Implementation and functionality of most new technology now depends on software. Software for renewable energy technology, often referred to as 'CleanTech', is no exception to this rule. For example, a consumer considering participation in a feed-in tariff (FiT) scheme will want to know if their property is in fact suitable for solar generation before committing time and money. Consumer software products have been developed to simulate location-specific suitability. One application, for example, allows users to locate their home on Google Maps, insert symbols representing the envisaged location of the panels and additional data such as the pitch of their roof and suspected sources of shadows, following which the software estimates the generation of solar electricity.