Energy Efficiency Regulations: ErP, Energy Star, and MEPS Across the Markets

LED lighting is the most energy-efficient lighting technology, and it is also the most regulated. The energy efficiency of luminaires, light sources, and their control gear is governed by a patchwork of regulations that vary by market: the European ErP (Energy-related Products) directive, the voluntary US Energy Star program, and the mandatory Minimum Energy Performance Standards (MEPS) in Australia and other countries. For a manufacturer selling LED drivers internationally, understanding which regulations apply where, and which parts of the product they govern, is essential to avoiding market access surprises.

Europe regulates lighting energy efficiency under the Ecodesign Regulation (EU) 2019/2020, which replaced the earlier 2009/125/EC implementing measures for lighting. The regulation sets requirements for light sources and separate control gear, covering efficiency at rated power, standby and off-mode power consumption, and — importantly for drivers — the power losses of the control gear itself. For separate control gear, the regulation sets maximum no-load power and standby power limits, and requires the control gear to be capable of dimming for certain product categories. The regulation also introduced the new EU energy label for light sources (the A-G scale, where LED products typically rate A or B), replacing the older A++ rating system. A driver sold into Europe must comply with 2019/2020, and the manufacturer must maintain the technical documentation that supports compliance.

The US Energy Star program for lighting is voluntary, but it is the de facto requirement for many commercial and government projects because it signals quality and energy performance. Energy Star specifications for lighting cover luminaires and light sources, with requirements on efficacy (lumens per watt), color quality, and standby power. For integrated LED luminaires, the driver efficiency is embedded in the overall efficacy — a luminaire with a more efficient driver achieves a higher efficacy and is more likely to meet the Energy Star threshold. There is no separate Energy Star requirement for standalone LED drivers, but driver efficiency directly affects the luminaire's ability to qualify. California's Title 20 and Title 24 add state-level requirements that effectively influence driver design for the US market as well.

Australia regulates lighting energy through MEPS, the Minimum Energy Performance Standards, enforced under the Greenhouse and Energy Minimum Standards (GEMS) Act 2012. MEPS for lighting covers a range of lamp types with minimum efficacy requirements, and separate control gear is addressed through the requirements for the luminaires they serve. The Australian MEPS regime also requires products to be registered in the national GEMS database with a compliance statement. For LED drivers, the practical implication is the same as in Europe: the driver's efficiency contributes to the efficacy of the luminaire it powers, and a luminaire that cannot meet the MEPS efficacy threshold cannot be sold into the Australian market. This is why the >88 percent efficiency of the PV100-class driver is not just a marketing number — in Australia, it is part of the compliance arithmetic.

The measurement basis matters as much as the limits. Efficiency is tested at a defined input voltage (230V in Europe and Australia, 120V in the US), at rated output, and typically at a defined operating temperature. A driver may be more efficient at 240V than at 200V — the switching losses vary with input — and the test standard (IEC 62301 for standby, the relevant product standard for efficiency) defines how the measurement is made. Buyers comparing efficiency figures across suppliers should confirm that the numbers were measured under the same conditions, ideally to the relevant standard.

The practical picture for a driver supplier is consistent across the three markets: driver efficiency feeds the luminaire efficacy, standby and no-load power are regulated directly, and the compliance documentation (technical files, test reports, registrations) must be maintained per market. A driver with >88 percent efficiency, low standby power, and a tested measurement basis can serve all three markets. A driver with 82 percent efficiency may still be sold, but it makes the luminaire harder to qualify, limits the luminaire's energy rating, and in regulated categories may block the product from the market entirely. In lighting, energy efficiency has moved from a selling point to a regulatory requirement — and the driver is where a large part of that efficiency is won or lost.