Ecodesign and Energy-Efficiency Law:
EU Ecodesign, the Energy Label, and Where Decorative Lighting Falls

Many teams building decorative light strings assume 'energy-efficiency law' is a concern for the big lighting brands and has nothing to do with a few festive fairy lights. But the EU's Ecodesign and energy-labelling rules define the object of regulation as the 'light source'—and in the eyes of the law, an entire light string is very likely a single 'light source.' Where that line is drawn, whether an exemption covers you, whether you must apply an energy label—all of this needs settling before you export to the EU.

Many teams building decorative light strings share an instinct: ‘energy-efficiency law’ is the big lighting brands’ problem, not something that touches a few festive fairy lights or Christmas strings.

In the EU market, that instinct can get you into trouble. The EU’s Ecodesign and energy-labelling rules define the object of regulation as the ‘light source’—and in the eyes of the law, an entire light string is very likely a single ‘light source.’ Where that line is drawn, whether an exemption covers you, whether you have to apply an energy label—these are all questions to settle before you export to the EU.

What Ecodesign is: from directive to lighting regulation

Ecodesign is the EU’s framework of environmental design requirements for energy-related products, with its legal basis in the Ecodesign Directive 2009/125/EC. Its logic is this: rather than recycle a product once it has worn out, require it at the design stage to be more efficient, easier to maintain and more transparent about its own information.

For lighting, the current core is Commission Regulation (EU) 2019/2020^[1]. Published in October 2019 and applicable from 1 September 2021, it replaced three earlier regulations at once (244/2009, 245/2009 and 1194/2012). The industry commonly shortens it to SLR (Single Lighting Regulation), because it consolidates what used to be scattered lighting rules into a single measure.

What the SLR covers: light sources and separate control gears

The objects of regulation under 2019/2020 are light sources and separate control gears. For products within scope it sets efficiency thresholds, ceilings on standby and networked-standby power, and a set of product information that must be disclosed.

For decorative lighting, the crux is not the intuitive ‘are the LEDs efficient enough,’ but a more fundamental question: does your product, under the legal definition, count as a single ‘light source’?

On the EU’s reading, a light string, light chain or light strip is treated as a complete light source that cannot be broken down to its smallest light-emitting unit—that is, the whole string is regarded as a single ‘light source,’ not ‘a bunch of small lights bundled together.’ Once that judgment holds, the entire product falls within the scope of the SLR.

The edge of exemption: Annex III and decorative/festive light sources

The regulation does not cover everything. Annex III of 2019/2020 lists exempted and partially exempted cases—light sources in battery-powered products, light sources in electronic displays, light sources for certain special applications, and so on. Decorative and festive light sources often sit right on the edge of that exemption line—sometimes covered, sometimes partially exempt because of a particular technical characteristic.

One point deserves candor here: whether an exemption applies turns on the product’s specific technical characteristics and declared use—the four words ‘for decorative use’ do not grant an automatic exemption. To claim an exemption, the regulation requires you to state clearly, in the technical documentation and on every form of packaging, the product’s intended use and to declare that it is ‘not intended for other uses,’ while listing in the technical documentation the technical parameters that make the product qualify for the exemption.

In other words, an exemption is not a shortcut that saves effort but a path that demands responsible proof. For the actual scope and the exemption conditions, always defer to the official text and the latest guidance.

The energy label: the A–G class and EPREL registration

Running in parallel with the SLR is the energy-label obligation. Commission Delegated Regulation (EU) 2019/2015^[2], published in March 2019, supplements the energy-labelling framework Regulation (EU) 2017/1369 and likewise applies from 1 September 2021. The industry commonly calls it the ELR (Energy Labelling Regulation).

Its core requirements include:

• Light sources within scope must display an A to G energy-efficiency class (7 classes in all), differentiated by total mains efficacy in lumens per watt (lm/W)
• The label must carry a scannable QR code linking to the EU’s EPREL product database
• Manufacturers/importers must register the product information in EPREL

For an export team, this means that if a product falls within scope, you have to be not only ‘compliant’ but ‘verifiable’—the label, the database and the technical documentation all have to line up. Again, whether a given decorative string falls under the labelling obligation comes back to the judgment of ‘is it a light source within scope,’ so verify against the official catalogs and guidance.

What it means for light strings exported to the EU

Pulling the logic above into a practical path:

1. Determine scope first: under the definitions of 2019/2020 and 2019/2015, does your light string count as a ‘light source’? The odds of the whole string being treated as a complete light source are high.
2. Confirm any exemption: if you claim an Annex III exemption, prepare the technical parameters and the declaration of use, and mark the packaging correctly—this has to be proven, not assumed.
3. If within scope, assemble three things: technical documentation, energy-efficiency and information disclosure, and the energy label plus EPREL registration.
4. Keep judgment flexible: regulations are revised and guidance is updated, and boundary products are especially version-sensitive.

The PowerMOS role: making energy-efficiency performance controllable

What the law governs is a product’s efficiency and information; the foundation of that efficiency is drive and power management. PowerMOS pixel-control ICs use a constant-current architecture and high-grayscale dimming to manage the power of every LED precisely while preserving the visual effect—which materially helps how the whole string performs in both standby and lit states.

To be clear: the PowerMOS IC itself is not an implementation of these EU regulations; it uses a proprietary carrier protocol optimized for LED pixel control. But a stable, controllable, low-standby drive foundation is the premise on which a product achieves ‘predictable power draw,’ and it gives the efficiency and compliance work a firmer footing. See the full model range at the product center.

Further reading: for drive efficiency, see Constant-Current Drive and Efficiency: The Power Engineering of Decorative Lighting; for power quality, see Power Quality and Harmonics in LED Drives.

References and standards

1. Commission Regulation (EU) 2019/2020, laying down ecodesign requirements for light sources and separate control gears pursuant to Directive 2009/125/EC. European Commission.
2. Commission Delegated Regulation (EU) 2019/2015, supplementing Regulation (EU) 2017/1369 with regard to energy labelling of light sources. European Commission.

This article is an educational piece on regulation. The names and scope of the cited regulations can be verified in the official catalogs of EUR-Lex and the European Commission; the official text governs actual application. PowerMOS pixel-control ICs use a proprietary carrier protocol optimized for LED pixel control.

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