Electricity from the sky, directly into your socket. A balcony solar system is the simplest and cheapest way to generate your own solar power in 2026. No roof renovation, no expensive installation, just place it on the balcony, plug it in, and save.
Especially practical for heat pump owners: With a small balcony solar system, you immediately lower your electricity bill and make your heat pump even more cost-effective. Here are all the current figures, exact registration steps, and a clear answer to the question: Is it really worth it in 2026?
A compact plug & play solar system with a maximum feed-in power of 800 watts. You simply plug it into your home grid via a standard Schuko socket, the electricity is consumed immediately where you need it (fridge, washing machine, or your heat pump).
No electrician needed, no building permit, ready in 30 minutes.
Feed-in power: max. 800 watts (inverter)
Module power: up to approx. 1,400 watts peak (Wp)
Registration: Only in the Market Master Data Register (MaStR) of the Federal Network Agency, free and online in 5 minutes
Electricity yield: 400–800 kWh per year (depending on orientation and location)
Savings: €120–240 per year (at €0.30/kWh electricity price)
The Solar Package I made everything much easier in 2024, and the rules continue to apply in 2026.
| Type | Price | Annual Yield |
|---|---|---|
| Entry-level (400 W) | €350–500 | approx. 350 kWh |
| Mid-range (600 W) | €500–700 | approx. 500 kWh |
| Premium (800 W + battery) | €700–1,200 | 650–800 kWh |
Prices include mounting bracket and cables. A good mid-range set for €600 is the sweet spot for most balconies.
Make your heat pump even cheaper now
Free calculator, no registration, see instantly how much electricity your heat pump really needs and how a balcony solar system helps
Open free calculator now →With a €500 set and a realistic yield of 500 kWh/year, you save approx. €150 per year (at €0.30/kWh).
→ Amortization in just 3–4 years.
After that, you produce almost free electricity for 15–20 years. With a battery, amortization takes a bit longer, but you use almost 100% of your solar power yourself, perfect for the heat pump.
Choose south orientation, the biggest lever for high yield.
Combine with heat pump, self-generated electricity makes your heating costs even more attractive.
Retrofit battery (for premium sets), so you use the electricity in the evening and winter too.
Storage is the biggest cost item in a balcony solar system and at the same time the component people argue about most. Without storage, the generated power flows directly into your consumption, refrigerator, washing machine or the heat pump. What you do not use at that moment is fed into the grid, for which there is no meaningful compensation.
A storage unit of 1 to 2 kWh shifts the power into the evening, when the system's yield is long gone but consumption continues. That noticeably increases your self-consumption, especially in a household with a heat pump. But the price rises too: an 800W set with storage costs 700 to 1,200 EUR instead of 500 to 700 EUR without. If you want the shortest amortization, start without storage and upgrade later, once prices have fallen further.
❓ Do I have to register the balcony solar system?
Yes, but it's super easy: Just once online in the Market Master Data Register (MaStR) of the Federal Network Agency. Costs nothing and takes 5 minutes. No more registration with the grid operator needed.
❓ Am I allowed to just plug it into the socket?
Yes, that's exactly what plug & play systems are made for. Just pay attention to a good inverter with Schuko plug.
❓ Is a balcony solar system worth it even without a heat pump?
Absolutely! Every household saves €120–240 per year with it. With a heat pump, the benefit is even greater because you consume a lot of electricity.
❓ Is there still funding for balcony solar systems in 2026?
No nationwide direct grant funding, but 0% VAT continues to apply. In some federal states and cities, there are small regional grants (€50–500).