Factory friends doing business in the German market have almost certainly been asked about ErP by customers. It's part of the same set as CE, but it regulates different things—CE covers safety, ErP covers energy consumption. Simply put, how much electricity your product consumes in standby, off, and operating states, and whether the energy efficiency label is correct, all fall under its scope. German customs and market surveillance authorities inspect strictly. Without compliant ErP documents, goods may be directly held up when they arrive, customers will be frantic during customs clearance, and they'll come back to give you trouble.
Which products need it? The scope is larger than you might imagine. Luminaires, LED bulbs, driver power supplies, home appliances, motors, water pumps, fans, and even some electronic devices with standby functions are all under the ErP Directive framework. For each specific category, there are separate implementing regulations—for example, luminaires have (EU) 2019/2020, and home appliances have their own energy efficiency requirements. Many factories think only complete units need it, but actually the matching power supplies and controllers must also be checked. Don't wait until the customer chases you to discover something is missing.
There are three most common pitfalls. First, incorrect energy efficiency label calculations. You can't just fill in a number arbitrarily—you must test and calculate according to the formulas in the regulations. The grade, power consumption, and QR code on the label must all be correct. If German spot checks find the label doesn't match reality, the product will be directly taken down. Second, incomplete technical documentation. The technical documents required by ErP include test reports, energy efficiency calculations, and declarations of conformity. Many factories only do safety reports and lack the energy efficiency part, so they can't produce it when the customer asks. Third, standby power consumption exceeds limits. Some products have many functions and haven't done proper power management in standby, testing above the limit. Rectification then requires changing circuits or software, causing back-and-forth hassle.
Regarding timelines, it depends on product complexity. Generally, for luminaires, if documents are complete, testing plus report issuance takes one to two weeks; for home appliances or products with complex controls, it may take three to four weeks. If testing fails and rectification is needed, time must be calculated separately. It's advisable not to wait until the customer places an order to start. Do the energy efficiency testing in advance, prepare the labels and documents, and you'll be confident when quoting. If you have a specific product you're unsure about, send over the specification sheet and I'll help you see which route to take.