Deploy solar everywhere. On roofs (inefficient), plug in solar, vertical solar, solar on reservoirs, highways. Everywhere. Use excess production!
Phase 1
1) Buy only EVs[1]
2) Use EVs as energy storage. Pay the EV owners because power price goes negative (or worst case charge at no cost).
3) This will immediately capture clean energy that is being curtailed (~20% or more)
4) Without 3 in place, we can't accelerate clean energy, because curtailment will increase, making it unproductive.
5) Pay the EV owners to supply power back to the grid. They now replace peaker plants, which is the most expensive part of electricity bills.
6) EV storage becomes the new grid, creating a gigantic energy reservoir. Extremely resilient energy storage. (think just like the kube/containers, cattle/pets, etc)
With the scale of EV car adoption, we'll get better and better at batteries, making them significantly cheaper. This will allow us to build battery swapping infrastructure for big vehicles. Most likely, this will be sodium or solid state.
Phase 2: All big vehicles (trucks/buses) can use battery swapping stations spread out everywhere. The battery swapping stations serve multiple functions, they are an essential part of the short term battery storage (multi-day), a layer above the EV storage. And they also provide the battery swap infrastructure. They get paid for being charged (negative price) and then again for the trucks using them. We shouln't build charging infrastructure for big vehicles, it is capital intensive, requires a lot of expensive machinery, real-time transmission capacity, real estate, wasted time, etc.
Long term/seasonal: Build Ammonia --> electricity emergency plants. We need ammonia at a massive scale anyways for fertilizer. The best outcome would be green ammonia (green hydrogen), using excess power from clean energy.
Industrial uses (heat): Green hydrogen on demand, freshly produced from solar. Hydrogen is the smallest molecule, explosive and corrosive, won't work with any storage.
All heating and cooling: Use heat pumps. Use CO2 as refrigerant and ban everything else. We are going to see 100x deployment of ACs everywhere, all of the third world will buy AC as their incomes increase.
[1] Govts could ban all ICE vehicles, but they wont. Fossil fuel lobby wont let them. For the fossil fuel shills who are invitably going to comment that EV doesn't work for them, please continue using your EV for your daily commute from Alberta to San Diego. There will be enough used ICE cars for the next 20 years.