Onexus

What Onexus does

O-Nexus is a Dutch energy management software and hardware company that addresses grid congestion (netcongestie) in the Netherlands. The company develops and sells the O-Nexus Netmanager (NEXT-1), a plug-and-play gateway device installed in individual dwellings that connects to and controls a whitelist of building-bound assets including heat pumps, boilers, batteries, and EV chargers. The gateway receives daily control schedules and grid limits from a central cloud platform and automatically adjusts device operation to keep total building consumption within agreed grid limits without requiring occupant intervention. The system is designed to respond to congestion signals from energy suppliers and to execute graduated, staged interventions when power thresholds are exceeded, mirroring the grid-responsive behavior mandated under Germany's Article 14a regulation and the upcoming Dutch Energiewet 2026.

The company serves three primary verticals in the Dutch market: social housing corporations (woningcorporaties) facing the challenge of electrifying existing 1x35A-connected housing stock, construction companies and project developers whose newbuild projects are stalled due to grid capacity shortages, and operators of vacation parks and temporary housing with multiple units sharing a single high-capacity connection. Named customers and partners include housing corporations (Maasdelta, Woonmeij, Woonbedrijf, Tiwos, Hees, Lek en Waard, Alphons Coolen, Wanrooij), construction firms (Attema, Feenstra, Kemkens, Wocom, Tibo), and energy/HVAC companies (Vattenfall, Flamco).

O-Nexus operates a hybrid hardware-plus-software revenue model, generating income from NEXT-1 gateway hardware sales and a recurring cloud platform/software service component. Pricing is quote-based and tailored to project scope (newbuild, renovation, or vacation home deployments), with multi-year contract structures. The company employs 1-10 staff and distributes through direct enterprise field sales led by Business Development Manager Bart Lelij, supplemented by a channel partner network of Dutch housing corporations and construction companies. O-Nexus is privately held with no disclosed external funding and is headquartered in Amsterdam, Netherlands.

Name

Onexus

Legal name

O-Nexus

Website

https://o-nexus.com

Company type

Private

Founded year

2016

Operating status

Operating

Headcount range

1–10 employees

Short description

O-Nexus is a Dutch energy management company that provides the Netmanager (NEXT-1) gateway and cloud platform to address grid congestion for housing corporations, construction companies, and vacation park operators in the Netherlands.

Ownership category

akta.pro rank

Product category

Energy Management Systems

NAICS

Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services (5182)

SIC

Computer Communications Equipment (3576)

akta.pro primary industry

Building Connectivity Infrastructure (Wired/Wireless, Gateways, Edge) (HSAPAPAN)

akta.pro secondary industries

Small Business/SoHo Routers & Gateways (HDAFAIAH), Industrial IoT/Edge Electronics Manufacturing (Gateways, Edge Controllers) (IMAGAGAC)

Keywords

• Energy management systems
• Grid congestion solutions
• Load management hardware
• Behind-the-meter energy
• Home energy gateways

Headquarters

HQ city

Amsterdam

HQ country

Netherlands

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. O-Nexus Netmanager Hardware Sales: Sale of the O-Nexus NEXT-1 gateway hardware device, which is installed in individual dwellings and buildings to enable local energy management and load control.
2. Cloud Platform / Software Management Services: The gateway receives daily control schedules and limits from O-Nexus's central cloud platform. This implies an ongoing software/platform service component tied to the hardware deployment.

Pricing tiers

Go-to-market motion2 records

Distribution channels2 records

Marketing channels4 records

Core offering

O-Nexus designs, sells, and operates the O-Nexus Netmanager (NEXT-1), a plug-and-play hardware gateway installed in residential buildings that connects to a central cloud platform. The gateway monitors the building's grid connection value and automatically orchestrates connected devices (heat pumps, boilers, EV chargers, and batteries) to keep peak consumption and solar feed-in within agreed grid limits, while reacting to congestion signals from energy suppliers. The offering is delivered to housing corporations, construction firms, and project developers in the Netherlands through direct enterprise sales and a network of channel partners.

Product overview

O-Nexus offers a single core product — the O-Nexus Netmanager (also referred to as the NEXT-1) — which is a HEMS (Home Energy Management System) / EMS (Energy Management System) gateway. The gateway is deployed in individual homes and buildings and connects to a central cloud platform. It works with a whitelist of controlled devices (batteries, boilers, heat pumps, and EV chargers) and automatically steers these appliances to prevent peak loads and respond to grid congestion signals. The system is described as having 8 years of experience in behind-the-meter energy management.

Differentiator

Problem solved

Functional benefit

Brands

• O-Nexus Netmanager: Plug-and-play gateway device for load management that controls boilers, batteries, heat pumps, and EV chargers to manage grid connection capacity and prevent congestion

Products and services

• O-Nexus Netmanager (NEXT-1) A plug-and-play gateway device for behind-the-meter energy management that controls heat pumps, boilers, EV chargers, and batteries to manage load, reduce peak consumption, and respond to grid congestion signals, enabling buildings to operate within available grid capacity limits. Designed for housing corporations, construction firms, project developers, and vacation park operators in the Netherlands.

Quantifiable outcome

• Practical trials have proven that smart heat pump control effectively reduces netcongestion without loss of living comfort, enabling faster housing construction and renovation.
• +1 more outcomes

Named customers15 records

Segments3 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability3 records

Feature6 records

Partnerships

16 partnerships are on record, tiered core.

• AttemacoreChannel Partner/ Reseller/ DistributorAttema is a construction company that partners with O-Nexus to deploy the Netmanager in new build projects, enabling reduced grid connection requirements for new homes.
• FeenstracoreChannel Partner/ Reseller/ DistributorFeenstra is a construction and renovation company that integrates O-Nexus Netmanager solutions into its building projects to address netcongestion constraints.
• KemkenscoreChannel Partner/ Reseller/ DistributorKemkens is a construction company partner deploying O-Nexus Netmanager to enable net-aware building practices in its projects.
• WocomcoreChannel Partner/ Reseller/ DistributorWocom is a construction company partner implementing O-Nexus load management solutions in its development projects.
• TibocoreChannel Partner/ Reseller/ DistributorTibo is a construction and development partner working with O-Nexus to deploy the Netmanager gateway in new construction.
• VattenfallcoreTechnology or IntegrationVattenfall, a major European energy company, collaborates with O-Nexus on netcongestion solutions, integrating load management with energy supply operations.
• MaasdeltacoreChannel Partner/ Reseller/ DistributorMaasdelta is a housing corporation that deploys O-Nexus Netmanager across its housing portfolio to enable electrification without grid upgrades.
• WoonmeijcoreChannel Partner/ Reseller/ DistributorWoonmeij is a housing corporation partner implementing O-Nexus Netmanager for load management in its properties.
• Lek en WaardcoreChannel Partner/ Reseller/ DistributorLek en Waard is a housing corporation partner using O-Nexus solutions for netcongestion management in its housing stock.
• Alphons CoolencoreChannel Partner/ Reseller/ DistributorAlphons Coolen is a housing corporation partner deploying O-Nexus Netmanager in its renovation projects.
• TiwoscoreChannel Partner/ Reseller/ DistributorTiwos is a housing corporation partner implementing O-Nexus load management solutions across its housing portfolio.
• HeescoreChannel Partner/ Reseller/ DistributorHees is a housing corporation partner using O-Nexus Netmanager for energy management in its properties.
• WoonbedrijfcoreChannel Partner/ Reseller/ DistributorWoonbedrijf is a housing corporation partner deploying O-Nexus Netmanager solutions to enable electrification without grid upgrades.
• WanrooijcoreChannel Partner/ Reseller/ DistributorWanrooij is a housing corporation partner implementing O-Nexus load management solutions.
• ZeeuwlandcoreStrategic or Co-development PartnerZeeuwland, a housing corporation, partnered with O-Nexus and tech partners in the Boost The Grid Challenge to place 7 smart concept homes in Oost-Souburg, demonstrating accelerated housing construction without grid overload. The project included load management, dynamic tariffs, and local battery storage.
• Brains4Buildings Consortium (MOOI-subsidieproject)coreStrategic or Co-development PartnerO-Nexus participated in the Brains4Buildings project with 38 consortium partners, funded by the MOOI subsidy program. The project developed AI and machine learning models for energy consumption reduction and comfort improvement in existing utility buildings. O-Nexus presented results including a test installation at The Green Village. The project resulted in a clear shift toward Load Management as a solution for netcongestion.

Scale indicators4 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• Eaton: Eaton provides residential and commercial energy management hardware, including load-shedding and grid-edge solutions. As a diversified electrical-equipment incumbent, it overlaps with O-Nexus's gateway and load-control architecture in adjacent building-energy applications.
• ABB: ABB provides building energy management and home automation solutions (e.g., ABB-free@home, KNX-based systems) that compete in the broader HEMS and load-management market. It is an established incumbent with deeper sales channels and broader product portfolios than O-Nexus.
• Honeywell: Honeywell offers residential and building energy management products, including connected thermostats and HEMS solutions that touch load management and demand response. It competes as a broad incumbent with strong brand recognition and global distribution.
• Schneider Electric: Schneider Electric offers the EcoStruxure and Wiser HEMS platforms, which include gateway-based residential load management and grid-responsive controls. As a much larger incumbent with global reach, it represents the principal broad-portfolio competitor as netcongestion solutions scale.

Direct peers

• GreenCom Networks: GreenCom Networks is a German energy-IoT platform providing white-label HEMS and load management for utilities and housing providers across Europe. It directly competes on gateway-based load control, multi-vendor device integration, and utility-facing congestion services.
• Plugwise: Plugwise is a Dutch HEMS/EMS gateway provider offering load management and energy monitoring for residential and small commercial buildings. It is the closest direct competitor in the Dutch housing-corporation segment and competes head-to-head on gateway hardware, cloud platform, and heat-pump/EV-charger integration.
• Jedlix: Jedlix is a Dutch smart-EV-charging platform that dynamically schedules EV charging to relieve grid stress. It overlaps with O-Nexus on EV-charger control for netcongestion, particularly for housing corporations adding EV infrastructure on limited grid connections.
• EV.energy: EV.energy is a UK-based smart-EV-charging platform that uses cloud-based scheduling to manage EV load in response to grid and tariff signals. It overlaps with O-Nexus's EV-charger control module and shared-grant connection management for residential and multi-unit sites.
• Sympower: Sympower is a Dutch flexibility-services provider that aggregates distributed assets (including building loads) to deliver demand response to grid operators. It overlaps with O-Nexus at the building-level load-shifting layer and competes for the same housing-corporation and utility customers in the netcongestion value chain.

Emerging players

• Tiko Energy Solutions: Tiko is a Swiss/European provider of aggregated behind-the-meter flexibility and load management for residential heating and EV assets. It targets similar netcongestion and demand-response use cases across multiple European markets, overlapping with O-Nexus's cloud-coordinated load-control model.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/o-nexus

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 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 Onexus