The Boundary Decision That Breaks Everything Downstream
Operational control, equity share, or financial control: which one you pick determines which facilities, vehicles, and leases even count as yours.
There's a decision that has to happen before you pull a single utility bill or fuel receipt: which organizational boundary approach you're using. It's the one most first-time filers either skip or apply inconsistently, and getting it wrong, or leaving it undecided, means every number you collect afterward is built on a foundation you'll have to redo.
Three approaches, one choice
The GHG Protocol gives you three ways to draw the line around your company: operational control, equity share, and financial control. Operational control means you include anything you have the authority to set operating policy for, regardless of ownership percentage. Equity share means you include a prorated portion of every entity based on your ownership stake, even a facility you don't run day to day. Financial control means you include anything you consolidate on your financial statements.
Most companies filing under SB253 use operational control. It's the most intuitive to apply, it lines up with how most companies already think about their operations, and it avoids the prorating math that equity share requires. Unless your finance team has a specific reason to align with financial control (usually because that's how they already report for other purposes), start with operational control and confirm it holds up.
Where it gets genuinely ambiguous
The clean cases are easy: a facility you own and run is yours under any approach. The ambiguity shows up at the edges.
A leased vehicle you operate day to day counts as yours under operational control, even though you don't hold the title. An employee's personal car, used occasionally for business travel, does not, even though you're reimbursing mileage. The distinction is authority over operations, not who's paying for what.
Joint ventures and franchises are the harder case. A joint venture you have majority control over is generally yours in full under operational control. A minority stake where you don't set operating policy generally isn't, even if you're a significant investor. Franchises depend heavily on the specific agreement: if you dictate operating procedures and energy use decisions, that's a different answer than a franchise that operates independently under your brand. There's no shortcut here. Each of these needs to be evaluated against the actual agreement, not against a general rule of thumb.
Apply it everywhere, or don't bother
The mistake that causes the most rework isn't picking the wrong approach. It's picking the right one and then applying it inconsistently, deciding facility by facility as you go instead of settling the approach once and applying it the same way everywhere. A boundary decided ad hoc, as each business unit happens to report in, isn't a boundary. It's a collection of individual judgment calls that won't survive anyone asking why one leased facility was included and a similar one wasn't.
Confirm the same approach is used across every business unit before you start collecting data. If your company has grown through acquisition, this is also the moment to check whether recently acquired entities have been formally brought inside the boundary or are just assumed to be included because nobody said otherwise.
Write the decision down, not just the data
The last article covered documenting methodology as you calculate each number. The boundary decision needs the same treatment, and it needs to happen first. Write down which approach you're using, why, and how it was applied to each ambiguous case: the leased vehicles, the joint ventures, the franchises. This isn't paperwork for its own sake. When a reviewer asks why a particular facility is or isn't in your inventory, "we decided in advance and applied it consistently" is a very different answer than reconstructing the logic after the fact.
Get the boundary right and the rest of the inventory has somewhere solid to stand. Get it wrong, or leave it undecided, and you'll be re-scoping facilities after the data collection is already done, which costs far more time than settling it up front would have.
We built a boundary classification toolkit for exactly this: a decision guide plus a template for working through subsidiaries, leases, joint ventures, and franchises one by one. It's a small companion to this article for anyone who wants to work through the ambiguous cases on paper before they show up in a reviewer's questions.