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Return of the DEEP: One platform to benchmark them all Cover

Return of the DEEP: One platform to benchmark them all

Open Access
|Aug 2026

Figures & Tables

Figure 1

Data availability (by country).

Source: DEEP Output data on 13/05/2026. Sub-set of projects shown in Chart = 36,496 (projects with total investment) from a Database total of 36,559.

Figure 2

Total investment for building projects (by measure type, logarithmic scale). Source: DEEP Output data on 13/05/2026. Sub-set of projects shown in Chart = 20,574 from a Database total of 36,559. 10%, 25%, 50%, 75% and 90% percentiles are shown in the boxplot.

Figure 3

Payback time for building projects in EU27+UK (by measure type). Source: DEEP Output data on 13/05/2026. Sub-set of projects shown in Chart = 14,579 from a Database total of 36,559. 10%, 25%, 50%, 75% and 90% percentiles are shown in the boxplot.

Figure 4

Avoidance cost for building projects in EU27+UK (by measure type, no discounting). Source: DEEP Output data on 13/05/2026. Sub-set of projects shown in Chart = 17,194 from a Database total of 36,559. 10%, 25%, 50%, 75% and 90% percentiles are shown in the boxplot.

Figure 5

Total investment for industrial projects (by measure type, logarithmic scale). Source: DEEP Output data on 13/05/2026. Sub-set of projects shown in Chart = 14,995 from a Database total of 36,559. 10%, 25%, 50%, 75% and 90% percentiles are shown in the boxplot.

Figure 6

Payback time for industrial projects in EU27+UK (by measure type). Source: DEEP Output data on 13/05/2026. Sub-set of projects shown in Chart = 9,408 from a Database total of 36,559. 10%, 25%, 50%, 75% and 90% percentiles are shown in the boxplot.

Figure 7

Avoidance cost for industrial projects in EU27+UK (by measure type, no discounting). Source: DEEP Output data on 13/05/2026. Sub-set of projects shown in Chart = 11,212 from a Database total of 36,559. 10%, 25%, 50%, 75% and 90% percentiles are shown in the boxplot.

Table 1

Buildings: Median economic indicators and number of projects by measure category for Germany and the US.

MEASUREDE NO. OF PROJECTSUS NO. OF PROJECTSDE PAYBACK (YEARS)US PAYBACK (YEARS)DE AVOIDANCE (CT/KWH)US AVOIDANCE (CT/KWH)DE INVESTMENT (€)US INVESTMENT (€)
Lighting5851,5363.21.13.10.77,8003,248
HVAC Plant2,0345625.10.94.00.223,1342,727
Building Fabric Measures3352237.61.04.10.157,6001,500

[i] Note: Sample sizes differ across economic indicators because not all projects report complete information for every indicator. Payback is static. Avoidance cost calculated at 0% discount rate.

Table 2

Industry: Median economic indicators and number of projects by measure category for Germany and the US.

MEASUREDE NO. OF PROJECTSUS NO. OF PROJECTSDE PAYBACK (YEARS)US PAYBACK (YEARS)DE AVOIDANCE (CT/KWH)US AVOIDANCE (CT/KWH)DE INVESTMENT (€)US INVESTMENT (€)
Heating5403842.40.80.90.114,9282,727
Cooling2511152.51.62.81.020,00010,724
Compressed Air3,4131,3993.90.65.70.516,3481,364
Motors1,1181,3333.91.14.90.612,5394,164
Waste heat (without power generation)2,3383656.31.53.90.256,9249,091

[i] Note: Sample sizes differ across economic indicators because not all projects report complete information for every indicator. Payback is static. Avoidance cost calculated at 0% discount rate.

Language: English
Page range: 32 - 32
Submitted on: Mar 20, 2026
Accepted on: May 25, 2026
Published on: Aug 3, 2026
Published by: European Council for an Energy Efficient Economy (eceee)
In partnership with: Paradigm Publishing Services

© 2026 Lisa Neusel, Clemens Rohde, Carsten Glenting, Spiros Mouzakitis, published by European Council for an Energy Efficient Economy (eceee)
This work is licensed under the Creative Commons Attribution 4.0 License.