In rec.aviation.soaring Morgans wrote:

"Michael Ash" wrote

The extra drag caused by the extra weight of the batteries and
the rest of the hybrid system would probably outweigh any efficiency gain.

Probably? You are being far too kind. A redundant power system, only
helping at takeoff is GOING to waste efficiency. There is no way to avoid
that fact unless then cruise speed is going to be painfully slow.

I don't doubt you in any way, and in fact my general feeling is in
complete agreement with you. But I'm not speaking from a position of great
knowledge so I used a weasel word to indicate that.

--
Michael Ash
Rogue Amoeba Software