept consists of a transport link between two regions, i.e. an LNG or pipeline connection no specific infrastructure options are selected but connections between regions

The selection of the connection concepts over which TIM optimizes is done manually and has to be determined by the user

Example selection

Included?

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Scenarios: Optimization methodologyTIM projects gas flow profiles for each included connection concept until 2040

The flow projection is the result of minimizing the combination of transportation cost + volumes of unmet demand in every year

The optimization therefore seeks the least cost combination of (selected) connection concepts while avoiding as best possible unmet demand.

Cost used in optimizationTIM uses levelised per unit costs determined prior to optimization. These are calculated on the basis of:

• a typical flow profile for each connection concept • PV of CAPEX, OPEX and other costs (shipping costs for LNG, losses,….)• Where existing capacity exists only future OPEX are considered• Distance of connection concept

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Infrastructure cost and utilisation summaryInfrastructure plan

Results: Maps, Tables and key figuresInterregional LNG and pipeline flowsS/D balances, exports, and unmet demand by

region

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Key assumptions in optimization and result generation• Costs minimization is based on pre-determined typical flows and are not based on optimized flow profiles

• Costs over which are optimized are based on 2013 levels and are not assumed to change over time

• Connection concepts utilizing existing capacity are costed at OPEX up until additional capacity is required

•The minimium annual volumes of flows along a connection concepts warranting an expansion or construction of infrastructure is: • 13 Bcf/y for pipelines• 50 Bcf/y for Liquefaction• 25 Bcf/y for regasification

• Unmet demand is costed at DES LNG prices

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Limitations of TIM• Production costs are not included in optimization- only transportation cost are considered

• Due to the circularity of costs, i.e. costs depend on flows, which are the output of the optimization, TIM relies on a hypothetical cost number for each connection concept

• Excel not the best optimization tool, hence solutions might not necessarily be the global minimum solution but might be local minimum

• One iteration is not sufficient to provide insightful policy recommendations, need to adjust and change the list of connection concepts on the basis of the results from previous iteration

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Overview of model sheetsScreenshot of worksheet directory

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Running model and selecting different scenariosThe sheet where the user can select different scenarios is the control panel, where different connection options can be selected

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Changing input data (1/2) – Demand/Exports/ProductionTo change demand, export and production scenarios, need to select the INPUT|S_D Balance sheet and copy/paste scenarios simulated in DASS from the ‘DASS Transfer tab’

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Changing input data (2/2) – Cost dataTo change cost data and thereby change the unit transport costs used in the iteration, change turquoise cells in ‘INPUT|Cost’ sheet

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Running optimizationTIM allows for two iterations - we focus on 1.iteration initially. Optimization can be run from two sheets (‘Control Panel’ and Results|Infr. Plan’)

The minimization is run by clicking on the ‘Run optimization’ button at the top of each of the two sheets.

Keep button of ‘1.iteration’ selected for now

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Awaiting resultsOptimization can take up to 10 minutes and during optimization, user will be directed to RESULTS| Summary sheet.

The progress of the optimization can be tracked via the graphs on the sheet, which will update every 2-3 minutes.

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Retrieving key output data and informationAll key outputs are summarized in the ‘RESULTS|….’ tabs, which are marked in green

The four key outputs have been presented in previous slides and include:

• Infrastructure plan of additional infrastructure required• Two maps of flows and S/D balances showing the flows implied by the optimization• Summary cost and throughput data

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Potential problems with results and adjusting scenarios (1/3)Results form an initial optimization might have the following problems:• low utilization of infrastructure resulting in excessively high per unit costs

• Excess supply in some region and unmet demand in other regions

• Regions have high unmet demand as well as large outflows – suggesting they are importing gas to send it to other regions

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Potential problems with results and adjusting scenarios (2/3)These problems can be reduced by adjusting the list of connection concepts selected in further scenarios

• low utilization of connection concepts Proposed Solution: exclude in next run of model

• Excess supply in some region and unmet demand in other regions Possible solution: include connection concept between these two regions by selecting the respective option in ‘Control Panel’ or overwriting options

• Regions have high unmet demand as well as large outflows This results from the model finding a local minimum, possible solution: generally reduce the number of connection concepts

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Potential problems with results and adjusting scenarios (3/3)When adjusting and comparing the results of different runs, the key criteria is the change in ‘Volume of unmet demand’.

If unmet demand increases from one run to the next, the changes in connection concepts selected are not improving the interregional supply demand balance.

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Enabling Excel on your computer to allow for the model to run (1/2)Excel needs to be updated in order to allow ‘Solver’ to be run on your computer. Follow these steps:1. Enable Solver on your version of Excel:

• Click on the Microsoft button and click on Excel Options• Click the Add-ins category• In the Manage box, click Excel Add-ins, and the click Go• In the Add-ins available box, select the check box next to Solver

Add-in and the click Ok• Click Yes to install it

2. If you are using Excel 2007, you can now run the model. If you are using Excel 2010, continue these steps3. Run the optimization by clicking on ‘Run optimisation’ button in Control panel (should not take much time)4. Once finished, select the ‘Output|Calculation’ sheet, click on ‘Data’ and select Solver

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Enabling Excel on your computer to allow for the model to run (2/2)5. In the window that appears, select the GRG nonlinear option in the dropdown menu and click on Solve

6. You can now run the optimization by clicking on ‘Run optimisation’ button in Control panel and this will give you the desired results.7. Save the file after you’ve completed all above steps

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Practical application – Comparing results of base case and high case scenarios

Questions to be addressed:

1. By how much does volume of unmet demand (in PV terms) increase between base case and high case scenario?

2. How do the infrastructure recommendations change between high case and base case?

Approach: split attendees into two groups: one ‘base case’ group and one ‘high case’ group

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Practical application – adjusting connection concepts to find optimal combination – Step 1Step 1: Ensure Solver is installed on all participating laptops

Step 2: Copy production, export and demand numbers from DASS:

Group 1: Base Case numbersGroup 2: High case numbers

Step 3: select connection concepts listed in next slide

Step 4: run optimization

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Practical application – adjusting connection concepts to find optimal combination – Step 1

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Practical application – Answer to question 1Base Case: 20,018 Bcf

High Case: 40,706 Bcf

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Practical application – Answer to question 2Base Case:

High case:

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Back up

Advanced Practical application:

How to adjust the list of connection concepts to obtain an optimised set of infrastructure options?

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Advanced – adjusting connection concepts to find optimal combination – Step 1Under base case demand, export and production assumptions, select following options and run optimization:

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Advanced – adjusting connection concepts to find optimal combination – ResultsResults of 1. scenario are sensible (PV of unmet demand is 20,018), however two problems persist:• high unit costs for some options (see next slide)• Unmet demand and domestic outflows in S. Moluccas, Central Java, East Kalimantan and C. & S Sumatra

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Advanced – adjusting connection concepts to find optimal combination - Step 2On ‘Control Panel’, select button with 2. iteration to compare costs associated with optimized profile.

Exclude those concepts with excessive unit costsE. Java- C. Java PL Pipeline TRUE TRUE East Java and Bali Central Java 0.3 2,182.3 C. Java - W. Java PL Pipeline TRUE TRUE Central Java West Java 0.4 0.1 Eastern Kalimantan- C. Java PL Pipeline TRUE TRUE East Kalimantan Central Java 1.4 0.8 Riau-E. Kalimantan PL Pipeline TRUE TRUE Riau islands East Kalimantan 2.1 6.0 C. Sulawesi-South Sulawesi PL Pipeline TRUE TRUE Central Sulawesi South Sulawesi 1.0 338.1 Riau-Central Sumatra Pipeline TRUE TRUE Riau islands Central and South Sumatra 0.8 - Sumatra PL Pipeline TRUE TRUE Central & South Sumatra North Sumatra 0.2 0.1 SSWJ I&II Pipeline TRUE TRUE Central & South Sumatra West Java 0.3 0.3 PL Option 1 Pipeline FALSE FALSE - - PL Option 2 Pipeline FALSE FALSE - - PL Option 3 Pipeline FALSE FALSE - - LNG: NAD-W.Java LNG TRUE TRUE Nad West Java 3.3 12.1 LNG: E.Kal-C.Sum LNG TRUE TRUE East Kalimantan Central and South Sumatra 3.3 - LNG: E.Kal-W.Java LNG TRUE TRUE East Kalimantan West Java 3.3 83.4 LNG: E.Kal-E.Java LNG TRUE TRUE East Kalimantan East Java and Bali 3.3 8.6 LNG: C. Sul-C.Sum LNG TRUE TRUE Central Sulawesi Central and South Sumatra 3.3 - LNG: C. Sul-W.Java LNG TRUE TRUE Central Sulawesi West Java 3.3 - LNG: C. Sul-E.Java LNG TRUE TRUE Central Sulawesi East Java and Bali 3.3 139.5 LNG: Pap-C.Sum LNG FALSE TRUE Papua Central and South Sumatra - - LNG: Pap-W.Java LNG TRUE TRUE Papua West Java 3.3 19.6 LNG: Pap-E.Java LNG FALSE TRUE Papua East Java and Bali - - LNG: S.Mo-C.Sum LNG FALSE TRUE Southern Moluccas Central and South Sumatra - - LNG: S.Mo-W.Java LNG FALSE TRUE Southern Moluccas West Java - - LNG: S.Mo-E.Java LNG TRUE TRUE Southern Moluccas East Java and Bali 3.3 13.3 LNG Option 4 LNG FALSE FALSE - - LNG Option 5 LNG FALSE FALSE - - LNG Option 6 LNG FALSE FALSE - -

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Advanced – adjusting connection concepts to find optimal combination - Step 3After excluding the above options, on ‘Control Panel’, select button with 1. iteration again and run optimization.

Key results:• Unmet demand stays the same• Total infrastructure cost reduced from 53 billion US$ to 41 billion US$• Region’s unmet demand and outflows behave in a good manner

gdmp model workshop 5 - structure of tim

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