By David E. Garrow, POLITICO Washington staffA few years ago, solar light was just a thing.
The sun wasn’t coming out.
It wasn’t setting.
It didn’t make a dent in the sky.
But in 2017, solar power has exploded in popularity, and it’s become the go-to technology for lighting your home.
In the past decade, solar panels have become a common fixture in nearly every home, and they’re getting brighter and brighter.
In 2018, solar costs fell to less than half what they were in 2009, according to a new report by the Solar Foundation, a nonprofit that advocates for clean energy.
That means consumers are saving up to $4,000 annually on electricity, compared with a $10,000 bill in the early 2000s.
That’s a big deal for homeowners, because solar is cheap.
And it has been the most widely used energy source in the U.S. for years.
But there are still challenges.
Solar panels are bulky and can take a long time to charge up.
And the panels need to be replaced often.
And, of course, they’re expensive.
The price of solar panels has doubled since 2009, when the cost of electricity was $5.30 per kilowatt-hour.
That’s more than twice what it was in 2009.
The solar industry’s latest challenge is the emergence of cheaper and cheaper solar energy sources, including solar photovoltaics, or PV, and distributed solar power.
The PV industry is growing at a rapid pace.
In 2017, there were more than 13 million PV panels installed in the United States, according the Solar Energy Industries Association.
That was up more than 30 percent from 2016.
The rise in PV installations has coincided with a surge in solar prices.
That, along with the proliferation of rooftop solar installations, have been pushing solar panels out of reach for many consumers.
Solar panel prices are rising by more than 60 percent in California and nearly 20 percent in Arizona, the report says.
That has forced some homeowners to switch to rooftop solar.
In some areas, such as Arizona, there’s a lack of solar power that isn’t on the grid, which is hurting consumers.
For some people, solar can make up for the lack of electricity, but for others, it’s not a viable option.
“It’s going to be a very long-term battle, but I think it’s going the right way,” said Tom Danker, executive director of the Sunbelt Alliance, a solar industry group.
Danker said solar energy is making a comeback, with the number of residential and commercial installations rising from 1.2 million in 2013 to 3.7 million in 2017.
In 2019, there will be more than 2.7 gigawatts of solar capacity in the country, according an estimate by the U,S.
Department of Energy.
But not everyone is convinced that solar is the answer.
In Texas, where solar is booming, some residents are concerned that solar will lead to a “dumping” of solar-generated electricity.
“There are people who are saying, ‘Why are we wasting money on solar panels?
Why are we spending $5,000 to get a roof over our head?'” said Jeff Johnson, an electrician who lives in the Austin suburb of Waco.
Johnson said he’s worried about solar power’s effect on local air quality.
That could be a problem in rural areas, where air pollution is higher, as solar panels could also contribute to a rise in sulfur dioxide, which can cause respiratory problems.
For now, the sun isn’t shining.
And most homeowners have solar panels on their rooftops, but not every homeowner has solar power installed.
In many areas, rooftop solar isn’t available because of high energy costs or high-priced solar panels.
And in the past few years, the price of electricity has dropped in the solar industry, which has led to a surge of new solar installations.
There are now more than 600,000 installed solar panels in the entire U.N. system, which includes solar in more than 1,600 countries, including the U., U.K., China, Japan and Australia.
The report estimates that, as of 2020, solar had contributed more than $4 trillion to the global economy.
That includes direct costs such as energy, construction, installation, transmission and maintenance.
It also includes indirect costs, such a the costs of distribution and other benefits that come with solar, such support from utilities and tax breaks.
Solar installations have more than doubled in the last 20 years, and solar photowatt hours, the amount of electricity generated by a solar panel, have increased by 70 percent, according.
That makes solar a natural choice for homeowners.
Solar panels have been in the spotlight as a key component in the transition to a low-carbon economy, and the growth of rooftop and other solar installations has made it easier for some people to afford solar power for their homes.
In New York, where the