Coastal luxury villa, Ermioni
Kranidi Bay Road, 21051 Ermioni, Argolid, Greece
€1,650,000
New-build Ermioni villa in pine woodland above a sheltered bay. Envelope and heat pump are already efficient, so generation, storage and storm resilience carry the whole business case.
- Living area
- 260 m²
- Rooms
- 6
- Built
- 2021
- Occupants modelled
- 4
- Heating
- Heat pump
- Region
- Argolid / Peloponnese
Site & energy profile — Argolid / Peloponnese
Solar conditions
- South-east pitched roof, light pine shading
- 125 m² usable roof area
- 1,600 kWh/kWp regional yield · 7% shading derate
- Modelled at 1,488 kWh/kWp → 30,950 kWh/yr from 20.8 kWp
Load drivers
- Overflow pool above the bay with year-round filtration
- Heat pump comfort across a well-insulated 2021 envelope
- EV charged for the drive between Athens and Ermioni
- Pressure pumps for the hillside water supply
Resilience context
Coastal Peloponnese feeder — storm-related and seasonal-load outages.
Coastal Argolid feeder sees occasional winter-storm interruptions; whole-home backup covers pool plant, water pressure and comfort without full islanding.
Indicative storage for this profile: 16 kWh.
Home Energy IQ summary
Home Energy IQ score
Kranidi Bay Road, Ermioni, Argolid
Argolid / Peloponnese · 1,488 kWh/kWp modelled yield
Energy demand
42 kWh/m²a
Running cost
€4,413/yr
CO₂ footprint
8.96 t/yr
Potential after retrofit
Indicative annual saving
€3,831
Highest-impact next step
Rooftop solar PV
≈ €4,636/yr saved · payback 6.5 yrs
Recommended Home Energy IQ system
Property size of 260 sqm exceeds the HOME 10 envelope.
Modelled retrofit plan
Modelled for this Argolid / Peloponnese property at 1,488 kWh/kWp, with a €45,000 indicative budget and a bill-savings objective. Adjust the assumptions in the simulator to model your own scenario.
Annual saving
€3,831
Net investment
€33,860
incl. €600 subsidies
Simple payback
8.8 yrs
CO₂ avoided
7.67 t/yr
Your recommended Home Energy IQ configuration
VILLA ENERGY 30
Why this fits your property
- A 260 m² property using about 21,322 kWh of electricity a year sits inside the VILLA ENERGY 30 band (20,000–45,000 kWh/year).
- Your roof in Argolid / Peloponnese supports roughly 22,320 kWh of production a year, which the 15 kW inverter and 30–32 kWh battery are sized to use rather than export.
- A heat pump, pool circulation and EV charging push the evening load up, so storage is sized above the entry system.
Projected solar production
22,320 kWh/yr
15 kWp · 1,488 kWh/kWp in Argolid / Peloponnese
Self-powered
78%
Catalogue range 65–85%
Estimated backup
12 h
Essential comfort loads at ≈2 kW
Indicative investment
from €31,900
≈ €337/month over 10 years, excl. VAT
All figures are indicative model estimates for comparison, based on the details you entered. Production, self-powered share and backup duration depend on real weather, occupancy and tariffs. Nothing here is a quotation or a guaranteed performance figure.
Included in this configuration
- Solar PV
- 15 kWp
- Hybrid inverter
- 15 kW three-phase
- Battery
- 30–32 kWh LFP
- Backup
- Whole Home
- Whole-home automatic backup
- Smart Energy Gateway
- Dynamic zero export
- Home Energy IQ Advanced
- Solar forecasting
- Battery optimisation
Indicative installed price. Final pricing is subject to property survey, electrical infrastructure, grid connection, roof conditions and final engineering design.
Step 3 · Configure upgrades
Optional improvements
Your system works without any of these. They are shown because something in your inputs suggests they could be worth discussing at the assessment.
EV CHARGE
Charges the car on surplus solar instead of peak-tariff grid power — typically €300–€600 a year on the mileage assumed here.
You reported an electric vehicle.
Charge power and savings depend on your vehicle, tariff and daily driving pattern.
V2H READY
Prepares the electrical architecture so the vehicle could later support the house during an outage.
Only worth adding while the installation is being designed — retrofitting is more disruptive.
Actual vehicle-to-home operation depends on vehicle compatibility and applicable regulation.
SMART VILLA
Adds circuit-level metering and automatic load shifting, so the pool pump, heat pump and boiler run on solar rather than at night.
A pool pump is one of the largest shiftable loads on this property.
Circuit visibility requires CT clamps at the distribution board; without them, circuit values are estimated.
ENERGY CARE
Continuous monitoring, alerts and an annual performance review so underperformance is caught early rather than at year end.
Recommended for every installation; can be added or dropped later.
A recurring service subscription, separate from the installed system price.
Step 4 · Payment options
≈ €303.11/month
10% deposit (€3,190) · 10 years · 4.90% p.a. illustrative rate
Modelled energy saving
€319.25/month
Net +€16.14/month
Illustrative repayment estimate only — not a credit offer, quotation or approval. It assumes an indicative 4.90% annual rate, equal monthly instalments and the indicative system price before VAT and any subsidy. Actual terms depend on the lender, your circumstances and the final assessed price.
Step 5 · Confirm with an assessment
Confirm your Home Energy IQ plan
A site assessment validates roof and mounting, the electrical panel and connection, permitting requirements and the final price. Everything above stays an indicative model until an engineer has seen the property.
Your plan so far
- · Recommended system: VILLA ENERGY 30 (Premium Independence) — from €31,900 excl. VAT, indicative
- · Property profile: Argolid / Peloponnese · 15 kWp modelled at 1,488 kWh/kWp
- · Modelled outcomes: 22,320 kWh/yr solar · 78% self-powered · ≈12 h backup (Essential comfort loads)
- · Options to discuss: base configuration only
- · Financing interest: not reviewed yet
Prefer to read first? Detailed financing calculator · How assessments work
Today
42 kWh/m²a
€4,413/yr · 8,955 kg CO₂
After recommended plan
40 kWh/m²a
€582/yr · 1,285 kg CO₂
Projected class movement
Cumulative saving over 10 years (with 3% annual energy price inflation): €43,918
What your recommended system delivers
Every line below is delivered by VILLA ENERGY 30 or one of its optional Home Energy IQ modules — ranked by impact per euro against your goal and budget.
Rooftop solar PV
Generates power at roughly a third of grid price for 25+ years.
Delivered by your recommended Home Energy IQ system
- Net cost
- €30,160
- Saving/yr
- €4,636
- Payback
- 6.5 y
Smart energy manager & hydronic balancing
Cheapest measure per euro saved and the data layer for everything that follows.
Optional add-on: SMART VILLA module
- Net cost
- €1,800
- Saving/yr
- €131
- Payback
- 13.7 y
Smart EV charger (11 kW)
Charges on surplus solar instead of peak-tariff grid power.
Optional add-on: EV CHARGE module
- Net cost
- €1,900
- Saving/yr
- €74
- Payback
- 25.7 y
Catalogue options outside your budget
Home battery storage
Shifts midday solar into evening use and raises self-consumption to ~70%.
Delivered by your recommended Home Energy IQ system
- Net cost
- €14,920
- Saving/yr
- €806
- Payback
- 18.5 y
All figures shown are indicative estimates generated from standardised building models and average market prices. They are not a certified energy performance assessment, an engineering report, or financial advice. Actual savings, costs, subsidies and payback depend on an on-site assessment of your property.
All figures shown are indicative estimates generated from standardised building models and average market prices. They are not a certified energy performance assessment, an engineering report, or financial advice. Actual savings, costs, subsidies and payback depend on an on-site assessment of your property.