The Ecodesign for Energy-Related Products and Energy Information (Lighting Products) Regulations 2021

Energy efficiency requirements

Light sources

1.—(1) The declared power consumption of a light source P_on must not exceed the maximum allowed power P_onmax (in W), defined as a function of the declared useful luminous flux Φ_use (in lm) and the declared colour rendering index CRI (-) as follows—

• P_onmax = C × (L + Φ_use/(F × η)) × R;

where—

(a) the values for threshold efficacy (η in lm/W) and end loss factor (L in W) are as specified in Table 2, according to the light source type;

(b) basic values for correction factor (C) depending on light source type, and additions to C for special light source features are specified in Table 3;

(c) efficacy factor (F) is—

(i) 1.00 for non-directional light sources (NDLS, using total flux);

(ii) 0.85 for directional light sources (DLS, using flux in a cone);

(d) CRI factor (R) is—

(i) 0.65 for CRI ≤ 25;

(ii) (CRI+80)/160 for CRI > 25,

rounded to two decimals.

Table 2

Threshold efficacy (η) and end loss factor (L)

Light source description	η	L
	(lm/W)	(W)
LFL T5-HE	98.8	1.9
LFL T5-HO, 4,000 ≤ Φ ≤ 5,000 lm	83.0	1.9
LFL T5-HO, other lm output	79.0	1.9
FL T5 circular	79.0	1.9
FL T8 (including FL T8 U-shaped)	89.7	4.5
From 1st September 2023, for FL T8 of 2-, 4- and 5-foot	120.0	1.5
Magnetic induction light source, any length or flux	70.2	2.3
CFLni	70.2	2.3
FL T9 circular	71.5	6.2
HPS single-ended	88.0	50.0
HPS double-ended	78.0	47.7
MH ≤ 405 W single-ended	84.5	7.7
MH > 405 W single-ended	79.3	12.3
MH ceramic double-ended	84.5	7.7
MH quartz double-ended	79.3	12.3
OLED	65.0	1.5
Before 1 September 2023: HL G9, G4 and GY6.35	19.5	7.7
HL R7s ≤ 2 700 lm	26.0	13.0
Connected light sources (CLS) not mentioned above	120.0	2.0
Other light sources not mentioned above	120.0	1.5

Table 3

Correction factor C depending on light source characteristics

Light source type	Basic C value
Non-directional (NDLS) not operating on mains (NMLS)	1.00
Non-directional (NDLS) operating on mains (MLS)	1.08
Directional (DLS) not operating on mains (NMLS)	1.15
Directional (DLS) operating on mains (MLS)	1.23
Special light source feature	Addition on C
FL or HID with CCT > 5,000K	+0.10
FL with CRI > 90	+0.10
HID with second envelope	+0.10
MH NDLS > 405 W with non-clear envelope	+0.10
DLS with anti-glare shield	+0.20
Colour-tuneable light source (CTLS)	+0.10
High luminance light source (HLLS)	+ 0.0058 · Luminance-HLLS – 0.0167

(2) For the purposes of this paragraph—

(a) where applicable, additions on correction factor C are cumulative;

(b) the addition for HLLS must not be combined with the basic C-value for DLS (basic C-value for NDLS must be used for HLLS);

(c) light sources which allow the end-user to adapt the spectrum and/or the beam angle of the emitted light, resulting in changes to the values for useful luminous flux, colour rendering index (CRI) and/or correlated colour temperature (CCT), and/or changing the directional/non-directional status of the light source, must be evaluated using the reference control settings;

(d) the standby power P_sb of a light source must not exceed 0.5 W;

(e) the networked standby power P_net of a connected light source must not exceed 0.5 W;

(f) the allowable values for P_sb and P_net must not be added together.

(3) This paragraph is subject to the exemptions in paragraph 3(3) of Schedule 4.

Separate control gears

2.—(1) The minimum energy efficiency requirements of a separate control gear operating at full-load are the values set out in Table 4.

Table 4

Minimum energy efficiency for separate control gear at full-load

Declared output power of the control gear (Pcg) or declared power of the light source (Pls) in W, as applicable	Minimum energy efficiency
Control gear for HL light sources all wattages Pcg	0.91
Control gear for FL light sources Pls ≤ 5 5 < Pls ≤ 100 100 < Pls	0.71 Pls/(2 × √(Pls/36) + 38/36 × Pls+1) 0.91
Control gear for HID light sources Pls ≤ 30 30 < Pls ≤ 75 75 < Pls ≤ 105 105 < Pls ≤ 405 405 < Pls	0.78 0.85 0.87 0.90 0.92
Control gear for LED or OLED light sources all wattages Pcg	Pcg 0.81/(1.09 × Pcg 0.81 + 2.10 )

(2) For the purposes of this paragraph, the requirements of Table 4 apply to multi-wattage separate control gears in respect of the maximum declared power on which they can operate.

(3) Where a manufacturer or importer has declared in the technical documentation that a separate control gear has been designed for no-load mode, the no-load power P_no of the control gear must not exceed 0.5W.

(4) The standby power P_sb of a separate control gear must not exceed 0.5 W.

(5) For a connected separate control gear—

(a) the networked standby power P_net must not exceed 0.5 W;

(b) the allowable values for P_sb and P_net must not be added together.

(6) This paragraph is subject to the exemptions in paragraph 3(3) of Schedule 4.