The seed investor High-Tech Gründerfonds (HTGF) finances tech start-ups with growth potential and has supported more than 700 start-ups since 2005. With the launch of its fourth fund, HTGF now has about 1.4 billion euros under management. Its team of experienced investment managers and start-up experts support young companies with expertise, entrepreneurial spirit and passion. HTGF’s focus is on high-tech start-ups in the fields of digital tech, industrial tech, life sciences, chemistry and related business areas. To date, external investors have injected about 5 billion euros of capital into the HTGF portfolio via more than 2,000 follow-on financing rounds. In addition, HTGF has already successfully sold shares in more than 170 companies. Fund investors in this public-private partnership include the German Federal Ministry for Economic Affairs and Climate Action, KfW Capital and 45 companies from a wide range of industries. Fund investors in this public-private partnership include the German Federal Ministry for Economic Affairs and Climate Action, KfW Capital and 45 companies from a wide range of industries.

HTGF | High-Tech Gruenderfonds

We are an early stage venture fund backing entrepreneurs that build profitable solutions to fight climate change

Übermorgen Ventures

Accelerating smart green startups, VCs and corporates

Ecosummit

Sparta Capital Ltd. focuses on product development, manufacturing, distribution, sales and service across a range of technologies. The Company's offering includes four different market verticals: transportation, mining, construction and energy (through biomass conversion). These offerings include optimization of energy consumption in the commercial and manufacturing sectors, construction and energy through biomass conversion, energy conservation in mining, and energy savings in transportation. It is focused on the expansion of a range of divisions, including photoluminescent safety products division, energy audit (EMD) division, biomass division and mining division.

Sparta Capital

Eneco Ventures, the investment arm of Netherlands-based energy innovator, Eneco.

Eneco Ventures

Triodos is a global pioneer of sustainable banking. Their mission is to make money work for positive social, environmental and cultural change.

Triodos Bank

Future Energy Ventures is a unique venture capital and collaboration platform that brings together corporate partners and world-class start-ups to shape the future energy landscape.  Future Energy Ventures invests in digital and digitally enabled technologies and business models that have the potential to redefine the future energy landscape. From its operational hubs in Germany, Israel and Silicon Valley, Future Energy Ventures looks for both investments and scaling opportunities for its portfolio globally and new investment opportunities.

Future Energy Ventures

Sunvigo

Sunvigo provides you with cheap solar power from your roof and real green power from the grid.

Sunvigo is a German energy provider revolutionizing the use of solar power for homeowners. Founded in 2020, the company offers a solar power contract that includes the installation and maintenance of a residential photovoltaic (PV) system on the customer's rooftop. Customers only pay for the electricity consumed, without incurring costs for the PV system components. Sunvigo's business model eliminates the complexity and high upfront costs associated with traditional solar system purchases or leases.

Solar startup Sunvigo raises EUR 15 million in financing round with Eneco, Sparta Capital and DKB — Übermorgen.vc

Sunvigo • Industrial Tech

Solar Utility Sunvigo raises EUR 20 million

HTGF Financing Sunvigo

Sunvigo Raises €20M in Funding

Eneco invests in German Solar as a Service provider Sunvigo

Investment Triodos Energy Transition Europe Fund

Solarenergie rund um die Uhr mit Sunfarming

Smart Homes: Energy & Water Solutions

Sunvigo is a German energy provider revolutionizing the use of solar power for homeowners. Founded in 2020, the company offers a solar power contract that includes the installation and maintenance of a residential photovoltaic (PV) system on the customer's rooftop. Customers only pay for the electricity consumed, without incurring costs for the PV system components. Sunvigo's business model eliminates the complexity and high upfront costs associated with traditional solar system purchases or leases.
The company's smart solar-as-a-service solution maximizes the value of residential solar power systems by integrating them into a virtual power plant. This virtual power plant optimizes onsite solar power consumption and markets excess solar electricity within the Sunvigo community or to the power market. Sunvigo also offers battery storage, electric vehicle charging solutions, and a green grid power plan as part of its energy offerings.
Since its inception, Sunvigo has experienced rapid growth, increasing its customer base tenfold in 2021. By the end of 2023, the company had expanded its team to 130 employees and secured EUR 19.5 million in funding from investors such as Future Energy Ventures, Triodos Energy Transition Europe Fund, Eneco Ventures, Sparta Capital, High-Tech Gründerfonds, and Übermorgen Ventures. The raised capital will be used to scale Sunvigo's solar-as-a-service proposition and further develop its virtual power plant.

Swell Energy is a provider of virtual power plant (VPP) programs that aggregate and optimize distributed energy resources (DERs) such as rooftop solar and battery storage systems. The company's GridAmp software platform utilizes AI and machine learning to coordinate these DERs across the grid, intelligently meeting fluctuating energy demand. This helps utilities deliver cleaner and more reliable energy to customers while reducing dependence on fossil fuel peaker plants.
Swell partners with utilities, customers, and third-party service providers to create VPPs. Through these programs, customers receive bill savings, compensation (GridRevenue), and enhanced energy security. In return, their solar-powered batteries are integrated into a network that supports grid reliability, stability, and potential cost reductions for utilities.
As of November 2022, Swell had contracted 600 MWh of VPPs across 26,000 energy storage systems in homes and businesses throughout the US. These VPPs provide grid services in utility territories like Hawaii, California, and New York. In Hawaii, Swell's 80 MW VPP helps the utility maximize wind energy utilization by storing excess wind power in customer batteries.
In December 2022, Swell partnered with Sacramento Municipal Utility District (SMUD) to launch a residential VPP program aiming for 20 MWh and 10 MW of renewable capacity initially, with potential to scale up to 54 MWh and 27 MW.
In February 2024, Swell acquired residential and commercial solar installer Renu Energy Solutions, expanding its footprint across the Southeast and Mid-Atlantic markets. The combined company aims to drive innovation and provide tailored clean energy solutions through Renu's project development capabilities and Swell's financing and VPP technology.

Swell Energy

ZOLA Electric is a leading emerging market energy technology company that aims to eradicate energy inequality globally. The company's roots trace back to Tanzania, where its founders observed communities lacking access to reliable and affordable energy sources, relying instead on dirty, expensive, and difficult-to-manage forms of energy like diesel, kerosene, and lead-acid batteries.Over a decade ago, ZOLA began by installing smart, connected lithium-ion batteries and solar systems to power basic energy needs such as lighting for rural communities. This approach of deploying networked, connected devices has driven the energy transition in emerging markets. Today, ZOLA has developed the world's first enterprise technology platform, purpose-built for energy access markets, combining a family of products controlled by a single operating system, ZOLA Vision.ZOLA's technology platform enables community-level electrification by facilitating localized solar energy production and providing smart technology with remote management tools. The platform is designed to deliver reliable, affordable, and clean power to the 3 billion people and hundreds of millions of businesses globally that lack access to it.Since its inception in Tanzania, ZOLA has expanded its operations to 10 countries across four continents, delivering affordable, reliable, and clean energy to over 2 million people, along with numerous schools, clinics, and businesses. In December 2022, the company launched its platform in Haiti, partnering with local renewable energy pioneer Haiti Green Solutions to address the country's energy crisis. This marked ZOLA's first market entry into North America.In November 2022, ZOLA commissioned a 120 kWp distributed solar mini-grid system in the Nyagatare district of Rwanda, providing power to over 1,000 homes, businesses, and institutions in the villages of Gakagati I and II. The project, developed using ZOLA's modular INFINITY technology, received support from organizations like Facebook (now Meta), the Shell Foundation, USID, and Endev.

Zola Electric

1KOMMA5° is a carbon-neutral energy systems provider based in Hamburg, Germany. The company offers proprietary energy IoT systems, including "Heartbeat," an intelligent energy management solution that optimizes home energy usage in response to fluctuations in energy prices. This technology allows users to achieve significant cost savings by automatically utilizing renewable energy sources like solar power when electricity prices are lowest.
1KOMMA5° operates a virtual power plant that networks and pools customers' photovoltaic systems, electricity storage, heat pumps, and charging columns, enhancing the profitability and efficiency of these interconnected systems. The company's business model involves investing in electrical sector companies focused on photovoltaic systems, charging infrastructure, and heat pumps, providing them with software solutions, centralized services, bundled purchasing, growth capital, and equity stakes in 1KOMMA5° Holding.
In June 2023, the company acquired the Danish solar company Viasol A/S. As of October 2023, 1KOMMA5° had the capacity to convert 500,000 buildings per year to climate-neutral power generation, heat, and mobility solutions. It operated over 65 sites with around 1,500 employees across Germany, Sweden, Finland, Italy, Denmark, Spain, and Australia.
1KOMMA5° offers a dynamic electricity tariff called "Dynamic Pulse," which guarantees customers the lowest and cleanest electricity at a maximum of 15 cents/kWh for two years. The company's solar modules, produced sustainably in Germany, generate electricity at approximately five cents/kWh, ensuring cost savings and inflation-free energy for over 30 years.

1Komma5°

Bboxx is a UK-founded data-driven platform that provides African consumers with access to innovative products and services, including plug-and-play solar home systems (SHS), solar-powered water pumps, clean cooking solutions, smartphones, and e-mobility solutions. The company utilizes its proprietary fully integrated operating system, Bboxx Pulse, combined with an extensive on-the-ground network to connect customers with these life-changing offerings.Bboxx's core products are solar-powered battery boxes designed for households, enabling users to power small appliances like lights, mobile phones, refrigerators, and computers. The company follows a pay-as-you-go business model, allowing customers to pay for what they use through mobile money, making it affordable for low-income individuals. As of 2020, Bboxx had positively impacted over 3.6 million lives across Africa by providing access to clean energy and other essential products.In September 2022, Bboxx acquired solar home system provider PEG Africa, consolidating its leading position in the market and expanding its geographical footprint to Senegal, Ivory Coast, Ghana, and Mali, bringing its total operating markets to 10 countries. As of 2023, Bboxx's products were actively used by over 643,000 people, resulting in better lighting, improved connectivity, and the mitigation of more than 65,000 tCO2e emissions through the replacement of kerosene lanterns and other fuels.In March 2022, Bboxx launched the Flexx product line, consisting of a portable solar lantern and a multi-light system with charging ports, aimed at serving rural customers at the bottom of the energy pyramid in Rwanda and the Democratic Republic of Congo.

Bboxx

Aquion Energy was a Pennsylvania-Washington D.C. based company that manufactured proprietary Aqueous Hybrid Ion (AHI) batteries and energy storage systems. These saltwater batteries used sodium ions and employed widely available materials like carbon, cotton, saltwater, and manganese oxide as the primary inputs. Aquion's technology was optimized for stationary and long-duration daily cycling applications such as off-grid systems, microgrids, energy management, and grid-scale energy storage. The non-toxic and safe nature of the batteries, combined with their ability to be fully discharged without harm, made them suitable for renewable energy integration and reduced reliance on fossil fuels. Aquion aimed to provide low-cost and sustainable energy storage solutions.
In March 2017, after facing financial difficulties, Aquion Energy filed for Chapter 11 bankruptcy protection and ceased operations, sales, and manufacturing. The company was subsequently acquired by a Chinese-affiliated entity, Juline-Titans LLC, for USD 9 million in June 2017. Following the acquisition, Aquion closed its Pennsylvania plant in September 2017 and reportedly moved operations to China with the new owners intending to scale up by targeting larger commercial clients.

Aquion Energy

Companies that develop advanced energy generation technologies for houses (mostly solar).

Companies that develop battery storage solutions for home use.

Companies that develop real-time energy usage and efficiency monitoring solutions and generate energy reports. Includes companies that offer demand management solutions to monetize excess capacity.

Companies that offer water leak detection sensor systems and smart sprinkler systems.

Companies that assist home improvements (related to energy optimization) by bearing the upfront cost and charging users monthly fees based on energy usage.

Uses AI/ML to monitor and provide recommendations on energy and water usage

Focuses on achieving sustainability through renewable energy, saving and storing excess energy, etc.

Sunvigo

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