Question-How Reduce Power Costs?

[Katy-Texas]

Advice please, new to pools, had ours (~26,000 USG salt water) 10 months now. Power rates here in Texas went up ~50% this winter, not looking forward to power bill for AC & pool this summer !

Read tips on www.poolsolutions.com including one on mail filter pump HP and power costs, I have "standard" 2.0 HP main filter pump (Pentair WhisperFlo Model WF-28, Service Factor = 1.1) and probably small plastic lines between pump and pool and thus high backpressures due to friction et al. Not good.

1) Curious (as too late to change), how do I measure pipe sizes is it OD or ID?

2) To reduce power cost assume I assume not worth changing this "big" pump out as less than 1 year old?

3) Water circ back to pool via white plastic nozzles at sides of pool and in spa that are screwed onto the plastic pipes. Seems to me that if I removed these nozzles then back pressure would be significantly less and thus pump volume would be significantly higher and thus I could run pump less per day?

4) OK so removing nozzles would be unsightly, how about I just drill them out to 1" holes?

5) Any other power saving ideas?

Thanks in advance . . .