ENERGY STAR Top-Load Clothes Washer Naturally Occurring Baseline Review

The Northwest Energy Efficiency Alliance (NEEA) contracted with Apex Analytics to conduct a review of NEEA’s naturally occurring baseline forecast assumptions for ENERGY STAR® top-load clothes washers. Specifically, Apex Analytics reviewed NEEA’s assumption that the baseline will decline from 2020 to 2021 and begin increasing in 2023.

In January through May 2021, Apex Analytics conducted qualitative and quantitative analyses to review NEEA’s naturally occurring baseline trends. The review determined that it is reasonable for NEEA to assume a declining baseline for top-load clothes washers from 2020 to 2021 and, further, that it is reasonable to assume that baseline adoption will begin increasing in 2023.

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