scholarly journals Come Together—The Development of Swedish Energy Communities

2019 ◽  
Vol 11 (4) ◽  
pp. 1056 ◽  
Author(s):  
Dick Magnusson ◽  
Jenny Palm
Keyword(s):  
Rural Community ◽  
Power Plants ◽  
Energy Transition ◽  
Professional Organizations ◽  
Institutional Setting ◽  
Small Scale ◽  
Hydroelectric Power ◽  
Solar Photovoltaics ◽  
Grassroots Innovations ◽  
The Uk

Community energy (CE) and grassroots innovations have been widely studied in recent years, especially in the UK, Germany, and the Netherlands, but very little focus has been placed on Sweden. This paper describes and analyses the development and present state of several types of community energy initiatives in Sweden. The methodology uses interviews, document studies, analysis of previous studies, and website analysis. The results show that fewer initiatives have been taken in Sweden than in other countries, but that even with a rather ‘hostile’ institutional setting CE has emerged as a phenomenon. Wind cooperatives are the most common form of initiative, with solar photovoltaics cooperatives and eco-villages also prominent. The various types of initiatives differ considerably, from well-organized wind cooperatives that have grown into professional organizations to small-scale hydroelectric power plants owned by a rural community. The initiatives may have modest impact on the energy transition in quantitative terms, but they are crucial in knowledge sharing and as inspirations for future initiatives.

A Perspective on Energy Storage and Other Means to Integrate Increasing Shares of Renewable Electricity Generation

Green ◽  
2014 ◽  
Vol 4 (1-6) ◽  
Author(s):  
Arndt Neuhaus ◽  
Frank-Detlef Drake ◽  
Gunnar Hoffmann ◽  
Friedrich Schulte
Keyword(s):  
Energy Storage ◽  
Power Plants ◽  
Large Scale ◽  
Distributed Storage ◽  
Renewable Energy Sources ◽  
Energy Transition ◽  
System Stability ◽  
Small Scale ◽  
Specific Class ◽  
High Level

AbstractThe transition to a sustainable electricity supply from renewable energy sources (RES) imposes major technical and economic challenges upon market players and the legislator. In particular the rapid growth of volatile wind power and photovoltaic generation requires a high level of flexibility of the entire electricity system, therefore major investments in infrastructures are needed to maintain system stability. This raises the important question about the role that central large-scale energy storage and/or small-scale distributed storage (“energy storage at home”) are going to play in the energy transition. Economic analyses show that the importance of energy storage is going to be rather limited in the medium term. Especially competing options like intelligent grid extension and flexible operation of power plants are expected to remain favourable. Nonetheless additional storage capacities are required if the share of RES substantially exceeds 50% in the long term. Due to the fundamental significance of energy storages, R&D considers a broad variety of types each suitable for a specific class of application.

scholarly journals A Novel Method for Analyzing Highly Renewable and Sector-coupled Sub-national Energy Systems–Case Study of Schleswig-Holstein

2021 ◽  
Author(s):  
Md. Nasimul Islam Maruf
Keyword(s):  
Energy Demand ◽  
Power Plants ◽  
Energy Systems ◽  
Energy Transition ◽  
Heat Pumps ◽  
Offshore Wind ◽  
Small Scale ◽  
Ground Source Heat Pumps ◽  
Feasible Solutions

The energy transition requires integration of different energy carriers, including electricity, heat, and transport sectors. Energy modeling methods and tools are essential to provide a clear insight into the energy transition. However, the methodologies often overlook the details of small-scale energy systems. The study states an innovative approach to facilitate sub-national energy systems with 100% renewable penetration and sectoral integration. An optimization model, OSeEM-SN, is developed under the Oemof framework. The model is validated using the case study of Schleswig-Holstein. The study assumes three scenarios representing 25%, 50%, and 100% of the total available biomass potentials. OSeEM-SN reaches feasible solutions without additional offshore wind investment, indicating that they can be reserved for supplying other states’ energy demand. The annual investment cost varies between 1.02 bn – 1.44 bn €/yr for the three scenarios. The electricity generation decreases by 17%, indicating that with high biomass-based combined heat and power plants, the curtailment from other renewable plants can be decreased. Ground source heat pumps dominate the heat mix; however, their installation decreases by 28% as the biomass penetrates fully into the energy mix. The validation confirms OSeEM-SN as a beneficial tool to examine different scenarios for sub-national energy systems.

scholarly journals A Novel Method for Analyzing Highly Renewable and Sector-Coupled Subnational Energy Systems—Case Study of Schleswig-Holstein

2021 ◽  
Vol 13 (7) ◽  
pp. 3852
Author(s):  
Md. Nasimul Islam Maruf
Keyword(s):  
Energy Demand ◽  
Power Plants ◽  
Energy Systems ◽  
Energy Transition ◽  
Energy Modeling ◽  
Offshore Wind ◽  
Small Scale ◽  
Modeling Framework ◽  
Ground Source Heat Pumps

The energy transition requires an integration of different energy carriers, including electricity, heat, and transport sectors. Energy modeling methods and tools are essential to provide a clear insight into the energy transition. However, the methodologies often overlook the details of small-scale energy systems. The study states an innovative approach to facilitate subnational energy systems with 100% renewable penetration and sectoral integration. An optimization model, the “Open Sector-coupled Energy Model for Subnational Energy Systems” (OSeEM–SN), was developed under the Open Energy Modeling Framework (Oemof). The model is validated using the case study of Schleswig-Holstein. The study assumes three scenarios representing 25%, 50%, and 100% of the total available biomass potentials. OSeEM–SN reaches feasible solutions without additional offshore wind investment, indicating that it can be reserved for supplying other states’ energy demand. The annual investment cost varies between 1.02 and 1.44 bn €/year for the three scenarios. The electricity generation decreases by 17%, indicating that, with high biomass-based combined heat and power plants, the curtailment from other renewable plants can be decreased. Ground source heat pumps dominate the heat mix; however, their installation decreases by 28% as the biomass penetrates fully into the energy mix. The validation confirms OSeEM–SN as a beneficial tool to examine different scenarios for subnational energy systems.

scholarly journals Parametric analysis of gravity Vortex turbines as a low cost renewable energy alternative from low head hydraulic resources

2020 ◽  
Vol XXIII (1) ◽  
pp. 22-28
Author(s):  
Deniz Ünsalan
Keyword(s):  
Wave Energy ◽  
Rural Areas ◽  
Parametric Analysis ◽  
Power Plants ◽  
Large Scale ◽  
Energy Requirement ◽  
Low Cost ◽  
Small Scale ◽  
Hydroelectric Power ◽  
Small Streams

The long existent worldwide trend for large scale hydroelectric power plants, relying on dams are now under severe criticism for the large areas their reservoirs occupy, which are often fertile agricultural areas and sometimes flood cultural heritage sites. However, there are also environment-friendly alternatives for hydroelectric power production, which are capable to obtain energy from small scale streams with relatively low heads. Such smaller scale sources with low cost facilities can be used for electric production by alternative schemes that use small streams, irrigation canals and divertions from rivers, tidal pools, overtopping wave energy converters and urban wastewater. One of the recent types of such plants are the gravity vortex turbines that use the naturally occurring “sink vortex” draining such water. They are highly efficient and able to obtain energy from sources with flow rates as low as 1 m3/s and heads as low as 0.80 m. Such water sources are abundant in most of the rural areas and it is possible to obtain either an important part or the total need of the energy requirement of the nearby communities with such systems. Gravity vortex turbines have low costs due to their simple structure and are easy to maintain. They can also be implemented for overtopping wave energy and tidal energy systems, as well as recovery units of pumped energy storage schemes. The purpose of this paper is to propose relations for the design and parametric analysis to size the relevant parts of the plant- the pool and the turbine. Potential flow is assumed throughout the analysis. Attempts to obtain optimized relations between the relative sizes and rotational speeds for the pool, water source, turbine are made and inputs for preliminary design are obtained.

scholarly journals Design and Construction of Single Phase Radial Flux Permanent Magnet Generators for Pico hydro Scale Power Plants Using Propeller Turbines in Water Pipes

2020 ◽  
Vol 188 ◽  
pp. 00006
Author(s):  
Eko Yohanes Setyawan ◽  
Yusuf Ismail Nakhoda ◽  
Awan Uji Krismanto ◽  
Lalu Mustiadi ◽  
Erkata Yandri ◽  
...  
Keyword(s):  
Power Plant ◽  
Power Plants ◽  
Permanent Magnets ◽  
Water Pressure ◽  
Hydroelectric Power Plant ◽  
Small Scale ◽  
Hydroelectric Power ◽  
Special Profile ◽  
Water Turbine ◽  
Main Components

Pico hydro or a small scale hydroelectric power plant is used as the rotating energy of the generator. Pico hydro is a hydroelectric power plant that has a power of less than 5 kW. Technically, Pico hydro has three main components namely water, turbine and generator. Turbine type propeller reaction has a special profile that causes a decrease in water pressure during the blades. This pressure difference exerts force on the blade so that the runner (rotating part of the turbine) can rotate. Permanent magnets are used to produce magnetic flux. Permanent magnets used are rare-eatrhrod magnet material, neodymium-iron-boron NdFeB with N35 type. The planned generator released is 36.85 V, 500 rpm, 50 hz. This designed water turbine has four blades which cannot change its angle. As for the measurement results produce a voltage of 35.1 V with a manufacturing efficiency of 95 %. Charging the battery voltage must be more than 12 V, therefore the generator must be turned at least 200 rpm with a voltage of 14 V to be used for charging batteries.

scholarly journals Fish consumption on the Amazon: a review of biodiversity, hydropower and food security issues

2019 ◽  
Vol 79 (2) ◽  
pp. 345-357 ◽  
Author(s):  
A. Begossi ◽  
S. V. Salivonchyk ◽  
G. Hallwass ◽  
N. Hanazaki ◽  
P. F. M. Lopes ◽  
...  
Keyword(s):  
Food Security ◽  
Fish Species ◽  
Power Plants ◽  
Biodiversity Loss ◽  
Iucn Red List ◽  
Biological Information ◽  
Small Scale ◽  
Hydroelectric Power ◽  
Protein Food ◽  
Security Issues

Abstract The lack of knowledge about the majority of fish species harvested in Amazonian small-scale fisheries, in association with impacts from hydroelectric power plants, may lead to biodiversity loss and a decrease in the protein food supply for riverine Amazonians. This study uses existing datasets on fisheries and riverine developmental projects to infer effects associated with fish losses where actual data and outcomes are not available. The targeted fish species’ status may be regarded as either threatened or there being no knowledge of their conservation requirements, biology or ecology. Among the 90 Amazonian fish species that are the most important for the diet of the riverine fishers, 78% are not assessed or their biological information is unknown, according to the IUCN Red List. Consequently, the effects created by the thoroughly disregarded trade-off between energy generation and food security in the planning of Amazonian land use have been worsened by the lack of biological and ecological information on fish species.

scholarly journals Participatory Impetus for and Forms of Citizens’ Co-Owned Power Plants: Cases from Higashi-Ohmi, Japan

Energies ◽  
2021 ◽  
Vol 14 (7) ◽  
pp. 1843
Author(s):  
Hui-Tzu Huang ◽  
Rüdiger Glaser
Keyword(s):  
Power Plants ◽  
Poverty Reduction ◽  
Driving Forces ◽  
Energy Transition ◽  
Small Scale ◽  
Local Networks ◽  
Local Participation ◽  
Compound Disaster ◽  
Energy Justice ◽  
Energy Autonomy

Citizen-led local participation is considered the key to a successful energy transition, and citizens’ co-owned power plants are an alternative and representative form of local participation. The extent to which citizens’ co-owned power plants can embody “locality, democracy, participation, energy autonomy, poverty reduction, and energy justice” has led to many controversial discussions. In response to these meaningful questions, this study argues for the focus to return to the impetus and driving forces of local participation in energy. This study proposes six possibilities for the impetus of local energy participation and the types of participation they may create. In the case analysis of the Higashi-Ohmi Model, in addition to the compound disaster of the 11 March 2011 earthquake and the transformation of the Japanese power grid, the driving factors depend on the self-consciousness of local promoters who insist on independence from policy influence. By linking local networks to discuss “local needs,” the residents form an integrated plan of “agricultural self-sufficiency, care system, and energy autonomy.” They promote the overall economic cycle of the region with energy regional energy currency, which inspired other rural forms of citizen energy participation. In addition, the simultaneous development of small-scale local enterprises and the ability of the local government to adjust policies centered on the needs of residents are important conditions for implementing the Higashi-Ohmi model.

scholarly journals A Novel Method for Analyzing 100% Renewable and Sector-coupled Sub-national Energy Systems–Case Study of Schleswig-Holstein

2021 ◽  
Author(s):  
Md. Nasimul Islam Maruf
Keyword(s):  
Energy Demand ◽  
Power Plants ◽  
Energy Systems ◽  
Energy Transition ◽  
Heat Pumps ◽  
Offshore Wind ◽  
Small Scale ◽  
Ground Source Heat Pumps ◽  
Feasible Solutions

The energy transition requires integration of different energy carriers, including electricity, heat, and transport sectors. Energy modeling methods and tools are essential to provide a clear insight into the energy transition. However, the methodologies often overlook the details of small-scale energy systems. The study states an innovative approach to facilitate sub-national energy systems with 100% renewable penetration and sectoral integration. An optimization model, OSeEM-SN, is developed under the Oemof framework. The model is validated using the case study of Schleswig-Holstein. The study assumes three scenarios representing 25%, 50%, and 100% of the total available biomass potentials. OSeEM-SN reaches feasible solutions without additional offshore wind investment, indicating that they can be reserved for supplying other states’ energy demand. The annual investment cost varies between 1.02 bn – 1.44 bn €/yr for the three scenarios. The electricity generation decreases by 17%, indicating that with high biomass-based combined heat and power plants, the curtailment from other renewable plants can be decreased. Ground source heat pumps dominate the heat mix; however, their installation decreases by 28% as the biomass penetrates fully into the energy mix. The validation confirms OSeEM-SN as a beneficial tool to examine different scenarios for sub-national energy systems.

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