1. US Energy Information Administration, URL: https://www.eia.gov/todayinenergy/detail.php?id=41753.
2. Peak-off-peak load shifting: Are public willing to accept the peak and off-peak time of use electricity price?;Yang;J. Cleaner Prod.,2018
3. Ministry of Industry, Energy and Tourism from Spain. Royal Decree 216/2014 of 28 March, establishing the methodology for calculating voluntary prices for the small consumer of electrical energy and its legal contracting regime, (BOE n°77 29.03.2014 pag. 27397-27428).
4. Red Eléctrica de España. https://www.ree.es/es/actividades/operacion-del-sistema-electrico.
5. Electricity prices for the PVPC. https://www.esios.ree.es/es/pvpc.