Does every will-serve letter guarantee capacity?
No universal commitment follows from the title. Confirm the particular document’s scope, whether capacity is reserved, and which conditions or later agreements control service.
Power diligence guide
Evaluate a will-serve or capacity letter by its actual site, MW, dates, conditions, and obligations. The title alone does not establish reserved capacity or a guaranteed energization date; obtain written clarification of what the issuer is committing to before relying on it at land closing.

First, send a marked-up checklist to the issuer and obtain written answers. Next, have the electrical adviser reconcile the letter with the development load and power plan. Finally, align the purchase agreement’s diligence and closing conditions with the evidence still outstanding; preserve the dated letter, response, and underlying documents in the decision record.
A preliminary feasibility response may be useful without being the final service agreement. Dominion’s published process offers preliminary site evaluation and a will-serve letter while also describing later infrastructure work. Avoid treating those distinct stages as interchangeable.
Pause reliance on a letter with no defined MW, no identifiable site, an unexplained date, missing attachments, undisclosed upgrade costs, or expired conditions. A seller’s summary should not replace the issuer’s document.
Read how to establish site capacity and timing and powered land versus substation proximity before assigning value to the claim.
No universal commitment follows from the title. Confirm the particular document’s scope, whether capacity is reserved, and which conditions or later agreements control service.
Distinguish utility demand from IT demand, initial from ultimate capacity, and any phased, conditional, or restricted service from the intended operating requirement.
Ask the issuer how long its assumptions and any reservation remain valid, what can change the response, and when written reconfirmation is required.
Do not assume so. Obtain the issuer’s written position on assignment, customer-entity changes, and whether a new request, approval, or agreement is required.
Yes. Reconcile it with engineering and the land transaction’s conditions while there is still an opportunity to resolve missing evidence or reconsider the commitment.