Key indicators Sustainability indicators Financial indicators Ecological indicators 60 | 61 Financial indicators. Stock held by sustainable investors in Europe. Net revenue, EBITDA/EBITDA margin (adjusted for special factors), and net profit at Deutsche Telekom. billions of € Net revenue Adjusted EBITDA * Adjusted EBITDA margin * (%) Net profit 1st half of 2008 30.1 9.5 31.7 1.3 2007 62.5 19.3 30.9 0.6 2006 61.3 19.4 31.7 3.2 * Deutsche Telekom defines EBITDA as profit/loss from operations before depreciation, amortization and impairment losses. For a detailed explanation of the special factors affecting EBITDA, adjusted EBITDA, and the adjusted EBITDA margin, please refer to the “Development of business” section in the Group management report of the 2007 Annual Report, page 63 ff. A detailed explanation of these financial indicators can be found at www.telekom.com/investorrelations. Ecological indicators. Energy consumption of the Deutsche Telekom Group. % 2.4 2.0 1.6 1.2 0.8 0.4 0 2.34 1.08 1.31 2007 a 2006 2005 b a Data as of May 2008. b The conservative SBI estimate of 1.5 % on the deadline for the 2006 Human Resources and Sustainability Report was updated on the basis of the 2.34 % calculated by SBI and Eurosif for 2005. The stock held by sustainable investors in Europe was ascertained in 2007 as in previous years by the Sustainable Business Institute (SBI). MWh Germany Great Britain Netherlands Austria Slovakia Czech Republic Hungary Croatia Montenegro Macedonia Poland USA Total excl. Germany Total n.a. = not available Power consumption Heating consumption 2007 2006 2005 2007 2006 2005 2,992,382 273,635 65,534 111,993 a 88,888 87,558 205,042 97,711 8,400 26,747 151,685 a 1,266,276 2,383,470 5,375,851 2,927,002 233,474 51,536 65,780 a 103,249 84,782 296,205 96,411 10,942 b 36,839 a 12,322 b 1,174,379 a 2,165,919 5,092,921 2,956,769 242,843 46,287 9,002 100,515 88,827 233,115 101,928 n.a. 3,626 n.a. 748,856 1,575,000 4,531,769 731,437 7,529 n.a. 3,981 42,487 c 5,817 81,641 31,603 1,015 13,786 n.a. 27,119 214,977 946,414 758,708 10,644 n.a. 4,539 57,012 c 7,092 120,964 36,134 3,810 b 14,532 a 123 b 44,301 a 299,153 1,057,861 717,143 8,609 2,670 4,618 77,973 n.a. 112,026 42,500 n.a. 50 n.a. 75,423 323,870 1,041,012 Individual amounts published have been rounded. When added, they may therefore vary slightly from the published totals. a Not comparable with the previous year’s figures, since the individual data entry systems were still being set up. b There are no comparable figures from previous years, since the subsidiary involved in each case was not a Deutsche Telekom majority holding at the time and therefore not subject to reporting requirements. c The marked, continual reduction in heating energy consumption is the result of sustained, extensive staff adjustments at Slovak Telekom.