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LF Energy

LF Energy is the Linux Foundation's foundation for open-source energy software, standards and data. It hosts projects such as EVerest and CitrineOS (EV charging and OCPP), OpenLEADR (OpenADR), CoMPAS (IEC 61850 tooling) and SEAPATH (digital substations), with special interest groups that anyone can join.

Cheapest way in: Free: Contributor, no membership · paid from $5,000 (General)
Standards: OCPP, OpenADR, IEC 61850 / MMS
Verified: 23 Oct 2026

Official website: lfenergy.org ↗Join LF Energy ↗

OT Fabric is not affiliated with LF Energy. This profile is independent and based on the organization's own published pages, linked next to each fact. LF Energy is the authority on its terms and fees.

What LF Energy does

Hosts open sourceEVerest and CitrineOS (OCPP)
Hosts open sourceOpenLEADR (OpenADR 2.0b and 3.x)
Hosts open sourceCoMPAS and SEAPATH (IEC 61850, digital substations)

Taking part

Each question is separate, because "open" and "free" mean different things here. A yes always means open or free to someone who is not a member.

Can anyone read the specifications for free?: Not applicableLF Energy does not publish the protocols in this directory.
Can anyone take part in the community?: Yes"You can use every project, contribute to any of them, and never pay a cent." lfenergy.org
Can an individual take part for free?: YesContributing to projects and joining SIGs needs no membership. tac.lfenergy.org
Can an organization join for free?: PartlyAssociate membership is free for eligible open-source projects, non-profits, academic institutions and government research bodies, subject to Governing Board approval. lfenergy.org
Are technical working groups open to non-members?: Yes"SIGs are open for anyone to participate in." tac.lfenergy.org
Can non-members take part in interoperability testing?: Not applicableLF Energy does not run protocol test events.
Can a non-member certify a product?: Not applicableLF Energy does not certify products.
Does it maintain or host open-source implementations?: YesHosts 39 projects, including EVerest, CitrineOS, openLEADR, CoMPAS and SEAPATH. lfenergy.org

Membership tiers and published fees

Published examples as listed on the organization's pages on 23 Oct 2026. Where a page does not say whether a fee recurs, we do not guess.

Tier	Published fee	Who can join	Votes	Working groups	Source
Contributor, no membership	Free	Anyone: use and contribute to every project, and join SIGs.	Unknown	Yes	lfenergy.org
Associate	Free	Open-source projects, non-profits, academic institutions and government research bodies, with Governing Board approval.	Unknown	Yes	lfenergy.org
General	$5,000 to $70,000	By employee count: $10,000 (up to 99) to $70,000 (5,000+) for organizations not yet in the Linux Foundation; $5,000 to $50,000 for current LF members.Eligible to stand for the Governing Board.	Partly	Yes	lfenergy.org
Strategic	$150,000 to $170,000	$170,000, or $150,000 for current Linux Foundation members.Seats on the Governing Board, the Technical Advisory Council and the LFESS Steering Committee.	Yes	Yes	lfenergy.org

Open-source implementations

EVerestC++ · Apache-2.0 · on the ecosystem map
libocpp (EVerest)C++ · Apache-2.0 · on the ecosystem map
CitrineOSTypeScript · Apache-2.0 · on the ecosystem map
OpenLEADR (Python)Python · Apache-2.0 · on the ecosystem map
OpenLEADR (Rust)Rust · MIT OR Apache-2.0 · on the ecosystem map

OT Fabric's notes

What stands out

LF Energy is mostly the opposite of a protocol standards body: its projects are software, and everything it hosts is free to use and contribute to. The SIGs, including Edge Interoperability and Flexibility, are open to anyone.

Several projects on our ecosystem map live here: EVerest and CitrineOS for OCPP, and OpenLEADR for OpenADR. They are independent of the organizations that publish those protocols, which is exactly why this directory separates standards publishers from open-source foundations.

Paid membership buys governance, not access. General membership starts at $10,000 (or $5,000 for existing Linux Foundation members) and makes a company eligible for the Governing Board; Associate membership is free for open-source projects, non-profits and research bodies, with board approval.