Oil prices have fallen by more than half since July. Just five years ago, such a plunge in fossil fuels would have put the renewable-energy industry on bankruptcy watch. Today: Meh.

Here are seven reasons why humanity’s transition to cleaner energy won’t be sidetracked by cheap oil.

1. The Sun Doesn’t Compete With Oil

Oil is for cars; renewables are for electricity. The two don’t really compete. Oil is just too expensive to power the grid, even with prices well below $50 a barrel.

Instead, solar competes with coal, natural gas, hydro, and nuclear power. Solar, the newest to the mix, makes up less than 1 percent of the electricity market today but will be the world’s biggest single source by 2050, according to the International Energy Agency. Demand is so strong that the biggest limit to installations this year may be the availability of panels.

“You couldn’t kill solar now if you wanted to,” says Jenny Chase, the lead solar analyst with Bloomberg New Energy Finance in London.

2. Electricity Prices Are Still Going Up

The real threat to renewables isn’t cheap oil; it’s cheap electricity. In the U.S., abundant natural gas has made power production exceedingly inexpensive. So why are electricity bills still going up?

Fuel isn’t the only component of the electricity bill. Consumers also pay to get the electricity from power plant to home. In recent years, those costs have soared. Annual investments in the grid increased fourfold since 1980, to $27 billion in 2010, according to a report by Deutsche Bank analyst Vishal Shah. That’s driving bills higher and making rooftop solar attractive.

3. Solar Prices Are Still Going Down

You may have seen this chart before. It’s the most important chart. It shows the reason solar will soon dominate: It’s a technology, not a fuel. As time passes, the efficiency of solar power increases and prices fall. Michael Park, an analyst at Sanford C. Bernstein, has a term for the staggering price relationship between solar and fossil fuels: the Terrordome.

The chart above shows the price of energy from different sources since the late 1940s. The extreme outlier is solar, which only recently entered the marketplace, at a very high price. Prices are falling so fast that solar will soon undercut even the cheapest fossil fuels, coal and natural gas. In the few places oil and solar compete directly, oil doesn’t stand a chance.

Case in point: Oil-rich Dubai just tripled its solar target for the year 2030, to 15 percent of the country’s total power capacity. Dubai’s government-owned utility this week awarded a $330 million contract for a solar plant that will sell some of the cheapest electricity in the world.

Read more: Bloomberg