Which of the following is an example of an incentive to encourage adoption of renewable technologies?

• A. Penalties for adopting renewables
• B. Tax credits
• C. Subsidies to fossil fuels
• D. Voluntary pledges

Answer: (B)

The key idea here is that incentives work by improving the economic appeal of renewable technologies. Tax credits directly reduce the amount of tax you owe after installing a renewable system, which lowers the net upfront cost and shortens the payback period. For example, a 30% tax credit on a $20,000 installation cuts your taxes by $6,000, making the investment much more financially attractive. The other options don’t provide a financial boost: penalties for adopting renewables would discourage adoption, subsidies to fossil fuels keep the cheaper, less sustainable option in play, and voluntary pledges lack a solid financial incentive to compel action. So tax credits are the clearest example of an incentive that encourages adoption.