The Ecodesign for Energy-Related Products and Energy Information Regulations 2021

Energy efficiency index limits for on-mode

2.—(1) The energy efficiency index (EEI) of an electronic display must be calculated using the following equation—

(2) For the purposes of sub-paragraph (1)—

(a) A represents the screen area in dm²;

(b) P_measured is the measured power in Watts in on mode in the normal configuration, in standard dynamic range (SDR);

(c) tanh is the hyperbolic tangent function;

(d) corr is—

(i) for displays placed on the market before 1 March 2023, a correction factor of 10 for OLED electronic displays that do not apply the ABC allowance in paragraph 3;

(ii) zero in all other cases.

(3) The EEI of an electronic display must not, from the dates specified in Table 31, exceed the maximum EEI (“EEI_max”) in accordance with the limits in that Table.

(4) The declared values of the on mode power (P_measured) and viewing surface area (A) in the technical documentation must be used for the calculation of EEI.

Table 31

EEI limits for on-mode

	EEImax for electronic displays with resolution up to HD	EEImax for electronic displays with resolution above HD and up to UHD	EEImax for electronic displays with resolution above UHD and for MicroLED displays
Up to and including 28 February 2023	0.90	1.10	N/A
1 March 2023	0.75	0.90	0.90