Despite the cheap energy advantages of efficient light bulbs, some homeowners are bulk-buying conventional bulbs before they are phased out from September.
The European Union is banning many types of conventional bulbs in a bid to drive sales of efficient alternatives and reduce electricity consumption across the continent, but some less enthusiastic homeowners are stockpiling the old bulbs by buying as many as 50 at once, reports the BBC.
Smaller retailers are seeing evidence of this more acutely, while many larger supermarkets have already phased in energy-efficient bulbs in anticipation of the new legislation.
Lesley Urrutia, who runs Pilton Electrical in Cardiff, told the BBC she is selling over eight times the normal volume of conventional light bulbs every day: "Elderly customers seem to be the most worried because they don't like the new energy-saving light bulbs."
Homeowners using efficient light bulbs could find long-term bills from energy suppliers are reduced and the purchase could be used alongside other efficiency measures such as installing insulation.
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