One Solar

What One Solar does

One Solar, founded in Barcelona, Spain in 2002 and rebranded to One Hub Energy in 2024-2025, is a privately held B2B renewable energy optimization firm. The company targets IPPs, utilities, investors, developers, EPC contractors, and commercial and industrial energy consumers, providing advisory and software across the full project lifecycle — from greenfield origination through development, construction, and operation of renewable, hybrid, and battery energy storage system (BESS) assets.

The core technology stack comprises three proprietary digital products: One Hub Analytics (the platform for technoeconomic, regulatory, and project feasibility analysis with BESS and hybrid optimization), OneBESS (a specialized BESS project optimization module), and OneFlex (an automation tool for electricity market negotiation and trading). The system ingests structured energy market data, time-series from installations, and operational metrics, applying proprietary algorithms that claim to analyze, predict, and act to maximize revenue in real time. The company also offers customized solutions addressing technical restrictions that limit renewable project performance.

Commercially, One Hub Energy operates an enterprise field sales model with quote-based, consultative engagements. Revenue is generated from two streams: subscription/recurring software licenses for the proprietary tools, and professional services for strategic advisory, feasibility studies, and consulting. Customer logos span European and international energy companies (QEnergy, BayWa r.e., Sonnedix, TrinaSolar, Ionity, Volkswagen Group, SEAT), with three public case studies (QEnergy BESS project evaluation, BayWa r.e. hybridization feasibility, Ionity BESS-to-charging consulting). The company holds the Spanish PYME Innovadora designation and has received public innovation funding from CDTI, ENISA, and EUIPO. No parent company, institutional investors, headcount, or revenue figures are publicly disclosed.

Name

One Solar

Legal name

One Hub Energy

Website

https://onesolar.energy

Company type

Private

Founded year

2002

Operating status

Operating

Headcount range

11–50 employees

Short description

One Hub Energy (formerly One Solar) is a Barcelona-based B2B firm providing proprietary software — One Hub Analytics, OneBESS, OneFlex — and expert advisory that optimize revenue and feasibility for renewable, hybrid, and BESS projects across the full lifecycle for IPPs, utilities, developers, OEMs, and C&I customers.

Ownership category

akta.pro rank

Product category

Renewable Energy Optimization Software

NAICS

Software Publishers (5132), Computer Systems Design and Related Services (54151)

SIC

Services-Computer Integrated Systems Design (7373), Services-Computer Programming Services (7371), Industrial Instruments For Measurement, Display, And Control (3823)

akta.pro primary industry

Energy Trading & Portfolio Optimization for Flexible Assets (Retailer/GenCo/IPP) (EUAFAKAL)

akta.pro secondary industries

Battery Analytics, Digital Twins, SoH/SoC Estimation & Degradation-Aware Dispatch (EUAFAKAK), Trading Platforms, ETRM/CTRM & Market Connectivity (APIs, Messaging, Integrations) (EUAMAMAN)

Keywords

• Renewable energy software
• Battery storage optimization
• Energy asset analytics
• Electricity market automation
• Renewable energy consulting

Headquarters

HQ city

Barcelona

HQ country

Spain

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Software

Cost components

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

Revenue model

1. Digital Tools & Software: Revenue generated from proprietary software platforms (One Hub Analytics, OneBess, OneFlex) that provide optimization services for renewable energy projects, BESS systems, and electricity market operations
2. Strategic Advisory & Consulting Services: Expert consulting services accompanying clients throughout the project lifecycle from greenfield development to hybrid system operation, providing technical and strategic expertise

Go-to-market motion1 record

Distribution channels1 record

Marketing channels5 records

Core offering

One Hub Energy (formerly One Solar) sells proprietary digital tools and expert advisory services that optimize the value of renewable energy, BESS, and hybrid energy projects. Its product suite — One Hub Analytics, OneBESS, and OneFlex — applies real-time optimization, predictive analytics, and automated market trading to maximize revenue for IPPs, utilities, investors, developers, and commercial/industrial energy consumers across the full project lifecycle.

Product overview

One Hub Energy (formerly One Solar) offers a unified platform of digital tools for the renewable energy sector, consisting of One Hub Analytics (core analytical platform), One BESS (BESS optimization module), and One Flex (electricity market negotiation automation). The platform serves IPPs, utilities, investors, developers, EPC contractors, and commercial/industrial energy consumers across all project phases from greenfield origination through operation. The company integrates proprietary algorithms, market intelligence, and expert advisory to maximize the value of renewable energy and storage assets.

Differentiator

Problem solved

Functional benefit

Brands

• One Hub Analytics: Advanced digital tools for optimizing BESS and hybrid renewable energy projects profitability.
• OneBESS
• OneFlex

Products and services

• One Hub Analytics Digital platform that analyzes, predicts, and acts to optimize the profitability of BESS and hybrid renewable energy projects, providing project feasibility, techno-economic analysis, and regulatory assessment for IPPs, utilities, investors, and developers.
• OneBESS Specialized tool for Battery Energy Storage System (BESS) project optimization, helping project developers and investors maximize the value of BESS assets through targeted analytics.
• OneFlex Automation and optimization solution for electricity market trading and negotiation, enabling energy producers to maximize revenue from market participation.
• Custom Solutions for Technical Restrictions Tailored consulting and technical solutions that address technical constraints in renewable energy projects, unlocking revenue potential lost to issues such as energy curtailment and grid restrictions.
• Strategic Advisory & Consulting Services Expert consulting services that accompany clients throughout the entire renewable energy project lifecycle — from greenfield origination, through development, construction, and operation of BESS and hybrid systems — providing technical and strategic expertise including BESS project evaluation, hybridization feasibility studies, and BESS-to-charging integration advisory.

Quantifiable outcome

• Real-time revenue optimization for energy assets
• +2 more outcomes

Named customers15 records

Segments6 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability3 records

Feature4 records

Scale indicators3 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• Fluence: Fluence is a global BESS and energy-storage technology and software provider offering the Mosaic OS platform for asset optimization. Competes with OneBESS and One Hub Analytics, but at a much larger scale with vertically integrated hardware+software.
• AutoGrid: AutoGrid (now part of Schneider Electric) offers a distributed energy resources management system (DERMS) and AI-based energy optimization platform. Overlaps with One Hub Analytics and OneFlex in flexible-asset optimization and trading.
• sonnen (by Enphase): sonnen develops residential and commercial battery storage systems and a virtual power plant platform. Adjacent competitor in BESS optimization and energy flexibility, with broader hardware footprint and global scale.

Direct peers

• EnergyHub: EnergyHub provides a DERMS platform for utilities and energy retailers, enabling management of distributed energy resources including storage. Comparable in target customer (utilities, asset managers) and optimization scope.
• Stem Inc: Stem provides AI-driven energy storage optimization and virtual power plant software for commercial, industrial, and utility customers. Directly competes with OneBESS on BESS optimization and trading automation.
• Pexapark: Pexapark provides renewable energy market analytics, PPA valuation, and price/reference curves for wind and solar assets in Europe. Direct overlap with One Hub Energy's OneFlex electricity-market optimization and One Hub Analytics techno-economic feasibility offerings.
• Clean Horizon: Clean Horizon is a French consultancy and software provider focused on battery storage project advisory and energy market analysis. Closely comparable in BESS advisory plus market/optimization services for European IPPs and developers.
• Inenco Group: Inenco delivers energy management, procurement, and optimization software for large C&I energy buyers and IPPs across Europe. Comparable on software-enabled energy optimization and advisory for asset managers and C&I consumers.

Others

• BayWa r.e. (Energy Solutions): BayWa r.e. is both a customer (hybridization feasibility) and a broader renewable energy developer with internal optimization capabilities. Relevant as ecosystem participant — its operations intersect with One Hub Energy's customer base and indirectly shape demand for optimization services.

Emerging players

• Lumen Energy: Lumen Energy is an emerging BESS optimization and flexibility platform for European assets, with a focused product on dispatch optimization and trading. Overlaps with OneBESS and OneFlex for early-stage BESS portfolios.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/onesolar

Revenue estimate

Valuation estimate

Number of profiles

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 One Solar