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Energy Exemplar® - Energy Market Modelling Software White Papers

Energy Exemplar® - Energy Market Modelling Software

PLEXOS Study of the Italian Power System and Market in the Medium-Term: Realities and Expectations of Renewables Integration One of the main developments of the last few years on the Italian power market has been the significant increase of renewable capacity in the form of wind and solar power plants. Using a PLEXOS dataset based on data available from Terna and various utilities, we have modeled the Italian power market considering the six geographical zones and created the medium term expected scenarios from the Terna information available for 2012 and the published 2013 grid development plan.
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Adjustable Speed Pumped-Storage Hydro-Generator (PSH) Evaluation by PLEXOS Energy Exemplar is engaged in this project sponsored by the Department of Energy through Argonne National Laboratory to perform the power system operation simulation to evaluate the fixed-speed pumped-storage hydro-generators (FS PSH) and the adjustable-speed pumped-storage hydro-generators (AS PSH) in the areas of: quantifying the value of the FS and AS PSHs under different market conditions and for different levels of variable renewable generation (wind and solar) in the system; and providing information about the full range of benefits and value of PSH and CH plants and recommendations for appropriate business models for future PSH projects.
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North of Delta Off-Stream Storage (NODOS) Project Benefits Study The economic viability study of the proposed North-of-Delta Off-Stream storage (NODOS) pump storage project was originally completed by the United States Bureau of Reclamation (USBR) and the California Department of Water Resources (CDWR) in early 2013. This document summarizes an update to that study performed for USBR, by Energy Exemplar (EE) and Pinnacle Consulting (Pinnacle), consulting firms specializing in the evaluation of power generation assets in California and in the Western Electricity Coordinating Council (WECC) system, which includes the provinces of Alberta and British Columbia, the northern portion of Baja California, Mexico, and all or portions of 14 Western states in the United States including California.
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PLEXOS Integrated Energy Model Brochure PLEXOS® Integrated Energy Model (PLEXOS Desktop Edition) is a proven power market simulation software that uses cutting-edge mathematical programming and stochastic optimisation techniques, combined with the latest user-interface and data handling approaches to provide the most comprehensive, easy-to-use and robust analytical framework for power market modellers.
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Evaluation of the Impact of Including Start Costs in SEM 2020 Wind-Integration Scenarios Base load thermal unit start costs include energy (fuel and CO2) and non-energy (wear and tear, extra O&M) components. Most wind integration studies have ignored non-energy components. This research examines the effect of including non-energy start costs on scheduling.
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Irish and British Historical Electricity Prices and Implications for the Future This paper compares retail and wholesale electricity prices in SEM, the market of Ireland, and BETTA in Great Britain. Estimated wholesale costs are much lower in BETTA. We show that this is mostly because the wholesale price in BETTA is set too low to cover generation costs, although it is compensated by large retail margins. The substantial need for new investment in generation in Great Britain suggests that returns to generators will have to increase. Developing a market mechanism to compensate generators fairly while simultaneously reducing retail revenue will help in achieving this goal.
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A Methodology to Analyse the Impact of Offshore Wind Forecasting Error on Electricity Markets This paper presents a methodology to investigate the impacts of better offshore wind forecasting on the operation and management of the single wholesale electricity market in the Republic of Ireland and Northern Ireland using PLEXOS for Power Systems.
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An Assessment of the Impact of Irish Electric Vehicles Target on 2020 Wholesale Electricity Prices The Irish Government has set a target that 10% of all vehicles in its transport fleet are to be powered by electricity by 2020 as part of its strategy to deliver the 10% RES-T target. This paper investigates what impacts on the power system and electricity market in Ireland the electrification of 10% of the transport fleet will have.

By Mari Tamm.
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Reduced Network Modeling of WECC as a Market Design Prototype California’s administration, legislature, and energy regulators have adopted aggressive targets for renewable energy, which will result in profound changes in markets and system operations as the resource portfolio shifts from heavy reliance on natural gas as a fuel for electric generation to intermittent, often remote resources. As part of determining workable modeling approaches as changes in market design are considered, this paper examines the necessary level of detail for modeling unit commitment.
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Recognition of Extended Dispatch Horizons in California’s Energy Markets Effective in 2009, the California ISO launched a new market structure that combines advanced unit commitment and dispatch processes with recognition of physical characteristics of the transmission system and generation resources. California’s upcoming implementation of aggressive targets for renewable energy will result in new, profound changes in markets and system operations. The CAISO is responding by making additional improvements in its unit commitment processes.
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Power System Optimization by Increased Flexibility Great amounts of renewable energy are installed into power systems at state, regional and national level, often due to fulfill legislated mandates or renewable portfolio standards (RPS). While renewable energy is a means for reducing reliance on fossil fuels and decreasing greenhouse gas emissions, it is increasingly evident that there is need for flexible thermal fleet to help balance the renewables. The primary fuel considered for new builds is natural gas, and the default technology to meet capacity and flexibility needs is gas turbines in simple or combined cycle. In this work we show the substantial system benefits of increased flexibility and improved dynamic dispatch capability. This is achieved by exchanging traditional gas turbine based plants in the planning process to gas-fired combustion engine plants.
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Forcasting the Long-Term Emissions Intensity Factor for Electricity Markets: An Australian Case Study Improvements in emissions intensity via technological innovation will enable the pathway to reductions in greenhouse gas emissions, which in turn will enhance our chances of avoiding significant changes in the environment. To avoid massive structural changes to our economy and societal dislocation due to a significantly more variable and an even hostile climate, a methodological framework for establishing the true emissions intensity of electricity production is required.
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Modeling and Simulation of Advanced Pumped-Storage Hydropower Technologies and their Contributions to the Power System With the larger penetration of variable renewable energy resources, the role of energy storage in the power system is becoming increasingly important. The flexibility of operation of hydro and pumped-storage power plants and the variety of ancillary services that they provide to the grid enable better utilization of variable renewable resources and more efficient and reliable operation of the entire power system. The US Department of Energy’s Water Power Program has funded a recent study to enhance the modeling and simulation of advanced pumped-storage hydropower (PSH) technologies and examine the value of different services and contributions that they can provide to the power system.
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Incorporating Flexibility in Utility Resource Planning The trend of increasingly variable net load is characteristic of all power systems with increasing penetration of wind and solar energy. As the amount of renewable energy increases, decreasing minimum net loads and increasing net load ramps require more frequent starts and stops, ramps and cycling, all of which impose costs and stress on the dispatchable generation fleet. Operational flexibility is needed to cope with varying net load.
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Feasibility of Small Modular Nuclear Reactors for Ireland Electricity generation in Ireland contributes to almost a quarter of Ireland's overall greenhouse gas emissions and at the moment Ireland is the most import dependent country in Europe. In future markets Ireland's electricity generation will consist of a large supply coming from renewable sources. However, these sources are variable and still require a base load supply from a power plant to meet demand for the entire year.
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Energy Storage Opportunities and Challenges Judging solely from the number of published reports, interest in energy storage has exploded in the last few years. The new interest appears to stem from the rapid development of variable renewable energy resources, and the perceived need for storage to accommodate the variable nature of these new resources. The need for balancing services, rapid generation ramping, and moving energy from times of excess to times of high demand are expected to increase with high levels of wind and solar energy penetration - exactly the types of services that energy storage can provide.
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Examination of Potential Benefits of an Energy Imbalance Market in the Western Interconnection In the Western Interconnection, there is significant interest in improving approaches to wide-area coordinated operations of the bulk electric power system, in part because of the increasing penetration of variable generation.
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Gas and Power Assets: Management and Portfolio Optimisation with PLEXOS PLEXOS® is a MILP-based next-generation energy markets/systems simulation and optimization software that uses mathematical programming, optimisation and stochastic techniques.
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Generation, Transmission and Nat Gas Network Co-Optimizations PLEXOS is a proven power and natural gas market simulation tool that uses mathematical programming, optimisation and stochastic techniques (MIP, LP, SO).
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Energy Forecasts for Ireland to 2020 Forecasting in the current economic climate is a challenging process. Projections for economic growth, which are the key drivers behind our energy demand, are being re-defined more frequently than has been the case historically. Given the link between these energy forecasts and macro-economic trends such as future expected annual changes in GNP, population, new vehicle sales, new house builds and future energy price projections, using the most up to date data sources has been a focus of this exercise.
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The Effectiveness of Energy Storage to Reduce Peak Demand on the Australian National Electricity Market The energy sector has forecasted significant increases in demand over the next decade with the general belief that this will be serviced by increased renewable energy deployment within the grid. Most of this will be within distribution rather than transmission networks and as a result we will see rapid developments within smart grid technologies.
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Derivation of Robust Storage Targets for Large-Scale Pumped Hydro Energy Storage Using PLEXOS This paper examines the modelling of large-scale pumped hydro energy storage in future power systems where variable generation, primarily in the form of wind generation, is the dominant source of power generation. It is shown that current deterministic modelling techniques do not give a correct valuation to pumped hydro storage and can in cases overvalue the resource.
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Energy Exemplar Explores Current Impacts on Kenya's Utility Distribution The electrical power sector in Africa is rapidly evolving as countries adopt novel and disruptive approaches/technologies to fulfil electrification goals and stimulate private investment in order to ensure supply adequacy and grow their economies. This all while remaining cognisant of the requirement for a sustainable sector via combinations of energy efficiency (EE), solar water heater (SWH) deployments, frameworks for net metering and Feed-in Tariffs (FITs) for embedded generation, utility scale renewables projects and Demand Side Participation (DSP). The consequence of these novel and disruptive approaches/technologies means that the unidirectional power-flow through distribution utilities and municipalities (from bulk suppliers to off-takers) is changing. As a result, reduced energy sales are expected, while still having to cover fixed costs including components of bulk purchase costs from existing suppliers, overheads as well as network investment and maintenance costs. This paper focusses on the impact of the abovementioned novel and disruptive approaches/technologies, via a case study on the main distribution utility in Kenya, Kenya Power and Lighting Company (KPLC).
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Delivering a Competitive Australian Power System Australia’s abundant supply of coal has underpinned its power system. Competing countries have used a variety of energy resources, which sees many of them now equipped with resilient power systems to provide future electrical power. This paper considers the implication of possible scenarios for the Australian power system in 2035.
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Grid and Power System Research at CSU The Engines & Energy Conversion Laboratory has a 20-year history of developing energy solutions. Founded in the Department of Mechanical Engineering at Colorado State University, the EECL has grown to become one of the largest interdisciplinary programs in energy in the country.
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Benefits of Chronological Optimization in Capacity Planning for Electricity Markets Long-term capacity expansion planning is constrained by computing performance; hence the load duration curve (LDC) approach is commonly adopted for such long-term models. In this paper chronology is retained in deterministic modelling of long-term investment decisions along with an accurate production cost model co-optimization that accounts for inter-temporal constraints of thermal plants. The South Australian system has been modelled in the PLEXOS® simulation software.
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Network Constraints for Competing Renewable Power Plants in a Resource Rich Area Significant growth in installed capacity of solar PV and wind generation has taken place globally with the largest contributors being the USA, Europe (mostly Germany) and China. Projections for solar PV and wind generation capacity seem to indicate that this growth will continue into the future.
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Australian Power: Can Renewable Technologies Change the Dominant Industry View? The Australian government is committed to the development of its coal seam gas resources for export to lucrative world markets and to transition domestic power generation to greater resilience by moving away from a reliance on coal to lower-emissions intensive gas. Using a commercially available modelling package, PLEXOS, we model what a transition to gas fired generation in the year 2035 would deliver and compare that to a transition to power from renewable technologies.
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Analysing the Effects of Future Generation and Grid Investments on the Spanish Power Market, with Large-Scale Wind Integration, Using PLEXOS® for Power Systems The scope of this paper is to present the results of a wind integration case study that analyses and compares the effects of the future generation and grid investments and their operations on power market prices, congestion, ancillary service requirements and generation mix using the power market simulation and analysis software PLEXOS® for Power Systems.
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An Economic Evaluation of the Potential for Distributed Energy in Australia We present here economic findings from a major study by Australia’s Commonwealth Scientific and Industrial Research Organisation (CSIRO) on the value of distributed energy technologies (DE; collectively demand management, energy efficiency and distributed generation) for reducing green-house gas emissions from Australia’s energy sector.
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AEMO Releases PLEXOS NEM Dataset The Australian Energy Market Operator ('AEMO') operates the wholesale interconnected electricity market in the eastern states, known as the National Electricity Market, or NEM. For the National Transmission Network Development Plan (NTNDP) 2012, AEMO released a copy of 2012 NTNDP Database in PLEXOS. PLEXOS was used to solve the Least-Cost Expansion Modelling requirements of their analysis.
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How Much Wind Energy Will be Curtailed on the 2020 Irish Power System? This paper describes a model of the 2020 Irish electricity system which was developed and solved in a mixed integer programming, unit commitment and economic dispatch tool called PLEXOS. The model includes all generators on the island of Ireland, a simplified representation of the neighbouring British system including proposed wind capacity and interconnectors between the two systems.
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Energy Exemplar Products and Services - Leading the Field in Energy Market Modelling PLEXOS® Integrated Energy Model (PLEXOS) is proven simulation software that uses cutting-edge mathematical programming and stochastic optimisation techniques combined with the latest data handling techniques, to provide a robust analytical framework for power market modellers. Since its first release in 2000 PLEXOS has emerged as the integrated power market simulation tool of choice, with a customer base spanning the globe and including many of the world’s largest and most sophisticated utilities and system operators.

This paper provides insights into Energy Exemplar’s products and services including, Integrated Energy Modelling, Gas Modelling, Distributed Computing Solutions, Consulting, Training, Datasets, Customisation and more.
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Fossil Fuel and CO² Emissions Savings on a High Renewable Electricity System – A Single Year Case Study for Ireland By J.M. Clancy, F.Gaffney, J.P.Deane, J.Curtis, B.P.ÓGallachóir.
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Energy Exemplar - Leading the Field in Energy Market Modelling PLEXOS® Integrated Energy Model (PLEXOS) is proven simulation software that uses cutting-edge mathematical programming and stochastic optimisation techniques combined with the latest data handling techniques, to provide a robust analytical framework for power market-modellers. PLEXOS meets the demands of market participants, planners, investors, regulators and analysts with a comprehensive range of features delivered through an easy-to-use interface and powerful simulation engine.
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Bridging the Power Gap in Africa: Testing Options to Manage Constrained Short to Medium Term System Operations Jarrad G. Wright PrEng MScEng Senior Consultant Energy Exemplar Africa (Pty) Ltd South Africa.
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Natural Gas and Power Systems/Markets Combined Modelling and Co-Optimisation in PLEXOS With the incorporation of the fully integrated Gas Modelling Classes in PLEXOS, complex layouts and mixed gas and electricity system topologies, of a large scale, can be modelled.
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Electrical Energy Storage to Make Wind and Solar PV Resources Disptatchable The transitioning to a lower carbon emissions path in most regions of the world has driven significant investments in alternative renewable sources of electrical energy with particular focus on solar photovoltaic (PV) and wind technologies. The typical argument against these technologies are issues related to their variability and unpredictability and management thereof. This paper attempts to show the value that electrical energy storage could add to a power system that includes a share of solar PV and wind. More specifically, the ability of energy storage to make these intermittent resources dispatchable.
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Renewable Generation Integration Study by PLEXOS This article first reviews the uncertainty and variability of the renewable generation; then briefly describes the approach to prepare the system for the renewable generation; third, the EIM is presented for the ramp capacity sharing between the Balancing Authority Areas (BAA) to improve the system readiness for the greater renewable generation penetration.
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Reliability Analysis using PLEXOS® The PLEXOS® simulator is a powerful tool for performing reliability studies on electric power systems. The simulator can calculate the standard metrics of LOLP, LOLE, EDNS and EENS from the PASA simulation phase using convolution. However, PLEXOS can also use the detailed chronological simulation of ST Schedule to produce the same metrics via Monte Carlo.
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Modelling and Quantifying the Benefit of Gas and Electric System Coordination The trend of the future electricity supply is going towards a direction with higher penetration of renewables. For the traditional fossil fuel fired generating resources, we will see the generation greatly shift from coal fired generating resources to gas fired, due to the apparently harsh environmental regulations put onto the coal plants. This trend makes the entire electricity supply more environmentally friendly, but it is also creating more pressure on the gas supply. While shale gas development solved the puzzle on the gas production side, gas fired generators still rely on the gas pipeline infrastructure and system awareness between gas and electric systems to ensure the gas supply whenever needed. That is especially true in an extreme event like Polar Vortex, when gas demands are extremely high in all sectors. Currently, the total gas consumption from the electric generators is around one third of the total gas consumption in the US, as shown in Fig. 1. With the electric power industry moving towards more gas fired generators, this percentage will keep going up, which means more interdependent gas and the electricity markets and therefore a strong need for studying both systems together. Words by Nan Zhang and Yuan Gao.
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Portfolio Optimisation by PLEXOS PLEXOS solves Portfolio Optimisation problem using the Security Constrained Unit Commitment (SCUC) and Economic Dispatch (ED) algorithm. This algorithm makes use of Mixed Integer Programming (MIP) to minimize a cost function subject to all operational constraints.
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Addressing the Challenges of US Electricity and Gas Sector using PLEXOS® Integrated Energy Model In the past, the US electricity markets were charactersied by vertically integrated and monopolistic electric utilities. These utility companies owned the generation, transmission and distribution networks and electric rates were reviewed and approved by public utility comissions or public boards. However, in the past couple of decades, these vertically integrated structures have been replaced by regional wholesale markets.
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Hydro Optimisation in PLEXOS Power systems having both hydro-electric and thermal generation require a systematic and coordinated approach in order to determine an optimal policy for dam operations. The goal of a hydro-thermal planning tool is to minimise the expected thermal costs along the simulation period. These types of problems generally require stochastic analysis to deal with inflow uncertainty. This can increase the mathematical size of the problem and can easily become cumbersome to solve.
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Assessing Electrical Transmission Constraints for the Southern African Power Pool (SAPP) in PLEXOS The Southern African Power Pool (SAPP) was formed in 1995 to promote trading of electricity between nations in the Southern African Development Community (SADC). Initially, the national utilities of each SADC country were included as SAPP members to co-operatively trade electricity (via bilateral contracts and a Short Term Energy market (STEM)). The STEM was replaced in 2009 with a competitive trading market (the Day Ahead Market (DAM)) and inclusion of Independent Power Producers (IPPs) and Independent Transmission Companies (ITCs) was late allowed.
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Hydro Cascade & Storage Optimisation Utilising PLEXOS Energy Exemplar support staff analyse the current renewable situation in Europe. Facing challenges in modelling hydro assets compared to conventional generation, PLEXOS Hydro Modelling can explore different approaches for short versus Long term forecasting.
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Flexible power generation and interconnection capacity needs of the Italian power system using PLEXOS® LT plan One of the main developments of the last few years on the Italian power market has been the significant increase of renewable capacity in the form of wind and solar power plants. Using a PLEXOS® dataset based on data available from Terna and various utilities, we have modelled the Italian power market through the six geographical zones and considered the medium term expected scenarios.
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Analysing the Demand – Supply Dynamics of the Australian South Eastern Gas Market Using PLEXOS® These are interesting times for the Eastern Australian gas market with the impending LNG play coming online. The previously stable and long-term contract market for domestic gas supply on the east coast will be subject to market forces that are in part determined on the global stage. Exactly how the market will respond to these changes is not yet clear, however, one important question on the mind of every market participant is: “do we have enough gas to meet medium to long term domestic demand?”
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Different Types of Electricity Markets Modelled Using PLEXOS® Integrated Energy Model – The UK Balancing Market Example Electricity is a commodity that cannot be stored economically in large quantities. Therefore, generation must equal demand plus energy lost as heat when electricity is transported (transmission / grid losses) on an instantaneous basis. Otherwise the grid frequency starts deviating from its reference value, which can result in a system collapse. The design of electricity markets is adapted to deal with this particular property of electricity. Different types of electricity markets are arranged in a sequential order, starting years before the actual delivery and ending after the actual delivery.
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Managing Risks and Optimising an Energy Portfolio with PLEXOS® Energy markets inherently exhibit far greater risk compared to traditional financial markets such as equities and bonds. Energy commodities in general display differentiating characteristics when compared to other asset classes which make conventional approaches to valuation, hedging and risk management a challenge for even the talented of risk managers. Market fundamentals play a larger impact with both supply and demand factors causing price behaviour to be very uncertain and at times volatile when compared to the price behaviour of other asset classes. Weather, infrastructure failure and fuel shortages coupled with rapidly changing demand for electricity on a daily or even hourly time scales make accurate price forecasting a constant concern. This white paper aims at analysing some of the quantifiable risks facing integrated energy companies and how fundamental optimisation software coupled with systematic and robust analysis can help decision makers manage risk and optimise their energy portfolio to retain their competitive advantage.
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Analysing the Effect of LNG Exports on the Australian East-Coast Gas Market Capacity Using PLEXOS® These are interesting times for the eastern Australian gas market with the commencement of LNG exports from Queensland. The previously stable and long-term contract market for domestic gas supply on the east coast will be subject to market forces that are in part determined on the global stage.
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Consulting Services To help customers get the maximum value from PLEXOS, Energy Exemplar offers a variety of consulting services that are tailored to meet clients’ individual needs and can assist customers with software integration, database development, model design, and algorithm customisations. In addition, Energy Exemplar can provide on-site training and support.
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Incorporating the Capacity Market and Clean Power Plan into Resource Planning Resource Planning or Capacity Expansion is a process to find the best economical combination of the new resources to be built in the next 10 to 20 years to meet the anticipated load growth. There are generally two types of algorithms to achieve this.
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Intelligent Grid - A Value Proposition for Distributed Energy in Australia In response to climate change, Australia is developing a suite of options aimed at delivering more efficient and sustainable low emissions energy. One solution is distributed energy, which provides solutions near the point of use rather than at remote locations.
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Evaluating the Operational and Market Risks for Complex Energy Portfolios and New Energy Investments Optimisation in Europe employing the Power of Hybrid Integrated Modelling Today, it is widely accepted that the Global Community is facing significant challenges in the energy sector that stem from the combination of serious related environmental challenges and the emergence of a big variety of new cleaner (Renewables) and more efficient energy technologies during the last decade. The emergence of these new energy technologies though, is also accompanied by significant uncertainties on how they should be best integrated into existing energy systems, but also on how they should be best handled within the context of liberalised Energy Markets and Free Competition in the energy sector.
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GHG and Pollution Modeling in PLEXOS® Many studies require cost and benefits analysis of pollutants and GHG’s where this white paper we discuss emission modeling and analysis of systems.
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Energy Efficiency and Demand-Response in PLEXOS® The methodology for data mining is based on disaggregation at regional level followed by categorisation using classical clustering approach. Sources for historical and current values are prioritised by experience, state regulator publications, state-of-the-art revision. Trends will be created based on back casting and are subject to stakeholder review. Many regional system operators collect and use energy efficiency and demand response data in system studies. As well consultants, research centers and other entities regularly collect and tabulate energy efficiency and demand response data.
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Integration of RES in Croatian Power System - Open Issues for Hydro (Past), Wind (Current) and Solar (Future) Mix This paper provides information on the Croatian power system, outlines the potential and development of RES projects, explores grid integration challenges, and offers conclusions based on the presented information.
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PLEXOS® Capacity Expansion Planning for Integrated Resource Planning The term 'capacity expansion' refers to the problem of finding the optimal combination of generation new builds and retirements and transmission upgrades (and retirements) that minimises the net present value of the total costs of the system over a long-term planning horizon. PLEXOS® simultaneously solves generation and transmission capacity expansion problem and a dispatch problem from a central planning, long-term perspective.
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Stochastic Optimisation for Simulation of Electricity Markets For a Day-ahead Unit Commitment (UC), System operator must make certain commitment decisions 'now' e.g. for slow start thermal plant; and cannot perfectly anticipate certain variables such as load, wind, solar generation, or random outages.
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Heywood Interconnector Upgrade RIT-T The 2010 SA Interconnector Study investigated feasibility of transmission options that would provide additional support for South Australia at times of peak demand, and allow further development of South Australia’s renewable energy resources by increasing export capacity.
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Inter-Island HVDC Pole 1 Replacement Investigation Transpower employed McLennan Magasanik Associates (MMA) to undertake an independent GIT analysis of the short-listed HVDC Pole 1 replacement options, using PLEXOS, an integrated generation expansion planning and dispatch model. Four reports detailing this analysis and its results are presented within this document.
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Evaluation of Power System Flexibility As the penetration of variable renewable generation increases in power systems worldwide, planning for the effects of variability will become more important.
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Modelling Future Scenarios in the North Western European Energy Market Summary of the project: to collect technical data on all electrical power stations in seven countries; develop a 2020 model of electricity/ power system in North West Europe on PLEXOS©; and analyse various energy scenarios, and the impact on the European network.
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Energy Exemplar – PLEXOS® Integrated Energy Model Applications In the past, the US electricity markets were characterised by vertically integrated and monopolistic electric utilities. These utility companies owned the generation, transmission and distribution networks and electric rates were reviewed and approved by public utility commissions or public boards. However, in the past couple of decades, these vertically integrated structures have been replaced by regional wholesale markets.
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Integration of Wind and Solar Energy in the California Power System: Results from Simulations of a 20% Renewable Portfolio Standard California’s existing Renewables Portfolio Standard (RPS) requires utilities to supply 20% of all consumed electricity from eligible renewable resources by 2010. Compliance with the RPS is now anticipated in the 2011-2012 timeframe, with the exact timing dependent on load growth, contract implementation, and other factors (CPUC 2010a). The majority of new renewable generation capacity needed to realize this goal will come from additional variable energy resources, primarily wind and solar technologies.
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Energy Exemplar European Datasets Overview Energy Exemplar datasets are covered and provided under a Dataset (End User Licence) Agreement. Energy Exemplar can provide consultancy services for a new implementation; consultancy services to support a client doing their own implementation; or consulting (modelling) support as needed.
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Gas Power Plant Fuel Requirements and Uncertainty Considering Increasing Renewables Penetration With recent discoveries of large proven gas reserves off the coasts of Mozambique and Tanzania coupled with the already flourishing gas industries in West and North Africa, there is little doubt that gas-fired power plants have a major role to play in the African energy mix across the continent.
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Estimating Energy and Ancillary Service Benefits of Energy Storage in the NEM with a High Penetration of Variable Renewables A thesis submitted in partial fulfilment of the requirements for the award of the degree Bachelor of Electrical Engineering from Queensland University of Technology. By Radhinal Djan.
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Elegant Solutions to Power and Gas Sector Challenges There are all kinds of uncertainty today in the natural gas and electric sectors. For example, with the advent of power markets and the evolution of market mechanisms, both financial and physical positions have uncertainty, which requires quantification to better plan for the future.
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Assessing Power System Security. A Framework and a Multi Model Approach This paper presents a methodological framework using a multi model approach to assess power system security. System security is viewed here as a multidimensional systemic property of the entire energy system. The paper shows that the different dimensions of a secure energy system are correlated, and hence their behaviour cannot be explained solely by a understanding of the individual dimensions or by system elements in isolation.
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PLEXOS® Integrated Energy Modelling Around the Globe European energy markets’ integration challenges: European energy markets are in a crossroad, being faced with a long list of significant challenges that are mostly lying ahead. An internally integrated Pan-European market that really works as a single, efficient, competitive market and that provides affordable energy to all EU member states and European consumers is still the main aim.
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Bridging the Power Gap in Africa: Testing Options to Manage Constrained Short to Medium Term System Operations This paper presents an analytical assessment of options for system operators to use to stop/reduce what seems like a downward spiral of system adequacy in the short to medium term. A model is developed which assesses a number of supply and demand side options for system operators to use to help weather the storm in the short to medium term.
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Modeling and Analysis of Value of Advanced Pumped Storage Hydropower in the United States This report is the last of seven reports developed during the U.S. Department of Energy (DOE) study on the "Modeling and Analysis of Value of Advanced Pumped Storage Hydropower in the United States." This report is the Final Project Report and provides an overview of all activities and work performed by the project team, as well as they key results and findings of the various analyses performed during the study.
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