15k Angels invests smart capital in equipment to power seed and early stage projects. The company looks for investment opportunities in projects with rapid growth capacity and high profitability. It focuses on improving the invested projects, so that it can generate metrics and traction and move on to early stage or growing. The company achieves this by working with promoter teams to produce maximum value, contacts, and energy, at no cost to the projects invested. It facilitates access to investors for the following rounds, to banks and private financing, and to obtain the necessary technology. 15k Angels was founded on 2017 and is headquartered in Madrid, Spain.

15k Angels

COREangels is a global brand of hands-on angels, investing in early stage startups through local portfolio funds. Our funds invest in a portfolio selected by the angels from a pool of startups curated by the leaders. Our angels are doing an incredible job of contributing to their local communities by, not only investing their money in the next generation of entrepreneurs, but also mentoring them, with their experience and network.  COREangel funds are co-investing cross borders, sharing good practices, tools and opportunities using one proven model that merges financial outcomes with angel involvement.

COREangels

Climate-KIC Spain is the Spanish Center for Innovation in Climate Change which belongs to the European Climate-KIC initiative, one of the knowledge and innovation communities promoted by the European Institute of Innovation and Technology (EIT). Its mission is to enhance and facilitate the development of a low-carbon economy, through new opportunities in the field of climate change in the Mediterranean geography.  EIT Climate-KIC Accelerator Spain is a program to accelerate innovative ideas to address global warming.

EIT Climate-KIC

WAISENSE

WAISENSE s a technology-based engineering company founded in 2018, specialised in product development and innovation offering R&D and innovation consulting services in:  i) hardware and software development for different clients, from the original design, prototyping and industrialisation of products; and ii) innovative business development consultancy for collaborative and technological projects and other activities such as market research, patents and trademarks, marketing, competition, graphic design, among others. WAISENSE track record includes patents in 17 countries, 37 smart-city projects,  +150 events and interviews, + 24 publiched reports, +30 awards and recognitions, 45 products developed, +500 tons CO2 emissions avoided with our products and the ones we develop for our customers and +4M€ in private and public collaborative projects across Europe.    WAISENSE is the current brand name  designates its internationally patented, eco-efficient and innovative solutions for improving the water efficiency of plumbing installations in a variety of applications. Incorporates: a) hot water recirculation without adding a dedicated return line  b) leak detection and stoppage; c) IoT water-metering; d) smart irrigation functionality; e) freezing risk prevention; f) online monitoring and control of each previous function; g) smart-speakers and other systems/platforms compatibility and many more functions patented. We are developers, manufacturers and marketers of WAISENSE technology, which generates a reduction of costs in projects and installations, an improvement in the quality of life of users and customer service and an increase in property value, among other advantages for the SmartHome and SmartCity segments.

WAISENSE is a global brand offering a suite of physical and digital solutions aimed at increasing water efficiency across multiple sectors. Its flagship product is WAISENSE COMFORT, also marketed as NESS Technology in Spain under the brand names Presto Go System and Galindo Confort System. WAISENSE COMFORT is a system designed to eliminate water wastage during the delay in receiving hot water from the heater to the point of use.

Global water innovation

WAISENSE: Smart Water Living

Smart home systes for water saving

WAISENSE GLOBAL

Ahorrar agua usando tecnología

Smart Homes: Energy & Water Solutions

WAISENSE is a global brand offering a suite of physical and digital solutions aimed at increasing water efficiency across multiple sectors. Its flagship product is WAISENSE COMFORT, also marketed as NESS Technology in Spain under the brand names Presto Go System and Galindo Confort System. WAISENSE COMFORT is a system designed to eliminate water wastage during the delay in receiving hot water from the heater to the point of use.
The system comprises modules that communicate wirelessly. When the activator module is triggered, it initiates water recirculation from the heater. A blue light indicates the recirculation is active, while a red light signals that the water has reached the desired temperature. Upon turning on the faucet, hot water is instantly available, preventing the wastage of liters of cold water. WAISENSE COMFORT can be installed in new or existing buildings without renovation and is compatible with any individual water heater type.
WAISENSE COMFORT offers substantial water savings of up to 25 liters per use, translating to reductions of up to 52% in water bills. The technology enhances user comfort by eliminating wait times for hot water. As of 2024, WAISENSE has acquired global recognition for its sustainable solutions, receiving numerous awards for its environmental impact and business activity.

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.

WAISENSE

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