UK's Second Largest

Scottish & Southern Energy PLC
21 December 2007


                        SCOTTISH AND SOUTHERN ENERGY PLC

                     UK'S SECOND LARGEST SUPPLIER OF ENERGY


Scottish and Southern Energy plc ('SSE') has overtaken EON UK to become the UK's
second largest supplier of electricity and gas, according to the Datamonitor
Market Share Monitor.


Its analysis of all electricity and gas customer accounts shows that SSE had
just over 8.1 million customers as at 31 October 2007, over 130,000 more than
EON UK. In the time since then, SSE's electricity and gas customer numbers have
grown further, to 8.2 million. In addition, SSE also has 200,000 telecoms and
gas boiler maintenance customers, taking its total number of customers to 8.4
million. This means SSE has gained 3.9 million customers since the start of
2002, when it was the UK's fifth largest energy supplier.


SSE supplies energy as Scottish Hydro Electric, Southern Electric, SWALEC and
Atlantic. In October 2007, uSwitch.com reported that it was ranked top for
customer satisfaction for the fourth time in a row in its independent Customer
Satisfaction Report. In November 2007, in the results of the JD Power 2007 UK
Electricity and Gas Customer Satisfaction Study, SSE was ranked the top
performing supplier in both electricity and gas.


Ian Marchant, Chief Executive of SSE, said:


'I am delighted that the hard work by teams of people throughout SSE has
resulted in us passing the milestone of becoming the UK's second largest energy
supplier.


'The sustained growth which we have achieved in the last few years has been the
result of providing best-in-sector service and consistently adopting a policy of
responsible pricing against a backdrop of volatile wholesale energy markets.


'We want to increase customer numbers further, and will seek to do so through
more improvements in customer service, a continued policy of responsible pricing
and good product development.'




                      This information is provided by RNS
            The company news service from the London Stock Exchange