He comments that -
- They lose light intensity after a few months
- The waste heat from standard bulbs warms the room, which in winter should reduce the load on thermostatically controlled central heating
- They contain mercury [will this still be legal under EU rules?] so they have to be disposed of as hazardous waste (adding to costs) and not dumped in landfill, where they might contaminate the groundwater.
Was it David Miliband who suggested a tax on standard lightbulbs?