hi tom
tx it worked!! iou man!!!
1/ downloaded card-tools.js from https://github.com/thomasloven/lovelace-card-tools + put it in the root of www-folder + entry in ui-config from lovelace. I had to chmod 777 the file otherwise error messages.
2/ installed card-templater from hacs
3/ put
type: 'custom:card-templater'
entities:
- sensor.analyze_2_eandis
- sensor.analyze_2_zonnepanelen
- sensor.analyze_2_verbruik
card:
type: 'custom:canvas-gauge-card'
before original card and then used in the original card with _template suffix for naming,
eg
from_template: '{{ states(''sensor.analyze_2_zonnepanelen'')|float}}'
to_template: '{{ states(''sensor.analyze_2_verbruik'')|float}}'
title_template: '{{ state_attr(''sensor.analyze_2_eandis'',''friendly_name'') }}'