In 2023, the US government allocated approximately $4.57 billion USD (PPP, constant) to R&D in energy. Forecasts suggest a gradual increase up to $5.0 billion in 2028. Year-on-year growth is consistent, averaging around 1.86%, while the compound annual growth rate (CAGR) over five years is estimated at 1.80%. This indicates steady investment commitment to energy R&D.

Future trends to watch for include:

Emphasis on sustainable and renewable energy innovations fueled by increasing climate concerns.
Potential policy shifts or economic factors influencing budget allocations.
Technology advancements pushing for higher R&D investment.