Led · Series A · Sep 2025

Hamburg-based Suena Energy has built a proprietary Energy Trading Autopilot that uses real-time data, forecasts and AI algorithms to optimise and trade the flexibility of energy storage systems and renewable assets across power and ancillary service markets. The software produces dispatch schedules aimed at maximising revenue while limiting battery degradation and risk. A strategic priority is the fast-growing segment of co-located storage projects, whose operational and regulatory complexity Suena addresses with a flexible, market-adaptive platform. Customers use the product to develop storage projects more quickly, efficiently and profitably, supporting a more decentralised and decarbonised grid. The company has already secured key customers and laid out clear growth plans. Proceeds from the latest financing will fund international expansion, scale the business model, and advance co-location optimisation capabilities. No revenue or user metrics were disclosed in the article.

Led · Series B · Jun 2025

Ostrom is a digital green energy provider that offers households full transparency and control over their electricity via the Ostrom App, combining monthly-cancellable contracts, effortless switching, and 100% certified green electricity. Its product suite includes SimplyFair and SimplyDynamic, which provide electricity at cost and hourly dynamic pricing. The company emphasizes automation and actionable data, using AI to resolve roughly 50% of customer requests and keep teams small and agile. Ostrom plans to accelerate smart meter adoption and expand its NeoGrid™ Virtual Power Plant to connect household devices and electric vehicle batteries for demand-side flexibility. It will subsidise smart meters for customers, scale its virtual power plant, and expand tech capabilities to maximise renewable usage and reduce customer costs. Financially, Ostrom has raised capital to scale rapidly while focusing on medium-term profitability and grid-stability solutions. Ostrom operates a smart energy management platform that helps consumers control and reduce their energy consumption. Its product suite includes the SimplyFair variable electricity tariff, the dynamic-pricing SimplyDynamic tariff with smart meter support, Smart EV Charging, HVAC optimization, Solar PV integrations, and the Ostrom Store for smart home devices, all controllable via an app. The company is B Corp Certified™ and led by CEO Matthias Martensen and CMO/CPO Karl Villanueva. Ostrom intends to use newly raised funds to further expand its product offerings and solar solutions. The company is based in Berlin, Germany. Recent fundraising increased its total known funding to $23M. Ostrom offers a smartphone app and platform that helps consumers manage energy use and reduce bills by enabling smart energy billing, real-time dynamic price tariffs, EV charging and heat pump optimisation. Its core proposition is an "electricity-at-cost" model that on-boards customers for a flat monthly fee and provides real-time feedback on consumption and sustainability. The company emphasizes smart energy management automations and a user experience it says customers love and trust. Founded in May 2021 in Berlin, Ostrom reports month-on-month growth and claims it is already in the top 10% of German energy suppliers by customer metrics. The startup plans to double headcount by the end of 2024, hiring mainly product and tech specialists to execute its roadmap. To date it has raised almost €14 million in total funding, including the new Series A. Ostrom is a green tech startup founded in 2021 in Berlin that builds an all-digital energy service platform aimed at making switching to green energy accessible and affordable. Its product offers one flexible monthly tariff with no lock-ins, end-to-end multilingual support, responsive live customer chat, carbon tracking in its app, and 100% green energy sourced via direct power purchasing agreements (PPAs). The company plans to scale its energy product portfolio and its "super app" within Germany, across Europe and beyond following the new financing. Ostrom says it was built to be lean and automation-first to achieve the lowest cost-to-serve in the market and to disrupt incumbents that rely on manual processes and physical mail. Since its May 2021 launch it has exceeded a seven-digit ARR run rate after six months, grown on average more than 100% month-over-month with negligible churn, and already serves customers in over 400 cities and towns. It ranks among the top 25% of energy providers in Germany and has switched clients from over 150 energy suppliers.

Participated · Series B · Apr 2025

Gradyent offers a real-time Digital Twin Platform that creates a digital copy of entire heating and cooling grids, integrating geographical, weather, and sensor data with physics-based models and AI. The platform lets energy providers optimise system performance, increase operational control, simulate future scenarios, and coordinate multiple energy carriers including heating, cooling, electricity and CO₂. Gradyent reports its technology can reduce CO₂ emissions by up to 10%, lower operational costs, and save up to 2% of capital expenditures; an offline analysis helped Helen close a coal plant, cutting Helsinki heat-production emissions by up to 40%. The company partners with leading energy firms across more than 35 European cities, including Veolia, Shell and Helen, and is piloting industrial use cases such as Shell’s steam grid in Rotterdam. Gradyent will use new funding to expand its Digital Twin Platform, grow its team and accelerate global growth to optimise and transform heating and cooling grids worldwide. Financially, the company has just closed a major growth round to support that expansion. Gradyent is a Dutch climate-tech company founded in 2019 in Rotterdam that builds Digital Twin software to help heating companies optimise district heating systems. Its platform creates a digital copy of a physical heat system by combining geographical, weather and sensor data with physical models and AI. The software enables real-time optimisation and simulations of future situations, which the company says saves on average 20% heat loss, 10% CO2 emissions and 5–10% fuel costs. Gradyent aims to increase the efficiency of existing systems and accelerate the transition to more sustainable, integrated energy systems to deliver affordable, reliable heat. The company has brought in €10 million in funding to support those efforts. Eneco, a long-time customer, joined the round alongside existing investors Capricorn Partners, ENERGIIQ and Helen Ventures.

Participated · Equity · Jan 2025

Fusebox provides modular Software-as-a-Service (SaaS) solutions to help power utilities and commercial and industrial companies integrate renewable energy, storage, and consumption. Its offerings support hybrid site management and can scale into full Virtual Power Plants (VPPs). The company has expanded to 13 global markets. Founded in 2014 and based in Tallinn, Estonia, Fusebox will use the new funding to enhance its SaaS offerings, hire new talent, and strengthen its presence in the EU energy market. In January 2025 Fusebox secured €2.6 million in funding led by Soulmates Ventures, with support from SmartCap, Eneco Ventures and PKO Bank. The article does not specify the financing instrument or details of previous rounds.

Led · Seed · Jan 2024

WeSmart builds a digital one-stop-shop platform to manage and optimize locally produced renewable power for energy communities, aiming to reduce grid congestion and benefit asset owners and consumers. The company targets the European market following adoption of the Clean Energy Package regulation and plans to accelerate deployment of its energy community management platform across multiple European countries. WeSmart intends to develop and improve its existing technologies and explore new ways of promoting energy communities in Europe, including collaboration with Eneco Belgium on project tools. The company is led by CEO and founder François Bordes. Financially, WeSmart announced a €2.0m seed funding round to support product development and geographic expansion. Investors in the round include Eneco Ventures, Wallonie Entreprendre, and participation from existing investors.