What DECCI does

DECCI a.s. is a privately held Czech energy group founded in 2007, headquartered at V Šáreckém údolí 764/1 in Prague 6, and operating exclusively within the Czech Republic. The business is conducted through wholly-owned subsidiaries including DECCI SERVIS s.r.o. (operations and maintenance), FVE CZECH a.s. and FVE CZECH NOVUM s.r.o. (photovoltaic asset owners), and E.nest Energy a.s. (hybrid/balancing operations). It is organized around three sub-brands targeting distinct customer segments: DECCI ENERGY for utilities and large-scale renewable developers, DECCI FIRMY for commercial and industrial clients (industrial, agricultural, hospitality, carports), and DECCI HOME for residential customers. Total owned or operated energy assets span ~41.5 MW of photovoltaic capacity (FVE Vepřek at 35 MWp being one of the largest solar plants in CEE, plus FVE Smiřice, FVE Bělá, FVE Klatovy), a 52.4 MW hybrid power plant at Vraňany (Energy Nest, combining six aeroderivative gas turbines with a 20 MW / 22 MWh battery system, the largest BESS in Bohemia), 6.6 MW of wind (VTE Maletín, three Vestas turbines nearing commissioning in 2025), and a 20 MW / 40 MWh battery storage project (BESS Vraňany) under construction from late 2025.

The technical backbone rests on a long-running R&D partnership with Czech Technical University (ČVUT and CIIRC ČVUT, since 2010) that produced the proprietary Energy Nest control system and the AI-driven autonomous Robotic Inspector for large-scale PV diagnostics. Energy Nest provides frequency containment (FCR), aFRR+, and mFRR balancing services to grid operator ČEPS, displacing services historically supplied by coal-fired plants and enabling rapid transitions between +35 MW and -10 MW output in tens of seconds. The in-house FVE CZECH operational diagnostic platform delivers sub-minute fault response, PASAN flash testing, thermographic inspections, and string-level monitoring across 45 MWp of third-party assets serviced under DECCI SERVIS contracts. Residential customers benefit from the government 'Nová zelená úsporám' (NZÚ) subsidy, capped at 140,000 CZK per installation, which DECCI administers end-to-end.

Revenue is generated across four overlapping streams: electricity sales from owned assets, one-time project fees for design and construction (across all three segments), recurring managed services from O&M contracts (45 MWp currently), and capacity/energy payments from grid balancing services (Energy Nest) and soon BESS Vraňany via aggregator Nano Energies. Pricing is quote-based and project-specific; no public tariff exists. Sales are executed entirely in-house via direct field sales for enterprise and C&I clients and phone, email, or online inquiry forms for residential. The 750 million CZK club loan arranged in September 2023 from Česká spořitelna and Komerční banka was the first project financing of its kind for an energy asset on the open Czech market; total announced investment across portfolio modernization is approximately 2 billion CZK (~85M USD).

Name

DECCI

Legal name

DECCI a.s.

Website

https://decci.cz

Company type

Private

Founded year

2007

Operating status

Operating

Headcount range

1–10 employees

Short description

DECCI a.s. is a privately held Czech energy group operating solar, wind, battery storage, and hybrid power plants in the Czech Republic, serving utilities, commercial clients, and residential customers through in-house design, construction, operations, and grid balancing services.

Ownership category

akta.pro rank

Headquarters

HQ city

Prague

HQ country

Czechia

HQ region

Europe

Offices4 records

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

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

Revenue model

1. Renewable Energy Asset Ownership and Operation: DECCI owns and operates a portfolio of photovoltaic power plants (FVE Vepřek, FVE Smiřice, FVE Bělá, FVE Klatovy), wind turbines (VTE Maletín), and hybrid/ storage assets (Energy Nest, BESS Vraňany). Revenue is generated by selling electricity produced and providing power balancing services. The company also sells electricity from client-installed systems.
2. FVE Design, Construction and Commissioning Services: DECCI designs, constructs, and commissions solar installations for utilities, commercial clients, and residential customers. Services include site selection, project documentation, component procurement, installation, and grid connection. Revenue is earned as one-time project fees.
3. Operations, Maintenance and Monitoring Services: DECCI Servis provides comprehensive O&M services including administrative (insurance, billing, distributor reporting, ERÚ), operational (24/7 remote monitoring, fault resolution, thermographic and PASAN panel testing), security, and maintenance (snow removal, vegetation management) for solar plants. Currently servicing 45 MWp of installed capacity.
4. Power Balancing and Grid Stabilization Services: Energy Nest provides power balancing services (FCR, aFRR+, mFRR) to the grid operator ČEPS, generating revenue from capacity and energy payments. BESS Vraňany will provide similar services through aggregation partner Nano Energies.
5. Residential FVE Installations: DECCI HOME installs rooftop solar systems for households, handling the full process including subsidy application (NZÚ) and ongoing servicing. Revenue is earned as project-based installation fees.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels6 records

Core offering

DECCI is a vertically integrated Czech renewable energy group that designs, builds, owns and operates photovoltaic power plants, wind farms, battery energy storage systems, and the Energy Nest hybrid power plant. Through its DECCI ENERGY, DECCI FIRMY, and DECCI HOME divisions it delivers utility-scale, commercial/industrial, and residential solar installations, complemented by long-term operations, monitoring, and maintenance services executed in-house through wholly owned subsidiaries.

Product overview

DECCI is an energy group offering integrated renewable energy solutions through distinct product lines. DECCI ENERGY handles large-scale photovoltaic power plants (FVE Vepřek, FVE Smiřice, FVE Klatovy). The Energy nest is a flagship hybrid product combining gas turbines with battery storage for grid stabilization. DECCI HOME and DECCI FIRMY serve residential and commercial segments respectively. FVE CZECH serves as the operational brand for photovoltaic assets. DECCI also provides comprehensive servicing (DECCI SERVIS) for all installed systems, and recently expanded into wind energy with VTE Maletín. Battery storage solutions (Bateriová úložiště) are offered both as standalone installations and integrated with other energy sources.

Differentiator

Problem solved

Functional benefit

Brands

• DECCI ENERGY: Implementation, operation and service of large energy units including photovoltaic power plants, battery storage, and hybrid solutions
• DECCI FIRMY
• DECCI HOME
• FVE CZECH
• ENERGY NEST

Products and services

• Energy nest Hybrid energy source combining six aeroderivative gas turbines (32.4 MW) with a 20 MW / 22 MWh battery storage system for grid stabilization and power balancing services (FCR, aFRR+, mFRR5, mFRR12.5). Marketed to grid operator ČEPS and to utilities/integrators needing dispatchable, flexible capacity.
• Bateriové úložiště Vraňany (BESS Vraňany) Standalone large-capacity battery energy storage system (20 MW / 40 MWh) connected via shared local distribution infrastructure with nearby FVE Vepřek, providing dynamic demand management, flexibility aggregation, and grid balancing services. Targets utilities and grid operators.
• VTE Maletín (Wind Power Plant Maletín) Wind power plant in the Šumpersko region with three wind turbines (3 x 2.2 MW) totaling 6.6 MW installed capacity. Sells electricity into the Czech grid and represents DECCI's expansion into wind energy.
• FVE Vepřek Owned utility-scale photovoltaic power plant with 35 MWp installed capacity on 82.5 hectares in the Mělnicko region of the Czech Republic. Generates and sells electricity to the grid, and serves as the anchor site for the FVE CZECH operational diagnostic platform and the AI-powered robotic inspector.
• DECCI FIRMY (Commercial and Industrial Solar Solutions) Full-lifecycle photovoltaic solution for commercial and industrial customers including manufacturing, agricultural, hospitality, and logistics facilities. Covers rooftop, ground-mounted, and carport installations with project analysis, financing advice, subsidy support, installation, commissioning, and ongoing operations and maintenance.
• DECCI HOME (Residential Solar Solutions) Rooftop photovoltaic and battery storage solutions for households across the Czech Republic. Includes free consultation, proposal, Nová zelená úsporám (NZÚ) subsidy application support up to 140,000 CZK, installation, commissioning, and after-sales service.
• DECCI SERVIS (Operations, Maintenance and Monitoring Services) Comprehensive service offering for photovoltaic power plants covering administrative tasks (insurance, billing, distributor reporting, ERÚ), 24/7 remote monitoring, fault resolution, thermographic and PASAN flash panel testing, security, snow removal, and vegetation management. Currently servicing 45 MWp of installed capacity across the FVE CZECH brand.
• DECCI ENERGY (Large Energy Complex Solutions) Design, construction, operation, and service of large-scale energy complexes including photovoltaic power plants, battery storage, and hybrid energy sources (Energy Nest). Targets utilities, energy groups, municipalities, and industrial customers via direct engagement on multi-MW projects.
• FVE CZECH (Photovoltaic Asset Brand and Service System) Registered trademark and brand representing the comprehensive design, construction, and management system for photovoltaic power plants under the FVE CZECH subsidiaries. Currently encompasses 45 MWp of installed capacity in the Czech Republic with full operational diagnostics.

Quantifiable outcome

• Energy Nest provides power balancing services up to -10 to +35 MW regulation power, contributing to Czech grid stability during the July 2024 blackout event
• +4 more outcomes

Named customers3 records

Segments4 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

14 partnerships are on record, tiered core and minor.

• SiemenscoreTechnology or Integration · 10 July 2024General contractor for the construction of Energy Nest hybrid power plant. Siemens provided the overall project execution and integration of technologies for the facility in Vraňany.
• Centrax Ltd (UK)coreTechnology or IntegrationSupplier of aeroderivative gas turbines for Energy Nest. Centrax is a UK-based specialist in gas turbine packages derived from aircraft engines. This was the first use of these technologies together for grid regulation purposes, opening new market opportunities for both parties.
• SMA Altenso (Germany)coreTechnology or IntegrationSupplier of battery storage technology for Energy Nest. German specialist in energy storage systems and power electronics. The battery system (20 MW / 22 MWh) is the largest in the Czech Republic.
• GAZ EnergycoreTechnology or IntegrationCzech company serving as battery supplier for BESS Vraňany. Specialist in comprehensive and safe BESS systems including control technologies. Selected based on technical and cybersecurity criteria and spare parts availability.
• VestascoreTechnology or IntegrationDanish global leader in wind turbine manufacturing with over 40 years of experience. Supplier of three wind turbines (3 × 2.2 MW) for VTE Maletín wind farm. DECCI describes Vestas as a partner of world leaders in wind turbine manufacturing.
• FORTEX AGSminorImplementation/ SI/ Consulting PartnerLocal construction company engaged for the construction of VTE Maletín wind farm. DECCI prefers local suppliers where possible. FORTEX AGS was responsible for civil works and turbine installation.
• CIIRC ČVUT (Czech Institute of Informatics, Robotics and Cybernetics)coreStrategic or Co-development PartnerLong-term R&D partner developing the proprietary control system for Energy Nest and AI-powered robotic inspector for FVE Vepřek. Ondřej Mamula from CIIRC sits on the Vraňany municipal council, facilitating community engagement for Energy Nest. Petr Stejskal developed digital twin simulator for Energy Nest.
• Nano EnergiescoreStrategic or Co-development PartnerEnergy flexibility aggregation specialist that monitors and trades energy flexibility for BESS Vraňany. Nano Energies provides market access for power balancing and flexibility services, managing trading based on market needs.
• HuaweiTechnology or IntegrationSupplier of inverter technology for DECCI's commercial and residential solar installations. Four 50 kW inverters from Huawei were used in the Emma Sophia Stables project.
• Solární asociace (Solar Association)coreStrategic or Co-development PartnerDECCI is a founding member and active member of the Czech Solar Association. The company participates in industry advocacy, legislative discussions, and annual conferences including 'Solární energie a akumulace v ČR'.
• AKU-BAT (Association for Energy Storage)coreStrategic or Co-development PartnerDECCI is a founding member of AKU-BAT, the first association of its kind in the Czech Republic for energy storage. The association advocates for battery storage and other accumulation forms to be recognized in Czech legislation.
• Svaz moderní energetiky (Modern Energy Union)coreStrategic or Co-development PartnerDECCI entered a strategic partnership with the Modern Energy Union in 2025 to promote broader adoption of modern energy sources and innovative management approaches. Darina Merdassi is a member of the union's board.
• EuroenergyminorImplementation/ SI/ Consulting PartnerCzech advisory firm involved in the Energy Nest project, contributing to financing negotiations and project structuring.
• ČEPSminorOthersCzech electricity transmission system operator. Energy Nest provides power balancing services to ČEPS, which were previously supplied primarily by coal-fired power plants.

Scale indicators12 records

Recent moves9 records

Expansion highlights6 records

Broad incumbents

• ČEZ Group: Dominant Czech utility operating generation across nuclear, coal, hydro, solar and wind with grid-balancing activities. Overlaps with DECCI across solar generation, BESS, and ancillary services to ČEPS, but at vastly larger scale and with a much broader (and fossil-heavy) portfolio.
• Encavis AG: German-listed IPP operating a large solar and wind generation portfolio across Europe. Comparable to DECCI on operating owned renewable assets and selling power under PPAs/market arrangements, though at significantly larger scale and with broader geographic exposure.

Direct peers

• Photon Energy: Amsterdam-headquartered but with deep Central European (including Czech) roots, Photon Energy is a vertically integrated solar IPP and EPC across CEE/Australia. Directly comparable to DECCI on utility-scale PV development, C&I/residential solar, and O&M services.
• Nano Energies: Czech flexibility aggregator and BESS operator that DECCI partners with for BESS Vraňany trading. Directly comparable as a flexibility-market participant and a potential competitor for distributed energy storage and balancing revenue in the Czech market.
• Solek Group: Czech-founded solar IPP and EPC developer active across CEE and Latin America. Comparable to DECCI on utility-scale PV development, project finance execution, and operations of multi-MW solar portfolios.
• Enlight Renewable Energy: Public Israeli renewable IPP with operational solar, wind and storage assets across Europe, the U.S. and Israel. Comparable to DECCI as a multi-technology renewables developer/owner emphasizing grid-scale assets and storage integration.
• Solar Global: Czech solar EPC and IPP focused on commercial, industrial and utility-scale PV in the Czech Republic. Directly comparable to DECCI FIRMY and DECCI ENERGY in target market, customer profile and project lifecycle offerings.

Regional players

• SEV.en Energy: Czech private energy group operating coal, solar and battery assets in the Czech market. Comparable to DECCI as a domestic competitor in Czech generation and increasingly in grid-flexible assets, with overlapping exposure to ČEPS balancing markets.

Emerging players

• Fluence Energy: Global BESS integrator and software provider (Siemens-AES JV heritage). Comparable to DECCI's BESS Vraňany project on the technology stack side, and overlaps with DECCI Servis in operating and optimizing storage assets.
• Wärtsilä Energy Storage: Provider of grid-scale BESS and hybrid energy solutions with significant European footprint. Comparable to DECCI's Energy Nest on the gas-turbine + storage hybrid model and on supplying balancing and ancillary services to TSOs.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat7 records

Key risks6 records

Key highlights6 records

Customer concentration

• YouTubeyoutube.com/@decci_cz
• LinkedInlinkedin.com/company/decci

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 records

Subsidiaries10 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 DECCI