Hamburg-based 1Komma5°, a company specializing in clean energy technologies for individuals, is launching a unique product: PowerHarvester, a home battery capable of storing low-cost electricity and releasing it when prices rise. The innovation: this system works even without solar panels, a first for the brand.
No panels? No problem
Available in six configurations ranging from 7.7 kWh to 27.2 kWh, this lithium-iron-phosphate battery is aimed at households looking to reduce their electricity bills by adjusting to market price fluctuations. The starting price is €8,900, including installation. The pack also includes Heartbeat AI, a smart energy manager, as well as a connected meter essential for monitoring prices in real time.
The principle is simple: when prices fall on the electricity exchange, the system automatically buys. And when they rise, the electricity can either be used by the household or resold, thus maximizing profits. "The real problem with the energy transition is not renewable energy, but an overly rigid network, without smart meters or sufficient storage capacity," laments Jannik Schall, product manager at 1Komma5°.
To access this optimization, customers must subscribe to the company's "Dynamic Pulse" dynamic tariff and pay a monthly subscription of €9.90 for the Energy Trader tool. This digital service manages purchasing and resale operations on behalf of the user.
According to data collected on nearly 50,000 energy systems, savings can reach up to 50% on the electricity bill. The investment would be amortized in six years for homes consuming more than 10,000 kWh per year, a threshold quickly reached by households equipped with heat pumps, electric vehicle charging stations, or energy-intensive appliances.
Another technical advantage is that the system is now compatible with all inverters and charging devices, thanks to a complete overhaul of the energy management software. No more obligation to purchase compatible hardware: an advancement that could broaden the adoption of the PowerHarvester.
Not everything is necessarily rosy for the startup, which has had to put two major projects on hold. It is abandoning for the time being the idea of manufacturing its own solar modules in Germany, an activity deemed too expensive due to energy and labor prices. A 1 GW factory project planned for 2024 in the east of the country has therefore been postponed indefinitely.
The same decision was made regarding the IPO: the economic context, particularly recent import taxes, has prompted management to take its time.
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