What is Constellation Energy's backlog?

Constellation Energy reported $11.9B of remaining performance obligations at 30 Jun 2026, up 1,287% from a year earlier and down 1% from the previous quarter. That is 0.4 years of trailing revenue already under contract. Book-to-bill last quarter: 0.98.

Constellation Energy (CEG) backlog: remaining performance obligations

How much revenue Constellation Energy already has under contract, how fast it converts, and who it is with.

Data as of 7 Nov 2026.

Open the interactive Backlog view Constellation Energy competitor analysis

Constellation Energy reported $11.9B of remaining performance obligations at 30 Jun 2026, up 1,287% from a year earlier and down 1% from the previous quarter. That is 0.4 years of trailing revenue already under contract. Book-to-bill last quarter: 0.98.
Net new backlog added in the latest quarter: -$179M.
The company reports 9% of the backlog due within the first 6 months.
Twelve-month book-to-bill: 1.35, i.e. 1.35 of new orders for every 1 of revenue recognised.
Backlog growth minus revenue growth: +1261 points — orders are running ahead of revenue.
By backlog size it ranks 65th among US filers the cockpit tracks.

Constellation Energy backlog history

Remaining performance obligations at each quarter end (bars) against trailing twelve-month revenue (line).

Amounts in USD. Source: SEC XBRL filings.
Quarter end	Backlog (RPO)	TTM revenue	Coverage	Customer prepayments
30 Jun 2026	$11.9B	$31.3B	0.4 yrs	n/a
31 Mar 2026	$12.0B	$29.9B	0.4 yrs	n/a
31 Dec 2025	$1.05B	$25.5B	0.0 yrs	n/a
30 Sep 2025	$851M	$24.8B	0.0 yrs	n/a
30 Jun 2025	$855M	$24.8B	0.0 yrs	n/a
31 Mar 2025	$862M	$24.2B	0.0 yrs	n/a
31 Dec 2024	$915M	$23.6B	0.0 yrs	$33.0M
30 Sep 2024	$665M	$24.0B	0.0 yrs	$35.0M
30 Jun 2024	$329M	$23.5B	0.0 yrs	$35.0M
31 Mar 2024	$341M	$23.5B	0.0 yrs	$34.0M
31 Dec 2023	$364M	$24.9B	0.0 yrs	$40.0M
30 Sep 2023	$410M	$26.5B	0.0 yrs	$40.0M

Questions

What is Constellation Energy's backlog?: Constellation Energy reported $11.9B of remaining performance obligations at 30 Jun 2026, up 1,287% from a year earlier and down 1% from the previous quarter. That is 0.4 years of trailing revenue already under contract. Book-to-bill last quarter: 0.98.

About these numbers

Remaining performance obligations (RPO) are revenue a company has contracted but not yet recognised, as reported in its SEC filings (XBRL tag RevenueRemainingPerformanceObligation). Coverage = backlog ÷ trailing twelve-month revenue. Book-to-bill = (change in backlog + revenue) ÷ revenue. Conversion = revenue recognised ÷ the backlog at the start of each quarter, summed over four quarters. Counterparty values come from company filings and releases.