Street lighting relates to an entire lighting installation of public or private ownership; its luminous flux is projected over an open space (road, valley, park, ornamental space, etc) of public use. These installations amounted to 4,800,000 light spots in 2010, with an average power of 180 W and 4,200 hours of annual use. These figures accounted for an electric power consumption of 3,630 GWh/year for the whole of Spain.
The number of installations and their electric power consumption has increased in this last decade, hand in hand with the urban development of Spanish municipalities. But at the moment, these street lighting installations are undergoing technological and legal advances which involve a turning point in the consumption trend. Thus, the enactment of the Regulation on energy efficiency in street lighting installations (RD 1890/2008), along with the inrush of LED technology and the hiring of energy service companies by the public administrations are the relevant milestones the last years and which will likely change the installations as we know them today in relation to the lighting of our municipalities and roads.
The pilot experience carried out by IDAE in the Local Councils of Alcorcón, Soto del Real & Teruel to adapt their street lighting installations to the REEIAE provisions through ESCOs stood out the high saving potential for electric power consumption these installations have - of around 45% - its main action fields being the cutback of the high lighting level, above all at small hours; the improvement of the existing lamp posts by replacing them with more efficient ones to reduce their light emission towards other spaces other than the lighting focus (light pollution); and the establishment of regulation and control systems of switching on and off of the installations and in order to reduce flux in early morning schedules. Moreover, this saving potential in economic terms enables, in most cases, to make investments with a simple 6-year payback period, which happens to be ideal for ESCO businesses.
All the above has led IDAE to propose a lighting adaptation programme in Spanish municipalities consisting in prioritizing the execution of the regulatory measures in cities with a population over 25,000 (295 cities and 2,300 GWh/year), to be implemented in 5 years’ time. To do so, municipalities may resort to ESCO services which in turn, will have at their disposal a specific financing line for this activity. This programme will enable to create the conditions to boost this new activity in an indirect way, which happens to be really relevant for the sector’s updating regarding the rest of the Spanish local councils.
Alcorcón Model: Adaptation of the municipality street lighting to the requirements of the REEIAE through an ESCO.
Alcorcón Local Council called a Mixed Tender for Supplies and Services for the management, guidance, comprehensive maintenance and repair of its street lighting installations for a fixed budget of 1,580,000 euros a year (VAT included), on a downward trend and for a 10-year period, aimed at energy service companies.
In parallel, the awarded company, at its own expense, had to adapt all the street lighting installations of Local Council ownership within the scope of the municipality to the prescriptions of the energy efficiency regulations on street lighting installations, as a result of an audit previously carried out by IDAE and the CEI. To do so, the winning company had to submit an Improvement Plan (P4) in its tender, with the description of the investments it got committed to undertake in the municipality and becoming engaged in repaying them at its own expense during the established 10-year period.
The specifications of the tender stated that:
Soto del Real. Proyecto de reforma total de la instalación de alumbrado exterior del municipio por una nueva instalación Todo LED. Pliego del Concurso de Colaboración Público Privado para la adecuación de las instalaciones de alumbrado exterior del municipio de Soto del Real a los preceptos del reglamento de eficiencia energética en instalaciones de alumbrado exterior RD 1890/2008. Artículo "Reforma y gestión integral del alumbrado exterior del municipio de Soto del Real a través de una ESE" (Describe todo el proceso del concurso de una ESE hasta su contratación). Imágenes Soto del Real: antes y después
Links of interest
Comité Español de Iluminación, CEI (Spanish Lighting Committee)