Soto Solar
Soto Solar (operating as Ekhi) is a Madrid-based B2B renewable energy solutions provider that develops, finances, and manages large-scale PV plants, offering modular solar PPA, battery storage, and grid supply services to large European enterprises and industrial clients via 30+ year contracts.
- Company typePrivate
- Founded2018
- HeadquartersMadrid, Spain
- Headcount11–50
- GTM typeB2B
- OfferingServices
What Soto Solar does
Soto Solar (operating commercially as Ekhi) is a Madrid, Spain–based for-profit energy solutions provider that develops, finances, and manages large-scale photovoltaic (PV) plants. The company targets large enterprises and industrial clients across Europe with a modular product architecture branded as "Energy Blocks," comprising three integrated modules: Ekhi Genera (utility-scale and distributed solar generation), Ekhi Almacena (battery storage), and Ekhi Suministra (grid supply and price risk coverage). These blocks can be deployed incrementally or simultaneously, enabling flexible customer adoption paths from on-site solar generation through to full off-site renewable coverage and battery storage.
The product portfolio spans nine core offerings: PPA Onsite, PPA Offsite, PPA Virtual, EPC (engineering, procurement, and construction), Almacenamiento (battery storage), Cargadores VE (EV chargers), Eficiencia energética (energy efficiency), Power Fusion (integrated multi-technology solution), and Suministro (grid electricity supply). The company maintains proprietary tools including what it describes as the first PPA simulator in Spain, and holds ISO 9001 certification and TÜV Rheinland Test Mark quality certification. Partnerships include Power2X (green hydrogen), UNEF (Spanish Photovoltaic Union) membership, and TÜV Rheinland as certification partner.
The business model combines one-time EPC project revenue with long-duration recurring PPA revenue streams structured for 30+ year contract terms. The company assumes both financial and technical risk for installations, reducing customer capital outlay and creating high switching costs. Go-to-market is sales-led B2B with a digital self-service simulator for lead qualification, targeting industrial customers seeking energy cost stability, CO2 reduction, and compliance with environmental regulations. The company raised approximately $110.4 million in a 2019 funding round and announced a corporate Fusion Project in 2024.
Soto Solar firmographics
Firmographics- Name
- Soto Solar
- Legal name
- Ekhi
- Website
- https://sotosolar.es
- Company type
- Private
- Founded year
- 2018
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Soto Solar (operating as Ekhi) is a Madrid-based B2B renewable energy solutions provider that develops, finances, and manages large-scale PV plants, offering modular solar PPA, battery storage, and grid supply services to large European enterprises and industrial clients via 30+ year contracts.
- Ownership category
- akta.pro rank
Soto Solar industry classification
Industry- Product category
- Renewable Energy Solutions
- NAICS
- Solar Electric Power Generation (221114)
- SIC
- Cogeneration Services & Small Power Producers (4991)
- akta.pro primary industry
- Solar Financing, Leasing & Ownership Platforms (Tax Equity, PPA, Securitization) (EUAMABAJ)
- akta.pro secondary industry
- Renewable Energy Asset Management (Solar/Wind/Hydro/Geothermal) (EUAEAMAB)
Keywords
Where Soto Solar is headquartered
LocationHeadquarters
- HQ city
- Madrid
- HQ country
- Spain
- HQ region
- Europe
Markets served
Soto Solar business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Infrastructure, Supply Chain, Personnel, Operations, Technology or R&D
Revenue model
- PPA Onsite: Power Purchase Agreement model where solar panels are installed on the customer's premises (onsite). Customer purchases energy generated on-site, typically over 30-year contract terms, providing price stability and renewable energy sourcing.
- EPC Services: Engineering, Procurement, and Construction services for photovoltaic installations. One-time project revenue for system design and installation.
- Battery Storage: Battery storage solutions enabling continued cost savings and emissions reduction during non-solar hours. Can be combined with onsite generation.
- PPA Offsite/Virtual: Offsite renewable energy procurement combining technologies like wind and biomass for 100% renewable supply without requiring onsite installation.
- EV Chargers: Electric vehicle charging solutions for enterprise customers.
- Energy Supply: Grid electricity supply services through Ekhi Suministra block, providing network supply and coverage solutions.
- Energy Efficiency Services: Energy efficiency solutions to improve enterprise operational efficiency.
Go-to-market motion1 record
Distribution channels1 record
Marketing channels5 records
Soto Solar product offering
Product offeringCore offering
Soto Solar develops, finances, and manages large-scale photovoltaic (PV) plants, offering a modular renewable energy platform structured around three Energy Blocks: generation, storage, and grid supply. The company delivers on-site and off-site solar Power Purchase Agreements (PPAs), engineering/procurement/construction (EPC) services, battery storage, EV chargers, and energy efficiency solutions to industrial and enterprise customers, primarily in Spain and Europe.
Product overview
Ekhi is an energy solutions provider operating across Europe offering a modular platform built around three Energy Blocks — Ekhi Genera (generation), Ekhi Almacena (storage), and Ekhi Suministra (grid supply) — which can be integrated sequentially or simultaneously for a flexible, optimized energy strategy. The portfolio comprises nine core products: PPA Onsite (on-site solar PPA with panels installed at the business), EPC (full engineering, procurement, and construction with risk assumption), Almacenamiento (battery storage), PPA Offsite (off-site renewable supply via wind or biomass), PPA Virtual (virtual PPA without on-site installation), Cargadores VE (EV chargers), Eficiencia energética (energy efficiency), Power Fusion (integrated multi-technology solution), and Suministro (grid electricity supply). The Energy Blocks architecture allows businesses to select and combine modules based on their needs, with solutions scalable from on-site solar generation through to full off-site renewable coverage and battery storage.
Differentiator
Problem solved
Functional benefit
Brands
- Ekhi Genera: Utility scale and distributed generation solutions for renewable energy production.
- Ekhi Almacena
- Ekhi Suministra
Products and services
- PPA Onsite On-site solar PPA where solar panels are installed at a business's premises, enabling it to take control of its energy consumption with savings over 30 years or more.
- PPA Offsite Off-site renewable PPA combining technologies such as wind or biomass to provide and guarantee 100% renewable and competitive energy supply.
- PPA Virtual Virtual PPA solution enabling access to renewable energy without requiring on-site installation or available roofspace.
- EPC Engineering, Procurement, and Construction service covering full project delivery including financial and technical risk assumption before, during, and after installation.
- Almacenamiento (Battery Storage) Battery storage solution allowing businesses to continue saving on costs and CO2 emissions during non-solar hours.
- Cargadores VE (EV Chargers) Electric vehicle (EV) charging solutions integrated into the broader energy management portfolio.
- Eficiencia Energética (Energy Efficiency) Energy efficiency solutions designed to help businesses improve operational efficiency with significant savings.
- Power Fusion Integrated energy solution combining multiple technologies and energy blocks into a unified offering.
- Suministro (Grid Supply) Grid energy supply solution providing network electricity supply and price coverage, complementing on-site generation and storage modules.
Quantifiable outcome
- Significant cost savings over 30+ years with protection from market fluctuations
Companies that use Soto Solar
Customer profileSegments1 record
Ideal customer profiles1 record
Soto Solar technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature2 records
Soto Solar partnerships and signals
Strategic signalPartnerships
Two partnerships are on record, tiered core.
- Power2XcorePower2X is listed as a partner/resource on Ekhi's website. Power2X is a developer of large-scale green hydrogen and clean energy projects, suggesting a strategic partnership for advancing renewable energy development.
- UNEF (Unión Española Fotovoltaica)coreEkhi is a member of UNEF, the Spanish Photovoltaic Union. This industry association membership provides industry representation, standards alignment, and market intelligence access.
Scale indicators2 records
Recent moves7 records
Expansion highlights5 records
Soto Solar competitors and assessment
Company assessmentBroad incumbents
- Engie: Global energy major with Iberian renewable generation, corporate PPAs, and integrated energy services for industrial customers. Comparable as a large-scale European counterparty in PPA and energy supply deals.
- Acciona Energía: Large Spanish incumbent renewable IPP with utility-scale solar, wind, and storage assets globally and significant PPA origination in Iberia. Comparable as a benchmark for Spanish utility-scale solar economics and PPA competition.
- Enel Green Power: Global IPP with substantial Spanish/European utility-scale solar and storage portfolio and corporate PPA offerings. Comparable on scale, technology mix (PV + storage), and European customer base.
- EDP Renováveis: Iberian-headquartered utility-scale renewable developer (wind and solar) with significant PPA activity across Europe. Comparable in scale, technology, and European PPA commercial structure.
- Iberdrola: One of the world's largest renewable utilities with a major Spanish solar and PPA franchise serving industrial customers. Sets the competitive ceiling for pricing and project scale in the Spanish PPA market.
Regional players
- Holaluz: Spanish solar company offering green energy tariffs and PPA-style products primarily to residential and SME segments. Comparable in Spanish market positioning and PPA-style offerings, though skews smaller-customer than Soto Solar's industrial focus.
Direct peers
- Lightsource bp: Global utility-scale solar developer and owner with active European PPA business serving industrial offtakers. Directly comparable developer-to-customer PPA model and asset ownership structure.
- Solarcentury (Statkraft): European utility-scale solar developer (now part of Statkraft) with strong UK/Spain/Europe pipeline and PPA capabilities. Closely comparable developer + EPC + asset owner model for European corporates.
- Grenergy: Spanish-listed renewable energy developer focused on utility-scale solar PV and battery storage across Europe and the Americas. Directly comparable business model (developer + IPP + storage) and geographic overlap with Soto Solar/Ekhi's Iberian operations.
- Audax Renovables: Spanish renewable energy retailer and generator active in PPA supply, self-consumption, and energy services for industrial customers. Overlapping product set and Iberian customer base make it a direct comparable.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks5 records
Key highlights7 records
Customer concentration
Soto Solar social profiles
Digital presenceSoto Solar compliance and trust
Trust signalCompliance2 records
Soto Solar financial estimates
Financial estimateRevenue estimate
Valuation estimate
Soto Solar leadership team
Management profileNumber of profiles
Profiles2 records
Soto Solar funding detail
Funding detailFunding overview
Funding rounds1 record
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Soto Solar 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 Soto Solar
What does Soto Solar do?
Soto Solar develops, finances, and manages large-scale photovoltaic (PV) plants, offering a modular renewable energy platform structured around three Energy Blocks: generation, storage, and grid supply. The company delivers on-site and off-site solar Power Purchase Agreements (PPAs), engineering/procurement/construction (EPC) services, battery storage, EV chargers, and energy efficiency solutions to industrial and enterprise customers, primarily in Spain and Europe.
Is Soto Solar a public or private company?
Soto Solar is a private company. It is classified as venture growth investor backed and is currently operating.
When was Soto Solar founded?
Soto Solar was founded in 2018. It employs 11 to 50 people.
Where is Soto Solar based?
Soto Solar is headquartered in Madrid, Spain, in the Europe region.
How does Soto Solar make money?
Seven revenue lines are on record. PPA Onsite is the primary driver. The others are EPC Services, battery Storage, PPA Offsite/Virtual, EV Chargers, energy Supply and energy Efficiency Services.
Who are Soto Solar's main competitors?
Broad incumbents on record are Engie, Acciona Energía, Enel Green Power, EDP Renováveis and Iberdrola. Holaluz is listed as a regional player. Direct peers are Lightsource bp, Solarcentury (Statkraft), Grenergy and Audax Renovables.
Does Soto Solar have an API?
No public API is recorded for Soto Solar.
What industry is Soto Solar in?
Soto Solar's product category is Renewable Energy Solutions. Its primary akta.pro industry code is EUAMABAJ, Solar Financing, Leasing & Ownership Platforms (Tax Equity, PPA, Securitization), with a secondary code of EUAEAMAB, Renewable Energy Asset Management (Solar/Wind/Hydro/Geothermal). Its NAICS code is 221114 and its SIC code is 4991.