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18 August 2013

Solar Power Cost Calculator - SPCC

The Solar Power Cost Calculator (SPPC) is a web application intended to help investors assess the end cost of electricity generated by a solar system. Using a series of inputs that characterise the system it produces a final figure in €/kWh, the same units used by grid operators to charge households and consumers in general. With this result the investor is furnished with a direct comparison to the cost of tapping electricity from the grid. This application is conceived for Photo-Voltaics (PV) but can also be used for other technologies that have similar cost structures.

SPPC is open source, released under the EUPL v1.1 license; the code is publicly available at GitHub. This post is presently using SPCC v1.1.

The application is pre-set with generic values for demonstration. Use zero (0) to exclude non mandatory costs from the calculation (e.g. Financing, Storage). Click on an input descriptor to see further details on its function. The calculation implements the mathematical formulas laid out in The Price of Solar Power post.

To leave a suggestion or report a bug please use the comment box, or better still file an issue at GitHub.

1. System characteristics
Installed capacity
kWp
Expected generation
Wh/Wp/a
Efficiency decay
%/a
Expected lifetime
years
2. Investment costs
Panels
€/kWp
Inverter
€/kWp
Assembly and Installation
€/kWp
3. Maintenance
Inverter lifetime
years
Other costs
€/a
4. Financing
Percentage financed
%
Time
years
Interest
%/a
5. Storage
Cost
Lifetime
years
Effiency
%
Share of energy stored
%