Stagnation in Brownfield redevelopment

Purpose of this paper is two-folded. At first it explains the major problems that are causing stagnation in brownfield redevelopment. In addition, these problems given the context of the present multi-actor built environment are becoming more complex to observe. Therefore, this paper suggests also a prospective decisionmaking approach that is the most appropriate to observe and react on the given stagnation problems. Such an approach should be regarded as prescriptive-interactive decision-making approach, a barely established branch. This approach should offer models that have prescriptive as well as an interactive component enabling them to successfully cope with the multi-actor environment. Overall, this paper provides up-to-date insight on the brownfield stagnation by gradually introducing the nowadays major problems and offers a prospective decision-making approach how these problems could be tackled

Modeling the allocation and economic evaluation of PV panels and wind turbines in urban areas

A model for allocating PV panels and wind turbines in urban areas is developed. Firstly, it examines the spatial and technical requirements for the installation of PV panels and wind turbines and then evaluates their economic feasibilities in order to generate the cost effective electricity neutral plan. The model is applied on a residential district in the municipality of Eindhoven, the Netherlands and simulates the electricity generation of allocated renewable energy technologies to satisfy the demand of the area in hourly time-steps over a one year. The allocation model runs for different combinations of PV panels and wind turbines. Accordingly, four scenarios based on the different technical and economic assumptions are conducted and energy and economic indicators are compared. Results show that in the current situation without subsidies, PV panels are not economic, compared with wind turbines, but if appropriate subsidies are devised, they become comparable. The analyses also show that the allocation model help planners and policy makers to examine the influence of different energy policy tools for the promotion of renewable energy technologies in urban areas

Increasing the benefits of stadiums for a municipality through sustainable development : a case study of Stadion Feijenoord

Almost all Dutch municipalities hosting a professional football club are owner of the stadium. The uncertainty of the indirect social and economic benefits of a stadium together with often unhealthy financial situations of professional sports club can result in the vacancy of the stadium. Thus, unmonitored decisions bring along irresponsible high financial risks for these municipalities in relation to the gained benefits. With sustainable (re)development these stadiums can become more beneficial for both the municipality and the main user, a sport club itself. A questionnaire among 31 City Councillors of the Dutch cities Amsterdam, Rotterdam, Eindhoven and Enschede showed that limited financial risks and attracting companies are the most important criteria for public investments in stadium projects. Specific aspects related to sustainability had a lower impact, but the sustainability of the whole project, including long-term planning for example could increase the benefits for municipalities. A case study of Stadion Feijenoord was analysed for this research