The costs of solar have continued to decline, and solar power is carving out larger niches for off-grid applications. It's still a long way from competing for residential or business applications for any sites on the grid, absent massive subsidies. A neighbor of mine put solar panels on his roof. (He took advantage of a promotion that was being offered locally some years back, at the height of the solar subsidy mania.) His out of pocket expenses were about $3,000. The total project cost was about $30,000. Solar pays, if you can get someone else to foot 90% of the bill.
That said, costs continue to decline, and I would not be at all surprised if solar emerged as a viable option. But we're not there yet.