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31-45 of 134 results
A Methodology to Analyse the Impact of Offshore Wind Forecasting Error on Electricity Markets
| By Energy Exemplar
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.
Power Generation > Hydro > White Papers
An Assessment of the Impact of Irish Electric Vehicles Target on 2020 Wholesale Electricity Prices
| By Energy Exemplar
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.

Power Generation > Hydro > White Papers
Reduced Network Modeling of WECC as a Market Design Prototype
| By Energy Exemplar
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.
Power Generation > Hydro > White Papers
Recognition of Extended Dispatch Horizons in California’s Energy Markets
| By Energy Exemplar
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.
Power Generation > Hydro > White Papers
Power System Optimization by Increased Flexibility
| By Energy Exemplar
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.
Power Generation > Hydro > White Papers
Forcasting the Long-Term Emissions Intensity Factor for Electricity Markets: An Australian Case Study
| By Energy Exemplar
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.
Power Generation > Hydro > White Papers
Modeling and Simulation of Advanced Pumped-Storage Hydropower Technologies and their Contributions to the Power System
| By Energy Exemplar
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.
Power Generation > Hydro > White Papers
Incorporating Flexibility in Utility Resource Planning
| By Energy Exemplar
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.
Power Generation > Hydro > White Papers
Feasibility of Small Modular Nuclear Reactors for Ireland
| By Energy Exemplar
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.
Power Generation > Hydro > White Papers
Energy Storage Opportunities and Challenges
| By Energy Exemplar
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.
Power Generation > Hydro > White Papers
Examination of Potential Benefits of an Energy Imbalance Market in the Western Interconnection
| By Energy Exemplar
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.
Power Generation > Hydro > White Papers
Gas and Power Assets: Management and Portfolio Optimisation with PLEXOS
| By Energy Exemplar
PLEXOS® is a MILP-based next-generation energy markets/systems simulation and optimization software that uses mathematical programming, optimisation and stochastic techniques.
Power Generation > Hydro > White Papers
Generation, Transmission and Nat Gas Network Co-Optimizations
| By Energy Exemplar
PLEXOS is a proven power and natural gas market simulation tool that uses mathematical programming, optimisation and stochastic techniques (MIP, LP, SO).
Power Generation > Hydro > White Papers
Energy Forecasts for Ireland to 2020
| By Energy Exemplar
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.
Power Generation > Hydro > White Papers
The Effectiveness of Energy Storage to Reduce Peak Demand on the Australian National Electricity Market
| By Energy Exemplar
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.
Power Generation > Hydro > White Papers
31-45 of 134 results