albion:
Not remotely an engineer type carryfast, but I’m not sure that even covered in solar panels there would be enough sun to generate enough electricity in winter.My boat is all diesel, no coal, no gas
In your case do you have just one fuel tank? Looks like fuel for the engine will be higher taxes, but heating fuel won’t? Separate tanks for separate uses and some savings made.
.
Edit. Been an issue since 2008 at least.
Red Diesel. waterways.org.uk