Engineering.com has a look at an Amory Lovins presentation on our ability to switch to 100% renewable energy even without energy storage - Is Storage Necessary for Renewable Energy?.
Physicist and energy expert Amory Lovins, chief scientist at The Rocky Mountain Institute, recently released a video in which he claims that renewable energy can meet all of our energy needs without the need for a fossil fuel or nuclear baseload generation. There’s nothing unusual about that - many people have made that claim - but he also suggests that this can be done without a lot of grid-level storage. Instead, Lovins describes a “choreography” between supply and demand, using predictive computer models to anticipate production and consumption, and intelligent routing to deliver power where it’s needed. This “energy dance,” combined with advances in energy efficiency, will allow us to meet all of our energy needs without sacrificing reliability.
Okay, so there is a little storage involved: ice-storage air conditioning and smart charging of electric vehicles. But where others, including myself, have assumed that large storage devices will need to be added to the grid, Lovins thinks that massive storage facilities are unnecessary, and he presents compelling evidence to support his claim, including actual data from Europe and computer models from NREL. ...
Lovins presents this in the context of storage vs intelligent routing of electricity - which one do we need? That’s a false dichotomy. There will always be a need for storage since many applications are off grid. Obviously storage is needed in order to electrify transportation. So I agree that dynamic routing is the best long term solution for the grid, but we still need to invest in storage technologies. The good thing is that both storage and smart routing can be implemented together, a little at a time, and scaled up gradually.