![]() This first approximation does not estimate the indirect costs of implementing the schemes or measure the positive and negative externalities that may arise from their implementation.Īll outputs from the SolarCity model can be downloaded by clicking on the ‘ Get report’ icon in the ‘ Results’ section. Note that the output metrics comprise the direct accounting cost of the subsidy or income tax credits to the municipal or central authorities and the prospective value created by these interventions. This assessment is based on a simplified model that assumes a solar programme aiming at full utilisation of all suitable rooftop spaces. The SolarCity simulator recalculates the outputs of the ‘Financing’ and ‘Environmental (and Social) Benefits’ sections of the ‘Output’ panel.įor instance, by inputting values for subsidies or income tax credits, the SolarCity simulator can assess the economic feasibility of rooftop solar PV systems. The annual consumption figure responds to user interaction via the consumption subsection of the tuner.Īlterable parameters, such as storage capacity, PV efficiency, system cost, interest rate, loan, loan period, emission factors, average consumption, tariffs, tax credits and subsidies can be adjusted as required. The non-alterable parameters – such as the PV capacity, surface area, number of buildings and annual consumption – are precalculated by the SolarCity simulator based on the user’s chosen configuration and area of interest. ![]() This window comprises two sets of parameters: non-alterable and alterable. The Set Input tab allows users to adjust some of the parameters of the analysis. ![]() The section is tied to a toolset (sliders, drawing tools on the map and a Set Input tab) that allows users to resize the system, amend the self-consumption ratio, and tune the fiscal and financial parameters as needed for individual cases. The project was funded by the American Samoa Economic Development Authority, the Environmental Protection Agency and the Department of Interior, whilst the microgrid is operated by the American Samoa Power Authority.The Setting section presents the capacity of solar PV panels that can be accommodated on a single (or multiple) rooftop(s) as well as the self-consumption of a single (or multiple) building(s). Having said that, this is an exciting way to show where the future of solar energy could take us if it was amplified on a larger scale. Obviously Ta’u island’s location off the West Coast means it is in a prime location to harness the Sun’s energy, which wouldn’t necessarily work in the UK. With concerns over climate change and the effects the heavy use of fossil fuels are having on the planet, more initiatives are taking off to prove the power of solar energy, whether it is SolarCity fueling an entire island or Bertrand Piccard’s Solar Impulse plane flying around the world on only solar energy. ![]() As well as providing energy, the project will allow the island to significantly save on energy costs and offset the use of more than 109,500 gallons of diesel per year. The battery system also allows the residents to use stored solar energy at night, meaning energy will always be available. The power from the new Ta’u microgrid provides energy independence for the nearly 600 residents of the island. ![]()
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