Case Study - Sustainable Island Power | Volthein s.r.o.

Sustainable Island Power: A Microgrid Solution.

Infrastructure for hotel complexes is currently being built on the islands. Currently, the only plan to cover energy needs is the use of local diesel generators, which are neither ecological nor economical.

Get to know more

CLIENT

Situation.

A cluster of islands in Dubai required energy infrastructure built entirely from scratch. With 35 GWh yearly consumption, 24/7 operation, and only diesel generators (4.5 MW) as the existing source, the challenge was clear:

Eliminate dependency on costly and inefficient diesel logistics
Deliver a green, self-sufficient energy system
Ensure round-the-clock reliability in an isolated environment

The goal: design a sustainable island microgrid powered primarily by photovoltaics.

4.5 MW
dieselgenset installled

24/7
operation time

35 GWh
yearly consumption

PV Energy Output - kilowatthour

OUR

Solution.

The entire system is operated through an advanced EMS (Energy Management System) that forecasts production, manages storage dispatch, and optimizes TCOE (Total Cost of Energy).

PV
4.7 MWp
Rooftop + tracker-based installation
High yield: up to 1,725 kWh/kWp annually

BESS
3.5 MW / 14 MWh
Short-term storage for day-to-night energy shifting
Maintains technical parameters (frequency, voltage, power factor)

Hydrogen System
1 MW / 2,500 kg
Long-term storage in hydrogen tanks, sustaining 5 days of operation
Fuel cell reconverts hydrogen into electricity when needed

Diesel Generators (Existing – 4.5 MW)
Retained only as a last-resort backup for redundancy

Output

Results.

Building a 35 GWh/year island microgrid in Dubai required replacing inefficient 4.5 MW diesel generators with a fully renewable, self-sufficient system. Operating 24/7, the challenge was to ensure reliable supply and stable grid parameters in a completely off-grid environment.

With 4.7 MWp PV, 3.5 MW / 14 MWh battery storage, and hydrogen capacity for 5 days of autonomy, Volthein created a sustainable energy ecosystem that guarantees stability, reduces long-term costs, and eliminates diesel dependency.

The challenge: transform diesel-reliant islands into 100% renewable-powered microgrids with long-term resilience.