If it really is using all electric actuators that's pretty big. This would be one of the first of Boston Dynamics' all electric robots.<p>What exactly does using electric actuators over hydraulics buy us? Less noise, greater efficiency, and reliability. Reliability is very important for both house hold and industrial robots. We typically measure reliability in terms of Mean Time Between Failures, aka, how long it typically last before breaking. For industrial robots this is important as the higher the reliability is the more money it makes. Industrial robots tend to have MTBFs of 100,000 hours or about 10 years.<p>Reliability is also important for household robots too, a big expensive robot that breaks down all the time appeals to few people.