What Openergy does

Openergy, doing business as OPENERGY and operated through the legal entity EGIS CONCEPT SAS (Montreuil, France), develops and operates a portfolio of cloud-based software platforms that digitize the energy performance of buildings across their design, audit, and operational phases. The product suite comprises Oplus, a cloud-based dynamic energy simulation platform that runs the EnergyPlus engine through a simplified workflow (geometry import via GbXML, thermal modeling, weather data, parallel cloud simulations, and results analysis); Odyssée, a digital energy audit platform built on Oplus that automates geometric data import from IGN, applies a Bayesian calibration method, and simulates renovation scenarios using a catalog of more than 70 Energy Performance Actions; Orion, an energy management (SME) platform that collects data from meters, GTB and IoT, applies IPMVP-compliant tracking with contractual adjustment formulas, and serves custom performance dashboards; and the Virtual Building Platform, a Big Data analytics layer that aggregates heterogeneous time-series data into a TSDB for performance analysis, IPMVP tracking, custom dashboards, and Waterfall gap decomposition combining simulation with measured data. The Bayesian calibration methodology — co-developed with Mines de Paris, EDF, and Fondation Bâtiment Énergie — is a proprietary component that automatically adjusts model parameters to reproduce real building behavior while accounting for uncertainties, supporting IPMVP-aligned performance verification.

Name

Openergy

Legal name

EGIS CONCEPT SAS

Website

https://openergy.fr

Company type

Private

Founded year

2016

Operating status

Operating

Headcount range

1–10 employees

Short description

Openergy, a French SaaS company within the Egis group, operates cloud platforms (Oplus, Odyssée, Orion, Virtual Building Platform) for simulating, auditing, and monitoring building energy performance, serving construction firms, real estate owners, and energy services providers in France.

Ownership category

akta.pro rank

Product category

Building Energy Performance Software

NAICS

Computer Systems Design and Related Services (54151), Custom Computer Programming Services (541511)

SIC

Services-Prepackaged Software (7372), Services-Computer Programming Services (7371)

akta.pro primary industry

Building Energy Management & Demand Flexibility Software (BEMS, Optimization) (EUAFAGAK)

akta.pro secondary industry

Building Management & Facility Control Systems (BMS/BAS, Power Monitoring, EPMS) (EUAEAFAJ)

Keywords

• Building energy simulation
• Energy performance auditing
• Building decarbonation software
• Energy monitoring platform
• Energy performance guarantees

Headquarters

HQ city

Paris

HQ country

France

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Software

Cost components

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

Revenue model

1. SaaS Software Subscriptions: Cloud-based software platforms (Oplus, Odyssée, Orion) available via subscription with free trial period. Revenue from platform access and usage for energy simulation, audits, and monitoring.
2. Professional Engineering Services: Expert consulting services including response to calls for tender, programming, operational monitoring, commissioning, energy audits, and decarbonation strategy development. Services provided by energy engineers throughout project lifecycle.

Pricing tiers

Go-to-market motion3 records

Distribution channels3 records

Marketing channels4 records

Core offering

Openergy develops and sells cloud-based SaaS platforms (Oplus, Odyssée, Orion, and the Virtual Building Platform) for dynamic energy simulation, digital energy auditing, and IPMVP-compliant energy performance monitoring of buildings. Alongside the software, the company delivers professional engineering services covering energy audits, decarbonation strategy, design-stage performance guarantees (MGP/CPE), and operational monitoring for building portfolios across France.

Product overview

Openergy offers an integrated suite of three interconnected software products: Oplus (cloud-based energy simulation platform using EnergyPlus), Odyssée (digital energy audit platform built on Oplus), and Orion (energy monitoring and optimization/SME platform). The Virtual Building Platform serves as the underlying Big Data infrastructure that connects simulation results with real operational data, enabling IPMVP-compliant performance tracking and gap analysis (Waterfall). Together, these tools support the full lifecycle from design and guarantee of performance through to operational monitoring and optimization, addressing the French decree tertiaire compliance requirements.

Differentiator

Problem solved

Functional benefit

Brands

• Odyssée: Digital energy audit platform combining cloud platform and expert support for building energy audits
• Oplus
• Orion

Products and services

• Oplus

Quantifiable outcome

• 50% energy savings achieved at Saint Chamond renovation (300 social housing units) with validated performance commitment in first year of operation
• +3 more outcomes

Named customers6 records

Segments5 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability2 records

Feature6 records

Partnerships

Five partnerships are on record, tiered core and minor.

• Egis GroupcoreStrategic or Co-development Partner · 1 July 2021International multidisciplinary consulting, engineering, and project management group in construction, infrastructure, water, industry, and environment sectors. Openergy joined Egis in July 2021 to accelerate growth, gaining access to complementary expertise and broader market reach.
• Station FminorStrategic or Co-development PartnerWorld's largest startup incubator located in Paris 13th arrondissement. Openergy participated in the Station F ecosystem during its early growth phase.
• Mines de PariscoreStrategic or Co-development PartnerAcademic partner in R&D collaboration for developing Bayesian calibration methods that automatically adjust model parameters to reproduce real building behavior.
• EDF (Électricité de France)coreStrategic or Co-development PartnerIndustrial partner in R&D collaboration for developing calibration methods and real building performance analysis.
• Fondation Bâtiment ÉnergiecoreStrategic or Co-development PartnerFoundation focused on building energy performance. Collaborated on R&D for calibration methods; selected Openergy's Saint Chamond project as case study for Building Energy Performance Measurement (MPEB).

Scale indicators4 records

Recent moves7 records

Expansion highlights7 records

Broad incumbents

• Schneider Electric EcoStruxure: Global incumbent offering integrated BMS/EMS (EcoStruxure Building Operation) with energy analytics, power monitoring, and demand response. Competes broadly with Openergy on building-side energy management but with much wider portfolio and global reach.
• Honeywell Forge / BMS: Incumbent building management systems and Forge energy analytics platform. Comparable on operational energy optimization, monitoring, and compliance, but bundled inside a much larger hardware-and-software portfolio.
• Siemens Desigo: Siemens building automation/management platform with energy monitoring and optimization capabilities. Comparable on building-level energy performance and operations, though typically integrated with hardware sales for large facilities.

Direct peers

• BuildingIQ: SaaS for HVAC energy optimization and continuous commissioning in mid-to-large commercial buildings. Comparable to Openergy's optimization/commissioning positioning with overlapping IPMVP-style performance verification features.
• Deepki: French SaaS for building energy and ESG performance management. Most directly comparable to Openergy: serves property owners and investors in France with continuous energy data analytics, regulatory compliance (decree tertiaire), and portfolio decarbonization—overlapping with Orion and Odyssée use cases.
• EnergyCap: Cloud energy and sustainability management platform for commercial and institutional real estate. Comparable SaaS scope—utility data aggregation, benchmarking, IPMVP-style M&V, and regulatory reporting—mirroring Openergy's monitoring and compliance workflows.
• Measurabl: SaaS for real estate ESG and energy data management across global portfolios. Comparable to Openergy's regulatory-compliance and portfolio decarbonization use cases for property investors and asset managers.
• Dexma: Energy intelligence SaaS aggregating meter and IoT data for energy monitoring and optimization across multi-site portfolios. Comparable to Openergy's Orion/Virtual Building Platform with similar customer pain points (consumption tracking, benchmarking, savings validation).

Emerging players

• BrainBox AI: AI-driven HVAC optimization and energy analytics for commercial buildings. Comparable to Openergy's optimization offering, with emphasis on autonomous control and predictive savings rather than simulation-based design.
• Metrikus: Workspace and building data platform combining occupancy, environmental, and energy data into a single layer for occupants and operators. Adjacent to Openergy's VBP data-integration approach with overlap on commercial real estate energy and compliance use cases.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xx.com/openergy

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles9 records

Funding overview

Funding rounds1 record

Investors1 record

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 Openergy