Quickly and easily calculate the financial viability of your solar asset

With our Solar Calculator, you can assess the profitability of solar projects reliably, transparently and intuitively – whether you are a private investor, project developer or intermediary.

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What is the Solar Calculator?

The Solar Calculator is a web-based software solution for the financial modelling of PV systems. It has been specifically developed for solar projects of all sizes, from small rooftop systems to large-scale solar plants – with a clear focus on user-friendliness, reliability and transparency.

Unlike technical planning tools or complex Excel spreadsheets, the Solar Calculator provides a comprehensive financial analysis: revenues, costs, financing, tax effects, cash flows, and return metrics across the entire lifetime of the asset.

Key features at a glance

Simple input of project data

System size, specific yield, investment costs, financing, and taxes – all individually configurable.

Comprehensive financial modelling

30+ years of revenue and cost forecasts, cash flow calculations, IRR, ROI, and payback period.

Scenario and sensitivity analysis

Compare different market prices, support schemes, or financing models.

Templates for standard system types and benchmarks

Templates and benchmarks for different system types and parameters – Rooftop Residential, Commercial & Industrial (C&I), and Utility-Scale.

Report generation for banks and investors

Export standardised PDF reports with all key metrics.

Who is the Solar Calculator for?

Private investors –
to assess projects and return potential
Project developers –
for pricing and the preparation of sales documentation
Brokers and advisers –
for use in client consultations
Financial institutions –
to evaluate business cases for financing
Installers and municipal utilities –
for rapid financial viability analysis

Solar Calculator is available in 3 versions

	Free	Standard	Pro
Save and manage projects	3	Unlimited	Unlimited
Full financial viability calculation (revenues, costs, financing, etc.)	✓	✓	✓
Comprehensive financial metrics (ROI, IRR, payback period, etc.)	✓	✓	✓
Professional presentation view for client meetings (charts, etc.)		✓	✓
Export as PDF report (bank-ready, for investors)		✓	✓
CSV & Excel export for individual analyses		✓	✓
Scenario analysis (e.g. electricity price, inflation, financing)			✓
Portfolio management (organising projects across different portfolios)			✓
Time resolution of calculations (e.g. cash flows)	Annual	Annual	Annual and monthly
Templates for system types (C&I, ground-mounted, rooftop systems)	Sample template	Extensive library	Extensive library
Support	–	Standard	Premium
Access to training sessions and webinars		✓	✓
Team access / multi-user support	–	–	On request
Custom branding options (white label)	–	–	On request

Interested?

Try the Solar Calculator Free now or learn more about the Standard and Professional versions.

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