Renewable Energy

RESPONSES OF AGRICULTURAL BIOENERGY PRODUCTION IN BRANDENBURG TO ECOLOGICAL, ECONOMIC AND LEGAL CHANGES: AN APPLICATION OF …

by Melf-Hinrich Ehlers

FARMERS'REASONS FOR ENGAGING IN BIOENERGY UTILISATION

by Melf-Hinrich Ehlers

Carbon Lock-Out: Advancing Renewable Energy Policy in Europe

by Melf-Hinrich Ehlers

co-authored with Paul Lehmann, Felix Creutzig, Nele Friedrichsen, Clemens Heuson, Lion Hirth and Robert Pietzcker

As part of its climate strategy, the EU aims at increasing the share of electricity from renewable energy sources... more As part of its climate strategy, the EU aims at increasing the share of electricity from renewable energy sources (RES-E) in overall electricity generation. Attaining this target poses a considerable challenge as the electricity sector is “locked” into a carbon-intensive system, which hampers the adoption of RES-E technologies. Electricity generation, transmission and distribution grids as well as storage and demand response are subject to important path dependences, which put existing, non-renewable energy sources at an advantage. This paper examines how an EU framework for RES-E support policies should be designed to facilitate a carbon lock-out. For this purpose, we specify the major technological, economic and institutional barriers to RES-E. For each of the barriers, a policy review is carried out which assesses the performance of existing policy instruments and identifies needs for reform. The review reveals several shortcomings: while policies targeting generation are widely in place, measures to address barriers associated with electricity grids, storage and demand are still in their infancy and have to be extended. Moreover, the implementation of policies has been fragmented across EU Member States. In this respect, national policies should be embedded into an integrated EU-wide planning of the RES-E system with overarching energy scenarios and partially harmonized policy rules.

Renewable Energy options for reducing GHG emissions in Canada

by Ovo Adagha

In this paper we investigate approaches that could potentially reduce dependence on fossil fuels and mitigate... more In this paper we investigate approaches that could potentially reduce dependence on fossil fuels and mitigate greenhouse gas emissions (GHGs), using existing or growing technologies, for the time-line leading up to 2050. We use a baseline prediction of anticipated emissions up to 2050. To calculate potential emissions reductions, three high energy demand sectors in Canada – transport, heating and electricity – are analyzed. We propose the following mitigation scenarios in each sector: using a 50% algae biofuel blend ratio (AB50) in road and railway transport fuels, applying solar thermal systems for heating in buildings, deploying solar photovoltaic for large-scale electricity generation, and operating hybrid wind-PV’s for mini-grid systems in remote communities. We project that these approaches are feasible within the framework of 40 years.

Renewable Energy from Woody Biomass: Opportunities and Policy options for the Wairarapa Region

by Nigel Taptiklis

Climate change, oil depletion and the financial crisis are issues that can be addressed simultaneously and in an... more Climate change, oil depletion and the financial crisis are issues that can be addressed simultaneously and in an integrated manner. New Zealand has a bounty of land that is marginally economic or unsuited to pasture, that if planted in trees could supply enough energy to meet New Zealand’s heat and liquid fuel requirements. Wood chips and compressed pellets are emerging forms of wood fuel that are price competitive with alternative heating fuels such as diesel, gas, coal and electricity. The Wairarapa region of the southern North Island has considerable land area, a wood processing industry and is close to a main population centre. This study assesses whether there is a sufficient volume of residues in the Wairarapa to support a wood chip or pellet supplier; what barriers a fledgling wood chip or pellet fuel supplier would face; and what policy measures are suited to addressing such barriers. Key findings are that there is considerable uncertainty in quantifying and locating and volume of residue: and that a ‘chicken and egg’ paradox exists, where it would be difficult for a supplier to establish without a market, and difficult for a market to form without a supplier. A significant amount of research and development has been conducted and some policy incentives are in place. However incentives to include key non-market values into consumer decisions are missing. With a detailed regional assessment linking prospective consumers, suppliers and residues to correct the ‘chicken and egg’ paradox, and targeted economic correction of non-market values, a wood pellet plant in the Wairarapa may be a viable start to a bioenergy supply industry in the southern North Island.

Measurement-based load modelling for power supply system design

by Valeria Boscaino

A fuel cell-based hybrid power supply for portable electronics devices

by Valeria Boscaino

Experimental test on a fuel cell-supercapacitor hybrid power supply for a digital still camera

by Valeria Boscaino

A steady state and dynamic fuel cell model including temperature effects.

by Valeria Boscaino

Research on the Model Emulator and Experiment Checkout of the Fuel Cell

by Valeria Boscaino

FPGA implementation of a fuel cell emulator

by Valeria Boscaino

A fuel cell-battery hybrid power supply for portable applications

by Valeria Boscaino

A fuel cell-supercapacitor power supply for portable applications

by Valeria Boscaino

A fuell cell-supercapacitor hybrid power supply for portable applications

by Valeria Boscaino

Fuel cell modelling for power supply systems design

by Valeria Boscaino

A steady-state and dynamic fuel cell model for power electronics design

by Valeria Boscaino

A FUELL CELL-BASED HYBRID POWER SUPPLY FOR PORTABLE ELECTRONICS DEVICES

by Valeria Boscaino

Measurement-based load modelling for power supply systems design

by Valeria Boscaino

A fuel cell model emulator, including temperature effects

by Valeria Boscaino

High Accuracy Modelling of Hybrid Power Supplies

by Valeria Boscaino