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<DIV dir=ltr><FONT face=Arial color=#000000 size=2>I have a question about
Renewable Obligation Certificates (ROCs) in the UK. What is the appropriate
GHG emission factor to use when you purchase renewable electricity from a
supplier who also receives a separate financial benefit from "selling" the
ROC?</FONT></DIV>
<DIV dir=ltr><FONT face=Arial size=2></FONT> </DIV>
<DIV dir=ltr><FONT face=Arial size=2>In North America, RECs represent the
environmental benefits associated with renewable electricity generation. Hence
if you want to claim that you are using renewable electricity with a zero GHG
emission factor, your options would include: self generating renewable
electricity, purchasing green power, or purchasing RECs. A supplier can not sell
both green power to customer A and then the RECs to customer B, as that would be
double counting the environmental benefit. If the RECs are disaggregated from
the electricity, there is no green power to sell.</FONT></DIV>
<DIV dir=ltr><FONT face=Arial size=2></FONT> </DIV>
<DIV dir=ltr><FONT face=Arial size=2>The situation with ROCs in the UK appears
to be similar, but not quite the same. Can someone from the UK offer some
guidance on how ROCs affect GHG emission factors?</FONT></DIV>
<DIV dir=ltr><FONT face=Arial size=2></FONT> </DIV>
<DIV dir=ltr><FONT face=Arial size=2>Cheers ... Duncan</FONT></DIV>
<DIV dir=ltr> </DIV>
<DIV dir=ltr><FONT face=Arial color=#000000 size=2><STRONG>Duncan
Noble</STRONG></FONT></DIV></DIV>
<DIV id=idSignature16977 dir=ltr>
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