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This timeline of sustainable energy research from 2020 to the present documents research and development in renewable energy, solar energy, and nuclear energy, particularly regarding energy production that is sustainable within the Earth system.
Events currently not included in the timelines include:
Research on solar energy since 2020 has focused on improving the efficiency, durability, and recyclability of photovoltaic technologies. Alongside steady industrial cost declines, laboratories and firms have reported world-record efficiencies in perovskite and tandem solar cells, new approaches to recycling end-of-life modules, and integration of PV in agrivoltaics and building materials. [7]
A 2023 review by the International Energy Agency described continued declines in solar PV costs and noted that research into perovskite–silicon tandem cells and recycling of photovoltaic modules represents "the most active innovation area" in renewable energy. [8] Recent media analyses highlight how next-generation materials such as perovskites and quantum-dot photovoltaics are transitioning from laboratory prototypes to commercial lines. [9] [10] [11]
This section summarizes major research advances in photovoltaic and solar-power technology from 2020 onward; for policy or deployment statistics, see Solar power and Timeline of solar cells.
| | This section needs expansion. You can help by adding to it. (September 2020) |
Ongoing research and development projects include SSPS-OMEGA, [39] [40] SPS-ALPHA, [41] [42] and the Solaris program. [43] [44] [45]
| | This section needs expansion. You can help by adding to it. (November 2021) |
Further information: Battery storage power station and Battery innovation timeline.
Research on electric-battery technology since 2020 has focused on improving performance, extending life, and lowering costs for lithium-ion and emerging chemistries such as solid-state and sodium-ion. A 2023 review in *Nature Energy* noted that rapid scaling of cell manufacturing and recycling is “transforming batteries from niche storage to a cornerstone of the energy transition.” [120] According to the International Energy Agency, global grid-scale battery capacity more than doubled between 2020 and 2023, driven by falling costs and advances in cell design. [121]
Research about sustainable energy in general or across different types.
Research and development of (technical) means to substantially or systematically reduce need for energy beyond smart grids, education / educational technology (such as about differential environmental impacts of diets), transportation infrastructure (bicycles and rail transport) and conventional improvements of energy efficiency on the level of the energy system.
| | This section needs expansion. You can help by adding to it. (November 2021) |
Maintenance of sustainable energy systems could be automated, standardized and simplified and the required resources and efforts for such get reduced via research relevant for their design and processes like waste management.
| 2025 in science |
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Not yet included
Timelines of related areas
IEA. CC BY 4.0.● Source for data through 2016: "Renewable Energy Market Update / Outlook for 2021 and 2022" (PDF). IEA.org. International Energy Agency. May 2021. p. 8. Archived (PDF) from the original on 25 March 2023.
IEA. Licence: CC BY 4.0