There are savings for every month in which the panels produced electricity. The more we produced, the more we saved.
To see those savings, specify a series of months and click the "Graph It" button.
If you move your mouse cursor over one of the column segments, you will see the numeric value of the segment.
The Total Savings each month is the height of each column on the above chart. It is the sum of one to three of the following pieces:
- Supply Savings: What we would have been charged for the electricity we used if we had not produced it ourselves. (See the blue segments in the graph.)
- Delivery Savings: What we would have been charged for delivering that electricity to us. (See the red segments in the graph.)
- Net Meter Credit: What we get if we produced more electricity than we consumed during a month. It can be used in future months where we produce less electricity than we use, which happens frequently for November through February. (See the green segments in the graph, if they exist.)
Note that a National Grid month is the period for which we receive a bill, typically from the second week of a calendar month through the first week of the next calendar month.
------
The table below shows data for the months you specified. An entry of "n/a" means the information is not available.
You can see more data than what is graphed by left clicking on the three vertical dots on the far left of the table headings and choosing "Columns" and then "Show All Columns." You can hide or show a column by clicking on its checkbox in that submenu.
If you cannot read the column headings, that is, they are horizontal dots rather than words, hover your mouse cursor over the dots and a popup of the column heading will appear.
Help for Tables
The maximum number of columns in the table are "Date" for the National Grid month, "Production" for the amount of electricity that the solar panels produced that month, "Total Usage" for what we were billed for that month, "CH Usage" for the CH usage broken out, "EV Usage" for the Electric Vehicle usage broken out, "Bill," which is what National Grid charged us (negative means that we got a credit with them), and "Total Savings," which is the sum of the next three columns (Delivery, Supply, and Net Meter) plus a little extra that shows up on our bills. Finally, "REC Revenue" for the money we receive every three months for selling Renewable Energy Certificates (REC's). The CH earns one for every 1 mega Watt hour of electricity that the solar panels produce.
You can sort on individual columns by clicking on the arrowheads at the top of the columns.
If you cannot see all the data in the table, you can drag the vertical and/or horizontal scroll bars. You can also click and hold your mouse on the bottom line of the table and drag it down or up.
You can widen or narrow a column by moving your mouse cursor over the vertical bar to the right of the column heading, holding down the left mouse button, and dragging the right side of the column to the right or left.
You can move a column by holding down your left mouse button while the cursor is over the column's header and dragging the column to the left or right.
You can have your table columns layout be remembered for the rest of your session by clicking on the three vertical dots on the far left of the table headers and choosing "Persistence" and then "Remember Layouts". Then change the visibility, position, and/or widths of the columns. Then choose "Persistence" and then "Remember My Layout". Subsequent clicking on "Remember My Layout" saves whatever the layout is at that time. You can revert to the initial column layout by clicking on "Reset to Default Layout". You can turn off the remembering by clicking on "Do Not Remember Layouts".
To move a row: left click and hold your mouse cursor on a row and drag it up or down.
You can export the table as a CSV file by clicking on the three vertical dots on the far left of the table headers and choosing "Export data (CSV)".