Firmus Energy
Firmus Energy is a regulated natural gas distribution network operator and supplier in Northern Ireland, running a 2,000km+ pipeline network that delivers natural gas to more than 110,000 residential and business customers across Greater Belfast, West, and Ten Towns licence areas.
- Company typePrivate
- Founded2005
- HeadquartersAntrim, United Kingdom
- Headcount51–100
- GTM typeB2B and B2C
- OfferingServices
What Firmus Energy does
Firmus Energy is a regulated natural gas distribution network operator and gas supplier licensed in Northern Ireland, serving both residential and commercial customers across two licence areas: the Greater Belfast & West Areas and the Ten Towns area (covering Antrim, Armagh, Ballymena, Coleraine, Craigavon, Derry/L'Derry, Lisburn, Lurgan, Newry, Portadown, and surrounding settlements). The company operates a 2,000km+ gas main network reaching 35 towns and villages and supplies over 110,000 homes and businesses, making it the largest gas supplier in Northern Ireland by consumption under its operating brand.
The company's core technology is physical gas distribution infrastructure, including trunk and distribution mains that connect to BGE-built North West and South North pipelines, together with smart metering systems, online account management platforms, and a PAYG top-up card system distributed through PayPoint. Firmus is investing in technical readiness for biomethane connection and hydrogen blending, positioning the existing network for renewable gas transition in line with Northern Ireland's Net Zero 2050 targets.
Commercially, Firmus operates a hybrid B2C/B2B model. Residential revenue is generated through credit-meter tariff subscriptions and PAYG usage, supported by 12-month introductory offers (32% welcome discount for credit customers, £275 bonus for PAYG). Business revenue is generated through usage-based tariffs (e.g., 9.302 p/kWh ex-VAT effective November 2025), served by a dedicated Key Account Management team and energy advisors covering seven council areas. Conveyance fees are recovered under regulator-approved network tariffs, and the company functions as both distribution network operator and supplier, capturing margin at both layers of the value chain. Firmus has been owned by UK infrastructure investor Equitix since its divestiture from iCON Infrastructure, and its financial profile was reinforced by a £285m syndicated refinancing in January 2024.
Firmus Energy firmographics
Firmographics- Name
- Firmus Energy
- Legal name
- firmus energy (Supply) Limited and firmus energy (Distribution) Limited
- Website
- https://firmusenergy.co.uk
- Company type
- Private
- Founded year
- 2005
- Operating status
- Operating
- Headcount range
- 51–100 employees
- Short description
- Firmus Energy is a regulated natural gas distribution network operator and supplier in Northern Ireland, running a 2,000km+ pipeline network that delivers natural gas to more than 110,000 residential and business customers across Greater Belfast, West, and Ten Towns licence areas.
- Ownership category
- akta.pro rank
Firmus Energy industry classification
Industry- Product category
- Natural Gas Distribution & Supply
- NAICS
- Natural Gas Distribution (221210), Natural Gas Distribution (2212), Natural Gas Distribution (22121)
- SIC
- Natural Gas Transmisison & Distribution (4923), Natural Gas Transmission (4922)
- akta.pro primary industry
- Local Distribution Company (LDC) Natural Gas Distribution Utilities (TLAGADAA)
- akta.pro secondary industries
- Gas Distribution Operations (Day-to-Day Field & System Operations) (EUAJAAAB), Natural Gas Retail Supply (Residential & SMB) (EUAGAGAD), Distributed Energy & Gas Solutions Sales (CHP, Microgrids, On-site Gas Supply) (EUAAADAJ)
Keywords
Where Firmus Energy is headquartered
LocationHeadquarters
- HQ city
- Antrim
- HQ country
- United Kingdom
- HQ region
- Europe
Offices2 records
Markets served
Firmus Energy business model
Business model- GTM type
- B2B and B2C
- Offering type
- Services
- Cost components
- Infrastructure, Supply Chain, Personnel, Operations, Technology or R&D, Marketing or Sales, Others
Revenue model
- Natural Gas Supply - Residential: Supply of natural gas to domestic customers in Greater Belfast, West, and Ten Towns licensed areas. Revenue generated from gas consumption measured by credit meters and prepayment meters. Payment methods include Direct Debit (monthly/variable), over counter at PayPoint, phone payments, and online payments.
- Natural Gas Supply - Business: Supply of natural gas to SME and large commercial customers with consumption-based tariffs. Business tariffs include online account discounts for customers using more than 8,000 kWh annually.
- Gas Distribution/Conveyance: Network operator fees for gas transportation through the distribution network. Conveyance charges approved by Utility Regulator. The company operates as both licensed supplier and licensed distribution network operator.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Subscription | Monthly | Greater Belfast Home Gas Tariff - Credit Meter Online with 32% Welcome Discount |
| Usage-based | Pay-as-you-go | Greater Belfast Home Gas (PAYG) Tariff with £275 Welcome Bonus |
| Usage-based | Monthly | Greater Belfast Business Gas Tariff Online |
| Usage-based | Pay-as-you-go | Pay As You Go Prepayment |
Go-to-market motion4 records
Distribution channels6 records
Marketing channels7 records
Firmus Energy product offering
Product offeringCore offering
Firmus Energy is a licensed natural gas distribution network operator and gas supplier in Northern Ireland. It supplies natural gas to over 110,000 domestic and business customers across 35 towns through more than 2,000 km of gas mains, with credit meter, Pay-As-You-Go and business tariff options, alongside regulated gas conveyance/distribution services.
Product overview
Firmus Energy is a natural gas supply and distribution company operating in Northern Ireland, serving both domestic and business customers across three licence areas: Greater Belfast, West, and Ten Towns. The company offers a unified natural gas supply service with multiple payment options (Credit Meter, Pay-As-You-Go, Direct Debit), complemented by network infrastructure spanning over 2,000km. Supporting offerings include the firmuscare scheme for vulnerable customers, Energy Advisors service, and various incentive programs for customers switching to natural gas. The product portfolio consists of core gas supply services (domestic and business tariffs) supported by add-on services for payment flexibility, customer support, and account management.
Differentiator
Problem solved
Functional benefit
Products and services
- Domestic Natural Gas Supply Natural gas supply service for residential customers across Firmus Energy's Northern Ireland licence areas, offered via credit meter (Direct Debit monthly/variable billing) and Pay-As-You-Go prepayment meter options, with introductory welcome discounts for new customers.
- Business Natural Gas Supply Natural gas supply service for SME and large commercial customers across Northern Ireland, with consumption-based tariffs (e.g. 9.302 p/kWh ex VAT effective 1 November 2025), an annual £30 online account discount for customers using more than 8,000 kWh, and Direct Debit billing requirements. Served by a dedicated Key Account Management team.
- Natural Gas Distribution / Conveyance Services Regulated gas distribution network operator service delivering natural gas through over 2,000 km of mains across 35 towns and villages in Northern Ireland, with conveyance charges approved by the Utility Regulator (NIAUR) and an 11% network tariff reduction planned over the GD23 period (2023-2028).
Quantifiable outcome
- CO2 emissions lower than oil customers
- +5 more outcomes
Companies that use Firmus Energy
Customer profileNamed customers3 records
Segments6 records
Ideal customer profiles2 records
Firmus Energy technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Integration2 records
Feature4 records
Firmus Energy partnerships and signals
Strategic signalPartnerships
Five partnerships are on record, tiered minor and core.
- Phoenix Energy GroupminorPhoenix Energy Group Ltd is referenced as the licensed natural gas distribution business for the Greater Belfast and Larne licence area. The companies operate in related licensed territories within Northern Ireland's gas market.
- BGE (Bord Gais Eireann)coreBGE built and operates the North West pipeline (completed 2004) and South North pipeline (completed 2006) that transport gas from Carrickfergus to towns across Northern Ireland. Firmus Energy was established as a Bord Gais subsidiary in 2005 before being sold to iCON Infrastructure in 2014.
- Gas Safe Registered InstallerscoreNetwork of certified gas engineers who install natural gas systems in customer properties. Firmus Energy maintains a Natural Gas Installer Charter to ensure quality installations. These installers are essential partners for customer acquisition and service delivery.
- PayPointcorePayPoint provides the retail network for Firmus Energy's prepayment meter customers to top up their gas cards. Customers can top up at thousands of PayPoint outlets across Northern Ireland with minimum £5 and maximum £75 per transaction.
- NI Gas Emergency Servicecore24-hour emergency response service for gas emergencies in Northern Ireland (0800 002 001). Firmus Energy coordinates with this service for safety-critical gas emergency response across the network.
Scale indicators13 records
Recent moves7 records
Expansion highlights6 records
Firmus Energy competitors and assessment
Company assessmentDirect peers
- Phoenix Energy Group: Phoenix Energy Group Ltd is the other licensed natural gas distribution and supply business in Northern Ireland, covering the Greater Belfast and Larne licence area. It operates in the same regulated market with overlapping geography, identical business model (distribution + supply), and is the most direct comparable to Firmus Energy.
- SSE Airtricity: SSE Airtricity is Firmus Energy's primary residential gas supply competitor in Northern Ireland; Firmus's 'cheapest offer' claims are explicitly benchmarked against SSE Airtricity tariffs. Comparable as a competing gas and electricity supplier serving the same Northern Irish households on similar tariff structures.
Broad incumbents
- Bord Gáis Energy: Bord Gáis Energy is the retail arm of the Irish state gas utility (Bord Gáis Éireann), which originally founded Firmus Energy in 2005. It is comparable as a larger gas utility operating across Ireland with both residential and business supply offerings and parallel renewable-gas ambitions.
- SGN (Scotia Gas Networks): SGN is one of the UK's largest gas distribution networks, operating across Scotland, the South of England, and Northern Ireland's sister licence area. Comparable as a regulated gas distribution utility with similar infrastructure, regulatory oversight, and transition to hydrogen/renewable gases.
- Cadent Gas: Cadent Gas is the UK's largest gas distribution network, serving much of the Midlands, North West, and East of England. Comparable as a regulated gas distribution utility (GDN) of similar asset-heavy, capex-intensive profile with comparable energy transition pressures and hydrogen strategies.
- British Gas (Centrica): British Gas is the UK's largest energy supplier and a former incumbent gas retailer. Comparable as a major residential and business gas supplier competing in adjacent UK markets with overlapping tariff-driven acquisition strategies, smart-meter rollouts, and vulnerable-customer support schemes.
Regional players
- Wales & West Utilities: Wales & West Utilities operates one of the UK's other regulated gas distribution networks, covering Wales and the South West of England. Highly comparable as a UK gas distribution utility with similar GDN regulatory model, hydrogen transition planning, and customer-base scale.
- Northern Gas Networks: Northern Gas Networks operates one of the UK's regulated gas distribution networks in the North East and Yorkshire. Comparable as a smaller GDN with similar licensed monopoly structure, regulatory price controls, and customer-acquisition model focused on converting off-gas-grid properties.
- Indigo Pipelines: Indigo Pipelines is a UK-based independent gas transporter and owner of local gas distribution networks in Scotland. Comparable as a smaller regulated gas distribution infrastructure asset with similar economic model and transition to renewable gas adoption.
Others
- Calisen (Smarter Metering Services): Calisen is a UK smart-meter asset owner and operator serving utility suppliers. Relevant as an infrastructure-style equity-backed utility-services peer (similar Equitix-style core infrastructure capital base) supporting regulated gas and electricity network operators including PAYG and credit meter services.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights6 records
Customer concentration
Firmus Energy social profiles
Digital presenceFirmus Energy compliance and trust
Trust signalCompliance9 records
Firmus Energy financial estimates
Financial estimateRevenue estimate
Valuation estimate
Firmus Energy leadership team
Management profileNumber of profiles
Profiles2 records
Firmus Energy subsidiaries and ownership
Company hierarchySubsidiaries1 record
Firmus Energy funding detail
Funding detailFunding overview
Funding rounds1 record
Investors4 records
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Firmus Energy M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Firmus Energy
What does Firmus Energy do?
Firmus Energy is a licensed natural gas distribution network operator and gas supplier in Northern Ireland. It supplies natural gas to over 110,000 domestic and business customers across 35 towns through more than 2,000 km of gas mains, with credit meter, Pay-As-You-Go and business tariff options, alongside regulated gas conveyance/distribution services.
Is Firmus Energy a public or private company?
Firmus Energy is a private company. It is classified as private equity controlled and is currently operating.
When was Firmus Energy founded?
Firmus Energy was founded in 2005. It employs 51 to 100 people.
Where is Firmus Energy based?
Firmus Energy is headquartered in Antrim, United Kingdom, in the Europe region.
How does Firmus Energy make money?
Three revenue lines are on record. Natural Gas Supply - Residential is the primary driver. The others are natural Gas Supply - Business and gas Distribution/Conveyance.
Who are Firmus Energy's main competitors?
Direct peers on record are Phoenix Energy Group and SSE Airtricity. Broad incumbents are Bord Gáis Energy, SGN (Scotia Gas Networks), Cadent Gas and British Gas (Centrica). Regional players are Wales & West Utilities, Northern Gas Networks and Indigo Pipelines. Calisen (Smarter Metering Services) is listed as an others.
Does Firmus Energy have an API?
No public API is recorded for Firmus Energy.
What industry is Firmus Energy in?
Firmus Energy's product category is Natural Gas Distribution & Supply. Its primary akta.pro industry code is TLAGADAA, Local Distribution Company (LDC) Natural Gas Distribution Utilities, with a secondary code of EUAJAAAB, Gas Distribution Operations (Day-to-Day Field & System Operations). Its NAICS code is 221210 and its SIC code is 4923.