Lorentzons Styr
SI Lorentzon AB (formerly Lorentzons Styr) is a Sweden-based building automation integrator headquartered in Skövde that designs, installs, programs, and services HVAC and energy optimization control systems for property owners, municipalities, and industrial customers across the Skaraborg region.
- Company typePrivate
- Founded1998
- HeadquartersSkövde, Sweden
- Headcount11–50
- GTM typeB2B
- OfferingServices
What Lorentzons Styr does
Lorentzons Styr was founded in 1998 by Arne Lorentzon in Skövde, Sweden, and has since 2018 operated as part of the SI-koncernen (SI i Varberg). Following the May 2026 merger of sister company SI Skaraborg with SI Lorentzons Styr, the business now trades as SI Lorentzon AB. The company delivers building automation and HVAC control systems for the Skaraborg region of Västra Götaland, integrating multiple vendor platforms (Siemens, Regin, Bastec, SAIA, Johnson Controls, Ouman, Citect, I-fix) and is officially brand-agnostic (fabrikatsoberoende). Its proprietary registered-trademark platform, StyrDirigenten®, coordinates heating, cooling, and ventilation in real time and is credited with 20-30% energy savings through intelligent load management, with documented case outcomes reaching 55% district-heating reduction for projects such as Commerce Skövde.
The commercial offering spans project-based installation contracts (Entreprenad), recurring service and maintenance agreements, outcome-based energy savings performance contracts, and equipment/component supply. Approximately 50 project jobs per year range from small residential heat-controller replacements to large commercial and arena installations. Customers are concentrated in four verticals — residential property owners, commercial and office buildings, industrial facilities, and property developers/investors — including Electrolux Mariestad, Euroform Motala, Forankra Vårgårda, Riksbyggen, Commerce Skövde, Högskolan Skövde, Nya Arenan Skövde, Bilia Mariestad, and Brandstationen Skövde. Execution is end-to-end in-house: design, engineering, control cabinet manufacturing, installation, programming, commissioning, and remote monitoring from the Skövde office.
Revenue is generated through three primary mechanisms: (1) fixed-price or time-and-materials project contracts (multi-year); (2) subscription-style service contracts at fixed rates or per-hour billing; and (3) outcome-based energy savings performance contracts billed annually against achieved savings. Distribution is direct B2B field sales led by the CEO and a sales/energy specialist, supported by a 34-person technical workforce and referral-driven demand in Skaraborg. There are no resellers or distributors. The company is privately held, GDPR-compliant, and maintains Regin Premium Solution Partner status — the highest tier in the vendor's partner program.
Lorentzons Styr firmographics
Firmographics- Name
- Lorentzons Styr
- Legal name
- SI Lorentzon AB
- Website
- https://lorentzonsstyr.se
- Company type
- Private
- Founded year
- 1998
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- SI Lorentzon AB (formerly Lorentzons Styr) is a Sweden-based building automation integrator headquartered in Skövde that designs, installs, programs, and services HVAC and energy optimization control systems for property owners, municipalities, and industrial customers across the Skaraborg region.
- Ownership category
- akta.pro rank
Lorentzons Styr industry classification
Industry- Product category
- Building Automation and Energy Optimization Services
- SIC
- Services-Computer Integrated Systems Design (7373)
- akta.pro primary industry
- HVAC Controls & Optimization (Smart Thermostats, VAV, Chillers/Boilers Controls) (BPABAGAB)
- akta.pro secondary industries
- Commissioning, Retro-Commissioning & Controls Tuning (BPABAGAL), Energy Optimization & Retro-Commissioning for MEP Systems (BPABACAL), Building Thermal Controls & Building Management Systems (HVAC BMS) (IMAHAKAK), Energy & Sustainability Management (Energy Audits/Optimization/Carbon & ESG Programs) (IMAIAAAM)
Keywords
Where Lorentzons Styr is headquartered
LocationHeadquarters
- HQ city
- Skövde
- HQ country
- Sweden
- HQ region
- Europe
Offices2 records
Markets served
Lorentzons Styr business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Supply Chain, Operations, Technology or R&D, Marketing or Sales
Revenue model
- Project-based installation contracts (Entreprenad): Full-service installation projects including design, engineering, control cabinet manufacturing, installation, programming, and commissioning. Projects range from small residential heat controller replacements to large commercial installations like arenas. They execute approximately 50 project jobs per year of varying sizes.
- Service contracts and maintenance: Ongoing service agreements with function control and performance guarantees for energy savings. Includes emergency service and tailored maintenance plans. Can be priced at fixed rates or time-and-materials.
- Energy savings performance contracts: Guaranteed energy savings agreements where the company commits to achieving specific energy reduction targets. Includes remote monitoring and optimization from their office, plus on-site interventions when needed.
- Equipment and components supply: Supply of control systems, sensors, PLC controllers, and related automation equipment as part of complete solutions or standalone for customers who prefer to handle installation themselves.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| One time/ perpetual license | Multi-year contract | Fixed price project contracts |
| Usage-based | Pay-as-you-go | Time-and-materials service |
| Outcome Based/ Performance | Annual | Energy savings performance contracts |
Go-to-market motion2 records
Distribution channels2 records
Marketing channels4 records
Lorentzons Styr product offering
Product offeringCore offering
SI Lorentzon (formerly Lorentzons Styr) delivers brand-agnostic building automation and energy optimization solutions for residential, commercial, and industrial properties. The company executes the full lifecycle — from design, engineering, and control cabinet construction to installation, programming, commissioning, and ongoing service — centered on its proprietary StyrDirigenten software that coordinates heating, cooling, and ventilation systems to achieve 20-30% energy savings.
Product overview
SI Lorentzon offers a unified building automation and energy optimization portfolio centered on their proprietary StyrDirigenten software platform. StyrDirigenten serves as the core intelligence for effect/power control and integrated building system management, coordinating heating, cooling, and ventilation to achieve 20-30% energy savings. The portfolio includes supporting services such as control cabinet construction, installation, programming and commissioning, remote monitoring, and guaranteed energy savings contracts. The company operates as a brand-independent (fabrikatsoberoende) provider, working with multiple control platforms including Siemens, SAIA, Bastec, and Regin systems.
Differentiator
Problem solved
Functional benefit
Brands
- StyrDirigenten: Proprietary building automation software that optimizes heating, cooling, and ventilation systems, achieving 20-30% energy savings. Controls and integrates various building systems including district heating, electricity, and building functions.
Products and services
- StyrDirigenten
Quantifiable outcome
- Energy savings of 20-30% with StyrDirigenten system optimization
- +6 more outcomes
Companies that use Lorentzons Styr
Customer profileNamed customers11 records
Segments4 records
Ideal customer profiles3 records
Lorentzons Styr technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Integration14 records
Feature1 record
Lorentzons Styr partnerships and signals
Strategic signalPartnerships
Seven partnerships are on record, tiered parent, core, flagship and former.
- SI-koncernen (SI Group)parentSI Lorentzon AB became part of the SI (SystemInstallation) Group through the merger of SI Lorentzons Styr and SI Skaraborg in May 2026. The parent company provides organizational framework and brand identity for regional automation companies.
- SI SkaraborgcoreFormer sister company that merged with SI Lorentzons Styr in May 2026 to form SI Lorentzon AB. SI Skaraborg had been a separate entity since 2011, founded by Roland Bergh, Bengt-Inge Larsson, Bo Hallnemo, and Håkan Svensson.
- ReginflagshipRegin Premium Solution Partner (RPSP) - the highest partnership level with Regin, indicating top competency, access to emergency inventory, participation in product testing and evaluation, and annual agreement renewal.
- SiemenscoreTechnology integration partner for Siemens automation products including PRV.EKLX, PX DUC, S7 PLCs, and Desigo Insight SCADA systems.
- BastecTechnology integration partner for Bastec building automation systems and control platforms.
- SAIAcoreTechnology integration partner for SAIA PLC control systems.
- Pharmadule EmtungaformerWorked as supplier to Pharmadule Emtunga for international projects including installations in Philippines, Ethiopia, and Lithuania around year 2000.
Scale indicators5 records
Recent moves7 records
Expansion highlights5 records
Lorentzons Styr competitors and assessment
Company assessmentEmerging players
- BrainBox AI: AI-driven building HVAC optimization software provider targeting commercial real estate. Emerging technology competitor that could commoditize StyrDirigenten-type optimization with self-install SaaS models.
Direct peers
- Kiona: Nordic provider of building energy management and IoT software for commercial real estate. Most directly comparable peer: both deliver software-driven energy optimization for buildings in Northern Europe with similar customer profiles.
Broad incumbents
- Engie Solutions: Pan-European energy services and building performance contractor offering guaranteed energy savings contracts. Closest comparability on outcome-based energy performance contracting for Nordic property portfolios.
- Siemens Smart Infrastructure: Global provider of Desigo building automation and energy management solutions. Direct technology platform that SI Lorentzon integrates, but also a competitor when customers seek single-vendor turnkey solutions.
- Bravida: Leading Nordic installer of technical building systems including automation, HVAC, and electrical. Provides similar technical services to property owners across Sweden, competing for the same project pipeline.
- Schneider Electric: Global building automation incumbent with EcoStruxure platform. Competes for enterprise BMS contracts; SI Lorentzon integrates its products but competes with it for full turnkey energy optimization mandates.
- Caverion: Large Nordic building services and automation integrator offering full-lifecycle HVAC, building automation, and energy services. Comparable in service scope and Nordic geography, but at significantly larger scale.
- Honeywell Building Technologies: Global building automation and energy services provider serving commercial and industrial facilities. Comparable in delivering energy optimization outcomes, though at enterprise scale with proprietary BMS platforms.
Market position
Strengths4 records
Weaknesses4 records
Competitive moat5 records
Key risks5 records
Key highlights6 records
Customer concentration
Lorentzons Styr social profiles
Digital presenceLorentzons Styr compliance and trust
Trust signalCompliance1 record
Lorentzons Styr financial estimates
Financial estimateRevenue estimate
Valuation estimate
Lorentzons Styr leadership team
Management profileNumber of profiles
Profiles7 records
Lorentzons Styr funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Lorentzons Styr 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 Lorentzons Styr
What does Lorentzons Styr do?
SI Lorentzon (formerly Lorentzons Styr) delivers brand-agnostic building automation and energy optimization solutions for residential, commercial, and industrial properties. The company executes the full lifecycle — from design, engineering, and control cabinet construction to installation, programming, commissioning, and ongoing service — centered on its proprietary StyrDirigenten software that coordinates heating, cooling, and ventilation systems to achieve 20-30% energy savings.
Is Lorentzons Styr a public or private company?
Lorentzons Styr is a private company. It is classified as corporate owned and is currently operating.
When was Lorentzons Styr founded?
Lorentzons Styr was founded in 1998. It employs 11 to 50 people.
Where is Lorentzons Styr based?
Lorentzons Styr is headquartered in Skövde, Sweden, in the Europe region.
How does Lorentzons Styr make money?
Four revenue lines are on record. Project-based installation contracts (Entreprenad) is the primary driver. The others are service contracts and maintenance, energy savings performance contracts and equipment and components supply.
Who are Lorentzons Styr's main competitors?
BrainBox AI is listed as an emerging player. Kiona is listed as a direct peer. Broad incumbents are Engie Solutions, Siemens Smart Infrastructure, Bravida, Schneider Electric, Caverion and Honeywell Building Technologies.
Does Lorentzons Styr have an API?
No public API is recorded for Lorentzons Styr.
What industry is Lorentzons Styr in?
Lorentzons Styr's product category is Building Automation and Energy Optimization Services. Its primary akta.pro industry code is BPABAGAB, HVAC Controls & Optimization (Smart Thermostats, VAV, Chillers/Boilers Controls), with a secondary code of BPABAGAL, Commissioning, Retro-Commissioning & Controls Tuning. Its SIC code is 7373.