Voltan Energy

What Voltan Energy does

Voltan Energy (legally Voltan Lähienergia Oy) is a Helsinki-based Finnish company founded in 2020 that provides geothermal (ground-source) heat-pump heating and cooling solutions to large residential, commercial, and industrial properties under an "energy-as-a-service" commercial model. The company designs, finances, builds, owns, operates, and maintains ground-source heat pump systems — including borehole fields (typically ~200 m deep heat exchanger loops), heat pump units, building automation integration, and a proprietary remote monitoring and control platform — on customer premises. Customers pay only for the energy they consume (priced per kWh) under multi-year contracts, with no upfront capital investment; Voltan retains equipment ownership and assumes responsibility for monitoring, maintenance, repair, and equipment replacement throughout the contract term. A buyout option is available at contract end. The remote monitoring platform performs automated data collection, predictive fault detection, and spot-price-based optimization; a partnership with Geolo (Raksystems Climate Solutions) adds zero-emission construction-phase climate control for new-build projects.

Voltan sells exclusively in Finland through a direct enterprise sales motion, targeting six primary segments: housing cooperatives (Taloyhtiöt), institutional real estate investors and property funds (Kiinteistösijoittajat), corporate / logistics / industrial property owners (Yritykset), property developers (Rakennuttajat), public sector properties (Julkiset kiinteistöt), and Varke-restricted affordable housing. Named customers include DB Schenker (Seinäjoki logistics terminal), United Bankers (UB Suomi Kiinteistöt -rahasto, Rengastie 9), Kirkkonummen Vuokra-Asunnot (14-property portfolio), Sirius Capital Partners, YIT, Innovestor, Y-Säätiö, and several As Oy housing cooperatives.

The company is privately held and majority-owned by InfraRed Capital Partners (an international infrastructure asset manager managing over USD 13 billion in assets) following a July 2024 acquisition; Kiilto Ventures was an earlier investor in 2023. Operations are led by Managing Director Miikka Lemmetty, with a sales organization headed by Sales Director Jukka Parviainen and Technical Director Niko Pihlanen. The team has collective experience on over 2,000 large geothermal system builds, and as of October 2025 Voltan had 23 active construction sites across Finland.

Name

Voltan Energy

Legal name

Voltan Lähienergia Oy

Website

https://voltanenergy.com

Company type

Private

Founded year

2020

Operating status

Operating

Headcount range

1–10 employees

Short description

Voltan Energy provides geothermal heating and cooling as a service to large Finnish properties, designing, financing, owning, and operating ground-source heat pump systems while customers pay only for energy consumed, targeting housing cooperatives, real estate investors, developers, corporate, and public-sector property owners.

Ownership category

akta.pro rank

Product category

Geothermal Energy Services

NAICS

Steam and Air-Conditioning Supply (221330)

SIC

Steam & Air-Conditioning Supply (4961)

akta.pro primary industry

Geothermal Direct Use Heat Projects (District Heating, Greenhouses, Aquaculture, Industrial Heat) (EUAMAEAG)

akta.pro secondary industries

Geothermal Power Plant Development & IPP (Permitting, Financing, Project Development) (EUAMAEAD), Geothermal Power Generation Operations & Maintenance (Plant O&M, Performance Optimization) (EUAMAEAF)

Keywords

• Geothermal heating services
• Energy as a service
• Heat pump systems
• Property heating solutions
• Renewable heating infrastructure

Headquarters

HQ city

Helsinki

HQ country

Finland

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Operations, Supply Chain, Infrastructure, Personnel, Technology or R&D, Marketing or Sales

Revenue model

1. Geothermal Energy as a Service (Lämpö palveluna): Voltan designs, finances, builds, owns, and operates geothermal heating and cooling systems on customer properties. Customers pay only for the energy consumed, making it a consumption-based recurring revenue model. Voltan retains ownership of the equipment throughout the contract period and assumes all maintenance, repair, and equipment replacement responsibilities. A buyout option is available for customers who wish to purchase the system at the end of the contract.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

Voltan Energy (legal entity Voltan Lähienergia Oy) delivers geothermal (ground-source) heating and cooling as a full-lifecycle service for large properties in Finland. The company designs, finances, installs, owns, and operates the geothermal system — including borehole fields, heat pump units, and building automation — while customers pay only for the energy consumed, with no upfront capital investment.

Product overview

Voltan Energy operates as a single unified service offering under the "Maalämpö palveluna" (Geothermal Heat as a Service) model. The company provides end-to-end geothermal heating and cooling solutions for properties, encompassing system design, financing, installation, and long-term operation and maintenance. Property owners pay only for energy consumed with no capital investment required. The service includes remote monitoring and optimization, proactive maintenance, cooling capability (maaviilennys), and an optional buyout mechanism. Voltan targets multiple property segments including housing cooperatives, real estate investors, developers, commercial companies, public properties, and Varke affordable housing projects.

Differentiator

Problem solved

Functional benefit

Products and services

• Maalämpö palveluna (Geothermal Heat as a Service) Voltaan's primary service offering where the company designs, finances, owns, operates, and maintains geothermal heating and cooling systems for properties. Customers pay only for the energy consumed with no upfront investment, while Voltan handles remote monitoring, optimization, maintenance, and equipment replacement throughout the contract period.

Quantifiable outcome

• 43.7 tonnes CO2 reduced annually per average commercial property (United Bankers, 5,200 m²)
• +5 more outcomes

Named customers10 records

Segments6 records

Ideal customer profiles6 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Three partnerships are on record, tiered minor, core and strategic.

• Rototec OyminorOthersFinnish drilling contractor that performed borehole field drilling for Voltan at the Schenker Seinäjoki terminal project in summer 2024. Rototec is a specialist geothermal drilling company.
• Tom Allen SeneracoreStrategic or Co-development PartnerFinnish market leader in geothermal and heat recovery solutions. Selected by Voltan as technical implementation partner for As Oy Espoon Tammi project (won through competitive tendering). Delivered the intelligent building automation system enabling Voltan's remote monitoring. The partnership demonstrates Voltanthe service model combined with Tom Allen Senera's technical execution expertise.
• Geolo (Raksystems Climate Solutions)strategicTechnology or IntegrationProvider of a patented construction-phase geothermal climate control solution. Partnership enables Voltan to offer zero-emission heating during building construction for new development projects. At Vantaan Ihastus, Geolo handled construction-phase climate management using geothermal energy while the borefield was being charged, ensuring the field remained in optimal condition for Voltanthe operational phase.

Scale indicators7 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• Helen Oy: Finnish energy utility providing district heating (kaukolämpö) across Helsinki. Voltan directly competes with Helen by displacing district heating with geothermal in residential and commercial properties, particularly in the Helsinki/Uusimaa region where both operate.
• Vattenfall: Swedish state-owned energy company with extensive district heating operations across the Nordics. Comparable as a large incumbent offering fossil-based and renewable heating to property owners — the same customer base Voltan targets with geothermal.
• Fortum: Finnish/Nordic energy company with district heating, power generation, and district cooling operations. Comparable as a major incumbent heating provider in the same Finnish and Nordic markets where Voltan competes.
• E.ON: European integrated energy company with district heating and energy services across Germany, Sweden, and other markets. Comparable as a broad incumbent offering heating-as-a-service to property owners at scale, though not focused on geothermal specifically.
• NIBE Energy Systems: Swedish manufacturer of heat pumps and heating solutions. Comparable as a major supplier of heat-pump technology that sits at the core of geothermal systems like Voltan's, with overlapping European customer base among installers and property owners.
• St1 Oy: Finnish energy company focused on fuels and renewable energy. Comparable as a domestic Finnish energy player transitioning toward renewables, with overlapping interest in clean heat and customer segments among Finnish property owners.

Direct peers

• Adven Oy: Nordic energy-as-a-service company providing distributed heating, cooling, and industrial energy solutions under long-term service contracts. Closest direct peer to Voltan's geothermal-as-a-service model, operating in Finland, Sweden, and the Baltics.

Regional players

• Öresundskraft: Swedish regional energy company providing district heating, electricity, and broadband in southern Sweden. Comparable as a Nordic district-heating and energy-services provider targeting similar residential and commercial customer segments, though operating in a different geography.

Emerging players

• Tom Allen Senera Oy: Finnish geothermal and heat-recovery solutions provider. A current technical implementation partner of Voltan, but also a partial competitor in geothermal heating system design and delivery for Finnish property owners.

Others

• Rototec Oy: Finnish drilling contractor specializing in geothermal boreholes. Currently a key supplier to Voltan, but operates in adjacent parts of the geothermal value chain and could potentially move upmarket into full-service delivery.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/voltan-energy

Revenue estimate

Valuation estimate

Number of profiles

Profiles12 records

Funding overview

Funding rounds3 records

Investors4 records

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Voltan Energy