In order to achieve parity with coal, utility solar installations (let alone residential) needs a lot of cost reductions across the board and will likely need s

In order to achieve parity with coal, utility solar installations (let alone residential) needs a lot of cost reductions across the board and will likely need significant infrastructure upgrades (like Germany's) [1]. Better inverters (cheaper, smaller, longer life time) would help keep driving costs down on large scale PV installations while also giving us a lot more breathing room when upgrading our energy infrastructure to deal with these drastically different power sources. [1] http://spectrum.ieee.org/energywise/energy/the-smarter-grid/german-parliament-oks-bold-hvdc-grid-upgrade http://spectrum.ieee.org/energywise/energy/the-smarter-grid/...