Capacity Expansion Pathways for a Wind and Solar Based Power Supply and the Impact of Advanced Technology—A Case Study for Germany

Tafarte, Philip; Eichhorn, Marcus; Thrän, Daniela

doi:10.3390/en12020324

Cited by 22 publications

(15 citation statements)

References 60 publications

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“…One additional option is a capacity mix from wind and solar PV that is endogenously optimized by the VAREO model. The other additional option included in the VAREO scenarios are system-friendly layouts for wind and solar PV [7,21]. Both options have the potential to improve the supply by vRES in comparison to the exogenously determined mix from wind and solar PV and the standard vRES layouts to which the CLASSIC scenarios are restricted.…”

Section: Step 1: Scenario Framework and Variable Renewable Energy Optmentioning

confidence: 99%

“…The system-friendly layouts entail wind turbines with higher full load hours (FLH) designed for low to medium wind resources as well as solar PV installations facing towards east and west for a better temporal coverage of daily consumption patterns by the resulting vRES feed-in. For the modelling of feed-in time series for system-friendly layouts in the VAREO scenarios, it is also referred [6,21]. The general idea of the optimized capacity mix and the system-friendly layouts is to minimize the surplus power production from vRES over the course of the residual load time series, also described as excess energy.…”

Section: Step 1: Scenario Framework and Variable Renewable Energy Optmentioning

confidence: 99%

“…To form the fleet of EESS systems by defining the share of each technology for short and mid-term EESS, the analytic-hierarchy-process (AHP) used in the field of decision finding was adapted from that described in [20][21][22]. The main aspect of this process is the pairwise comparison of the categories and the criteria to each other to identify the most preferable option for specific predefined problems.…”

Section: Step 3: Development Of the Prospective Fleet Of Eessmentioning

confidence: 99%

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Interaction of Electrical Energy Storage, Flexible Bioenergy Plants and System-friendly Renewables in Wind- or Solar PV-dominated Regions

et al. 2020

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Wind and solar PV have become the lowest-cost alternatives for power generation in many countries and are expected to dominate the renewable power supply in many regions of the world. The temporal volatility in power production from these sources leads to new challenges for a stable and secure power supply system. Possible technologies to improve the integration of wind and solar PV are electrical energy storage and the flexible power provision by bioenergy. A third option is the system-friendly layout of wind and solar PV systems and the optimized mix of wind and solar PV capacities. To assess these different options at hand, a case study was conducted covering various scenarios for a regional power supply based on a high share of wind and solar PV. State-of-the-art concepts for all the stated technologies are modelled and a numerical optimization approach is applied on temporally-resolved time series data to identify the potential role of each option and their respective interactions. Power storage was found to be most relevant in solar dominated systems, due to the diurnal generation pattern, whereas bioenergy is more suitably combined with high wind power shares due to the less regular generation pattern. System-friendly wind and solar power can reduce the need for generation capacity and flexible options by fitting generation and demand patterns better.

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Section: Step 1: Scenario Framework and Variable Renewable Energy Optmentioning

confidence: 99%

Section: Step 1: Scenario Framework and Variable Renewable Energy Optmentioning

confidence: 99%

Section: Step 3: Development Of the Prospective Fleet Of Eessmentioning

confidence: 99%

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Interaction of Electrical Energy Storage, Flexible Bioenergy Plants and System-friendly Renewables in Wind- or Solar PV-dominated Regions

et al. 2020

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“…In order to achieve this goal, a significant expansion of renewable energies especially in the electricity sector must be achieved [4]. For the electricity sector, most scenarios assume that a focus will be on the expansion of technologies providing electricity from renewable energy sources (RES-E) such as solar and wind [5][6][7]. Several studies have shown that an improved spatial distribution of RES-E capacities within Europe is helpful to balance the fluctuations of wind flow and solar radiation [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Effects of a Delayed Expansion of Interconnector Capacities in a High RES-E European Electricity System

et al. 2019

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In order to achieve a high renewable share in the electricity system, a significant expansion of cross-border exchange capacities is planned. Historically, the actual expansion of interconnector capacities has significantly lagged behind the planned expansion. This study examines the impact that such continued delays would have when compared to a strong interconnector expansion in an ambitious energy transition scenario. For this purpose, scenarios for the years 2030, 2040, and 2050 are examined using the electricity market model PowerFlex EU. The analysis reveals that both CO2 emissions and variable costs of electricity generation increase if interconnector expansion is delayed. This effect is most significant in the scenario year 2050, where lower connectivity leads roughly to a doubling of both CO2 emissions and variable costs of electricity generation. This increase results from a lower level of European electricity trading, a curtailment of electricity from a renewable energy source (RES-E), and a corresponding higher level of conventional electricity generation. Most notably, in Southern and Central Europe, less interconnection leads to higher use of natural gas power plants since less renewable electricity from Northern Europe can be integrated into the European grid.

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“…Todays most anticipated change in the energy system is the transition to renewable energy generation sources and its expected effect on the elec-tricity grid (Tafarte et al 2019). Due to this ongoing energy transition in Germany, roughly 30% of electricity is gained from renewable sources such as wind, sun and biomass (Öko-Institut e.V.…”

Section: Introductionmentioning

confidence: 99%

A spatially explicit assessment of middle and low voltage grid requirements in Bavaria until 2050

et al. 2019

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The energy transition towards high shares of renewables and the continued urbanization process have a direct and strong impact on the shape and characteristics of the electricity transmission and distribution systems. At the continental and national scale, improved high voltage grids should allow the transmission and balance of electricity from hot-spots of variable renewable energy generation installations to demand centres. At the regional and municipal scale, the medium and low voltage grids should be capable of bringing sufficient electricity to users and allow the integration of distributed renewable generation installations. While data on the transmission systems is widely available, spatial and attribute data of the medium and mainly the low voltage grids are scarce. Additionally, while there are plenty of studies on the requirements of the grid to allow the energy transition, there is very little information on the necessary transformation of the grid due to changes generated by the expected urbanization process. This study relies on a data set that estimates the topology of the medium and low voltage grids of Bavaria (Germany) as well as data from the LUISA territorial modelling platform of the European Commission to calculate key figures of grid requirements depending on population and land use for the current case and the decades to come. Typologies of grid requirements are proposed based on a statistical analysis of population and land use data of each square kilometre of the federal state. These typologies are extrapolated to changes in the structure of settlements that are expected in the years 2030 and 2050. Results are presented using maps with expected absolute values of grid requirements and their temporal changes for each square kilometre of the project area. Grid requirements are expected to increase in cities and to be reduced in most of the rural areas. The largest changes are expected to take place in the suburbs of the major cities. Highlights for public administration, management and planning: • Medium and low voltage grid shapes and lengths are estimated for the entire federal state of Bavaria, Germany. • On average, distribution grid length requirements per person are between 13 and 16 times larger in rural regions than in city centres. • While city centres and suburbs expect an increase in grid requirements, the total grid length of Bavaria is expected to decrease in the near future. • Suburbs of large cities are not only expected to change steadily but also to show the largest changes in grid length requirements until 2050.

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Capacity Expansion Pathways for a Wind and Solar Based Power Supply and the Impact of Advanced Technology—A Case Study for Germany

Cited by 22 publications

References 60 publications

Interaction of Electrical Energy Storage, Flexible Bioenergy Plants and System-friendly Renewables in Wind- or Solar PV-dominated Regions

Interaction of Electrical Energy Storage, Flexible Bioenergy Plants and System-friendly Renewables in Wind- or Solar PV-dominated Regions

Effects of a Delayed Expansion of Interconnector Capacities in a High RES-E European Electricity System

A spatially explicit assessment of middle and low voltage grid requirements in Bavaria until 2050

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