Live · producing12.4 kWp
Marbella · Villa
Install
€18,900
Savings
€3,420 / yr
Payback
5.5 yrs
SX // 2026 · Costa del Sol — Marbella
Turn your roof into a power plant.
Slash electricity bills, generate decades of long-term savings, and earn from the excess energy you feed back into the grid.
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Live savings calculator
See exactly what solar would earn you.
Move the dials. Watch your real returns update in real time — installation cost, payback, 20-year savings, and grid sell-back.
Typical Spanish home: €120–€350
Property type
Location
Sun-hour adjustment: ×1.00 vs Costa del Sol baseline
Usable south-facing area
Share of electricity used while the sun is up
20-year savings
€48,430
Yearly savings
€2,743
Payback period
5.9 yrs
Estimated install
€16,300
€83.1k
€62.3k
€41.6k
€20.8k
€0
€-1k
5y
Year 5 projection
-€1,352
Net savings after install
Gross savings€14,948
Install cost− €16,300
Yearly avg€2,743
Assumes 1.8%/yr energy inflation, 100% self-consumption baseline, Spain residential rates.
€16.1k
10y
Year 10 projection
€16,065
Net savings after install
Gross savings€32,365
Install cost− €16,300
Yearly avg€2,743
Assumes 1.8%/yr energy inflation, 100% self-consumption baseline, Spain residential rates.
€36.0k
15y
Year 15 projection
€35,950
Net savings after install
Gross savings€52,250
Install cost− €16,300
Yearly avg€2,743
Assumes 1.8%/yr energy inflation, 100% self-consumption baseline, Spain residential rates.
€58.3k
20y
Year 20 projection
€58,304
Net savings after install
Gross savings€74,604
Install cost− €16,300
Yearly avg€2,743
Assumes 1.8%/yr energy inflation, 100% self-consumption baseline, Spain residential rates.
€83.1k
25y
Year 25 projection
€83,127
Net savings after install
Gross savings€99,427
Install cost− €16,300
Yearly avg€2,743
Assumes 1.8%/yr energy inflation, 100% self-consumption baseline, Spain residential rates.
CO₂ saved / year
14.4 t
Like removing 3 cars
Grid sell-back / yr
€132
Excess fed to the grid
20-year ROI
297%
Versus cash in the bank
From only
€170 / month financed
Live breakdown
Where every euro comes from
Updates as you adjust the calculator above
Annual cashflow
Bill savings (self-consumption)
Solar + battery offsetting your usage
+ €2,363
Appliance offsets (EV / pool)
Surplus energy powering high-draw devices
+ €380
Grid feed-in credits
Excess solar sold back to the grid
+ €132
Net yearly savings€2,875
vs current yearly bill€2,640
Investment & ROI
Installation cost
Panels, inverter, mounting, labour
− €16,300
If financed (96 months)
Indicative monthly payment
€170 / mo
Break-even
Approx. 71 months from install
5.9 yrs
20-year ROI297%
20-year net profit€48,430
ROI timeline
System cost recovered at year 5.9
Year 0Year 10Year 20
Install
− €16,300
Break-even
Year 6
Year 20
+ €48,430
Why Solar-X
Engineered for the homes of tomorrow.
Premium-tier panels, smart inverters, and AI-optimised energy distribution — designed and installed by certified Spanish engineers.
Lower bills
Cut electricity costs by up to 70% from month one.
Energy independence
Insulate yourself from rising energy prices for 25+ years.
Battery backup
Power your home through outages, day or night.
EV ready
Charge your car from your roof, not the grid.
Property value
Boost resale value by an average of 12%.
Real impact
Offset tonnes of CO₂ every year — measurable, audited.
The Spain advantage
320 days of sunshine a year — fewer panels, higher returns.
Spain receives roughly 320 sunny days annually, far above the European average. Each panel on your roof generates significantly more electricity than the same panel installed in Northern Europe — so you need fewer panels to cover your usage, lowering install cost and accelerating payback.
320
sunny days / yr
+40%
yield vs N. Europe
How it works
From consultation to decades of returns.
Step 01
Free assessment
On-site or remote scan. We map your roof, sunlight, and consumption.
Step 02
Custom system design
Engineers design a system tuned to your home, lifestyle and goals.
Step 03
Premium installation
Certified crews install in 1–3 days with insurance-backed work.
Step 04
Grid connection
We handle paperwork, permits and grid sell-back agreements.
Step 05
Lifetime savings
Monitor performance from your phone. Earn for 25+ years.
The math
Your roof could be one of your best investments.
Energy prices climb. Your solar costs barely move. Drag the slider and see what waiting really costs you.
Grid energy cost
Solar with Solar-X
Horizon: 15y
Spent on grid
€66,931
Spent with Solar-X
€13,420
Saved over 15 years
€53,511
Assumes 7% annual energy price inflation. Spain residential average — adjustable in your personal report.
Real results
Live performance from real homes.
Every Solar-X system is monitored 24/7. Here's what's happening on real Spanish rooftops right now.
Live · producing6.8 kWp
Estepona · Townhouse
Install
€11,200
Savings
€1,980 / yr
Payback
5.7 yrs
Live · producing16.0 kWp
Mijas · Villa + Pool
Install
€24,500
Savings
€4,810 / yr
Payback
5.1 yrs
Trusted across Spain
Built on guarantees, backed by results.
25-year panel warranty
10-year installation guarantee
Certified Spanish engineers
0% finance available
"Cut our bill from €380 to €58. The team was meticulous — felt like Apple installed our roof."
"From quote to grid connection in 9 days. Honest numbers, no upsell. Already paying us back."
"The monitoring app is beautiful. We made €240 selling back excess in our first 3 months."
FAQ
Everything you actually want to know.
For a residential villa in Spain, systems typically range from €11,000 to €25,000 depending on roof size, battery, and EV charging. Our 0% finance lets most homeowners go solar for less than their current monthly bill.
Energy prices rose 27% over the last 3 years
Every month you wait is money lost.
Lock in lower long-term costs today. Free assessment, no obligation, a personal report in 48 hours.
@solar.x.es
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Real installs, real homes across the Costa del Sol. Tap any post to follow our work.
