PVWatts Calculator
Estimates the energy production and cost of energy of grid-connected photovoltaic (PV) energy systems throughout the world. It allows homeowners, small building owners, installers and
Calculating the 'avoided cost' or 'value of solar' requires calculating how much energy (kWh) gets exported to the grid. On the 'Edit Proposal' screen, users can reference how much energy is exported in % terms inside the 'Meters' section.
Note: Energy Toolbase can only accurately calculate exported energy if a user references an 'Energy Use Profile' that has interval meter data. If you reference an 'Energy Use Profile' using monthly summary data, we simply assume that inputted kWh energy usage is evenly distributed throughout all intervals in a billing cycle.
Energy storage systems can be configured to manage export. When used to limit or shape export, storage allows developers to increase nameplate capacity or decrease exports without triggering additional grid impacts. Export-limited systems may qualify for simplified interconnection.
Overstating export values can result in unnecessary upgrade costs or delays. Energy storage systems can be configured to manage export. When used to limit or shape export, storage allows developers to increase nameplate capacity or decrease exports without triggering additional grid impacts.
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