2024 42 USC 7257d – Expanded research by Secretary of Energy

2023 42 USC 7257d – Expanded research by Secretary of Energy

2022 42 USC 7257d – Expanded research by Secretary of Energy

2021 42 USC 7257d – Expanded research by Secretary of Energy

2020 42 USC 7257d – Expanded research by Secretary of Energy

2018 42 USC 7257d – Expanded research by Secretary of Energy