Can a city reach energy self-sufficiency by means of rooftop photovoltaics? Case study from Poland
Jakub Jurasz , Paweł Dąbek , Pietro E. Campana
AbstractThe process of decarbonising economies has to take place on multiple levels. One of the objectives is to ensure renewables-based energy self-sufficiency of cities. Cities have become home to the majority of the world’s population, and at the same time contribute enormously to environmental pollution. Considering the above, the purposes of this paper are threefold: to formulate a methodology for estimating rooftop photovoltaics (PV) potential in urban areas based on detailed Light Detection And Ranging (LiDAR) data; to calculate the spatial variability of load and photovoltaics energy supply, and thus to distinguish zones with various levels of energy self-sufficiency; and finally, to scrutinise the economic and environmental aspects of such a solution in given conditions. Wrocław, the capital city of the Lower Silesia voivodeship in south-west Poland (Central Europe), was selected as a case study. The city has a population of close to 650,000 and an annual electricity consumption slightly exceeding 2.2 TWh. Industry constitutes 46% of that demand, and households 31%. The results show that up to 850 MWp of rooftop PV can be installed in the city, which has the potential to reduce the electrical energy related emissions by almost 30% and simultaneously to increase the city’s energy self-sufficiency. Although energy storage, in the form of batteries, slightly improves both the autarky and environmental indices, the relation between potential PV generation and load makes them very infrequently useful (mostly in summer) and not economically justified.
|Journal series||Journal of Cleaner Production, ISSN 0959-6526, e-ISSN 1879-1786, (N/A 140 pkt)|
|Publication size in sheets||0.85|
|Keywords in English||Renewable energy, Self-sufficiency, Power system transition, LiDAR, GIS|
|ASJC Classification||; ; ;|
|Internal identifier||69019; PX-5e1f0944d5de7b1be2879dd7|
|License||Journal (articles only); published final; ; with publication|
|Score||= 140.0, 29-05-2020, ArticleFromJournal|
|Publication indicators||= 1; = 0; : 2018 = 2.308; : 2018 = 6.395 (2) - 2018=7.051 (5)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.