The rates are additive, no values are overridden.

There are four variability options for EV charging in HOMER Grid, but it is not explained how those parameters are calculated or how they interact together. So, I would appreciate if you could an equation or explanation for each parameter.   The charge duration for each session is drawn from a modified normal distribution with the following parameters:  Mean (hr): "Mean time connected" input in hours  Standard deviation (hr): Charge duration variability (%) multiplied by the mean time connected  It is modified in that all draws more than one standard deviation from the mean are moved to be plus or minus 1 SD from the mean (whichever is closer to the initial draw). So you can be sure that the charge duration will always fall within the following range:  Max = (1+variability/100)*mean  Min = (1-variability/100)*mean

Article explaining the process on how to cancel a subscription.

The Renewable Fraction parameter on the Electrical tab is the one that matches the user manual definition. The Renewable Fraction parameter on the Storage tab is how much of the energy provided by the battery came from renewable sources, and it is only calculated when the ITC or MACRS incentives are present.

This dispatch uses PV to serve the load. The generator is committed if the PV generation is unable to meet the load requirement.

This dispatch uses the battery to serve the load. When the maximum discharge power of the battery decreases below the load requirement, the generator is committed to meet the load.

This dispatch serves the load using the generator which also serves the flywheel parasitic load.

This dispatch sets the battery to serve both the load and flywheel parasitic load. The generator is committed in case of shortage.

This dispatch follows the load following strategy of HOMER Pro.

This dispatch first uses the power produced by the PV, then starts the generator if the load or operating reserve requirement is not satisfied.

This dispatch sets the PV generation to serve the load if the available generation exceeds the requested load. Otherwise, grid supply is used to meet the shortage.

This is an example on how to model a custom component using the MATLAB Link.

This dispatch uses the battery to serve the load. When the maximum discharge power of the battery decreases below the load requirement, the generator is committed to meet the load.

The purpose of this space is to allow HOMER users to share and download custom dispatch strategies. HOMER Pro currently utalizes two dispatch strategies, Cycle Charging and Load Following. These strategies replicate how microgrids generally operate, however if a user has a need to control specifically how components are dispatched to serve a load, the need for a customized dispatch strategy arises. If engineered to fulfill a purpose, these customized dispatch strategies can greatly improve overall microgrid efficiency.

Determining operating reserve values for internal and external controllers

When the “Fixed Generator Capacity” function is enabled, users cannot modify the size of the generator. The generator 's output will still range from 0kW to its rated capacity, however users cannot edit the rated capacity. When the “Fixed Generator Capacity” function is disabled, users can modify the size of the generator using the Sizing table that appears on the component’s design page.

In HOMER, the converter component generally models any device that converts power from AC to DC (rectifying) and DC to AC (inverting). Some devices are bi-directional, meaning that it can convert power flowing in either direction, either AC to DC or vice versa. Some systems will use two separate devices: a rectifier for AC to DC conversion, and an inverter for DC to AC conversion. You can model these two separate devices as one system converter component, with a cost equal to the sum of both components. Many systems, however, contain just a rectifier, or just an inverter, and not both.