A €70 million investment round can buy a company more than runway. It can buy time to prove what the business is really becoming.
That is the opportunity facing 1KOMMA5°, the Hamburg-based energy technology company valued at $1.35 billion after its latest financing. Existing backers participated, and Tokyo climate tech fund Marunouchi Innovation Partners, backed by Mitsubishi Corporation, joined as a new investor. The company expects around €700 million in revenue in 2026 and about €40 million in operating profit from its hardware business.
But this round isn’t just a bet on selling more solar panels, batteries, heat pumps and EV chargers. Most of the new money is intended for Heartbeat AI, 1KOMMA5°’s software platform, which connects those devices and coordinates how they use or supply electricity.
For founders and operators outside the energy sector, that distinction is worth watching. The deal points to a broader growth-capital thesis: investors are paying attention to companies that can turn a physical product into an ongoing service, and to businesses that know how to expand without letting ambition outrun execution.
From installed hardware to an intelligent network
A solar panel or home battery is useful on its own. Connect enough devices, however, and software can coordinate them: shifting when they consume or store power, then responding to changing energy conditions. That network can be valuable to households and potentially help balance the wider electricity system.
Heartbeat AI brings household solar panels, batteries, heat pumps and EV chargers into one platform. 1KOMMA5° says it currently controls one gigawatt of shiftable capacity, twice the level of a year earlier, and has set a goal of 20 gigawatts by 2030. Its software annualized revenue reached about €30 million in August.
That matters because equipment sales often create revenue at a single point in time, while software can support a continuing customer relationship. If the company can make its platform useful over the long term, it may have opportunities to generate recurring revenue from the systems already installed.
The model still has to work in practice. Software must reliably communicate with many types of equipment, customers need a reason to stay enrolled, and the company has to show that the service performs at scale. A rising valuation is not proof that those challenges have been solved. It is a sign that investors believe they are important, and that 1KOMMA5° may be positioned to tackle them.
Why investors are backing the combination
The round values 1KOMMA5° at $1.35 billion, about 35% higher than its July 2025 valuation, according to the company’s announcement. The company says the fresh funding will support Heartbeat AI, while its profitable hardware business gives it a commercial base to build on.
That combination may help explain the appeal: the business is not asking investors to fund software in a vacuum. It has installed equipment, customers and operations across Germany, Sweden, Finland, Denmark, Spain, the Netherlands and Australia. Founded in 2021, it has raised nearly €400 million in equity.
In other words, there is a physical business beneath the technology story. Hardware puts systems in homes; software may make those systems more valuable over time. If the platform’s usage and revenue grow alongside the installed base, it could become a more durable engine than equipment sales alone.
There is also a wider market backdrop. Electricity demand is rising, renewable generation is growing, and homes and businesses are adding devices that draw on or store power. Coordinating supply and demand is becoming a commercial problem as well as a technical one. Energy technology companies that can make that coordination useful, and economically viable, are drawing attention.
The expansion plan is a test, not a victory lap
The company is considering entering the US market in 2027. It is a significant potential step, but not yet a confirmed launch. CEO Philipp Schröder, formerly country director for Tesla Germany, has said the company’s performance in 2027 will help determine the timing of a possible IPO. The company shelved earlier US IPO plans in 2025.
That approach offers a useful counterpoint to the familiar “go global now” story. A large addressable market does not automatically make a new geography the right next move. Local rules, customer habits, installation capacity, energy-market structures and competition can all change the economics.
The presence of a new investor with experience in US energy, AI and flexibility may bring useful knowledge as the company assesses the market. But local expertise can’t replace operational proof. A new market still needs a clear customer proposition, reliable delivery and a path to sustainable margins.
For operators, the lesson is simple: expansion is a series of decisions, not a trophy. Set the milestones that would justify entry, identify what must be learned first and be willing to adjust the timeline if the evidence says to wait.
Four takeaways for founders and business owners
1. Build the service around the product.
If your business sells a physical product, ask what customers need after the initial purchase. That could be maintenance, monitoring, training, financing or a software layer. The strongest recurring-revenue ideas solve a real ongoing problem, not just a revenue-planning problem.
2. Measure adoption, not just ambition.
A 20-gigawatt goal captures attention. For a founder, the more useful questions are how fast capacity is being added, whether customers are actively using the service and whether usage produces sustainable revenue. Translate the big vision into milestones you can check regularly.
3. Protect the engine that funds the next bet.
1KOMMA5° is directing new capital toward software while maintaining a profitable hardware business. Smaller companies may not have that flexibility, but the principle still applies: understand which part of the business pays the bills, and don’t weaken it without a credible plan for what comes next.
4. Match valuation to execution.
A higher valuation can support hiring and growth, but it also raises expectations. For your own business, focus on the operating evidence behind the story: customer retention, margins, cash flow and repeatable sales. A clear explanation of those fundamentals is more durable than a headline number.
The signal behind the €70 million
The headline is a funding round. The deeper story is a shift in what makes an energy business compelling: the physical infrastructure matters, but so does the software that can coordinate it, serve customers over time and potentially create value beyond the original sale.
1KOMMA5° has real tests ahead. It needs to grow Heartbeat AI, reach its capacity target, show that software revenue can scale and decide whether the US is the right next market. Investors are backing the possibility, not guaranteeing the outcome.
For businesses in any sector, that is the practical takeaway. Growth capital tends to follow a convincing combination of customer demand, a working commercial foundation and a credible next layer of value. Build those pieces in sequence, and expansion becomes less about chasing the biggest headline, and more about earning the right to take the next step.
