Energy Startups

Sunset Renewable Asset Management develops mobile technology and processes to recycle and reclaim end-of-life materials from solar panels, wind turbines, and battery energy storage systems. The company serves renewable energy asset owners, developers, manufacturers, and operators across Canada and internationally.

1 investor

Sunshine Holdings is a Sri Lankan conglomerate established as a medical enterprise that has evolved into a diversified corporate group operating across healthcare, dairy, tea, and energy sectors. The company serves consumers and stakeholders across Sri Lanka with a focus on bringing quality products and services to the market.

1 investor

Suntrica is an informational resource offering guides, expert insights, and product reviews about solar energy, battery storage, and renewable energy solutions. It serves homeowners and businesses looking to adopt solar power, covering topics such as installation, cost-benefit analysis, and government incentives.

1 investor

Suntropy is a SaaS tool for solar self-consumption (photovoltaic) professionals that lets them capture leads, create technical solar studies calculating consumption, panel kits, batteries and savings, and design and track customized quotes. It targets solar installers and energy companies, with software built for the Spanish market.

1 investor

Sunwealth is a clean energy investment firm that finances and manages solar and storage projects, partnering with local solar installers, community organizations, local businesses, and investors. It focuses on delivering clean power, carbon reduction, cost savings, and job creation to a range of communities.

1 investor

SunWiz provides market intelligence and data analytics for the solar and battery storage sector, converting bottom-up market data into actionable insights. It serves manufacturers, wholesalers, investors, and policymakers, with a focus originating in Australia and extending to global markets.

1 investor

Super6 develops advanced supercapacitors using scalable materials for high-power energy storage applications. The company serves grid operators, transport, data centers, and industrial sectors requiring fast energy storage for sustainability and resilience.

1 investor

Hydratight supplies heavy-duty machining, torque, and flange tools for construction, maintenance, and decommissioning projects. The company offers precision equipment for critical bolt tightening and hydraulic applications, sold for full ownership rather than rental.

1 investor

Supernova is an AI-powered mobile app focused on teaching spoken English through daily personalized lessons, translation practice from the learner's native language, and conversations with an AI tutor called Nova. It targets English learners in India, including working professionals, students, jobseekers, and homemakers.

1 investor

Surge Battery Metals is a Canadian mineral exploration company developing the Nevada North Lithium Project, a high-grade lithium claystone resource in Nevada. The company focuses on critical minerals extraction to support domestic battery supply chains.

1 investor

Surge Accelerator is an accelerator program focused on supporting entrepreneurs building technologies in the energy and clean energy sectors. The program provides capital, expert mentorship, and networking to help founders develop business solutions for renewable energy and energy efficiency challenges.

1 investor

SurplusMap provides real-time benchmarking and market intelligence data for EV charging operators across Europe. The platform tracks 500,000+ chargers to help operators decide where to build new sites, upgrade existing infrastructure, and compete on performance metrics.

1 investor

The company makes ChargeBot, a charging solution that lets all-electric landscaping crews stay charged throughout the day, making electric equipment more cost effective than gas. Originally a sustainable landscaping service, it has pivoted to sell this product to landscapers transitioning to electric.

1 investor

Susten is a venture capital firm that invests in early-stage companies developing technologies for energy distribution, storage, and management. The firm partners with utilities, industrial companies, and academic institutions to identify and back sustainable energy solutions with commercial potential.

1 investor

Spring Valley is a Dallas-based asset management firm that operates a family of special-purpose acquisition vehicles formed to merge with or acquire businesses in the power infrastructure and decarbonization sectors. Its completed and pending combinations include NuScale Power, Eagle Nuclear Energy Corp., and General Fusion, focused on nuclear, small modular reactor, and fusion energy companies.

1 investor

Sweet Atoms produces biomass-derived carbon materials and advanced coatings for energy storage, environmental filtration, and biomedical applications. The company manufactures high-performance carbons and specialty materials designed for lithium-ion batteries, sodium-ion batteries, supercapacitors, and wearable electronics.

1 investor

SwellGen appears to be developing water or power solutions for people living on the coast, based on its outreach to coastal residents about how they currently access water and electricity. The page does not describe a specific product.

1 investor

GreenSun sells solar water heating systems, home biogas systems, water treatment solutions, and aquaponics equipment in Belize, with a focus on sustainable energy use.

1 investor

Swimsol engineers and deploys floating and rooftop solar power systems for resorts and island communities, primarily in the Maldives and Indian Ocean regions. The company specializes in heavy-duty marine floating solar installations designed for extreme tropical climates.

1 investor

Swish provides turnkey EV charging stations for businesses, handling site survey, installation, grid connection, maintenance, and supervision. It offers robust OCPP-compatible charging hardware plus SwiGo, a supervision and fleet management platform that centralizes real-time monitoring, billing, and access control for sectors such as heavy vehicles, last mile, workplace, hospitality, retail, and public sector.

1 investor

Switchd is a UK subscription service that automatically switches households to the best available energy tariff, including green deals, for a monthly membership fee. It continuously monitors the market and switches customers whenever a better deal appears, and takes no commissions from energy suppliers.

1 investor

Switchgrid provides an API that aggregates electricity meter data from major French utility providers (Linky, EDF, GDF Suez, Gazpar) and exposes it via programmatic interfaces. The platform serves renewable energy companies, energy consultants, and utilities seeking to optimize installations, manage grid flexibility, and analyze energy consumption.

1 investor

Swordfish Energy operates in upstream oil and gas, focusing on asset acquisition, development, and operations. The company serves oil and gas producers and investors seeking to identify and develop reserves, leveraging geoscience and engineering expertise.

1 investor

SYCLEF is an international group specializing in the installation and maintenance of commercial and industrial refrigeration and air-conditioning systems, serving retail chains, logistics platforms, and the food-processing industry. It provides energy-efficient cooling and refrigeration solutions using natural refrigerants (NH3, CO2, propane), heat recovery, and remote monitoring across 11 countries.

1 investor