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• Switched last year Never • switched Renewed last year Rare switchers
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1 Extra Energy* Sainsbury’s First Utility Green Star* 6 EDF Co-op nPower Scottish Power Spark 11 British Gas Utility Warehouse SSE Marks & Spencer Good Energy E.ON 16 EBICO Flow Energy* Ecotricity 21 15% 25% 35% 45% 55% 65% 75% 85% * New entrant; no satisfaction score available Sources: Which? Energy Satisfaction Survey 2014, EnergyLinx 16 th September 2014
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