Renewable electricity at stadiums: what procurement figures really show
How to read renewable electricity shares without confusing procurement, on-site generation and lower overall energy demand.
Procurement is not avoided consumption
Ask three separate questions: how much electricity did the venue use, how much did it generate on site, and what share of purchased electricity carried a renewable attribute? GHG Protocol Scope 2 provides the accounting frame for purchased electricity. Judge efficiency by kWh avoided, solar by metered generation and renewable procurement by the share of purchased electricity matched to valid instruments.
Keep three electricity stories separate
First is how much electricity the venue uses. Second is how much it generates on site. Third is how purchased electricity is contractually matched with renewable generation. All three can matter, but they are not substitutes. A procurement percentage should never be presented as if it were an efficiency saving in kWh.
Preserve the market-based evidence
Where renewable procurement is reported, keep the contract period, instrument type and the electricity volume covered beside the claim. Then show the physical consumption trend separately. That makes it possible to see whether the venue is both buying differently and operating more efficiently.
Keep consumption and procurement separate
A venue can buy renewable electricity and still use more energy than it did the year before. Those are two different management questions. One concerns the source of electricity; the other concerns how efficiently the building, event schedule and equipment are being run.
Reporting both figures prevents a certificate purchase from masking avoidable consumption. It also gives engineers a reason to keep pursuing controls, maintenance and load reduction after the procurement target has been met.
Start the statement with the physical denominator: total purchased electricity for the reporting period. Then state what share is covered by the renewable procurement instrument and identify the period and market to which that instrument applies. On-site generation should be reported separately with its own metered output. This simple structure stops three different ideas from collapsing into one percentage.
Next, show whether consumption itself changed. If the venue buys renewable electricity but uses more kWh because event activity increased, that is a different story from an efficiency project that reduces load. Both may be legitimate sustainability actions, but operators need to see them separately to decide where the next investment belongs.
For multi-year reporting, keep the contractual and physical records aligned. Procurement products can change while the building does not. A clean audit trail lets readers follow the market-based claim without losing sight of the underlying electricity demand the venue still has to manage.
Report electricity consumed, on-site generation and contractually supported renewable procurement as separate numbers. That wording prevents a 100% procurement claim from being mistaken for zero electricity use or for all power being generated at the venue.
State the purchased electricity denominator, the procurement mechanism and the reporting period. Then show on-site generation and consumption trends separately. This avoids implying that renewable procurement eliminated physical electricity demand or that a contract reduced kWh. Clear language is not a downgrade of the claim; it makes the claim auditable and gives engineering teams a separate efficiency signal to manage.
There are three numbers worth keeping apart
Venue teams often compress electricity reporting into one phrase — “renewable power” — even though three separate questions are involved: how many kWh were consumed, how much generation occurred on site, and what contractual attributes were purchased for the remaining supply. Each number answers a different operational or accounting question.
The physical consumption trend belongs with venue energy intensity. A fall in kWh can be traced to controls, equipment or event mix; a renewable certificate changes the market-based emissions claim but does not make the meter spin more slowly.
Write the evidence trail before the marketing line
For purchased renewable electricity, keep the supplier contract, certificate type, geography, vintage and retirement evidence together. For on-site solar, retain generation meter data and state who owns the environmental attributes. If those attributes are sold, the venue should not also claim them.
Short-duration events add another layer: a venue can have a modest annual consumption but a sharp event peak. The peak-demand method helps engineering teams see whether high-load periods could be shifted, reduced or served differently.
The cleanest public wording separates efficiency from procurement: first explain what happened to consumption, then explain how the remaining electricity was sourced and accounted for. Readers can then distinguish an engineering achievement from a contractual one.