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Energy
By
David Wölfle
1.5.2025
6
Min.
Prices are rising, climate change is advancing – and many people are asking themselves: How can I save money and do something good for the environment at the same time?
The answer is simple: with a solar system. In this article, we’ll show you why a photovoltaic system is not only environmentally sound but also a truly smart financial investment. You’ll also learn how, as an Ostrom customer, you can get even more out of your system with a battery storage and our dynamic tariff – and how you can secure a 1000 € discount on a new PV system.
Installing a solar system on your roof is more than just a contribution to climate protection – it’s an investment in your future. That’s because electricity from your own roof costs only a fraction of what you would otherwise pay to a utility company.
Typically, the initial investment pays off in 9 to 15 years. But since modern systems last 25 years or more, you benefit from long-term, low-cost electricity.
In addition, the value of your property increases. Homes with solar systems are especially attractive to buyers. Plus: Government subsidies help reduce the upfront costs.
1. Self-consumption instead of expensive grid electricity: You use the electricity you generate yourself – and save real money every month. While grid electricity costs 30 to 40 cents per kilowatt hour, your solar electricity costs only about 10 cents.
2. Earn feed-in compensation: Excess electricity you don’t use is fed into the public grid – and you get paid for it. That makes your system even more profitable.
3. Independence from electricity price fluctuations: With a solar system and a storage unit, you become more independent from rising electricity prices. You produce your own power – reliably and predictably.
Many people ask: Should I get a battery storage unit right away? The answer is: In many cases, yes.
A battery lets you use your solar electricity even when the sun isn’t shining – like in the evening or at night. This significantly increases your self-consumption rate. Instead of using only about 30 % of your own electricity, a battery can boost that up to 70 %.
The storage unit becomes especially attractive when combined with a dynamic electricity tariff!
A dynamic electricity tariff like Ostrom’s is based on the hourly changing stock market price for electricity. This means: If you adjust your usage flexibly, you can take advantage of low-cost hours – for example, when charging your home battery or EV.
If you have a storage unit, you can charge it with low-cost grid electricity – and use it later when prices are higher. This allows you to use electricity especially efficiently and save even more.
The combination of solar system, battery, and dynamic tariff is the smart way to minimize your electricity costs.
You’re convinced and ready to get started? Then we’ve got great news: Together with Otovo, we’re offering you an exclusive 1000 € discount on your new solar system.
The 1000 € discount is exclusively available to Ostrom customers! Not yet an Ostrom customer? Then switch to us now and request a free quote for your solar system from Otovo in the Ostrom App.
Otovo handles the entire process for you – from planning to installation. You can also add a battery and wallbox if you wish.
🔗 Switch now and secure your 1000 € discount in the Ostrom App!