Energy Startups

Rainbow delivers hyperlocal weather forecasts using real-time satellite and radar data, with a focus on minute-by-minute precipitation nowcasting up to 4 hours in advance. The company serves multiple industries including logistics, agriculture, energy, media, retail, and financial services through both a consumer app and enterprise APIs.

1 investor

RANA provides an energy-as-a-service platform combining renewable energy infrastructure, AI-driven energy management software, and customer support services. The platform serves customers seeking renewable energy solutions with remote monitoring, flexible subscription models, and augmented reality installation support.

1 investor

Rapid Energy provides temporary boiler and chiller hire across the UK, offering emergency delivery, installation, and commissioning of heating and cooling equipment. It serves businesses and facilities needing urgent heating, hot water, or cooling with a 24/7 rapid response service.

1 investor

Rapid Wire is an underground utility contractor that self-performs directional drilling, potholing/hydro-excavation, trenching, cable plowing, utility route design, and traffic control from locate to restoration. It serves carriers, utilities, DOT corridors, contractors, and residential customers across five U.S. states (Colorado, Wyoming, New Mexico, Texas, and Montana).

1 investor

RAW Charging is a UK-based provider of electric vehicle charging infrastructure for commercial destinations, with a focus on the hospitality, retail, and leisure sectors. The company operates charging points at major attractions including Merlin resorts, McArthurGlen retail parks, and National Trust properties.

1 investor

RC Labs makes battery management systems for electric vehicles and stationary grid storage. Its modular, chemistry-agnostic BMS combines real-time cell monitoring with thermal modeling to manage safety and extend usable battery life, and is designed to support reuse and recycling of packs.

1 investor

RCG Lighthouse provides Lighting as a Service (LaaS), replacing clients' existing lighting with energy-efficient LED systems at no upfront cost and earning revenue from a share of the resulting electricity savings. It serves businesses, municipalities, and retail/shopping centers, handling installation, maintenance, and 24/7 energy monitoring under multi-year contracts.

1 investor

Revolutionary Concepts Ltd designs and produces oil-free, modular multistage centrifugal air compressors and on-site nitrogen generation systems with patented interstage cooling to cut energy use by roughly 30%. Its systems (20kW to 300kW) serve industrial customers in food, pharmaceutical, and metal-cutting production, focused on lower operational costs and reliability.

1 investor

RDDL provides a data and intelligence layer for electricity grids, using cryptographically secured hardware and sub-10-second telemetry to measure activity behind the smart meter for households, SMEs, and microgrids. It links this data to a Bitcoin-anchored settlement layer so PV surplus, flexibility, and demand response can be verified and turned into settleable value for prosumers, aggregators, and DSOs.

1 investor

ReachPS develops surface-powered artificial lift and frac hit recovery systems for oil and gas production operators. The company's solutions enable production acceleration, well intervention-free operation, and emissions reduction in complex well completions.

1 investor

READ Cased Hole provides cased hole logging, gas well maintenance, and production logging services to energy operators and service companies globally. Operating from support centres in the UK, US, Europe, and the Middle East, the company delivers independent logging diagnostics and well management solutions across major energy basins.

1 investor

Rebaba is a Swedish company that repurposes used electric vehicle batteries into energy storage systems, taking a circular approach to battery life extension.

1 investor

Rebase.energy builds an open, collaborative energy modelling platform, using data engineering and algorithms for forecasting and optimization in power systems. It serves the energy industry, targeting participants in power markets and clean energy deployment.

1 investor

Rebate Bus provides comprehensive rebate management services across the industry, offering data-driven solutions designed to deliver personalized customer experiences at scale.

1 investor

REC Power finances, owns, and operates distributed power resources nationwide, including solar, energy storage, fuel cells, microgrids, and gensets for commercial and industrial customers. The company provides on-site renewable generation and energy management systems to reduce grid reliance and operational costs.

1 investor

REC Group is a solar energy company that manufactures solar panels and solar materials, including panels based on HJT technology, for consumers and solar installers. Founded in 1996, it is headquartered in Norway with operational headquarters in Singapore and regional hubs in North America, Europe, and Asia-Pacific.

1 investor

Rechaj retrofits petrol tricycles (kekes) into electric vehicles and provides a daily battery-swap service, letting drivers replace fuel with a flat daily fee while using the batteries to power their homes at night. The company serves tricycle drivers in Nigeria, with operations built in Lagos.

1 investor

RECON provides data acquisition and monitoring products for the oil and gas and geothermal drilling industries, as well as mining and equipment rental services, enabling operational efficiency through downhole data analysis and preventative maintenance tracking.

1 investor

Recover Energy develops technology to remediate drilling waste liabilities in the oil and gas industry. The company processes and treats waste from drilling operations to reduce environmental contamination.

1 investor

IOTA Software is a software company serving the energy and industrial sector, with its products aimed at energy-sector applications and time-series/industrial data use cases.

1 investor

Recurrent Energy develops and procures solar and battery storage projects, leveraging its subsidiary status under Canadian Solar to access manufacturing capacity and integrate equipment supply chains. The company serves project developers and customers through engineering, procurement, and construction services for renewable energy installations.

1 investor

Redaptive finances, deploys, and verifies energy infrastructure upgrades for enterprises, allowing them to modernize facilities and improve efficiency without upfront capital. It serves industrial, healthcare, and real estate organizations with distributed, multi-site portfolios.

1 investor

RedEarth designs, manufactures, and supports residential and small business energy storage systems in Australia. The BushChook system combines solar battery storage, inverter, and smart energy management for homes, holiday properties, and small businesses, with capabilities for EV charging and energy trading on the grid.

1 investor

Redeia is a global operator of essential electricity and telecommunications infrastructure, managing the electricity transmission grid in Spain. The group runs investment and strategic plans for the deployment and planning of electricity networks.

1 investor