The first page of the proposal has a production number. PPL has a device on the inverter. Those are not the same sentence, and a Bethlehem Pennsylvania solar sales proposal that treats them as the same sentence is ahead of the tariff. The estimate is a model. It is not a promise that PPL will leave the inverter unconstrained.
Bethlehem customers on PPL Electric are under Rule 12, Distributed Energy Resource Interconnection Service, for inverter-based applications received on or after January 3, 2026. New applications in that group include a utility-owned DER management device. The proposal has to say so in plain language. It does not get to print a production total and hope the reader never asks who can manage the inverter.
A production estimate is not an operating promise
State the production figure as an estimate from the model, the equipment, and the site. Next to it, state that PPL owns, installs, and maintains a DER management device connected to the smart inverter data port. The device may use a meter-network radio. The customer is not buying that device from the installer as if it were a monitoring stick in the proposal price. It is PPL equipment. This post will not invent a price for it.
Do not add a curtailment percentage. Do not add a production-loss number. If PPL has not given you a study for this account, you do not have a figure, and a figure you type to look thorough is a fake. The honest line is shorter. The estimate assumes the model the designer ran. PPL can manage the inverter through a device the utility owns. The proposal does not know, and will not pretend to know, how that management will show up in kilowatt-hours on this roof.
What Rule 12 asks of the inverter
Inverters must comply with IEEE 1547-2018 and be certified to UL 1741 Supplement B, or be on PPL's current certification list. The proposal should name the inverter the installer will actually submit. That inverter has to meet that certification or be on that list. Naming one unit in the sales PDF and filing a different unit that was never checked against the list is how the application comes back.
If the inverter changes after the customer signs, the proposal and the application change together. The data port on the one-line has to be the data port on the unit being filed, because that is where PPL's device connects. A generic "smart inverter" note, with no model and no port, is not enough for the drawing that will be submitted. The PPL interconnection writeup is the utility context. The proposal should not invent a softer rule beside it.
One collar on the socket
PPL and the collar manufacturer do not support multiple meter collars on the same socket. A sales sketch that shows a solar collar beside the PPL device is a sketch to delete before the customer sees it. The drawing shows the socket with a single collar provision for the utility device. If the site already has a collar, the proposal and the one-line have to say so. Do not draw a second one and call it monitoring.
That limit is a drafting rule, not a slogan. The site plan does not need a cartoon of two collars "for clarity." One socket, one collar, the DER management device on the inverter data port, and a note that PPL owns the device. The installer does not install and maintain that device. PPL does. The sales proposal can say that in a sentence. The one-line has to show it.
Level 1 is a nameplate test
Chapter 75 Level 1 is for certified inverter facilities with nameplate 10 kW or less. A house may be Level 1. A larger rooftop is not. Do not label a bigger Bethlehem roof "Level 1" because the sales conversation started on a house template. The application level follows the nameplate. The Chapter 75 interconnection post is where those level lines are spelled out. This post will not invent the thresholds for the levels above Level 1.
The same restraint applies to the city. This post does not state a Bethlehem permit fee. The fee is whatever Bethlehem charges when the installer pulls the permit. Leave it off the production page. A blank you fill with a round number from another Pennsylvania town is not a courtesy. It is a wrong invoice.
What a Bethlehem Pennsylvania solar sales proposal should say
The pages that touch production and interconnection can stay short and still be accurate.
- The production number is an estimate. It is not a promise of unconstrained inverter operation.
- Inverter-based applications received on or after January 3, 2026 are under Rule 12, Distributed Energy Resource Interconnection Service.
- The inverter complies with IEEE 1547-2018 and UL 1741 Supplement B, or is on PPL's current certification list. Name the unit.
- PPL owns, installs, and maintains the DER management device on the smart inverter data port. It may use a meter-network radio.
- One meter collar. Multiple collars on the same socket are not supported.
- Level 1 only if the nameplate is a certified inverter facility at 10 kW or less. A larger rooftop is not Level 1.
A wider contents list for proposals in general is in what a solar sales proposal should include. Use that for the pages that are not PPL-specific. Do not let that general list talk you into a savings chart that assumes the inverter runs with no utility device. On this utility, the device is part of the application.
The Pennsylvania PUC approved a modified second DER management plan for PPL on November 20, 2025. That order removed the pilot cap of 3,000 devices and required a DER Orchestration Plan within 12 months. Do not put the retired pilot cap on a new proposal as if it were still the limit. This post does not say the orchestration plan was filed. This post does not say it was missed. That status is unknown here. The order required the plan. That is the sentence you have.
Draw it before the PDF goes to the customer
The salesperson can show production. The designer should not let the proposal PDF become a different project from the interconnection drawing. Equipment on the proposal is the equipment on the application. The one-line that will be submitted should already show the data port and the single collar note before anyone exports the customer PDF. If those notes are missing, the production page is early, not finished.
Athol prepares the proposal drawings and the design for installers in Pennsylvania. We do not install the array, and we do not speak for PPL. Pennsylvania solar design on a Bethlehem rooftop still has to survive the utility review that Rule 12 describes. Keep the estimate labeled as an estimate. Keep the device labeled as PPL's. Leave curtailment numbers off the page until someone who actually has them, from this account, puts them in writing.