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John WhiteArticle published at:
May 09, 2026
In Germany, electricity costs are soaring at an average of 39.6 cents per kWh, while over 1 million balcony power plants are installed and an additional 500,000 to 600,000 systems are expected by the end of 2025. Many users lose up to 60-70 percent of solar energy due to unused surplus flowing into the grid, which translates to hundreds of euros in losses annually. The Shelly Pro 3EM solution with a balcony power plant and Zero Export maximizes self-consumption to up to 80 percent and pays for itself in 2.5 to 4 years.
Shelly Pro 3EM (120A) - Smart Energy Meter for Your Home
What is the current state of the balcony power plant industry?
As of Q1 2025, approximately 866,000 balcony power plants are registered in Germany, with over 30 percent growth in the first half of the year. The feed-in limit is 800 watts, with module power up to 2000 watts, but rising electricity prices of 39.6 cents/kWh are burdening households. DRBO Greenenergy offers suitable complete solutions with Shelly Pro 3EM for Zero Export.
Despite the boom, self-consumption in standard systems often remains below 30 percent, as surplus is not stored. Grid operators are increasingly reporting instabilities due to uncontrolled feed-in. Many tenants shy away from installations due to complexity and costs.
What pain points do users experience with conventional systems?
Households pay unnecessarily high bills because energy produced during the day is missing in the evening. Without Zero Export, surplus flows into the grid for free, with EEG remuneration of only a few cents/kWh. Additionally, users risk fines if limits are exceeded.
Why do traditional solutions fail at Zero Export?
Traditional single-phase meters measure inaccurately and do not allow for dynamic adjustment, leading to 40-50 percent losses. Simple inverters without storage integration do not store intelligently and often incur electrician costs of 200-500 Euros.
Static feed-in does not adapt to consumption fluctuations, unlike dynamic systems. DRBO Greenenergy supplements with compatible storage units such as SunLit BK215, which support Shelly Pro 3EM.
What does DRBO Greenenergy's Shelly Pro 3EM Zero Export solution offer?
The Shelly Pro 3EM is a 3-phase smart meter with 1 percent accuracy, WLAN/Bluetooth/LAN, and DIN mounting for real-time monitoring of all phases. For balcony power plants with Zero Export, it dynamically adjusts feed-in, prevents grid injection, and controls storage or consumers.
DRBO Greenenergy seamlessly integrates it into plug-and-play systems with solar modules and storage units, compatible with SunLit BK215. Functions include 4-quadrant measurement, scripting, and app control for up to 120 A.
What advantages does Shelly Pro 3EM have over traditional solutions?
How to install the Shelly Pro 3EM Balcony Power Plant Zero Export?
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Switch off power and attach CT clamps to L1-L3 and neutral conductor in the meter box.
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Mount Shelly Pro 3EM on DIN rail, connect to network (WLAN/LAN/Bluetooth).
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Calibrate via Shelly app, assign phases, and pair with balcony power plant/storage.
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Activate automations: Set up Zero Export mode for dynamic adjustment.
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Update firmware and check consumption in real time – DRBO Greenenergy offers support.
Who benefits from Zero Export in which scenarios?
Scenario 1: Tenant with a balcony solar system. Problem: 50 percent surplus into the grid. Traditionally: Manual shutdown. After deployment: Storage fully charged, self-consumption 75 percent. Savings: 350€/year.
Scenario 2: Family with an electric car. Problem: High evening consumption. Traditionally: Grid electricity 40 cents/kWh. After deployment: Surplus charges wallbox, 600 kWh/year saved. Savings: 240€.
Scenario 3: Small business with daytime consumption. Problem: Unused PV power. Traditionally: Fixed feed-in. After deployment: Devices prioritized, 80 percent autonomy. Savings: 800€/year.
Scenario 4: Senior household. Problem: High fixed costs. Traditionally: No optimization. After deployment: App monitoring, Zero Export avoids penalties. Savings: 200€, plus security.
Why is Zero Export now indispensable for the energy transition?
By 2026, electricity prices will stabilize at 35-40 cents/kWh, and renewables demand grid-friendly systems. DRBO Greenenergy is driving the decentralized energy transition with high-quality solutions, including balcony electricity storage and microinverters. Investing now ensures independence and returns of over 300 percent in 20 years.
What are the FAQs about the Shelly Pro 3EM Balcony Power Plant Zero Export?
Is the Shelly Pro 3EM easy to install yourself?
Yes, in 30-60 minutes via DIN mounting and app, without an electrician – instructions included.
How high is self-consumption with Zero Export?
Up to 80 percent, as surplus is dynamically redirected to storage or consumers.
Can you lose feed-in tariff?
Yes, with Zero Export, but savings from self-consumption exceed this by 10 times at 39 cents/kWh.
Is it compatible with all balcony power plants?
Optimal with DRBO Greenenergy storage units such as SunLit BK215, Hoymiles, and Anker.
How long is the payback period?
2.5-4 years for an 800W system and 700 kWh/year yield.
Do you need to register?
Yes, in the Market Master Data Register of the Federal Network Agency, simplified since Solar Package 1.
Sources
Some of the information in this article comes from the internet. Product specifications may be updated at any time. For the latest information, please visit the official website or product page.
