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101 Top Energy Startups and Companies in Ireland (2021)

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This article showcases our top picks for the best Ireland based Energy companies. These startups and companies are taking a variety of approaches to innovating the Energy industry, but are all exceptional companies well worth a follow.

We tried to pick companies across the size spectrum from cutting edge startups to established brands.

We selected these startups and companies for exceptional performance in one of these categories:

  • Innovation
    • Innovative ideas
    • Innovative route to market
    • Innovative product
  • Growth
    • Exceptional growth
    • Exceptional growth strategy
  • Management
  • Societal impact

Top Ireland Energy Startups

Data sourced from Crunchbase and SemRush.

ESB

ESB

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Founded in 1927, the Electricity Supply Board (ESB) is a statutory corporation in the Republic of Ireland.

Mainstream Renewable Power

Mainstream Renewable Power

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Mainstream Renewable Energy provides project design and management services for renewable and alternative energies.

Mainstream Renewable Power

Gazelle Wind Power

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Gazelle Wind Power is a developer of a floating wind platform.

Mainstream Renewable Power

GridBeyond

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GridBeyond provides wireless energy management and control systems for retail, commercial and industrial users.

Mainstream Renewable Power

Urban Volt

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Urban Volt is an energy-saving LED lighting firm.

Mainstream Renewable Power

Simply Blue Group

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Simply Blue Group is a marine project developer focused on floating wind initiatives.

Mainstream Renewable Power

Cool Planet Group

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Cool Planet Group is an energy services business company.

Mainstream Renewable Power

Gaelectric

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Gaelectric is a renewable energy development and operations company focusing on the wind energy and energy storage sectors.

Mainstream Renewable Power

Wattics

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Wattics’ innovative energy analytics allow energy managers to control cost, forecast trends, verify payback and meet programs and directives

Mainstream Renewable Power

BHSL

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BHSL is an innovative technology company

Mainstream Renewable Power

Cylon Controls

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Cylon is an electronic manufacturing platform that provides smart energy solutions for businesses.

Mainstream Renewable Power

Obelisk Group

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Obelisk’s collaboration with UNICEF Ireland demonstrates its commitment to social responsibility.

Mainstream Renewable Power

Fincovi

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Fincovi is a technology enabled back and middle office solution provider focused exclusively on renewable energy.

Mainstream Renewable Power

Ervia

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Ervia is a multi-utility company.

Mainstream Renewable Power

FenestraPro

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FenestraPro is software for architects to design environmentally efficient nondomestic building facades more cost effectively.

Mainstream Renewable Power

Energia

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Energia Group comprises of Energia Supply

Mainstream Renewable Power

BNRG Renewables

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BNRG Renewables is an international Renewable Energy development company. Based in Dublin.

Mainstream Renewable Power

ÉireComposites

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ÉireComposites provides design, tooling, manufacturing, and testing to the international aerospace industry.

Mainstream Renewable Power

Gavin & Doherty Geosolutions

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Gavin and Doherty Geosolutions Ltd. (GDG) is a specialist geotechnical engineering consultancy, providing innovative geotechnical solutions

Mainstream Renewable Power

NVP Energy

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NVP Energy markets energy positive wastewater treatment technology that turns wastewater into a revenue generator.

Mainstream Renewable Power

Greencoat Renewables

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Greencoat Renewables is an Irish renewable energy company.

Mainstream Renewable Power

Nines Photovoltaics

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Process tooling for solar cell and other nano tech manufacturing industries

Mainstream Renewable Power

Terra Solar

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Terra Solar develops, finances, constructs, and operates solar farms on the island of Ireland.

Mainstream Renewable Power

Kingspan

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Kingspan specializes in high-performance insulation, building fabric, and solar integrated building envelopes.

Mainstream Renewable Power

Trifol Resources

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Trifol Resources is an Clean Technology company.

Mainstream Renewable Power

EpiSensor

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EpiSensor is a provider of integrated enterprise-class wireless energy monitoring systems.

Mainstream Renewable Power

Airsynergy

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Over the last four years Airsynergy has developed and patented ground breaking renewable energy solutions.This includes a fully scalable

Mainstream Renewable Power

OceanSET

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OceanSET is providing support to ocean energy implementation plan

Mainstream Renewable Power

NovoGrid

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NovoGrid Delivers More Renewable Energy from Wind Farms to the Power Grid.

Mainstream Renewable Power

PetroNeft Resources

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PetroNeft Resources is an international oil and gas exploration and production company.

Mainstream Renewable Power

DCC

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DCC is a international sales, marketing and support services group.

Mainstream Renewable Power

DARE Technology

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DARE Technology is an Irish engineering company established to develop and commercialize patented clean energy technology.

Mainstream Renewable Power

BrightWind

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BrightWind operates as a renewable energy consultancy firm.

Mainstream Renewable Power

Clontarf Energy

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Clontarf Energy plc is an emerging oil & gas exploration and production company.

Mainstream Renewable Power

Curraghderrig Wind

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Curraghderrig Wind operates a 4.6MW wind farm in Kerry in the Republic of Ireland.

Mainstream Renewable Power

SolarMarine Energy

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SolarMarine Energy is a solar energy products company.

Mainstream Renewable Power

Oriel Sea Salt

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Oriel Sea Salt develops an energy-efficient means of extracting and harvesting sea salt and deep sea minerals directly from sea water.

Mainstream Renewable Power

Subsea Micropiles

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Subsea Micropiles is a micropiling experience offshore for better foundations and anchors

Mainstream Renewable Power

Optinergy

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Optinergy is an Irish owned company, specialising in the provision of Operations & Maintenance services to the wind industry.

Mainstream Renewable Power

Crowley Carbon

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Crowley Carbon is a provider of energy reduction solutions to the corporate, government and commercial markets.

Mainstream Renewable Power

Xerotech

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Next-generation battery systems

Mainstream Renewable Power

Schwungrad Energie

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Schwungrad specializes in the installation and operation of high energy battery/flywheel storage plant.

Mainstream Renewable Power

Western Development Commission

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Western Development Commission is a statutory body that set up to promote both social and economic development.

Mainstream Renewable Power

Pinergy

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Pinergy is an Irish owned company bringing a bright new alternative to the energy market.

Mainstream Renewable Power

Esave Corporation

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Esave is a developer of power quality and energy storage solutions that provide grid stabilization.

Mainstream Renewable Power

Airtricity

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SSE Airtricity was founded in Ireland in 1997 and is now an energy company owned by SSE plc. It is an international wind farm developer.

Mainstream Renewable Power

Endura Technologies

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Endura Technologies is a semiconductor company that provides power management solutions.

Mainstream Renewable Power

Seabased

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Seabased designs, builds, installs, and maintains utility-scale, turnkey wave energy power parks, including pre-studies, and permits.

Mainstream Renewable Power

Fjolblendir

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Fjolblendir ehf is a Research and Development Company.

Mainstream Renewable Power

OxyMem

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OxyMem solves OPEX intensive wastewater treatment with the Membrane Aerated Biofilm Reactor. Adds capacity in days, up to 75% energy savings

Mainstream Renewable Power

Kentz

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Kentz is a global engineering specialist solutions provider, with 14,500 employees operating in 30 countries worldwide.

Mainstream Renewable Power

EnergyElephant

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EnergyElephant helps people MAKE BETTER ENERGY DECISIONS, in one simple, searchable, A.I. powered location.

Mainstream Renewable Power

ElectroRoute

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ElectroRoute is a dynamic energy optimization and market services company focused on the Irish and UK markets.

Mainstream Renewable Power

ResourceKraft

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ResourceKraft develops and supplies technology-driven products for the electronics, computing, and energy industries.

Mainstream Renewable Power

Revive Active

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Revive Active is a revolutionary nutritional health food supplement which delivers increased energy, maintains the immune system.

Mainstream Renewable Power

NTR plc

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NTR plc acquires, constructs and manages sustainable infrastructure assets.

Mainstream Renewable Power

Flogas

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Flogas is a supplier of LPG, Natural Gas & Electricity to homes & businesses in Ireland & Northern Ireland.

Mainstream Renewable Power

IPL Plastics

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IPL Plastics plc is a leading sustainable packaging solutions provider.

Mainstream Renewable Power

Steorn

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Since its inception the Steorn team has been focused on delivering complex technologies in innovative ways.

Mainstream Renewable Power

Fuinneamh Sceirde Teoranta

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Fuinneamh Sceirde Teoranta is a Galway Gaeltacht based company developing an offshore wind farm at the Skerd Rocks.

Mainstream Renewable Power

Balcas

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Balcas is a timber products supplier, and has pioneered biomass renewable energy in the British Isles.

Mainstream Renewable Power

Bord na Mona

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Bord na Mona is an iconic Irish company operating six business units: Powergen, Biomass, Resource Recovery, Peat, Horticulture, and Fuels.

Mainstream Renewable Power

Kaizen Energy Limited

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Kaizen Energy offer full operational and management contracts for district and communal heating systems.

Mainstream Renewable Power

Galetech Group

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Galetech is a renewable energy company which is involved in project development, management, and related services in the electricity.

Mainstream Renewable Power

Naas Oil Company

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Naas Oil Company is a company that specializes in home heating oil as well as industrial deliveries and oil storage tanks.

Mainstream Renewable Power

Eqtec

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Eqtec proprietary advanced gasification technology used in industrial size power plants to convert waste into synthetic gas.

Mainstream Renewable Power

PrepayPower

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PrepayPower is the prepaid energy supplier of Pay As You Go electricity and gas services.

Mainstream Renewable Power

Hanley Energy

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Hanley Energy is a specialist in the design, supply, installation and support of customised energy and critical power solutions.

Mainstream Renewable Power

Positive Carbon

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Fully automated food waste monitoring for hotels, restaurants & cities.

Mainstream Renewable Power

Corrib Oil

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Corrib Oil is a retail company that offers home heating oil, agriculture fuels, commercial oil and engine oils services.

Mainstream Renewable Power

Solo Energy

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Solo Energy goal is to lower energy bills for customers and facilitate the transition to renewable energy.

Mainstream Renewable Power

IFAC Ireland

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IFAC Ireland is a Professional Services firm for the farming, food and agribusiness sector.

Mainstream Renewable Power

Battery Associates

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Battery Associates’ mission is to create a sustainable world through the power of people and battery innovation.

Mainstream Renewable Power

Providence Resources

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Providence Resources operates as an oil and gas exploration company.

Mainstream Renewable Power

Cruatech

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Cruatech builds integration modules for physical security, energy management, IT, and business intelligence.

Mainstream Renewable Power

NEST iON

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We are working to make battery production sustainable

Mainstream Renewable Power

Wind Energy Direct

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Wind Energy Direct specializes in installing wind turbines on business and industrial sites throughout Ireland and the U.K.

Mainstream Renewable Power

Activ8 Solar Energies

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Activ8 Energies was Established in 2004 and is proud to have become Ireland’s Number One Installer of Solar Energy Systems.

Mainstream Renewable Power

Solar Electric

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Solar Electric supplies and installs solar electricity and energy storage systems in homes and businesses.

Mainstream Renewable Power

Power Capital Renewable Energy

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Power Capital Renewable Energy is a solar development company.

Mainstream Renewable Power

CC Tech

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CC Tech extensive experience in delivering sustainable laboratories and research facilities.

Mainstream Renewable Power

Top Oil

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Top Oil is a supplier of home heating oil, including kerosene, as well as petrol and diesel fuel in Ireland.

Mainstream Renewable Power

Horizon Energy Group

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Horizon Energy was founded in Ireland in 2006. As one of the first energy consultants working with the industrial and commercial market.

Mainstream Renewable Power

EirGrid

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EirGrid plc is a leading Irish energy business, dedicated to the provision of transmission.

Mainstream Renewable Power

Bord Gais Energy

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Bord Gais Energy supplies gas and electricity and boiler services to customers in Ireland.

Mainstream Renewable Power

Kleandex

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Kleandex is a business web platform and management tool for discovering, selling, and buying clean and smart technologies.

Mainstream Renewable Power

Hybrid Energy Solutions

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HYbrid Energy Solutions Limited manufactures and distributes off-grid hybrid generator systems.

Mainstream Renewable Power

Corvus Software

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Corvus Software develops energy performance optimization software.

Mainstream Renewable Power

DCENR

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DCENR is a public administration focused on communications, energy, broadcasting, and natural resources policies for Ireland.

Mainstream Renewable Power

Vayu Energy

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Vayu Energy is supplies natural gas, electricity and renewables.

Mainstream Renewable Power

Greenstreets

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Greenstreets is one of Ireland’s leading environmental consultancy companies, specialising in Compliance, Waste Minimisation and Energy.

Mainstream Renewable Power

Anecto

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Anecto facilitates the power conversion industry with repair and refurbishment, training, technical support and parts management services.

Mainstream Renewable Power

Electric Ireland

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Electric Ireland is an energy provider offering electricity, gas, and home services for its users.

Mainstream Renewable Power

Frontline Energy & Environmental

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Frontline Energy & Environmental provides energy and facilities solutions and services for sustainable buildings

Mainstream Renewable Power

SELC

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SELC is engaged in developing clean energy solutions to significantly increase renewable energy project development growth worldwide.

Mainstream Renewable Power

GreenEgg Technologies

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Energy Management Hardware and Software.

Mainstream Renewable Power

Sustainable Energy Authority of Ireland

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SEAI with the aim of backing the next generation of energy technology.

Mainstream Renewable Power

Elite Energies

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Solar Energy Providers

Mainstream Renewable Power

Irish Wind Energy Association – IWEA

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The Irish Wind Energy Association (IWEA) is committed to the promotion and education of wind energy issues.

Mainstream Renewable Power

Enerpower

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Enerpower is a biomass fuel,solar panel technology and wind energy Company.

Mainstream Renewable Power

Epi-Light

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Epi-Light is a website that shows Light Fixtuers.

Written by Mark Kendall

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