What is Eos Energy Enterprises's backlog?

Eos Energy Enterprises reported $27.3M of remaining performance obligations at 30 Sep 2026, down 65% from a year earlier and down 20% from the previous quarter. That is 0.1 years of trailing revenue already under contract. Book-to-bill last quarter: 0.92.

How fast does Eos Energy Enterprises's backlog turn into revenue?

Over the last twelve months Eos Energy Enterprises recognised revenue equal to about 345% of the backlog it started each quarter with.

Eos Energy Enterprises (EOSE) backlog: remaining performance obligations

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

Data as of 7 Nov 2026.

Open the interactive Backlog view Eos Energy Enterprises competitor analysis

Eos Energy Enterprises reported $27.3M of remaining performance obligations at 30 Sep 2026, down 65% from a year earlier and down 20% from the previous quarter. That is 0.1 years of trailing revenue already under contract. Book-to-bill last quarter: 0.92.
Net new backlog added in the latest quarter: -$6.70M.
Over the last twelve months it turned about 345% of its opening backlog into revenue (12-month conversion).
81% of the backlog is due within the next twelve months.
Customer prepayments (contract liabilities) cover 76.9% of the backlog.
Twelve-month book-to-bill: 0.81, i.e. 0.81 of new orders for every 1 of revenue recognised.
Backlog growth minus revenue growth: -384 points — revenue is catching up with orders.
By backlog size it ranks 494th among US filers the cockpit tracks.

Eos Energy Enterprises 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 Sep 2026	$27.3M	$266M	0.1 yrs	$21.0M
30 Jun 2026	$34.0M	$214M	0.2 yrs	$9.90M
31 Mar 2026	$31.0M	$161M	0.2 yrs	$9.00M
31 Dec 2025	$45.8M	$114M	0.4 yrs	$17.5M
30 Sep 2025	$77.2M	$63.5M	1.2 yrs	$19.2M
30 Jun 2025	$105M	$33.8M	3.1 yrs	$39.5M
31 Mar 2025	$112M	$19.5M	5.8 yrs	$43.4M
31 Dec 2024	$97.2M	$15.6M	6.2 yrs	$26.3M
30 Sep 2024	$30.1M	$15.0M	2.0 yrs	$12.0M

Questions

What is Eos Energy Enterprises's backlog?: Eos Energy Enterprises reported $27.3M of remaining performance obligations at 30 Sep 2026, down 65% from a year earlier and down 20% from the previous quarter. That is 0.1 years of trailing revenue already under contract. Book-to-bill last quarter: 0.92.
How fast does Eos Energy Enterprises's backlog turn into revenue?: Over the last twelve months Eos Energy Enterprises recognised revenue equal to about 345% of the backlog it started each quarter with.

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.