The US Energy Information Administration (EIA) publishes the deciding data in its Monthly Energy Review, Table 1.11 (heating degree days by census division) and Table 1.12 (cooling degree days by census division). The deciding value is the sum of the monthly population-weighted heating degree days for U.S. over the winter season of 2028, where winter runs from November of 2028 through March and summer runs from May through September. The outcome is Yes if that total exceeds the value specified in the market question and No otherwise. The value becomes final when EIA releases the Monthly Energy Review with data for the full season, at about 10:00 AM CT and roughly three months after the season ends, and early resolution does not apply. If EIA delays the release, resolution waits until it is published.

The US Energy Information Administration (EIA) publishes the deciding data in its Monthly Energy Review, Table 1.11 (heating degree days by census division) and Table 1.12 (cooling degree days by census division). The deciding value is the sum of the monthly population-weighted heating degree days for U.S. over the winter season of 2028, where winter runs from November of 2028 through March and summer runs from May through September. The outcome is Yes if that total exceeds the value specified in the market question and No otherwise. The value becomes final when EIA releases the Monthly Energy Review with data for the full season, at about 10:00 AM CT and roughly three months after the season ends, and early resolution does not apply. If EIA delays the release, resolution waits until it is published.