4 steps to an energy-efficient home
From consultation to guaranteed savings on your roof.
What happens in each phase?
Four steps from first advice to 25 years of guaranteed service.
Consultation & custom proposal
During a personal consultation, we analyze your energy consumption and determine which solution best suits your home. You receive a clear proposal with no fine print or hidden fees.
- No obligation — free advice session
- Exact custom savings calculation
- Clear numbers and 100% transparent advice
How long does it take?
From first contact to a certified installation and immediate savings.
- Week 1Consumption profile & roof scan
- Week 1–2Layout plan & wiring diagram
- Week 2–4AREI inspection & activation
How is this possible without own investment?
Zero hidden surprises. Here is how the unique partnership between advisor NRGEA and energy group Sparki works.
NRGEA is your independent energy advisor and single point of contact. We analyze your roof and consumption, engineer the optimal system, and guide the entire process. The hardware, pre-financing, and energy supply are powered by Sparki NV — a 100% Belgian energy group with over 15 years of experience and +250,000 contracts under management.
- 01
Sparki finances & installs the complete system
You pay a € 150 one-off activation fee for tier-1 solar panels, a smart home battery, and inverter. Sparki finances the hardware and remains responsible for 25 years of monitoring, maintenance, and intermediate replacements.
- 02
You enjoy a guaranteed low all-in rate
You consume generated solar energy at a fixed energy rate of € 0.02/kWh + Fluvius = € 0.27/kWh all-in. That is 30% to 50% cheaper than prevailing market rates, without feed-in fees or capacity peak spikes.
- 03
Grid balancing funds the system (Win-Win)
By intelligently orchestrating home batteries into a virtual power plant, your installation helps balance the Belgian grid. The revenue from grid balancing covers the initial capital investment — benefiting both the grid and your energy bill.
Our strength lies in the combination: NRGEA as your dedicated personal advisor for tailored design, Sparki as the well-capitalized Belgian energy partner. Together, we make solar energy and battery storage 100% risk-free and instantly profitable.
The network behind NRGEA
NRGEA works exclusively with energy group Sparki NV. Proven scale and solidity across Belgium in figures:
20% Market Share
Leading partner in residential solar energy and home batteries across Flanders.
Proprietary Virtual Power Plant
Active grid balancing through intelligent orchestration of distributed home batteries.
102 Charging Hubs · 434 Points
Nationwide ultra-fast EV charging network powering electric mobility.
SFPIM Backed
Supported with equity participation by the Belgian Federal Holding and Investment Company.
We get it. It almost sounds too good to be true.
No small print, no unexpected costs. Read all our honest answers to the most common questions.
Ready to get started?
Stop hesitating. Start saving.
Discover what NRGEA means for your home
100% Belgian · No purchase obligation · Free analysis