Solar planning tools

Solar versus fuel generator cost calculator

Compare the same daily energy and use one currency throughout. Prices stay fixed; financing, replacements and equal backup reliability are not modelled.

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Live calculation
Generator total cost
4,388,000 currency units
Solar total cost
950,000 currency units
Net savings
3,438,000 currency units
Planning estimates, not equipment approval. Review the assumptions below before choosing a system.

No location or tariff is detected automatically. All results use the values you enter.

What is this tool used for?

Compare the same daily energy and use one currency throughout. Prices stay fixed; financing, replacements and equal backup reliability are not modelled.

How this is calculated

Cɢ = C₀ɢ + n × (365 × E × f × c + Mɢ); Cₛ = C₀ₛ + n × Mₛ; C₀ɢ = Generator purchase cost; n = Analysis period · years; E = Daily energy demand · kWh; f = Fuel use · L/kWh; c = Fuel price per litre; Mɢ = Annual maintenance cost; C₀ₛ = Net upfront system cost · currency units; Mₛ = Annual solar maintenance

Understand the modelling approach →

Before you use the result

Compare the same daily energy and use one currency throughout. Prices stay fixed; financing, replacements and equal backup reliability are not modelled.

Tool guide

Compare the same daily energy and use one currency throughout. Prices stay fixed; financing, replacements and equal backup reliability are not modelled.

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