01
Green Hydrogen
Sizing, power conversion, balance of plant and integration of electrolysers, renewable generation, storage and water-treatment systems.
Energy-transition engineering
Engineering the systems that power the energy transition.
DEREC Consulting provides specialised engineering for green hydrogen, battery storage, EV charging and hybrid power systems — from feasibility and grid studies to detailed engineering and commissioning.
- Digital
- Efficient
- Reliable
- Ecological
- Compact
Who we are
A consulting and engineering firm dedicated to hybrid technologies.
We design integrated energy systems around power conversion, energy storage and intelligent energy management. Our multidisciplinary team supports projects from initial concept to start-up.
02
Battery Storage
Battery sizing & BESS electrical engineering from the MV station and distribution system to PCS units, battery containers and EMS.
03
EV Charging
Electrical infrastructure, grid integration, power conversion and energy management for high-power charging installations.
Our services
360° engineering,
end to end.
A single engineering partner across the full project lifecycle — from the first feasibility study to on-site commissioning and performance validation.
- 01
Feasibility & business planning
Technical consulting, budget estimation, incentive assessment, technical-economic analysis and investment planning.
- 02
Engineering
Electrical, Mechanical, Process and Executive Engineering.
- 03
Power conversion design
SCR & IGBT rectifiers, transformer sizing, AC/DC, AC/AC, DC/DC, DC/AC converters.
- 04
Battery sizing & BESS integration
Batteries, PCS, MV/LV distribution, protection and energy management.
- 05
Green hydrogen design
Electrolyser sizing, DC power supply, process integration and balance of plant.
- 06
EV charging infrastructure
Charging hubs, grid connection, storage integration and load management.
- 07
Grid & power-quality studies
Load flow, short circuit, harmonic analysis, THD, power factor and DC ripple.
- 08
Authorization & permitting
Technical documentation and support for RES and storage projects.
- 09
FMEA, CFD & HAZOP
Reliability, risk and process-safety studies.
- 10
Commissioning & technical support
Start-up, troubleshooting and performance validation.
Hybrid systems & DC grids
From the MV station to the DC bus.
DEREC integrates renewable generation, power conversion, batteries, electrolysers, fuel cells, EV charging and intelligent energy management into one coordinated system. Our differentiator is the integration of technologies.
PV
Wind
Grid
MV Station
Transformer & AC Distribution
Power conversion
Shared AC or DC Bus
BESS
Electrolyser
EV Charging
EMS · Energy Management
Power quality matters
Three numbers that define the project.
< 5%
DC ripple
Supporting electrolyser efficiency and stack lifetime.
> 0.95
Power factor
Grid compliant and transformer optimized.
< 3%
THD with IGBT AFE
Maintained across the operating range.
Indicative engineering targets. Final requirements depend on the specific project, grid code and selected equipment.
Why DEREC
Tailor-made. Integrated. Proven.
Vendor neutral
Hybrid by design
CAPEX & OPEX optimized
From study to start-up
Engineering capabilities
A full multidisciplinary team.
Electrical, process, automation and mechanical engineering under one roof — supported by a modern design and simulation toolchain.
- Electrical Engineering
- Instrumentation
- Automation & PLC
- Mechanical Engineering
- Process Engineering
- Project Management
- R&D
- Technical Sales
Design & simulation toolchain
- EPLAN
- Siemens TIA Portal
- CODESYS
- Rockwell Automation
- Electro Graphics
- Ampère Professional
Our partners
A network of industrial and research collaborations.
Our Main Partners
Our Research & Development activities
News
Fairs, awards and upcoming events.
Fiera Idrogeno — Veronafiere 2026
Veronafiere, Hall 4 · 7–8 October 2026
Fiera Idrogeno will take place at Veronafiere on 7–8 October 2026, Hall 4. DEREC will be exhibiting — come and visit us at our stand.
Solar & Storage Live Italia 2026
Veronafiere, Verona · 7–8 October 2026
DEREC will attend Solar & Storage Live Italia 2026 at Veronafiere, Verona, on 7–8 October. Meet our team to talk about solar, storage and hybrid-power projects for residential, commercial, industrial and utility applications.
Winner — Italian Hydrogen Technology Awards 2026
Premio Società di Servizi — Engineering & EPC · 2026
DEREC Consulting is the winner of the Italian Hydrogen Technology Awards 2026 in the “Premio Società di Servizi — Engineering & EPC” category, recognition of our engineering work in the hydrogen sector.
Hydrogen Expo 2026 — Piacenza
Piacenza Expo · 9–11 June 2026
DEREC will exhibit at Hydrogen Expo 2026, the biggest Italian exhibition and conference dedicated to the hydrogen industry, at Piacenza Expo on 9–11 June 2026. Come and visit us at our stand.
About us
An engineering boutique for the energy transition.
DEREC Consulting is an Italian engineering and technical consulting firm, founded in 2021 by Giuseppe Grassi and based in Milan at the Italian Electrotechnical Committee (CEI), in via Saccardo 9. It is an engineering “boutique” specialised in the energy transition, focused on the design and integration of high-efficiency systems.
DEREC is an English acronym that captures the company's engineering philosophy and the quality pillars behind every project. The word is formed from the initials of the five fundamental requirements (the so-called “DEREC requirements”) that every well-designed technological system should have: Digital, Efficient, Reliable, Ecological and Compact. The name is a methodological statement of intent: creating solutions that meet these five requirements is synonymous with the highest engineering quality — whether for green-hydrogen plants, battery-storage systems, vehicle charging or hybrid systems.
“Energy storage to be used when and where it is needed”: this is how DEREC Consulting's founder, Giuseppe Grassi, sums up the energy transition.
Using energy efficiently and producing it from renewable sources (RES) cuts CO₂ emissions, but what is new is the focus on storing energy when it is not being used or produced by RES, so it can be reused at another time or place by extracting it with power converters. DEREC integrates energy storage and converters into intelligent grids that optimise energy flows, making it the ideal partner for the energy transition. Beyond batteries, energy can also be stored in hydrogen molecules produced by electrolysis — an ideal solution for long-duration storage or transport over long distances. Hydrogen and batteries are not competitors: on the contrary, electrolysers work better when paired with batteries. DEREC has worked on the largest green-hydrogen project in Europe (750 MW), on the feasibility of numerous PNRR tenders, and on a mobile electrical storage system that is replacing diesel generators in commercial applications and outdoor events.
Group & presence
Two hubs. One mission.
A presence in Europe and the Middle East lets DEREC bridge engineering standards between two major energy markets.
Milan · Italy
DEREC Consulting
Energy transition, engineering and tailor-made systems.
Dubai · UAE
DEREC Contracting
Power, oil & gas, and water-treatment projects.
An open-innovation network
DEREC collaborates with more than 20 technology providers, engineering companies, universities and research organizations worldwide.
- Technology providers
- Industrial companies
- Universities
- Research organizations
- EPC partners
- Grid & utilities
Let's build it
Let's engineer your energy-transition project.
Talk to our engineering team about your hydrogen, BESS, EV charging or hybrid-power project.