Vice presidential candidates Mike Pence and Tim Kaine are going head-to-head in tonight’s Vice Presidential debate, and both former governors have shown opposing stances when it comes to renewable energy.

Republican presidential nominee Donald Trump’s running mate, Mike Pence, strongly favored coal funding over solar and renewable technologies when he was governor of Indiana. During his short tenure as governor, he voted against tax credits and incentives for renewable electricity resources, signed the No Climate Tax Pledge and pushed for new oil refineries and offshore drilling across the country.

During the 2015 State of the State Address, Pence said, “We must continue to oppose the overreaching schemes of the EPA until we bring this war on coal to an end.”

Pence did, however, support improving the country’s renewable energy market. In 2007, as a congressman, he co-sponsored legislation to set a national goal of 25 percent renewable energy usage by 2025.

Democratic presidential nominee Hillary Clinton’s running mate, Tim Kaine, strongly favored solar and renewable energy policies while governor of Virginia. He also put an emphasis on increasing technology spending on the state level. During his one term as governor, he voted to cut subsidies for “big oil” companies, established an investment in broadband Internet access for all citizens and advocated for diversifying the state’s energy market with renewable technologies.

“The solution to climate change is American innovation. We need to get beyond the idea that we need to choose between a clean environment and a strong economy,” said Kaine in a 2014 speech in front of the Virginia Senate.

There are some similarities between the two vice presidential candidates. Just like Pence, Kaine also supported the legislation that would improve the country’s renewable energy market by setting a national goal of 25 percent renewable energy usage by 2025.

The Vice Presidential Debate may not be quite as controversial as the face-off between Trump and Clinton, last week. But understanding the vice presidential candidates’ stances on solar and technology is crucial for builders, because these men have the ear of the next President of the United States.