7122 Net Metering Control

In the net metering scenario, the electrical meter runs backwards if excess electricity is produced on site. If the meter reaches zero, buyback rates apply. As with the buyback priority control, the incremental sum of all fuel uses is calculated to get the total cost for the hour:

Total Cost = A$kWhGRID + A$BtuGRID - A$kWhBUYBACK

The A$ terms are the incremental costs as discussed with buyback priority control. Consequently, the control algorithm is the same as in buyback priority with the exception that the A$kWhGRID term here refers to the adjusted (i.e., rolled back) meter usage, and the A$kWhBUYBACK amount is decreased by the kWh that go into reducing A$kWhGRID.

If the monthly sum is positive (i.e., more electricity has been used from the grid than produced on site), then the monthly bill is based on simple aggregation of hourly consumption plus demand and fees. Otherwise, the customer is refunded the value of excess electricity produced as dictated by the buyback rate.

Solar Stirling Engine Basics Explained

Solar Stirling Engine Basics Explained

The solar Stirling engine is progressively becoming a viable alternative to solar panels for its higher efficiency. Stirling engines might be the best way to harvest the power provided by the sun. This is an easy-to-understand explanation of how Stirling engines work, the different types, and why they are more efficient than steam engines.

Get My Free Ebook

Post a comment