On October 15, 2024, all distribution system operators in Germany published their time-variable grid charges for the low-voltage grid level in accordance with Module 3 of Section 14a of the German Energy Industry Act (EnWG). Our analysis reveals some interesting trends in how the different price periods are structured. We identified three main approaches:

Variant 1:
The most common approach: peak tariffs are set between 5 PM and 9 PM, coinciding with high demand and decreasing PV generation. Low-load windows typically fall between midnight and 6 AM, with some operators offering lower tariffs as early as 10 PM.

Variant 2:
Similar to Variant 1 but with an additional peak tariff window at midday, when PV generation is high and electricity prices are usually low. This variant is likely used by operators facing demand-related constraints during midday hours.

Variant 3:
In this approach, the low-load window shifts to midday, aligning with periods of high PV generation. Peak tariffs remain in the evening. This encourages consumption during midday and is particularly suitable for operators aiming to avoid feed-in-related grid constraints.

Seasonal Differences:
Most operators implement time-variable tariffs during specific quarters—typically in autumn and winter (Q1 and Q4).

Benefits for Consumers:

Nighttime Low-Load Tariffs: Ideal for EV owners who charge overnight. Depending on the duration and pricing of the low-load windows, consumers can save €40–€200 per year.

Midday Low-Load Tariffs: Businesses offering EV charging for employees can benefit from midday low tariffs. Potential savings range from €40–€120 per year by timing EV charging to these windows.

Additional Savings with Dynamic Tariffs: Low-load windows often overlap with low market prices, creating opportunities for even greater savings when combined with dynamic tariffs. The result? A compelling offer for end consumers.

Our Expertise at E-Bridge: We support electricity suppliers and municipal utilities in introducing dynamic tariffs. Together, we design attractive products that fully leverage the potential of time-variable network tariffs—for real value to both utilities and consumers.