You have the cause and effect backwards. German homes are electric heated at a rate of around 5%[1], French at around 30%[2] (page 7).

As electricity prices are lowered (e.g. by state investment in nuclear) various things that use fossil fuels will shift over to electric.

1. https://www.cleanenergywire.org/factsheets/heating-40-millio...

2. https://heatpumpingtechnologies.org/annex46/wp-content/uploa...

3. https://strom-report.com/electricity-prices-europe/