Regio Energie Solothurn

What Regio Energie Solothurn does

Regio Energie Solothurn is a municipal energy utility owned by the City of Solothurn, Switzerland, founded in 1860 and serving the Solothurn region with electricity, natural gas (including renewable biogas variants), district heating, drinking water, public e-mobility charging, and building technology services. The company operates a portfolio of physical infrastructure — electricity and gas grids, district heating networks, water systems, and a public EV charging network across 15+ municipalities — and runs the Hybridwerk Aarmatt, a combined heat and power facility that integrates the STORE&GO Power-to-Gas installation, the first in Switzerland to produce renewable methane via biological methanation (operational since 2019, Watt d'Or 2020 winner). The company has expanded its renewable gas portfolio with a 2025 commissioning of a biogas upgrading facility at Kompogas Utzenstorf connected via a 2.3 km pipeline to Gerlafingen, and received the first Swiss approval for renewable hydrogen injection into a gas network.

The business model is a regulated multi-utility: revenue is generated through subscription-based electricity, gas, water, and heat distribution tariffs, with additional revenue from usage-based e-mobility charging, professional services (building technology through subsidiary ASR Haustechnik AG), and contracting. Pricing is publicly disclosed and seasonally structured (electricity Saisontarife from 2026, gas products with increasing biogas content). The company serves three primary customer segments — residential (Privatkunden), business/industrial (Geschäftskunden), and municipalities (Gemeinden) — and is integrated into broader Swiss energy ecosystems through Swisspower (22 city utilities) and Gasverbund Mittelland AG (15 regional gas suppliers). Reported annual profit was 4.431 million CHF in 2025, recovering from 3.318 million in 2024.

Name

Regio Energie Solothurn

Legal name

Regio Energie Solothurn

Website

https://regioenergie.ch

Company type

Private

Founded year

1860

Operating status

Operating

Headcount range

51–100 employees

Short description

Regio Energie Solothurn is a municipal multi-utility owned by the City of Solothurn, Switzerland, supplying electricity, natural gas, biogas, district heating, drinking water, e-mobility, and building technology services to residential, business, and municipal customers across the Solothurn region.

Ownership category

akta.pro rank

Product category

Regional Energy Utility

NAICS

Electric Power Generation, Transmission and Distribution (2211), Steam and Air-Conditioning Supply (221330), Natural Gas Distribution (2212), Water, Sewage and Other Systems (2213)

SIC

Electric, Gas & Sanitary Services (4900), Electric Services (4911), Natural Gas Transmisison & Distribution (4923), Cogeneration Services & Small Power Producers (4991)

akta.pro primary industry

District Energy & Community CHP (District Heating/Cooling Networks) (EUACAKAH)

akta.pro secondary industries

Onsite Low-Carbon Heat & CHP (Electrified CHP, Fuel Cells, Renewable CHP) (EUABAJAI), Captive & Embedded Gas-Fired Power Generation (Industrial/Commercial CHP) (EUALALAB), Waste-to-Energy CHP (Municipal/Industrial Waste Incineration) (EUACAKAC)

Keywords

• Electric utility services
• Natural gas distribution
• District heating supply
• Renewable biogas production
• Drinking water supply

Headquarters

HQ city

Solothurn

HQ country

Switzerland

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

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

Revenue model

1. Electricity Distribution and Sales: Supply of electricity to residential, commercial, and industrial customers in the Solothurn region. Revenue comes from electricity sales, network charges, and energy procurement costs passed through to customers.
2. Gas Distribution and Sales: Natural gas and biogas supply to customers with various product tiers including standard gas and renewable biogas options (so bunt, so regional). Revenue includes commodity sales, network fees, and increasingly biogas premiums.
3. District Heating (Fernwärme): Supply of heating energy through district heating networks including new areas like Weitblick and Lohn-Ammannsegg. Revenue from heat energy sales to connected buildings.
4. Building Technology Services: Installation and maintenance services for electrical systems, plumbing, heating, and ventilation through subsidiary ASR Haustechnik AG. Includes 3D bathroom renovations, comfort ventilation systems, and descaling maintenance.
5. Drinking Water Supply: Operation and maintenance of drinking water infrastructure and supply systems, with involvement of WARESO water association.
6. E-Mobility Infrastructure: Operation of public EV charging stations with revenue from electricity sales to EV drivers.
7. Public Lighting Services: Installation and maintenance of public street lighting for municipalities, contributing to energy efficiency regulations compliance.

Pricing tiers

Go-to-market motion1 record

Distribution channels4 records

Marketing channels7 records

Core offering

Regio Energie Solothurn is a regional municipal energy utility that distributes electricity, natural gas, biogas, district heating, and drinking water to residential, commercial, and municipal customers in the Solothurn region. It also operates public EV charging infrastructure and delivers building technology installation and maintenance services through its subsidiary ASR Haustechnik AG. The company runs the Hybridwerk Aarmatt facility, which combines combined heat and power generation with Power-to-Gas technology (STORE&GO) to produce renewable methane.

Product overview

Regio Energie Solothurn is a Swiss regional energy utility offering an integrated portfolio of energy products and services including electricity supply, natural gas with renewable biogas options, district heating, drinking water, and building technology installation services. The company operates the Hybridwerk Aarmatt (combined heat and power plant) and participates in the European STORE&GO Power-to-Gas research project for renewable methane production. Customer-facing digital tools include Smart Meter infrastructure, an online customer portal, price calculators, and public e-mobility charging stations. Building technology services cover electrical, sanitary, heating and ventilation systems for both residential and commercial customers.

Differentiator

Problem solved

Functional benefit

Brands

• so bunt: Standard gas product with increasing biogas content (30% as of July 2026, up from 10% in 2021)
• so regional 100
• so regional 30
• so erneuerbar
• Hybridwerk
• STORE&GO

Products and services

• Electricity Supply (Strom)
• Natural Gas and Biogas Supply (Erdgas und Erneuerbare Gase)
• District Heating (Fernwärme)
• Drinking Water Supply (Trinkwasser)
• E-Mobility Charging Network
• Building Technology Services (Gebäudetechnik)
• Energy Contracting
• Energy Consulting (Energieberatung)
• Hybridwerk Aarmatt
• Public Lighting Services

Quantifiable outcome

• 9 consecutive years of gas price reductions through 2026
• +3 more outcomes

Named customers6 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Seven partnerships are on record, tiered core and minor.

• ASR Haustechnik AGcoreOthers · 25 November 2019Regio Energie Solothurn holds a stake in ASR Haustechnik AG, a regional installation company specializing in sanitary, heating, and ventilation systems. ASR provides specialized services including 3D bathroom renovations, comfort ventilation installation, and descaling maintenance, expanding RES's competencies in building technology services.
• Gasverbund Mittelland AG (GVM)coreStrategic or Co-development PartnerGVM is a consortium of 15 regional gas suppliers in the Mittelland and Northwestern Switzerland region. They procure and transport natural gas at optimal conditions for member utilities and manage the regional transmission pipeline network ensuring supply quality and security.
• Kompogas Utzenstorf AGcoreStrategic or Co-development PartnerPartnership for regional biogas production. Kompogas converts green waste through anaerobic digestion into CO2-neutral biogas and compost. Regio Energie Solothurn invested in a biogas upgrading facility and 2.3km pipeline connecting Utzenstorf-Bätterkinden island network to the Solothurn area.
• Optima-Solar Genossenschaft SolothurnminorStrategic or Co-development PartnerCommunity solar cooperative that installs and operates photovoltaic systems on rented rooftops for grid feed-in. Member of the Optima-Solar Switzerland cooperative network, enabling local solar energy production and community investment in renewable energy.
• Sysdex AGcoreTechnology or IntegrationEnergy data management services company providing metering, billing, remote meter reading, and IT systems operation for electricity and gas utilities and other infrastructure service providers.
• Swisspower AGcoreStrategic or Co-development PartnerStrategic alliance of 22 Swiss city utilities and regional supply companies. Partners commit to shaping a future-proof energy system with increased energy efficiency and more renewable energies.
• WARESO AG (Wasserverbund Region Solothurn)coreStrategic or Co-development PartnerWater supply association ensuring adequate provision of high-quality drinking, process, and fire-fighting water in the defined area. Creates synergies in operations, better utilization of existing capacities, shared reserves, and cost optimization.

Scale indicators8 records

Recent moves6 records

Expansion highlights6 records

Others

• Kompogas Utzenstorf AG: Biogas production partner of Regio Energie Solothurn operating anaerobic digestion facilities converting green waste to biogas and compost. Strategic supply partner rather than competitor; represents a key node in the regional renewable gas value chain.
• Swisspower AG: Strategic alliance of 22 Swiss city utilities including Regio Energie Solothurn itself. Functions as a partnership/ecosystem player rather than a direct competitor, but its member utilities (including EWB, IWB, EKZ) constitute the most relevant peer set for benchmarking.

Direct peers

• St. Gallen Stadtwerke: Municipal utility of St. Gallen providing electricity, gas, district heating, water, and e-mobility. Closely analogous regional Swiss multi-utility with similar service portfolio and customer segments to Regio Energie Solothurn.
• Energie Wasser Bern (ewb): Municipal utility of the City of Bern providing electricity, gas, district heating, water, and e-mobility services. Highly comparable multi-utility structure and Swiss municipal ownership model, but at significantly larger scale.
• Industrielle Werke Basel (IWB): Municipal multi-utility of Basel offering electricity, gas, district heating, water, and telecom services. Operates under the same regulated Swiss municipal utility framework with comparable energy transition strategies including renewable gas and Power-to-Gas investments.
• Aare Energie AG (a.en): Regional energy supplier based in the greater Solothurn/Bern region, providing electricity, gas, heating, and e-mobility solutions. Direct regional competitor with overlapping service territory and similar product portfolio.

Regional players

• Groupe E: Multi-energy utility serving western Switzerland (cantons of Fribourg, Neuchâtel, Vaud) with electricity, gas, heat, and e-mobility services. Comparable multi-utility portfolio in a different Swiss region.
• Romande Energie: Major Western Swiss electricity producer and distributor based in Vaud. Comparable Swiss utility with similar regulated electricity distribution model but serving a different linguistic/geographic region (Romandy).

Broad incumbents

• BKW Energie AG: Largest Swiss energy company headquartered in Bern, providing integrated energy services, generation, networks, and e-mobility across Switzerland. Comparable multi-utility model but with national/international scale and publicly traded status.
• Elektrizitätswerke des Kantons Zürich (EKZ): Canton-wide electricity and energy services provider in Zurich, significantly larger than Regio Energie Solothurn but operating with similar municipal utility governance and renewable energy transition strategies.

Market position

Strengths4 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights6 records

Customer concentration

• YouTubeyoutube.com/channel/UCm2oFoP3QZufhI7P9yIqZEA
• Facebookfacebook.com/RegioEnergieSolothurn
• LinkedInlinkedin.com/company/regio-energie-solothurn
• Instagraminstagram.com/regioenergie/?igshid=MmJiY2I4NDBkZg%3D%3D
• Xx.com/regioenergieso

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Subsidiaries1 record

Funding overview

Funding rounds

Investors

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 Regio Energie Solothurn