How does a balcony power plant work for small apartments?

Nov 19, 2025

In Germany, electricity prices are continuously rising, while the demand for sustainable energy grows. A balcony power plant offers tenants and owners of small apartments a straightforward way to generate their own solar power, reduce costs, and actively contribute to the energy transition. DRBO Greenenergy provides high-quality plug-and-play solutions that are easy to install and can save up to 20% on electricity bills in the long term.

What does current energy consumption look like in small apartments?

In small households with an annual consumption of 2,000 to 2,500 kWh, rising electricity prices – currently at 35 cents per kWh – represent a significant burden. According to the Federal Network Agency, electricity costs for private households in 2025 amounted to an average of 1,200 euros per year. Tenants in cities are particularly affected, as they cannot use large rooftop systems.

What pain points do residents of small apartments experience?

Tenants in small apartments often lack space for extensive solar systems, and permits from landlords are complicated. In addition, the high proportion of base consumption – up to 40% of annual demand – leads to unnecessary costs with fluctuating prices. DRBO Greenenergy addresses this with compact balcony power plants that can be installed without structural changes.

Why is the energy transition urgently needed for tenants?

The EU aims for 45% renewable energy by 2030, but only 10% of tenant households use solar power. In small apartments, this creates a dependence on fossil fuels, causing CO2 emissions of 1 ton per household annually. The integration of decentralized solutions such as balcony power plants creates independence and significantly reduces this burden.

What are the disadvantages of traditional solar systems?

Traditional rooftop PV systems require high investments of 10,000 to 20,000 euros and professional installation by electricians. Permits take weeks, and tenants are often not allowed to install them. Furthermore, they only pay for themselves after 7–10 years, with limited flexibility for relocation.

Why are balcony power plants better suited for tenants?

Compared to large systems, balcony power plants cost only 300–800 euros and are plug-and-play. They generate 200–600 kWh annually, cover 10–30% of demand, and do not require roof space. DRBO Greenenergy offers models with Deye inverters that work bidirectionally and allow for storage expansion.

What are the core components of a balcony power plant?

A balcony power plant consists of 1–4 solar modules (up to 800 W peak power), a micro-inverter, and mounting accessories. The modules convert sunlight into direct current, which the inverter then converts into alternating current for sockets. DRBO Greenenergy integrates energy management systems for optimal efficiency.

What advantages does DRBO Greenenergy offer?

DRBO Greenenergy provides complete sets with solar modules, storage units, and accessories, including refurbished variants at fair prices. The plug-and-play systems are tenant-friendly, durable, and generate measurable savings of 100–250 euros annually. Local support in Germany ensures quick advice.

How do traditional solutions differ from balcony power plants?

Criterion	Traditional PV system	Balcony power plant (e.g., DRBO Greenenergy)
Acquisition costs	€10,000–€20,000	€300–€800
Installation	Professional installation, permits	Plug-and-play, 30 minutes DIY
Annual generation	3,000–5,000 kWh	200–600 kWh
Amortization	7–10 years	2–4 years
Suitable for tenants	No (structural change)	Yes (mobile, removable)
CO2 savings/year	1.5–2.5 t	0.1–0.6 t

How to set up a balcony power plant?

Choose location: Balcony or terrace facing south, at least 4 hours of sun daily.
Mount modules: Secure with brackets, connect cables (10 minutes).
Connect inverter: Plug into Schuko socket, activate app for monitoring.
Registration: Register with the grid operator (simplified procedure up to 800 W).
Commissioning: Automatic self-consumption, feed surplus into the grid.

When does a balcony power plant pay off in practice?

Scenario 1: Single household in a 40 m² apartment
Problem: High base consumption (1,500 kWh/year), electricity bill €450.
Traditionally: Drawing from grid, no options.
After DRBO Greenenergy balcony power plant: 300 kWh self-generated electricity, bill drops to €330.
Key benefits: €120 savings, 0.15 t less CO2.

Scenario 2: Couple with home office
Problem: Daily consumption for laptop/refrigerator (2,200 kWh/year).
Traditionally: External chargers, €700 cost.
After installation: 450 kWh covered, app monitoring.
Key benefits: €150 less, energy independence.

Scenario 3: Family in a rented apartment
Problem: Children's room lighting, 2,800 kWh/year, landlord blockade.
Traditionally: High bills, €900.
With DRBO storage set: 500 kWh + storage, bill to €650.
Key benefits: €250 savings, storage for evening.

Scenario 4: Senior apartment
Problem: Low consumption (1,800 kWh), but rising prices.
Traditionally: Dependent on provider.
After installation: 250 kWh self-consumption.
Key benefits: €90 savings, easy operation.

What trends are emerging for balcony power plants?

By 2030, 1 million balcony power plants are to be installed in Germany, driven by EEG amendments and falling module prices. Storage integration increases by 40%, as with DRBO Greenenergy models. Investing now ensures amortization before price increases.

Why should you get a balcony power plant now?

The combination of rising prices and subsidies makes 2026 ideal. DRBO Greenenergy enables quick implementation, reduces dependencies, and measurably promotes sustainability.

FAQ

How much electricity does a balcony power plant save in a small apartment?
It covers 10–30% of demand, i.e., 200–600 kWh annually with 800 W output.

Is a permit required for tenants?
Yes, from the landlord and simplified with the grid operator up to 800 W.

How long does a balcony power plant last?
Modules 20–25 years, inverters 10 years with warranty.

Can a storage unit be retrofitted?
Yes, DRBO Greenenergy offers compatible balcony storage units in 1–5 kWh.

Which orientation is optimal?
South or southeast, tilt 30–40 degrees for maximum yields.

Sources

Some information in this article is sourced from the internet. Product specifications may be updated at any time. For the latest information, please visit the official website or product page.