The "solar power generators" almost certainly refers to the Annic Nova, which in its original CT form was clearly using solar power to charge up some form of capacitor. It also used those for internal power... note that the ship did not have any power plant or M-Drive in its CT version, just a J-2 and a J-3 jump pod.
"Fuel, Refuel, or Power. The canopy collects radiated stellar power and stores it in the accumulators on the drive deck. The only way to extend the canopy is with the controls on the drive deck or the control panel in the observation dome. It cannot be controlled from the bridge.
The accumulators can store enough energy to power each jump drive once, as well as maintain internal life support under normal conditions.
Duration of internal power: 60 days under ordinary load.
Required recharge time: 1 to six weeks (1D), depending on the distance from, and spectral type of the star serving as the radiation source."
No mention of exotic particles back then. But different editions have different ideas about technology... (TNE, I'm looking at YOU)