What is Clean Energy Fuels's backlog?

Clean Energy Fuels reported $71.4M of remaining performance obligations at 30 Sep 2026, up 19% from a year earlier and up 114% from the previous quarter. That is 0.2 years of trailing revenue already under contract. Book-to-bill last quarter: 1.34.

Clean Energy Fuels (CLNE) backlog: remaining performance obligations

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

Data as of 7 Nov 2026.

Open the interactive Backlog view Clean Energy Fuels competitor analysis

Clean Energy Fuels reported $71.4M of remaining performance obligations at 30 Sep 2026, up 19% from a year earlier and up 114% from the previous quarter. That is 0.2 years of trailing revenue already under contract. Book-to-bill last quarter: 1.34.
Net new backlog added in the latest quarter: $38.0M.
Customer prepayments (contract liabilities) cover 17.9% of the backlog.
Twelve-month book-to-bill: 1.02, i.e. 1.02 of new orders for every 1 of revenue recognised.
Backlog growth minus revenue growth: +13 points — orders are running ahead of revenue.
By backlog size it ranks 451st among US filers the cockpit tracks.

Clean Energy Fuels 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	$71.4M	$448M	0.2 yrs	$12.8M
30 Jun 2026	$33.4M	$442M	0.1 yrs	$8.60M
31 Mar 2026	$46.3M	$439M	0.1 yrs	$14.7M
31 Dec 2025	$50.6M	$425M	0.1 yrs	$17.6M
30 Sep 2025	$60.0M	$422M	0.1 yrs	$10.4M
30 Jun 2025	$54.0M	$421M	0.1 yrs	$8.90M
31 Mar 2025	$46.6M	$416M	0.1 yrs	$7.90M
31 Dec 2024	$46.4M	$416M	0.1 yrs	$6.90M
30 Sep 2024	$33.8M	$413M	0.1 yrs	$5.90M
30 Jun 2024	$39.7M	$404M	0.1 yrs	$7.90M
31 Mar 2024	$24.3M	$397M	0.1 yrs	$7.90M
31 Dec 2023	$24.5M	$425M	0.1 yrs	$5.10M

Questions

What is Clean Energy Fuels's backlog?: Clean Energy Fuels reported $71.4M of remaining performance obligations at 30 Sep 2026, up 19% from a year earlier and up 114% from the previous quarter. That is 0.2 years of trailing revenue already under contract. Book-to-bill last quarter: 1.34.

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.