Stahlrim: 150% increase. Much better.
In other words EP has more than doubled for Stahlrim, however this is meant to be used with the upcoming Weapons Integrative Modifications... IE the Weapon Balance Mod Alaisiagae is working on currently. Between the two EP, Damage, AR, Weight, Value, Health, and all the other good stuff will be worked into more predictable sets. A more useful material will be better in almost every way than a less useful one, thought there are a few exceptions, though those are relative values and not objective values.
For instance: Bonemold armors and weapons have 20% more EP than their Value and AR ratings would suggest.
Of course the BEST EP of any armor (whether relative or not) can be safely named as the Telvanni helms (and the rest of the Tlvanni armor in TR). Of course they have abysmal AR and Health ratings.
MASTER									   Weight	Value	EP	Health	AR BaseStalhrim Cuirass		   BM_Ice_cuirass	  27.0	24670	759	1000	55Stalhrim Helmet			BM_Ice_helmet	   4.5	 4112	 190	250	 55Stalhrim Greaves		   BM_Ice_greaves	  9.0	 8223	 285	375	 55Stalhrim Boots			 BM_Ice_Boots		10.8	9868	 342	450	 55Stalhrim Left Pauldron	 BM_Ice_PauldronL	6.3	 5756	 228	300	 55Stalhrim Right Pauldron	BM_Ice_PauldronR	6.3	 5756	 228	300	 55Stalhrim Left Gauntlet	 BM_Ice_gauntletL	4.5	 4112	 190	250	 55Stalhrim Right Gauntlet	BM_Ice_gauntletR	4.5	 4112	 190	250	 55Stalhrim Shield			BM_Ice_Shield	   13.5	12335	949	1250	55
That's the new Atahlrim.