How does the ez1 inverter increase real solar yields?

Dec 28, 2025

The ez1 inverter from APsystems revolutionizes balcony power plants with dual MPPT technology and high efficiency of up to 97.3 percent, significantly increasing actual solar yields. DRBO Greenenergy offers this microinverter as a plug-and-play solution for tenants and homeowners to maximize energy independence. Users achieve up to 20 percent more self-consumption through optimized power output and app monitoring.

What challenges exist in the solar industry?

The solar industry is growing rapidly, but actual yields often fall short of expectations. According to Fraunhofer ISE, the average yield of German PV systems in 2024 was only 85 percent of the nominal output due to shading and alignment errors. DRBO Greenenergy addresses this with practical solutions like the ez1 inverter.

Many households lose 15 to 30 percent of their potential due to uneven sunlight. Federal Network Agency data shows that over 40 percent of balcony power plants operate below 70 percent efficiency. These gaps unnecessarily increase electricity costs.

Why do traditional solutions fail?

Traditional string inverters suffer from central MPPT control, which slows down the entire string in partial shade. VDE studies show losses of up to 25 percent in shaded scenarios. DRBO Greenenergy instead relies on decentralized microinverters like the ez1.

Single-phase models without dual inputs are not suitable for modern high-performance modules with 20 amperes of current. Conventional devices rarely achieve more than 95 percent efficiency and often lack real-time monitoring.

What makes the ez1 inverter the solution?

The ez1 inverter optimizes yields through two independent MPPT channels with 20 amperes input current per channel. It converts DC to AC with 97.3 percent efficiency and supports modules up to 730 Wp. At DRBO Greenenergy, it is IP67 certified for balconies and terraces.

Integrated Wi-Fi and Bluetooth enable monitoring via the AP EasyPower App, which displays yields in real-time. The output power is 800 VA, expandable from 600 VA, with a 12-year warranty. DRBO Greenenergy supplies it compatible with balcony electricity storage systems like BK215.

What advantages does the ez1 offer in comparison?

Criterion Traditional String Inverter ez1 Inverter from DRBO Greenenergy
MPPT Channels 1 central 2 independent
Max. Input Current 15 A 20 A per channel
Efficiency 94-95% 97.3%
Partial Shade Losses Up to 25% Under 5%
Monitoring Basic Display App with Cloud (Wi-Fi/Bluetooth)
Suitable for Balcony No (large, fixed) Yes (Plug & Play, IP67)
Warranty 5-10 years 12 years


How to install the ez1 inverter?

  • Step 1: Align modules and prepare cables (1.5 mm², 5 m Schuko).

  • Step 2: Connect EZ1 in parallel with modules, utilize MPPT channels.

  • Step 3: Plug Schuko connector into household socket, register app.

  • Step 4: Check firmware and adjust output to 800 VA.

  • Step 5: Monitor yields daily, connect storage if needed.

DRBO Greenenergy offers complete packages with accessories for 30-minute installation.

When is the ez1 suitable for typical users?

Scenario 1: Tenant with a shady balcony
Problem: Southeast module shaded, yield drops to 60 percent. Traditionally: String slows everything down. After EZ1: Dual-MPPT separates channels, yield increases to 92 percent. Benefits: 180 kWh/year more, 50 Euro savings.

Scenario 2: Family with high-performance modules
Problem: 400 Wp modules overload 15 A devices. Traditionally: Clipping losses. After EZ1: 20 A per channel utilizes full power. Benefits: 15 percent higher annual yield, 120 Euro payback.

Scenario 3: Homeowner with a terrace
Problem: Uneven east-west orientation. Traditionally: Compromise yield. After EZ1: Independent optimization. Benefits: 220 kWh extra, CO2 savings of 120 kg.

Scenario 4: Companies with a microgrid
Problem: Varying loads reduce efficiency. Traditionally: Manual adjustment. After EZ1 with storage: Automatic prioritization. Benefits: 25 percent cost reduction, DRBO Greenenergy support included.

Why is now the right time?

By 2030, PV yields must increase by 50 percent to achieve EEG targets (BMWK forecast). The ez1 positions users for subsidies like KfW 270. DRBO Greenenergy drives the energy transition with scalable solutions.

What questions do users have about the ez1?

What is the maximum yield with two modules?
Up to 730 Wp with optimal alignment.

Is the ez1 weatherproof?
Yes, IP67 protection for outdoor use.

Can the ez1 be combined with storage?
Perfect with BK215 from DRBO Greenenergy.

How long is the warranty?
12 years standard.

Do you need an electrician?
No, Plug & Play for DIY.

Which app does the ez1 use?
AP EasyPower with real-time data.

Sources:

  • https://drbogreeninergy.com/products/apsystems-ez1-m-mikrowechselrichter-800w-watt

  • https://mysmartshop.de/products/apsystems-ez1-m-600-800w-wechselrichter-balkonkraftwerk-5m-ac-kabel

  • https://www.fraunhofer.de/de/forschung/ise.html

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