An array makes the most at midday, and most facilities draw the most after it has gone. We set the array against the load every 15 minutes for a year, move the loads that can move into the solar hours, size a battery from what is left, and read the panel again.
74 kW of load can run in the solar hours. Moved there, the noon export falls to 6 kW.
The meter records what leaves the facility and what comes in, every 15 minutes, and the inverter records what the roof made.
Kestrel Park Distribution, the specimen warehouse in the scrolled story, on a June weekday.
An array is sized for the roof. The facility's load follows its own day: a quieter middle, and a busier evening when chargers start, water heaters reheat and the cooling carries the afternoon heat.
So the same meter sends solar out at midday and buys power back after 4 pm, often at a higher rate than the export earns. Both show on the interval record, and neither shows on the bill as a circuit.
The work is done on the panel: find the loads that could run while the sun is up, move them there with fixed rules on a controller, and read the export and the evening import again.
Charging, water heating, pre-cooling and process runs that land after sunset and could land before it. Each one moved is solar used on site.
The array's output through the day and the year, from the inverter's own record, against the facility's load in the same 15 minutes.
The export that remains once the loads have moved. That figure, not the array's size, is what a battery is sized from.
The array's output set against the facility's own load every 15 minutes for a year: what is used on site, what goes out to the grid at midday, and when the facility buys back.
The loads that can move, moved into the solar hours by schedules and interlocks an engineer wrote and signed, and the export and the evening import read again.
The kWh and kW a battery would need, sized from the measured export and the measured evening import, and what it would do to the export and to the peak.
We read a year of your utility's 15-minute data, import and export, beside the inverter's own record.
We find the hours the array exports and the hours the facility buys back, and read each board for the loads that could move.
We write the schedules and interlocks that move those loads into the solar hours, and size a battery from what is left.
We read the export and the evening import again every month, and a licensed engineer signs the result.
Your utility's record every 15 minutes, with import and export on separate channels, so the hours the array sends power out are on the record.
What the array made in each interval, from the inverter or its portal. Set against the meter, it gives what the facility used of its own solar.
Where the two records cannot say which loads draw when, loggers go on the main boards for a month, so each load that could move is read at its circuit.
Loggers are fitted and collected by a licensed electrician with the panel live, and they come off at the end of the window. Nothing is fitted where the utility and the inverter records settle it.
Every 15 minutes for a year: the solar the facility used, the solar it exported, and the hours it bought back.
From 12 months of interval dataThe loads that can run in the solar hours, read at their circuits, and the kW each one moves.
Reviewed by an engineerThe export and the evening import measured again with the rules running, against the month before.
Every month the rules runThe work starts from 12 months of your utility's interval data and the inverter's own record. Where the two cannot settle it, loggers go on the main boards for a month.
The rules that move load into the solar hours run on a controller as schedules and interlocks an engineer wrote and signed. It is ours, run by us, and every action it takes can be traced to a rule.
