In the next 5 to 10 years or so, we'll have a "home monitor" or "home computer" and a home storage device as a part of our homes much like a thermostat, heater, A/C, etc.
Home energy storage is an easy concept — big battery is charged from the electrical grid or solar panels on the home and essentially runs the electricity for the house and helps keep the home off the grid or helps a home be more efficient by powering it up during peak hours. This is one of the reasons why Tesla seems to be more than just an electric car company. A Tesla battery in every home and business? Sounds pretty cool to me.
The home monitor/computer (needs a better name) is going to be a little bit harder to define and it can go a couple ways. The first way is as an extension of the NEST and becomes that connected device that monitors *everything* about a house, temperature, water usage, water quality, air quality, security, and electrical usage. The next is the ability to manage each (automatic turn on/off/regulate) for appliances and lighting, temperature, etc. But how great would it be to know air quality and water quality in your house at all times. I'd love that, I'm sure others would too.
We're moving into the phase where there are connected devices doing that one thing and doing it really well like a NEST thermostat or smoke detector, or one of those smartphone door locks, or one of many connected security systems. There are devices that exist that already do some of the "smart home" functions — pricey though. And then you could even plug your car into the home monitor to make sure everything is running smoothly. Lots of possibilities.
The other way this could go is the home computer/home server where a home server manages all the computers and data for the home, all the photos, music, videos, documents, online accounts and entertainment that serves as the method to keep the main files, serve as a backup, and also as the intermediary to a cloud back up service. Some of this is available now but haven't seen a clean Apple-like solution.
The home server feels like one of the cleaner ways to manage a household where everyone (2+ people) has a computer and a smartphone and possibly another device like a tablet and then another couple of tvs in the home and a few music devices. In a shared household environment, where's the main file (that photo, that music file, that video, that contract) that everyone can use? Alternatively, those files could be all on Dropbox, Google Cloud, iCloud, SkyDrive, somewhere else in the sky?
Where's the primary file? What device can I access it from? Can I cache/store it on that device? Is that file backed up? Is that file backed up to the cloud? Digital hoarding at it's finest or just where we are these days with tech assets.
Going through the user experience is best when considering the most important files you own/store, so likely photos, music, videos, and certain documents.