The Yellow Nest Group S.l.

What The Yellow Nest Group S.l. does

The Yellow Nest Group S.l. is a privately held Spanish business and knowledge holding company, established in 2022 and headquartered in Terrassa (Barcelona), that consolidates six energy-sector subsidiaries under a unified energy transition and digital transformation strategy. The portfolio spans the full energy value chain: Smilics (smart sensors and electrical measuring equipment), KM0 Energy (zero-kilometer renewable decarbonization for municipalities), Nergix/NNERGIX (digital platform for solar PV prediction and control serving 19 countries with 11,000+ monitored sites via Sentinel Solar), Vector Energy (industrial automation and control in 50+ countries, partnering with LS Electric, Peter Electronic, New Elfin, and GIC), Zez Silko (power capacitors for energy storage and reactive compensation), and Saci (transformers, network analyzers, and metering equipment with 80+ years of history across 80+ countries).

The group's core technology layer combines Wibeee smart sensors and Wibeee Nest, an AI-powered platform for controlling energy consumption and generation across building systems, with SUNVEC photovoltaic systems, Sentinel Solar analytics, and passive building systems including facades, Canadian wells, and geothermal installations. The Vapor 4.0 corporate headquarters in Terrassa functions as an NZEB LEED GOLD-certified Living Lab that demonstrates the integrated stack with zero CO2 emissions. Combined headcount is reported at 501-1,000 employees.

Revenue is generated through three streams: hardware sales (sensors, capacitors, transformers, measurement equipment), recurring software revenue from Wibeee Nest and Sentinel Solar, and engineering and integration services across industrial automation and renewable energy. The go-to-market is sales-led and direct, executed through each subsidiary's website, the holding company's multilingual web presence (Catalan, Spanish, English), and dedicated LinkedIn channels. No pricing details are publicly disclosed. The holding structure, founding date (note: legacy subsidiaries such as Saci predate the 2022 holding formation by decades), and absence of disclosed funding, M&A, or revenue figures indicate a privately controlled industrial group with cross-sell potential rather than a venture-backed growth company.

Name

The Yellow Nest Group S.l.

Legal name

The Yellow Nest Group S.l.

Website

https://theyellownest.energy

Company type

Private

Founded year

2022

Operating status

Operating

Headcount range

501–1,000 employees

Short description

The Yellow Nest Group is a Spanish energy-sector holding that operates six subsidiaries providing smart sensors, AI-powered building energy management (Wibeee Nest), solar PV prediction software (Sentinel Solar), power capacitors, and industrial automation across more than 80 countries.

Ownership category

akta.pro rank

Product category

Energy Management Solutions

NAICS

Management of Companies and Enterprises (55111), Offices of Other Holding Companies (551112)

akta.pro primary industry

Building Automation & Controls (BAS/BMS) (HSAPAPAA)

akta.pro secondary industry

Solar Mounting, Racking, Trackers & Structural BOS Manufacturing (EUAMAHAC)

Keywords

• Energy management solutions
• Smart metering systems
• Industrial automation equipment
• Solar energy monitoring
• Power factor correction

Headquarters

HQ city

Terrassa

HQ country

Spain

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Energy Efficiency Hardware Sales: Sale of smart sensors, electrical measuring equipment, power capacitors, transformers, network analyzers, and other energy control equipment manufactured by group subsidiaries
2. Software/SaaS Solutions: Digital platforms including Wibeee Nest for energy monitoring and Sentinel Solar for solar PV prediction and control, generating recurring software revenue
3. Engineering and Integration Services: Solutions in automation, industrial control, renewable energies and energy efficiency including design, manufacturing and marketing of customized equipment

Go-to-market motion1 record

Distribution channels2 records

Marketing channels3 records

Core offering

The Yellow Nest Group is a holding company formed by six energy-sector subsidiaries that manufactures and distributes energy efficiency hardware and software, including smart sensors, electrical measuring equipment, power capacitors, transformers, network analyzers, photovoltaic systems, and AI-driven energy management platforms. Its portfolio addresses energy generation, distribution, and consumption optimization for buildings, industrial facilities, PV installations, and municipal infrastructure across more than 80 countries.

Product overview

The Yellow Nest Group S.l. is a business and knowledge holding company formed by the symbiosis of six pioneering energy-sector companies, offering a portfolio of products and solutions centered on energy efficiency, digital transformation, and the energy transition. The core offerings include the Wibeee Nest AI-powered energy monitoring and control platform, and the Sentinel Solar digital platform for solar photovoltaic prediction and control. The group subsidiary brands span the full energy value chain: Smilics (smart sensors and electrical measurement equipment), KM0 Energy (zero-kilometer renewable and decarbonization solutions), NNERGIX (digital prediction and control of solar PV generation), Vector Energy (automation, industrial control, and renewable energy solutions), ZEZ Silko (power capacitors for energy storage and reactive compensation), and Saci (electrical energy measurement and control equipment). Together the portfolio serves more than 80 countries worldwide, addressing energy generation, distribution, and consumption optimization.

Differentiator

Problem solved

Functional benefit

Brands

• Wibeee: Energy control and monitoring technology platform used in the company's headquarters and products
• Wibeee Nest
• SUNVEC
• Sentinel Solar
• Vapor 4.0

Products and services

• Wibeee Nest
• Sentinel Solar
• Smilics Wibeee Smart Sensors and Electrical Measurement Equipment
• KM0 Energy Decarbonization Solutions
• Vector Energy Industrial Automation and Energy Efficiency Solutions
• Zez Silko Power Capacitors
• Saci Electrical Energy Measurement and Control Equipment

Quantifiable outcome

• NZEB LEED GOLD certified headquarters with zero CO2 emissions demonstrating group's own energy efficiency technology

Named customers3 records

Segments4 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

Four partnerships are on record, tiered core.

• LS ElectriccoreChannel Partner/ Reseller/ DistributorVector Energy subsidiary serves as European partner and distributor for LS Electric, a leading international brand in the industrial sector
• Peter ElectroniccoreChannel Partner/ Reseller/ DistributorVector Energy subsidiary serves as European partner and distributor for Peter Electronic industrial automation brands
• New ElfincoreChannel Partner/ Reseller/ DistributorVector Energy subsidiary serves as European partner for New Elfin industrial sector brand
• GICcoreChannel Partner/ Reseller/ DistributorVector Energy subsidiary serves as European partner for GIC industrial brand

Scale indicators5 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Circutor: Spanish manufacturer of power capacitors, reactive energy compensation, network analyzers and energy efficiency equipment. Direct peer to Zez Silko and Saci within the Spanish/European market.
• Fronius International: Manufacturer of solar inverters, PV system monitoring (Solar.web) and energy storage solutions. Comparable to SUNVEC photovoltaic systems and Sentinel Solar monitoring.
• Carlo Gavazzi: Swiss manufacturer of energy meters, power analyzers, and building automation/control solutions. Strong direct overlap with Smilics' smart sensors and Saci's network analyzers.
• SolarEdge: Provider of solar PV inverters, power optimizers and module-level monitoring/analytics. Closely comparable to Nergix's Sentinel Solar platform for PV prediction, monitoring and O&M automation.

Broad incumbents

• Legrand: Global specialist in electrical and digital building infrastructure, including energy measurement, power distribution and building systems. Closely comparable to Saci's measurement instruments and Zez Silko's capacitors.
• ABB: Major industrial automation and electrification company with power capacitors, drives, and energy monitoring solutions. Directly comparable to Zez Silko (capacitors) and Vector Energy (industrial automation) within the Yellow Nest group.
• Schneider Electric: Global leader in energy management and automation, with EcoStruxure platform covering smart sensors, building automation, PV and industrial energy management. Highly comparable to Yellow Nest's Wibeee/Wibeee Nest portfolio across buildings and industry.
• Siemens Smart Infrastructure: Provides building automation, energy management systems, and industrial automation at global scale. Comparable to Yellow Nest's building automation and solar PV control offerings.
• Honeywell Building Technologies: Building automation and energy management solutions for commercial and industrial facilities. Comparable to Wibeee Nest's building energy management platform.

Regional players

• Endesa (Enel Group): Major Iberian energy utility offering distributed renewables, energy services and decarbonization solutions for municipalities. Comparable to KM0 Energy's municipal zero-km renewable offerings in Spain.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/theyellow-nest

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries6 records

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 The Yellow Nest Group S.l.