Top 10 Renewable Energy Startup Investors in Portugal in September 2025

Last updated: Sep 2025 A list of 10 angel investors and VC (Venture Capital) funds that invest in Renewable energy startups based in Portugal. We rank investors based on the number of investments they made in Renewable energy companies from Portugal. We update this investor list every month.

Top 10 Renewable Energy Startup Investors in Portugal in September 2025

Investor	Renewable Energy Portugal investments
Caixa Capital	2
Wayra	1
HCapital Partners	1
Acumen	1
Marc de Jong	1
FORWARD.one	1
Egis	1
Betwixt Ventures	1
Carlos Oliveira	1
G7 Renewable Energies	1

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Investor list

Caixa Capital is the Private Equity and Venture Capital arm of banking Group Caixa Geral de Depósitos and has a track record spanning over two decades of activity, since the industry was created in Portugal. It is a leading investor in terms of funds under management, portfolio size and diversity.Caixa Capital´s mission is to invest in fundsand companies, led by highly qualified management teams, with high growth and valuation potential, that enable our funds to achieve an attractive risk adjusted return and for society at large to benefit sustainably from our activity.Currently with more than 700 million Euros under management and a portfolio of over 80 investments, Caixa Capital is a reference in this area with special links to the respective European sector associations.

Investment focus

Software, Information Technology, SaaS
Seed, Series A, Funding Round
Portugal, United States, Spain

Portfolio highlights

HiJiffy — Increase direct bookings and upselling with HiJiffy's AI-powered communication solutions for hospitality.
Noxus — At Spot, we're crafting the operating system for tomorrow's workforce, harnessing AI to streamline influencer marketing. Our platform empowers agencies, businesses, and content creators to collaborate effectively and reach audiences with ease.
Infraspeak — Infraspeak is an Intelligent CMMS Software that brings outstanding flexibility, connectivity and intelligence to your operations.

Wayra is a globally connected and technological open innovation hub in the world. We currently operate in 10 countries: Argentina, Brazil, Chile, Colombia, Germany, Mexico, Peru, Spain, the United Kingdom, and Venezuela.Through Telefónica our global presence allows us to be at the helm of innovation, shoulder to shoulder with drivenentrepreneurs and in a position to engage the right partners and leaders of industries for business. Our mission is clear, to connect innovators with Telefónica and generate joint business opportunities. We are the interface between Telefónica and entrepreneurial ecosystems across the globe because innovation makes good business sense.

Investment focus

Software, Information Technology, SaaS
Seed, Funding Round, Pre-Seed
Spain, United Kingdom, United States

Portfolio highlights

Kunzapp — Kunzapp, ayuda a las empresas a maximizar su presupuesto, eficiencia y seguridad, eliminando gastos innecesarios, haciendo visibles los “Shadow IT”, y consiguiendo ahorro de miles de dólares al año.
Remuner — Say goodbye to spreadsheets. Remuner is the sales compensation software that automate your commissions and drive performance.
Openlayer — Test, monitor, and govern AI systems from ML to LLMs. Openlayer's enterprise platform brings unified AI evaluation, observability, and governance to every stage of the AI lifecycle.

We are an independent private equity firm, investing in a broad spectrum of companies through dedicated funds.

Investment focus

Software, Artificial Intelligence, Information Technology
Seed, Funding Round, Series A
Portugal, Spain, Switzerland

Portfolio highlights

Automaise — Radically improve your customer care operations by focusing where the volume is and helping your agents do a better job.
Libattion — Sustainable, modular, grid-scale battery energy storage solutions with CO2-certificate. For industrial and commercial applications.
Eneida — Operational Analytics LV Apps, software and smart sensor for LV Network Monitoring, Control, and Visibility

Acumen is a nonprofit venture fund that invests in early-stage companies bringing critical services like agriculture, clean energy, education, financial inclusion, healthcare and workforce development to low-income communities in 14 countries across East and West Africa, South Asia, Latin America, and the United States. Since 2001, Acumeninvested $128 million in 128 companies that have transformed the lives of over 308 million low-income people.

Investment focus

Agriculture, Health Care, Financial Services
Seed, Funding Round, Series A
United States, India, Kenya

Portfolio highlights

Wami Agro — Revolutionizing agriculture with cutting-edge digital solutions and sustainable practices.
Ampersand — Ampersand catalyzes and power mass-market electric mobility. By supplying the battery swap network and operating system the company makes sustainable mobility rapidly accessible and affordable for developing markets, to improve livelihoods and the environment. With over a million km already covered by e-motorcycles in Africa using our plug-and-playpowertrain and energy network.
BioMassters — Biomassers aim to replace charcoal production and charcoal cooking by providing modern, affordable, and low-carbon pellet fuel production and cooking solutions based on locally produced fuel from waste materials.

Marc de Jong has had an extremely successful career with Phillips where he was previously a member of the Royal Philips Group Management Committee. He was CEO of various divisions within Philips and CEO of the automotive and identification businesses of NXP Semiconductors before beginning his own management consultancy. Marc de Jong holds aMasters in Physics and Mathematics from the Free University of Amsterdam, further qualifications in Economics and two MBA’s, one from the University of Rochester in the United States and another from the Erasmus University, Rotterdam.

Investment focus

Sensor, Software, Wind Energy
Seed
Portugal

Portfolio highlights

Fibersail — “If you cannot measure it, you cannot improve it” (William Kelvin)Fibersail develops a shape sensing system based on FBG fiber optic research and development to monitor and analyze wind turbine blades in terms of shape, condition, and behavior. The real-time information provided by our system will help wind turbine operators maximize performanceand availability while preventing failures and minimizing maintenance costs from their assets.Our unique solution and approach with fiber optic sensors make it possible for a very easy and simple integration along the entire length of any critical structure ensuring the monitoring of its precise shape and behavior.Fibersail - Shaping the structures of tomorrow.

We are a leading non-profit establishing new relationships between agriculture and nature. Protecting the natural world and treasured wildlife.

Investment focus

Information Technology, Semiconductor, Audio
Seed, Series A, Funding Round
The Netherlands, Germany, Sweden

Portfolio highlights

Optics11 — Experience the cutting-edge of fiber optic sensing solutions with Optics11, a global leader empowering data-driven decision-making for a secure society. Optics11 specializes in reliable, highly sensitive, and accurate monitoring solutions, catering to the critical needs of sectors such as energy and defense. Trusted by industry leaders such as Airbus and Sony, these solutions enhance operational efficiency through real-time data monitoring. In the energy sector, Optics11's technology excels in partial discharge monitoring for transformers, cable joints, and switchgear across diverse settings. This technology is specifically engineered to protect vital assets, ensuring their safe and reliable operation, while minimizing downtime. In the defense sector, Optics11 offers advanced systems that provide situational awareness and bolster security. These solutions help military organizations detect and locate threats, monitor perimeters, and protect critical underwater infrastructure. With deep expertise in fiber optic sensing and a commitment to progress, Optics11's innovative solutions are leading the way in sensing technology. Embrace data-driven decision-making with Optics11, shaping a more secure and efficient world.
Voltfang — We integrate used electric car batteries into a battery storage system and thus build up a decentralized storage network.
QuiX — The fastest way to a quantum future

Egis is an international engineering, assembly and project management group. In engineering and consulting, he works in the fields of transport, city, building, industry, water, environment and energy.

Investment focus

Energy, Renewable Energy, Natural Resources
Series A
Portugal

Portfolio highlights

RVE.SOL - Solucoes de Energia Rural — Rural populations forced reliance on biomass and kerosene for their energy needs is causing over 1.6M# deaths per annum. Their lack of access to clean water causes over 5M people to die; 2M of them are children under the age of 5.RVE.SOL's _Changing Rural Life Forever_ initiative is creating alternative, renewable energy choices for therural poor, allowing them to take advantage of natural resources like sunlight, cattle manure and raw water to manage their own way to a better future.Our _KUDURA_ rural village energy hub is community managed; provides communities with potable water, solar electricity, biogas for cooking and organic fertiliser for agriculture.A holistic approach, the solution seeks to target the four areas of rural life that prevalently cause poverty to propagate:1. Access to clean water to obviate transmission of water borne disease2. Access to renewable electricity to obviate the dependance on kerosene for light and improve children's opportunity to study at night3. Access to Biogas to obviate mass destruction of primary forest in a bid to be able to cook food4. Access to fertiliser to reinvigorate over-used soils and so increase quality and quantity of crop harvest for subsistence farmers.Ultimately, this approach seeks to create wealth for rural farmers by offering a choie of more cost effective and efficient services utilising naturally available resources.

Betwixt Ventures focuses on bringing together startups with Venture Capital Investors.By raising a pledge fund exclusively targeting investments on early stage startups with high potential, Betwixt Ventures proposes to add value through the following main activities:• Origination, screening, negotiation of deal terms, and monitoring of vettedstartups• Startup follow up, mentoring, consulting and value creation• Attraction of venture capital funds and placement of further investment rounds• Attraction of exit opportunities and facilitation of exit processStarting its capital raise in October 2015, the pledge fund will exclusively target investments on early stage startups typically based out of Portugal. At a second stage, it intends to invest also in Spanish and Italian startups. While no particular industry will be ruled out from the investment scope, the pledge fund will tend to focus on the broad technology and energy sectors. As a pre-requisite, it will either invest in startups previously vetted by other Business Angels, or co-invest in them with other seed or venture capital funds as partners. The focus of the pledge fund will be to invest in the gap between seed and series A rounds. Upon the investment at this stage, Betwixt Ventures will seek to attract further institutional investment rounds, internationally.On top of the pledge fund management, Betwixt Ventures will also offer both financial and general advisory services to startups. The former include either the attraction of venture capital funds for placement of further investment rounds, or the attraction of strategic buyers for potential M&A transactions, mainly in the US market. The later encompass 360 degrees consulting to startups, from marketing & sales, to business development and management.