Concentrated Solar Power Plants with Molten Salt Storage: Economic Aspects and Perspectives in the European Union

Table 2

Total production of primary energy in EU-28 and in Poland, 2004-2014.

Year	EU-28	Poland
2004	930.1	78.5
2005	900.2	78.2
2006	881.6	77.2
2007	856.5	72.0
2008	850.7	70.8
2009	816.0	67.1
2010	831.6	66.9
2011	802.9	67.9
2012	794.3	71.1
2013	789.7	70.5
2014	771.6	66.8

Source: Eurostat (online) (cit.2016-02-17), available: data codes: ten00076. The energy balances (also called energy balance sheets) are expressed in thousands of tonnes of oil equivalent (ktoe). The tonne of oil equivalent is a standardised energy unit defined as a net calorific value of 107 kilocalories (41,868 MJ), which is roughly the net energy equivalent of a tonne of crude oil. Mtoe: million tonnes of oil equivalent.