"Andrew Gabriel" wrote in message
...
In article ,
"Mary Fisher" writes:

"Andrew Gabriel" wrote in message
...

Not much. In spite of much research, their efficiency has
only doubled in the ~50 years since they were invented, and
almost none of that was recently

If the research you read was differnt would you be persuaded?

Not sure that's a sensible question. I've kept an eye on
the research to see if there's anything on the horizon.
The research is largely irrelevent though -- it's how they
perform now that governs if I would be persuaded now. The
lack of progress is disappointing, but I'm aware it's not
for want of trying -- lots has been done and it's had
serious money behind it from areas such as the space
industry and energy industry, something which other
renewable sources really struggle for.

If they were more efficient or significantly cheaper, I
might be persuaded.

Early motor cars were neither. Those who bought them were pleased with
them - and more R&D was done on the back of that.

It might happen again :-)

By the way, we live on the state pension but could afford a dhw panel.
They're not that expensive.

Mary