Summary

• A €70 million financing round values 1KOMMA5° at about $1.35 billion.
• The company plans more than €100 million of Heartbeat AI investment in 2027.
• Returns depend on connected assets, electricity-market access and measurable customer savings.

German energy technology group 1KOMMA5° has raised €70 million in a new financing round that values the company at approximately $1.35 billion, adding capital as its Heartbeat AI platform becomes a larger part of the business. The Hamburg company plans to invest more than €100 million in the software operation next year, according to comments given by its chief executive Philipp Schröder to Reuters on 12 October.

The financing involves existing and new investors, with Japanese cleantech investor Marunouchi Innovation Partners identified among the participants. It follows a period in which the company has tried to connect the installation of household energy equipment with ongoing software and electricity services. Its proposition depends on coordinating appliances after they have been installed, rather than treating a solar panel or heat pump as the end of the customer relationship.

Heartbeat AI is designed to manage the interaction between household solar generation, batteries, heat pumps, electric vehicle charging and wholesale electricity conditions. The software can shift consumption towards periods when local generation is available or market prices are more favourable, while the company also presents it as an increasingly automated way to administer energy trading, billing and metering. Those are distinct functions: controlling a battery is not the same as successfully monetising flexibility in an electricity market.

Earlier this year the company said its connected virtual power plant had reached one gigawatt of shiftable capacity. That figure refers to an aggregation of assets whose demand or output might be moved in time; it does not mean one gigawatt of continuous electricity generation, nor does it show how much capacity is reliably available in a particular hour. The company also reported that Heartbeat AI subscriptions had tripled after it opened the platform to third-party equipment providers. Both metrics are company disclosures rather than independently audited customer outcomes.

The technology model reflects a wider problem for Europe's electricity networks. Rooftop generation and electric vehicles add flexibility in principle, but neither automatically helps a system operator when networks are congested or demand peaks. Software must forecast when electricity will be needed, respond within operational constraints, and avoid making individual households worse off. The commercial value depends on local tariffs, grid rules, equipment compatibility and the amount of actual controllable capacity.

Hardware installation remains central to 1KOMMA5°'s economics. It sells and connects electrification equipment, while the software needs enough eligible households and market access to justify continuing expenditure on engineering, data services and customer support. It also needs to keep working when a customer changes devices, tariffs or home network configuration. Integration and aftercare can determine whether apparent software margins translate into durable recurring revenue.

The company has said it is considering a US market entry next year and that performance in 2027 will influence any renewed consideration of an American initial public offering. Those remain intentions, not completed transactions. Its previously shelved IPO plans underline how financing conditions and energy policy can affect an installation-led business, even when its software ambitions are growing.

An underlying commercial question is how much of the saving reaches customers. A household may save money by using electricity at a different time, but its net benefit depends on contract charges, equipment investment and the share of market revenue retained by the platform operator. Published shifts in managed megawatts cannot substitute for evidence of recurring margins, customer retention and net household costs.

The €70 million round gives the business capital to develop software while continuing its equipment operations. Its next milestones will be the number of genuinely interoperable connections, independently demonstrable savings and the profitability of coordinating distributed assets across different European markets. Those results, rather than the headline valuation, will indicate whether Heartbeat can turn an installed energy base into a sustainable technology service.

Expansion also presents the difficulty of serving households whose installed equipment comes from several manufacturers. A solar inverter may respond on a different schedule from a heat pump, and the customer may move to a different electricity retailer while retaining the same devices. A software business that hopes to retain customers for years needs integrations that do not depend on one installation partner or a single hardware generation. Its costs may rise as support moves from standardised installations towards existing systems with unusual configurations.

Utilities and network operators will judge aggregated flexibility against operational commitments. Capacity reported as available must correspond to assets that can actually respond, and a successful dispatch has to be measurable against a credible baseline. The financial penalty for failing to deliver can be important even where individual households continue to function normally. That puts forecasting, device telemetry and contractual accountability at the centre of the technology proposition.

The capital announcement contains no independently reported breakdown of spending between software research, installation capacity and geographic expansion. Investors will need to assess whether the platform generates its own repeatable revenue and whether customer acquisition remains dependent on hardware sales. Those questions should become more answerable as the company releases further operating figures.