An Eversource Massachusetts screen failure letter is a design instruction. Docket D.P.U. 25-48, adopted September 15, 2026, requires the utility to provide, in writing, the specific screen or screens the application failed, including information and detail about the specific system threshold or limitation that caused the failure. The customer may revise the project design to remedy the failure and resubmit without losing queue position. IREC described the order on October 9, 2026. Design from the order. If the package argues the screen and leaves the export and the power-control schedule untouched, the resubmittal does not remedy the failure, and the queue-saving step is wasted.
D.P.U. 19-55 was the earlier storage investigation. The Interconnection Implementation Review Group carried the screen work into 25-48. The September 15 order is what tells a designer what the letter must contain and what the resubmittal is allowed to do. A description of the order is not a second threshold.
Read the named screen before you redraw
Start with the letter, not with a guess about which screen failed. Copy three things into the job notes: the screen or screens named, the threshold or limitation in the units the letter uses, and the application number. The remedy has to address that limitation. Changing an unrelated kilowatt figure, or writing a paragraph about why the screen should not apply, does not answer the letter.
The revised rules clarify energy storage and export-limited systems, and they treat a power control system as an acceptable export-control method. Definitions that have to be readable on the one-line are import capacity, export capacity, inadvertent export, limited export, and power control system. There is a higher eligibility threshold for the Simplified process. Do not type a kilowatt cutoff from an older job. Read the current Massachusetts simplified interconnection rule. This letter does not give you a number to guess.
What an Eversource Massachusetts screen failure changes on the drawings
Cut export to pass the screen, or change the power-control schedule that holds export, and then make four surfaces tell the same story. Athol Energy prepares the interconnection drawings and the permit set for that revision. The work is the matched set, not a cover letter that debates the screen.
One-line
Set export capacity so it no longer exceeds the threshold the letter states. If the inverters stay, nameplate stays, and both numbers appear. If the remedy is fewer inverters, nameplate and the inverter count change with the export. When a power control system is what holds the limit, note the power control system on the one-line. When export capacity sits below the equipment rating, label limited export. If the application has an import capacity, leave it as its own number. Do not paste the new export into the import field.
Do not add a response time or any seconds figure for inadvertent export. If the application already speaks to inadvertent export, keep that label consistent with the form. Do not replace it with the words "zero export" unless the application says the project does not export.
Site plan
If only the setpoint changed, the array outline and the equipment pad stay. Any schedule or note on the site plan that states export, inverter quantity, or storage equipment has to match the new one-line. The point of interconnection stays where it was unless the limitation in the letter is the location itself. Do not drop a battery onto the plan to "help the screen" if the application has no storage. Adding equipment is a real redesign: it has to show on the one-line, the site plan, and the form together, or it is a fiction.
Application form
Resubmit on the same application so the queue position stays with that request. Change the fields that state export capacity, limited export, and the power control system. Change nameplate only if the equipment changed. Address, account or meter identifiers, and the point of interconnection stay put unless the letter's limitation is that location. A second, new application "to start clean" is a different request. It is not the resubmittal the order describes.
Building permit set
This is where the job drifts. The utility will study the resubmittal. The building department will review the sheets it already has. If those still show the old export or the old inverter count, the town is approving a different project from the one Eversource has in queue.
Revise every permit sheet that states the value you changed. Leave sheets that do not state it. Put the old number and the new number in the revision note so the next person can see the delta without opening both PDFs. If those sheets already carry a stamp, PE stamping belongs on the revised set, so the stamped pages are the pages with the export you are actually filing. Permit design and the Eversource form have to move in the same revision, on the same day you stop editing.
What has to stay identical
Write a fixed list next to the change list. Application number. Site address. Point of interconnection, unless the letter names that location as the limitation. Nameplate, unless equipment changed. Module layout, unless you actually removed modules. Any sheet that does not state kilowatts, export, or equipment counts. The fixed list is how the building set and the queue identity survive the redraw. A designer who "updates everything to be safe" creates new mismatches in fields the screen never complained about.
Check the sales set before it goes out again. If the proposal still shows the pre-letter export, the customer will approve a third number. The number that matters for the queue is the export on the resubmittal. The number that matters for construction is the export on the permit set. Those two have to be the same number. The proposal has to be brought along or marked stale.
East and West are not one letter
Eversource East and Eversource West are separate. August 2026 interconnection data for both was posted on September 22, 2026. You do not have the workbook counts, so do not say which territory is busier, and do not borrow a threshold from the other company's file. Read the company name on the letter in front of you. A West limitation copied onto an East one-line is a new error, not a template.
Eversource interconnection work already splits the two territories for a reason. Keep the screen letter in the folder for the territory that wrote it. When you answer, the one-line, the site plan, and the application form for that application number all show the new export, and the sheets that were supposed to stay identical still do.
A workshop date does not name your screen
Eversource East's simplified workshop was September 9, 2026. An Eversource East expedited and standard workshop is listed for December 9, 2026. National Grid's DER open house is October 20, 2026. Those are calendar marks. None of them states the screen on your letter, and none of them is a reason to wait on a redraw that the September 15 order already allows.
The Simplified path now has a higher eligibility threshold. Read the current process for the territory on the application, and do not type a kilowatt cutoff from memory. Then change the export or the power-control schedule to meet the threshold the letter printed, keep the queue on the same application, and make the permit set match. Massachusetts solar design support is the drawing work. The letter already told you which number failed.