Renewable energy sources are key to community survival as all-electric, net-zero homes take over the housing market.  Community wind farms, hydroelectric dams, and solar arrays reduce the need to send power over distressed power grids and reduce continued reliance on infrastructure.

More experience and information is leading to changes in storage technology (aka, batteries), longevity and durability of equipment, end-of-life recycling of equipment, warranties, etc.

One place to find some answers to solar applications is at EnergySage.  Their website is extremely informative and has governmental support.

News Release: Tenth Edition of Data Book Reveals Trends in U.S. and Global Renewable Energy Growth

Latest Release from NREL Includes Data for Electric Vehicles and Energy Storage for the First Time