| 2026-03-11 | Certain renewable energy |
| 2026-01-01 | Kind of wind … or an alternative to wind |
| 2025-12-20 | Higher power? |
| 2025-06-02 | Kind of power using rooftop panels |
| 2025-04-01 | ___ power |
| 2025-03-04 | Clean energy option |
| 2024-08-11 | Kind of farm |
| 2024-02-06 | Like some panels and flares |
| 2023-09-26 | Kind of green energy |
| 2023-09-14 | Fossil fuel alternative |
| 2023-01-02 | Sun-related |
| 2022-04-21 | With 41-Across, a celestial event ... or a hint to four squares in this puzzle |
| 2021-06-14 | Energy alternative to wind |
| 2020-12-22 | Kind of energy |
| 2020-11-30 | Word before system or power |
| 2020-04-16 | Go ___ (be green, in a way) |
| 2020-03-18 | Word before system or panel |
| 2019-09-30 | Type of clean energy |
| 2019-02-24 | Green, in a way |
| 2018-12-02 | Like some clean energy |
| 2018-11-20 | Renewable kind of energy |
| 2018-09-04 | ___ panel (rooftop installation) |
| 2018-09-02 | Like the Gregorian calendar |
| 2017-08-05 | Kind of cell |
| 2017-07-16 | Alternative to wind |
| 2017-06-07 | Kind of renewable energy |
| 2015-10-05 | Kind of energy with panels |
| 2015-08-12 | ___ power |
| 2015-04-26 | Green energy option |
| 2014-10-16 | Renewable option |
| 2014-07-01 | Certain renewable |
| 2013-07-07 | Sunny? |
| 2012-12-28 | Like panels on some racecars |
| 2012-05-13 | Alternative energy option |
| 2012-03-29 | Kind of power |
| 2012-02-12 | Like some energy |
| 2011-06-29 | Green option |
| 2011-01-03 | Kind of energy or eclipse |
| 2009-03-15 | Alternative energy type |
| 2008-03-14 | Like the Julian calendar |
| 2008-01-11 | Kind of year |
| 2007-06-22 | Kind of wind |
| 2006-06-28 | Alternative to fossil fuels |
| 2006-06-25 | Kind of panel |
| 2005-12-21 | Kind of energy |
| 2005-09-13 | Like some panels |
| 2005-09-12 | ___-powered |
| 2005-04-22 | Kind of cell |
| 2005-02-10 | Like some panels or flares |
| 2003-04-18 | Kind of cycle |
| 2003-02-21 | Kind of collector |
| 2002-11-14 | Kind of energy |
| 2002-02-12 | Kind of power |
| 2002-01-22 | Kind of energy |
| 2001-06-10 | Under Helios's influence |
| 2000-10-02 | Renewable energy type |
| 2000-04-10 | Like some renewable energy |
| 2000-02-07 | Like some renewable energy |
| 1999-11-02 | Kind of energy |
| 1999-02-21 | Kind of panel |
| 1999-01-04 | With 26-Down, a rooftop energy device |
| 1998-08-15 | Kind of battery |
| 1998-06-25 | Kind of battery |
| 1998-02-08 | Like some deities |
| 1997-12-25 | Kind of battery |
| 1997-12-08 | Environment-friendly energy choice |
| 1997-09-27 | Kind of panel |
| 1997-09-11 | Kind of disk |
| 1997-09-04 | Energy choice |
| 1997-06-16 | Kind of energy or flare |
| 1997-06-04 | Kind of flare or system |
| 1996-05-31 | Kind of battery |
| 1995-11-15 | Modern energy type |
| 1995-09-13 | Kind of energy |
| 1995-06-18 | Kind of panel |
| 1994-11-08 | Energy type |
| 1994-03-12 | Kind of panel |
| 1994-03-10 | Energy choice |