
https://medium.com/@roshmitadey/time-series-decomposition-62cbf31ab65e

http://eur-lex.europa.eu/resource.html?uri=cellar:fa6ea15b-b7b0-11e6-9e3c-01aa75ed71a1.0001.02/DOC_1&format=PDF

https://www.brookings.edu/blog/planetpolicy/2017/08/23/grid-storage-in-the-1830s-lessons-for-innovation-in-todays-energy-market/?utm_campaign=Brookings%20Brief&utm_source=hs_email&utm_medium=email&utm_content=55637308