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2.7 RISK MANAGEMENT<br />

2.6.3 Ancillary Services<br />

In addition to electricity and heat in<br />

2002 we also supplied the following<br />

contractually required ancillary services:<br />

• Voltage regulation with all power generators<br />

• Primary frequency regulation with all<br />

power generators<br />

• Secondary frequency regulation in<br />

the regulation range of ±80 MW<br />

• Tertiary frequency regulation with a<br />

less than 15-minute activation of cold<br />

and rotating reserve power

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