OK, based on discussion at
http://forum.mongoosepublishing.com/viewtopic.php?f=89&t=47816 I find
that the submitter was correct, and only the power plant fuel is needed.
The clarification appears to be in RTT Book 2: High Guard.

On Mon, 09 Jun 2014 19:04:07 -0400, I wrote:

>When using the Hyperspace Drive (Core Rulebook p109), the text states "A
>hyperspace drive consumes no extra fuel, but takes up twice as much
>space as a jump drive. While in hyperspace, the spacecraft moves at a
>rate of one parsec per day per manoeuvre drive rating."
>
>A submitted design for a 400t ship interprets this as requiring only
>power plant fuel, and does not allocate what would have been Jump fuel
>in a standard design.
>
>I am not convinced that this is correct; I believe that the correct
>interpretation should be that the fuel requirement for the Hyperspace
>drive is the same as for the equivalent jump rating of Jump Drive, i.e.,
>in a 400-ton ship, a Jump Drive B would give J1 performance, requiring
>40 tons of fuel; thus, a Hyperspace Drive B requires that same 40 tons
>of fuel to open the two hyperspace portals - after which a Maneuver
>Drive D could provide, per the same page, 2 parsecs/day travel.
>
>Has there been an official statement on which is correct? If so, what is
>the correct interpretation, and where has that official ruling been set
>out?

--
Jeff Zeitlin, Editor
Freelance Traveller
    The Electronic Fan-Supported
    Traveller® Fanzine and Resource

editor@freelancetraveller.com
http://www.freelancetraveller.com
http://freelancetraveller.downport.com/

®Traveller is a registered trademark of
Far Future Enterprises, 1977-2014. Use of
the trademark in this notice and in the
referenced materials is not intended to
infringe or devalue the trademark.

Freelance Traveller extends its thanks to the following
enterprises for hosting services:

CyberNET Web Hosting (http://www.cyberwebhosting.net)
The Traveller Downport (http://www.downport.com)