nonPVP timers is really bad idea in FULL PVP world.
1. So many peoples can play a game, more then 1-2 houres, on weekend only. And when a timer go on 48 houres... Hello NQ guys, we paying for full game content...
2. If 10 (100, 1000, 1kkkkk) players wants to kill 1 player, they kill him 100%, and its a correctly balance in FULL PVP game. Don't won't to die - "run Forest run..."
3. What about pirat players? Defenders has time to move out all staff and to deconstruct all expensive buildings and machines. Where is a profit?
Power stations ---> power cells (accumulators, condensators)---> shields, turrets, battle ships, trups, def npcs.
For small groups - underground base or freespace.