There really aren't any that big that are truly designed from the ground up to be electric. The 40-sized Cap232 from StevensAero is the biggest I know of. (maybe that German site has some, if I could read it)

There are a few that are pretty light, such as the ExtremeFlightRC 68" Yak, even if they were not originally designed to be electric. Some of these are even now recommending electric power as an alternative (such as the EF Yak and H9 Funtana-90). There are several other 60-90 sized models that while not so light, don't come out much heavier than their glow-powered counterparts (when comparing "wet" weights, with fuel). A Hacker C50XL will power most all of them very well and is a good investment, though there are some other motor choices in the 1500-2000 watt class.

Andy Steere
http://astro.umsystem.edu/andy/rc/