✓ Results updated

Is solar relevant for your home?

Estimate production, self-consumption, savings and payback using local solar data and a full hourly simulation.

Local solar data 8,760 hours simulated Clear economic analysis

Full hourly simulation via PVGIS · Transparent and editable assumptions

Financial parameters

Elec. price (€/kWh)

Feed-in tariff (€/kWh)

Install cost (€)

Subsidies (€)

Degradation (%/yr)

Price increase (%/yr)

Pre-filled by country · Editable

Result preview Relevant

Production

5,820

kWh/yr

Self-consumption

Savings

840

/yr

Payback

8.2

years

Quick estimate · Indicative values

Latitude

Longitude

How to use the simulator

— Locate your roof on the map or enter an address

— Check financial parameters: if your country is in our database, some assumptions are pre-filled; otherwise, enter at least the electricity price and the installation cost to unlock the financial analysis

— Adjust the installed panel area, orientation and tilt

— Enter your annual electricity consumption

— Add the future appliances or uses you want to include

— Run the simulation: the simulator calculates actual solar production, your self-consumption rate and installation profitability

Annual savings

Payback period

Self-consumption

Sizing ratio

📊 Sensitivity analysis

What if assumptions vary by ±15%?

Scenario	Elec. price	Install cost	Production	Payback	25y gains
⬇ Pessimistic	—	—	—	—	—
● Base (current)	—	—	—	—	—
⬆ Optimistic	—	—	—	—	—

Pessimistic: elec. price −15%, install cost +15%, production −15%. Optimistic: reversed. This gives a realistic range around your simulation.

📊 Production & Performance

Annual production

—

kWh

Total energy produced by your panels in 1 year, calculated hour-by-hour using PVGIS irradiation data for your location.

Production per kWp

—

kWh/kWp

Installation yield: kWh produced per kWp installed. Allows comparing efficiency between sites (800–1,800 depending on location).

Installed capacity

—

kWp

Peak power of your system = installed panel area × panel efficiency for the selected panel type.

💰 Savings & Revenue

Self-consumption savings

—

€

Money saved by consuming your solar production directly instead of buying from the grid (self-consumed kWh × electricity price).

Feed-in revenue

—

€

Revenue from selling surplus electricity to the grid (excess kWh × feed-in tariff for your country).

Annual savings

—

€

Total yearly benefit = self-consumption savings + feed-in revenue. This is the real financial gain from your system each year.

📈 Investment & Returns

Installation cost

—

€

Total gross cost: panels + inverter + installation + grid connection (+ battery if enabled). Based on country average or your custom value.

Net cost after subsidies

—

€

Actual cost after deducting your country's subsidies and incentives (self-consumption bonus, tax credits, etc.).

Payback period

—

years

Years until cumulative savings cover the net cost. After this point, your system generates pure profit.

Net gains 25 years

—

€

Cumulative savings over 25 years minus initial net cost. Factors in annual electricity price increases and panel degradation. Not discounted.

IRR

—

Internal Rate of Return: equivalent annual return on your investment. Compare with bank savings (~3%) to assess profitability.

CO₂ avoided

—

kg/year

CO₂ emissions avoided thanks to your solar production, based on the emission factor of your country's electricity mix.

Payback period (25 years)

Annual energy flow

Self-consumption rate

—

Share of your solar production consumed on-site (directly or via battery) instead of being exported to the grid.

Solar coverage

—

Share of your total consumption covered by solar. Indicates your level of energy independence.

Direct self-cons.

—

kWh

Solar energy consumed instantly at the time of production, without going through the battery or the grid.

Via battery

—

kWh

Solar energy stored in the battery and later used for your consumption (evening, night, cloudy days).

Grid injection

—

kWh

Surplus solar energy not consumed or stored, exported to the grid and sold at the applicable feed-in tariff.

Grid draw

—

kWh

Energy purchased from the grid to cover needs not met by solar or battery.

Monthly profile

Month	Production (kWh)	Consumption (kWh)	Self-cons. (%)	Injection (kWh)

Monthly profile

Energy distribution

Typical summer day (June-July)

Typical winter day (Dec-Jan)

Battery comparison

Subsidies and incentives

System summary

📄 Solar Analysis Report

Run a simulation to generate the report.

⚠️ Assumptions & limitations of this simulation

Irradiation data — sourced from PVGIS (European Commission), TMY database. Reflects a typical meteorological year, not actual year-to-year variability.

Tariffs & subsidies — pre-filled from public sources (Eurostat, national regulators). Indicative values that may be outdated. Check your electricity bill and installer quotes.

Taxation — not integrated or only partially. Actual tax impact (income tax on feed-in revenue, VAT, capital gains) depends on your personal situation.

Maintenance — not included. Allow approximately 1–2% of initial cost per year for routine maintenance (cleaning, inverter, inspections).

Battery — simplified model (fixed efficiency, linear degradation). Does not simulate thermal management, partial cycles, or calendar ageing.

Net gains over 25 years — cumulative, not discounted. Inflation and opportunity cost of capital are not factored in.

Sensitivity — results are sensitive to electricity price, installation cost, and consumption assumptions. A ±10% variation in these parameters can significantly change the verdict.

Is solar relevant for your home?

How to use the simulator

● Location

● Electricity consumption

A Current consumption

B Planned equipment

C Simulated consumption

● Your installation

● Battery Storage

● Roof Parameters

Battery impact

📊 Sensitivity analysis

🔧 Explore other configurations

📊 Production & Performance

💰 Savings & Revenue

📈 Investment & Returns

Payback period (25 years)

Annual energy flow

Monthly profile

Monthly profile

Energy distribution

Typical summer day (June-July)

Typical winter day (Dec-Jan)

Battery comparison

Subsidies and incentives

System summary

📄 Solar Analysis Report