About PV-Energie-Planer

Photovoltaic planning, clear and independent.

PV-Energie-Planer supports households and businesses with well-founded planning, simulation, and profitability assessment of photovoltaic systems.

Why PV-Energie-Planer was developed

Many decisions about photovoltaics are based on rough estimates, unclear assumptions, or hard-to-understand quotes. PV-Energie-Planer was developed to make planning and evaluation more transparent, data-driven, and comprehensible — so you can make informed decisions.

Our principles

What we stand for

No sales advice. No hidden interests. Just neutral, transparent planning.

Independent

No sales advice — neutral planning without manufacturer ties.

Data-driven

Real weather and consumption data instead of rough estimates and flat rates.

Practical

Results for real decisions — whether for bank meetings, quotes, or self-planning.

Transparent

Traceable assumptions and clean results. No black box.

Features

What you get

Professional tools that are usually only available to specialist planners.

Yield simulation

Hourly calculation across 8,760 hours using DWD weather data for your location.

Profitability analysis

25-year cash flow with electricity price increases, degradation, financing, and break-even.

3D roof planner

Place modules on your virtual roof. All roof shapes, dormers, chimneys.

Battery storage

Realistic simulation with charge/discharge losses and comparison with/without storage.

Configuration comparison

Compare different configurations, consumption profiles, and storage sizes directly.

Heat pump calculator

Heizlast berechnen, Stromverbrauch ermitteln und Kostenvergleich Gas vs. Wärmepumpe — direkt mit PV-Anlage kombinieren.

Who the platform is for

PV-Energie-Planer is for anyone who wants to evaluate and prepare photovoltaic projects on a solid basis.

Homeowners Commercial businesses Solarteure & PV-Installateure Energy consultants Planning offices

How the simulation works

PV-Energie-Planer goes far beyond simple kWp-based estimates. The core calculation simulates every single hour of a year, taking into account:

Global irradiance by location — DWD measurements in 10-minute intervals (2016–2019)
Roof tilt and orientation — Yield matrix for all 8 compass directions, 0°–90°
Performance Ratio (82%) — System losses from inverter, cables, and temperature
Consumption profiles — Standard, home office, family, shift work
Battery storage — 93% efficiency, 2.5% self-discharge/month, 1C charge rate
Degradation — 0.5% performance reduction per year over 25 years
Profitability — Electricity price increases, feed-in tariff, financing, operating costs
Heat pump calculator — Heizlast nach Gebäudetyp, JAZ-Berechnung, monatliche Verbrauchsverteilung und Kostenvergleich Gas vs. Wärmepumpe — direkt mit der PV-Simulation kombinierbar

FAQ

Frequently asked questions

Answers to the most important questions about the platform.

What is PV-Energie-Planer?

An online tool for professional photovoltaic system planning. Calculates yield, self-consumption, autarky, and profitability over 25 years — including battery storage and 3D roof planner.

How accurate is the yield calculation?

The simulation runs over 8,760 hours per year with real DWD measurement data. Accuracy is typically above 95% compared to actual yields.

Which roof orientations are supported?

All 8 compass directions with individual tilt angles from 0° to 90°. Multiple roof surfaces can be combined.

Is battery storage taken into account?

Yes, with realistic charge and discharge losses, battery degradation, and direct comparison with and without storage.

Can I export my analysis as a PDF?

Yes — with all values, charts, and the 25-year forecast. Ideal for bank meetings or quotes.