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Platform · Choice Engine® & Enervee Score®

The Enervee Score rates every model. The Choice Engine ranks every choice.

The Enervee Score is a 0–100 rating of a product's energy efficiency relative to every other model on sale in its category, recalculated as the market changes. The Choice Engine uses it to rank and present the efficient option first. In all four studies, showing the Score raised the efficiency of what people chose; the effect was strongest among lower-income shoppers.

Talk to our team How it's calculated
40+
product categories, recalculated daily
0–100
normalized — a 90 means the same on every category
94
Ideal Enervee Score 90–100

The top 10% of models in the category on the market today.

One system

Every model rated against its category, then ranked for the shopper.

The Enervee Score® rates a product against every other model in its category, recalculated daily across more than 40 categories. The Choice Engine® then orders the results by Score, price and available incentives — so the efficient option appears first.

  • Rated 0–100

    Every model in a category scored against every other, normalized so a 90 means the same on a refrigerator as on a television.

  • Ranked in context

    The Choice Engine® weighs efficiency, price and available incentives together, and lists the best option for the shopper first.

  • Choices shift

    People choose more efficient products when the Score is present — measured in peer-reviewed trials, with the largest effect among low-income shoppers.

Methodology

Calculating the Enervee Score.

The higher the Enervee Score, the more efficient that product is, relative to all other relevant products in its category. Normalized across categories, the Enervee Score lets shoppers see at once how efficient any model is. It is recalculated daily for every product category.

Every product gets its own Enervee Score on the full 0–100 scale. All but the best 10% of products score between 0 and 90, with specific bands for easy recognition. The top 10% of products in each category score 90–100, the Ideal band.

Score distribution · Refrigerators 1,886 models · cu ft per kWh/yr
Refrigerators 91

Ideal (90–100) is always the top 10% of the category. Bars follow the live category distributions on choose.enervee.com, September 2026.

By category

Enervee Score methodology for each product category.

Enervee uses the accepted test standards for performance and efficiency ratings in each territory where it is used. For categories that are not regulated by standards — video game consoles, for instance — Enervee develops the methodology itself, on the same patented approach behind every Score.

Peer-reviewed

Showing the Score changes what people choose.

In three randomized controlled trials of 200 respondents each, showing the Enervee Score raised the average Score of the product chosen by four to five points (85.5 to 89.5 in the first), with the largest effect among low-income shoppers.

Read the paper in Energy Efficiency (open access) →
Score not shown
85.5
Score shown
89.5

Average Enervee Score of the product chosen · 3 RCTs · n=200 each

FAQ

What program teams ask about the Enervee Score.

More questions program teams ask →

What is the Enervee Score and how is it calculated?

A 0–100 rating of a product's energy efficiency relative to every other product in its category. It is normalized across categories, so a 90 means the same thing on a refrigerator as on a television, and it is recalculated daily for thousands of models across more than 40 categories.

What does an Enervee Score of 80 mean?

That the model sits in the High band (75–90) for its category, measured against every model on sale today. The scale is relative to the current market, so a Score can move as new models arrive. Bands: 0–50 Low, 50–75 Medium, 75–90 High, 90–100 Ideal.

How does the Score turn into dollars for the shopper?

Through CLEARCOST, the total cost of buying and running a product over its life, and YOUSAVE, the energy cost avoided against a similar, less efficient model. Both sit next to the Score on every eligible product.

How CLEARCOST and YOUSAVE are calculated

What is the difference between the Choice Engine and the Enervee Score?

The Enervee Score rates one product's energy efficiency 0–100. The Choice Engine is the system that puts it to work: it ranks every model in a category by Score, price and available incentives, so the most relevant efficient option surfaces first instead of the customer having to sort for it. The Score is the rating; the Choice Engine acts on it. It ranks every model in a category by Score, price and available incentives, so the most relevant efficient option comes first.

Why not just use ENERGY STAR?

ENERGY STAR is a pass/fail label against a fixed threshold: a product either meets it or it does not, and among the models that qualify there is no way to tell a modest performer from an excellent one. The Enervee Score® ranks every model on sale, labeled or not, 0–100 against the whole market, and updates as the market moves. It is also independent of federal standards, which matters when those standards are under review.

Why we go beyond ENERGY STAR

How often is it updated, and across how many categories?

Daily, across more than 40 product categories and thousands of models. Daily matters because the distribution moves — a model that was above average two years ago may not be now, and a score that is not recalculated goes out of date.

Is the Enervee Score independent of federal efficiency standards?

Yes. It rates products against the current market distribution in their category rather than against a regulatory threshold, so it does not move when a federal standard is revised or withdrawn.

What evidence is there that showing a Score changes what people buy?

One peer-reviewed paper reporting four studies, three of them randomized controlled trials, published open access in Energy Efficiency (2018). In all four, showing the Enervee Score shifted choices toward more efficient products. In each trial of 200 respondents, the average Score of the product chosen rose by four to five points (from 85.5 to 89.5 in the first), and the largest effect was among low-income shoppers.

Read the paper

Can we use the Enervee Score in our own program materials?

Yes. Licensing the platform includes the right to use the Enervee Score in your own communications.

Put the Score in front of your customers.

Talk to us about what licensing the Score looks like for your territory.

Contact us