c/kWh
hours a day
Screen size
77"
195 cm, OLED
Energy rating
6
Annual electricity use
506 kWh
Label: 506 kWh Β· 0.14 kWh per hour on
Estimated running cost
$162 / year
$1,618 over 10 years
Power when on
138 W Β· 0.4 W standby

10% less electricity than the median of 453 comparable 75 inch TV registrations (565 kWh a year on the label basis). It uses less than 69% of them. At your rates that is about $19 a year less than the median, $189 over 10 years.

How efficient is it for its size?

kWh per year. Bar: the middle 80% of 453 comparable 75 inch TV registrations. Dot: this model (below the median). Hover or tab to a mark for its value.

Cohort: every currently registered 75 inch TV sold in Australia, counted once per registration, on the label usage basis.

Tvs that use less electricity

Same type and size group, at least 3% lower annual kWh on the label basis.

ModelStarsEst. cost / yrCompare
LG 75UM767H0LD75"258 kWh/yr8$83
Toshiba 75C350SP75"345 kWh/yr7$110
Toshiba 75C350RP75"345 kWh/yr7$110
Philips 75PUT7231/7575"381 kWh/yr7$122
Sylvox OQ75A3K8HG75"385 kWh/yr7$123

kWh and cost on the label usage basis; the product page adjusts to your usage.

Tvs similar to the LG OLED77B66LA

ModelStarsEst. cost / yrCompare
Sony K-77A6077"440 kWh/yr6$141
Sony K-77XR8077"562 kWh/yr5.5$180
Kogan KAOD77X98JSV series77"540 kWh/yr5.5$173
Kogan KAOD77X98JSVC77"540 kWh/yr5.5$173
Loewe BILD S.7777"833 kWh/yr3.5$267
Loewe BILD i7776"395 kWh/yr7$126

kWh and cost on the label usage basis; the product page adjusts to your usage.

Other LG models of similar size

ModelStarsEst. cost / yrCompare
LG OLED77A2PSA77"462 kWh/yr6$148
LG OLED77C6PSA77"462 kWh/yr6$148

kWh and cost on the label usage basis; the product page adjusts to your usage.

Compare OLED77B66LA with another TV

LG OLED77B66LA specifications

Screen size (diagonal)
194.7 cm (76.7")
Screen area
16,204 cmΒ²
Screen technology
OLED
On-mode power
138.0 W
Passive standby power
0.40 W
Active standby power
0.00 W
Power supply
Internal
Tuner
Analogue/Digital
Annual energy (label)
506 kWh
Star rating index
6.10
Country of manufacture
Indonesia, South Korea

Australian GEMS registration details

Registration number
ATV7170
GEMS registration id
175418
Status
approved, available (self-reported)
Registration expires
26 January 2031
Registered for sale in
Australia, New Zealand
Family
–
Regulatory standard
Greenhouse and Energy Minimum Standards (Televisions) Determination 2013
Test standard
AS/NZS 62087.1:2010

Source: Australian Government Energy Rating (GEMS) registration data, DCCEEW via data.gov.au (CC BY 3.0 AU). Dataset published 20 September 2026; last checked 20 September 2026. How the derived figures are calculated.