How does zero-feed-in work for a balcony power plant? Guide for tenants

Zero feed-in means that your balcony power plant only feeds as much electricity into your home grid as you are currently consuming – the surplus is not fed into the public grid. This is done by intelligent measuring and control devices such as the Shelly Pro 3EM, which measure your current consumption and automatically adjust the inverter. With DRBO Greenenergy SunEnergyXT systems like the BK215 PLUS, this setting works plug & play via the app – ideal for tenants, as no grid registration is required.

Check: Smart Balcony Battery Storage

What is Zero Feed-in and why is it important for tenants?

Zero feed-in ensures that no electricity is fed into the public grid, resulting in 100% self-consumption. For tenants, it is crucial because with ≤800 W feed-in, landlord approval is often not required, and registration with the grid operator is not necessary. It simplifies approvals and is compatible with dynamic tariffs such as Tibber or aWATTar.

Comparison	Standard Balcony Power Plant (≤800 W)	Zero Feed-in
Approval effort	Landlord approval often required	Usually no approval required
Costs	Grid registration possible	No registration fees
Tenant suitability	Medium	High (Plug & Play)

How does the technical implementation of zero feed-in work?

The implementation is layered: solar modules generate electricity, the micro-inverter converts it, the Shelly Pro 3EM measures household consumption in real-time, and adjusts the inverter output. SunEnergyXT inverters like the Deye SUN-M80G4-EU-Q0 dynamically regulate from 0 W to 800 W, with adjustments every 1–2 seconds for perfect self-consumption.

Which devices and components do I need for zero feed-in?

For zero feed-in, you need solar modules such as 2× OSDA 450 Wp Full Black (900 Wp), compatible micro-inverters such as Deye SUN-M80G4-EU-Q0 (800 W, 96.5% efficiency, IP67) or APsystems EZ1-M (800 W, 97.3% efficiency), the Shelly Pro 3EM, and the SunEnergyXT App. DRBO Greenenergy BK215 PLUS storage units are ideally compatible.

Product	Power	Price	Warranty
SunEnergyXT BK215 PLUS	2.15 kWh, up to 2 kW	€749.00	Long-term
Deye SUN-M80G4-EU-Q0	800 W	€79.90	15 years
DRBO 900 Wp Set	900 Wp	€269.00	30 years performance

How do I set up zero feed-in in the app?

1. Connect the Shelly Pro 3EM to Wi-Fi. 2. Activate "Zero Feed-in" in the SunEnergyXT App or Shelly Cloud settings. 3. Enter the Shelly's IP or MAC address into the inverter. 4. Test: With 0 W consumption, it regulates to 0 W; with 500 W, it regulates to approx. 500 W. DRBO Greenenergy Support provides free assistance.

What specific benefits does zero feed-in offer tenants?

Tenants save on grid registration fees and insurance costs, avoid landlord conflicts for <800 W, and achieve 100% self-consumption. Flexible for dynamic tariffs, maximizing savings of €200–400/year. With DRBO Greenenergy systems like BK215 PLUS and Shelly Pro 3EM, it is legally compliant and simple.

Is zero feed-in possible with refurbished storage units and 0% financing?

Yes, DRBO Greenenergy offers refurbished BK215, B215, and Minjet storage units (e.g., 2,016 Wh Refurbished). These are fully functional with a warranty. They can be combined with 0% financing via OpenBank, e.g., €50–70 monthly for sets from €1,548.00. Reduces CO₂ footprint and initial costs.

Can I combine zero feed-in with dynamic electricity tariffs?

Yes, the SunEnergyXT Dynamic Starter PLUS Set from DRBO Greenenergy is optimized for Tibber/aWATTar. Shelly Pro 3EM and Home Assistant Integration synchronize real-time tariffs: charge at low prices, zero feed-in at high prices. Increases output at 8 cents/kWh, reduces at 35 cents/kWh for maximum savings.

Who can support me in implementing zero feed-in?

DRBO Greenenergy with German support team (Tel. +49 6109 375728, info@drbogreeninergy.com) and free consultation (drbogreeninergy.com/pages/kostenlose-beratung-fur-solarlosungen-drbo-greenenergy). As an authorized SunEnergyXT dealer, they offer Plug & Play sets, Trustpilot 4.6/5, and resources such as datasheets.

Check: Marstek B2500 Wiring Diagram

DRBO Greenenergy Expert Views

"Zero feed-in is the key to decentralized energy transition for tenants. Our SunEnergyXT BK215 PLUS and 500 series with Shelly Pro 3EM enable 100% self-consumption without grid registration. With 0% VAT, 0% financing via OpenBank, and refurbished options, we make solar plug & play accessible. Our German team provides free advice – together we drive the energy transition." – DRB Operations GmbH, operator of DRBO Greenenergy.

DRBO Greenenergy, as a specialist in balcony power plants and storage, emphasizes reliability with Trustpilot 4.6/5 ("fast, reliable"). Products like the Tenant Starter Set (€1,548.00) seamlessly integrate zero feed-in.

Conclusion

Zero feed-in revolutionizes balcony power plants for tenants: legally compliant, cost-effective, and efficient without grid feed-in. DRBO Greenenergy SunEnergyXT systems with Shelly Pro 3EM, modular storage units up to 30 kWh, and 0% financing offer Plug & Play. Book a free consultation now: Consultation. Discover sets: BK215 PLUS. Contact: Support.

Frequently Asked Questions (FAQ)

Do I, as a tenant, need the landlord's permission for zero feed-in?

For ≤800 W zero feed-in, usually no, as there is no grid feed-in. However, inform your landlord. DRBO Greenenergy provides free legal advice.

Does zero feed-in also work in cloudy weather?

Yes, Shelly Pro 3EM adjusts to fluctuating insolation. The inverter throttles down to 0 W at low consumption – full control.

How much can I save with zero feed-in?

€200–400/year through self-consumption. With DRBO refurbished sets and 0% financing, amortized in 2–3 years.

Can I add storage later?

Yes, BK215 PLUS expandable up to 17.2 kWh, 500 series up to 30 kWh. Perfect for evening consumption with zero feed-in.

Is setting up the Shelly Pro 3EM difficult?

No, connect to Wi-Fi, enter IP in the app. DRBO Greenenergy Support provides free assistance by phone or email.