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Bulb type	Watts	Rated life (hours)	Typical price (£)	Energy cost per year (£)	Bulbs needed per year	Total cost per year (£)
Traditional incandescent 60W	60	1000	1.00	16.43	1.095	17.52
Halogen eco 42W	42	2000	1.50	11.50	0.5475	12.32
Compact fluorescent (CFL) 12W	12	8000	3.00	3.29	0.136875	3.70
LED standard A60 8.5W	8.5	15000	2.50	2.33	0.073	2.51
LED dimmable A60 9W	9	15000	4.00	2.46	0.073	2.76
LED filament 7W	7	15000	4.50	1.92	0.073	2.24
LED ultra-efficient (energy class A) 4W	4	50000	8.00	1.09	0.0219	1.27
Smart Wi-Fi LED 9W	9	25000	12.00	2.46	0.0438	2.99