Energy Startups

RedElfi develops renewable energy infrastructure to support the energy transition, preparing sites to host new energy facilities. The company operates in the green energy sector across Italy and the USA.

1 investor

Redeux develops utility-scale solar and battery energy storage projects to support the US transition to a clean, reliable electric grid. The company transforms various land types into renewable power projects that generate revenue and support local economies.

1 investor

APX operates the TIGR Registry, a global platform for tracking, trading, and retiring Renewable Energy Certificates (RECs) from renewable energy projects across over 40 countries. The platform enables corporate buyers, energy retailers, and project developers to manage renewable energy transactions and verify environmental attributes in compliance with international standards.

1 investor

Redoxion develops advanced cathode materials for lithium iron phosphate (LFP) batteries using sustainable, locally-sourced manufacturing methods. The company serves energy storage companies and the broader clean energy sector seeking cost-effective, environmentally responsible battery components.

1 investor

Redtech is a fintech company offering digital payment solutions (RedPay) and an energy technology platform (SITCOM) aimed at addressing financial and infrastructure challenges across Africa. It serves banks, businesses, and institutions with payment and energy tech products.

1 investor

Reduced Energy Microsystems (REM) designs low-power silicon chips for embedded computer vision, combining asynchronous resilient technology with a custom neural network architecture to run deep learning inference and traditional vision workloads in a small power envelope. Its chips target devices such as augmented reality hardware, body-worn cameras, and autonomous robots.

1 investor

Reduxi builds an AI-based electricity management system with hardware controllers, gateways, and converters that connect solar plants, energy storage, heat pumps, and EV chargers to optimize energy production, storage, and consumption. It targets businesses and partners, offering smart EV charging and grid services to reduce energy costs and support grid stability.

1 investor

Reebeez builds solid-state thermoelectrophotovoltaic (TEPV) microengines for unmanned aerial vehicles that run on lightweight combustible fuels, aiming for longer flight times and higher payloads than lithium polymer batteries and fuel cells. The propulsion system targets small aerial vehicles with higher specific energy at lower cost.

1 investor

Reelwell develops wired drillpipe technology for the oil and gas downhole drilling sector, offering digital telemetry, power delivery, and improved reliability for both land and offshore drilling operations. Its technology aims to reduce well construction costs and environmental emissions through drilling efficiency gains.

1 investor

Refraction Energy is an oil and gas company operating in the upstream energy sector, with a focus on unconventional plays in Canada such as the Duvernay and Montney formations.

1 investor

Regeno develops modular, plug-and-play wind turbines designed for rapid deployment and lower costs than traditional systems. The turbines are built from stackable components, require no cranes for installation, and are targeted at businesses seeking renewable energy with shorter payback periods.

1 investor

Reliance Production Optimization operates natural gas assets and provides daily operations, optimization, and maintenance services for sweet natural gas producers. The company serves oil and gas operators seeking cost reductions and improved asset management through field-deployed teams and specialized optimization expertise.

1 investor

Relode develops transmission-connected battery storage and electric vehicle charging infrastructure on the UK electricity grid, drawing on expertise across grid, planning, and engineering. It focuses on electricity infrastructure development and delivery in the United Kingdom.

1 investor

Remea offers a platform for EV charging station operators and businesses, providing real-time data, access management, customizable pricing, and monthly reports, alongside a web app that lets drivers scan, pay, and charge without downloading anything.

1 investor

Remix Point develops renewable energy and battery storage solutions to provide stable, distributed electric power and create sustainable energy systems for communities and regions.

1 investor

Remote Energy is a 501(c)(3) nonprofit founded in 2017 that trains technicians, educators, and community members in solar energy installation and maintenance across developing countries. The organization works to increase access to reliable renewable energy in marginalized communities while addressing racial, gender, and economic disparities in the solar industry.

1 investor

Remote Power Corp designs and manufactures modular, mobile, natural gas and propane-powered generation systems for temporary and on-demand power applications across various industrial and project-based sectors.

1 investor

REN Power CZ a.s. and REN Power Investment a.s. own and operate solar power plants and wind farms in the Czech Republic and other European Union countries. REN Power CZ also holds a majority stake in Fit Craft Services s.r.o., a service organization for photovoltaic power plants.

1 investor

Renalfa develops and operates renewable energy assets, including solar, wind, and grid-scale battery storage systems across Eastern Europe. The company serves the energy transition market in the region with a portfolio exceeding 1 GW of operating power capacity and 2.5 GWh of storage across Hungary, Bulgaria, Romania, North Macedonia, Lithuania, and Poland.

1 investor

Rendesco designs, installs, and operates heat pump and battery storage systems for residential and commercial properties to reduce energy costs and carbon emissions. The company provides end-to-end solutions including compact cylinder-free heat pump systems, cloud-based optimization platforms, and funded clean heat networks for developers and social housing projects.

1 investor

Reneon Tech provides sensors, gateways, and software platforms for building managers and energy professionals to monitor and analyze energy consumption. The company also supplies green technology products and offers consultancy services to help buildings and cities improve energy efficiency and achieve net zero emissions.

1 investor

Renewable Power International Partners (RPI) is a Spanish company owned by its management team that develops, builds, acquires, finances, and operates wind, hydroelectric, and photovoltaic power generation plants, including O&M and asset management services. It works with industrial partners, institutions, family offices, and private investors across renewable energy investment platforms, currently operating in Spain and Portugal.

1 investor

Renewcast provides short-term and intra-day wind and solar power generation forecasting as a service, using deep learning digital twin models on an Azure cloud platform to help energy operators reduce imbalancing costs. Its forecasts are delivered via API and a client UI for traders and energy operators managing renewable portfolios.

1 investor

Renewvia designs, installs, owns and operates commercial, community, and utility-scale solar power systems and energy storage assets across the United States and Africa for businesses and off-takers. The company provides turnkey solar installation, integrated financing, consulting, and operations services for commercial clients and develops microgrids in underserved regions.

1 investor