| Southwestern Public Service Company | Xcel Energy | environmental violation | 2020 | TX-ENV | $6,981 |
| Southwestern Public Service Company | Xcel Energy | environmental violation | 2016 | TX-ENV | $15,000 |
| XCEL ENERGY/NORTHERN STATES POWER | Xcel Energy | environmental violation | 2002 | WI-ENV | $600,000 |
| PUBLIC SERVICE CO | Xcel Energy | environmental violation | 2020 | CO-DPHE | $7,000 |
| Xcel Energy Services, Inc. | Xcel Energy | utility safety violation | 2005 | CO-PUC | $5,000 |
| Northern States Power Company (Xcel Energy Services Inc.) | Xcel Energy | utility safety violation | 2020 | ND-PSC | $30,000 |
| Northern States Power Company (Xcel Energy Services Inc.) | Xcel Energy | utility safety violation | 2019 | ND-PSC | $12,000 |
| Northern States Power Company (Xcel Energy Services Inc.) | Xcel Energy | utility safety violation | 2018 | ND-PSC | $9,000 |
| Xcel Energy | Xcel Energy | utility safety violation | 2002 | ND-PSC | $16,000 |
| Northern States Power Company (Xcel Energy Services Inc.) | Xcel Energy | utility safety violation | 2002 | ND-PSC | $16,000 |
| Northern States Power Company (Xcel Energy Services Inc.) | Xcel Energy | utility safety violation | 2002 | ND-PSC | $9,500 |
| Xcel I Southwestern Public Service | Xcel Energy | utility service violation | 2019 | TX-PUC | $74,000 |
| XCEL/ Southwestern Public | Xcel Energy | utility service violation | 2019 | TX-PUC | $68,000 |
| SPS (Xcel | Xcel Energy | utility service violation | 2017 | TX-PUC | $30,000 |
| SPS/XCEL | Xcel Energy | utility service violation | 2016 | TX-PUC | $49,000 |
| Southwestern Public Service Company | Xcel Energy | utility service violation | 2015 | TX-PUC | $14,000 |
| Xcel Energy dba Southwestern Public Service Company | Xcel Energy | consumer protection violation | 2014 | TX-PUC | $32,000 |
| Southwestern Public Service Company | Xcel Energy | utility service violation | 2014 | TX-PUC | $20,000 |
| Southwestern Public Service Company | Xcel Energy | utility service violation | 2012 | TX-PUC | $61,000 |
| Southwestern Public Service Company | Xcel Energy | utility service violation | 2011 | TX-PUC | $45,000 |
| Southwestern Public Service Company | Xcel Energy | utility service violation | 2011 | TX-PUC | $39,000 |
| Southwestern Public Service Company | Xcel Energy | utility service violation | 2010 | TX-PUC | $57,000 |
| Southwestern Public Service Company | Xcel Energy | utility service violation | 2010 | TX-PUC | $55,000 |
| Southwestern Public Service Company | Xcel Energy | utility service violation | 2008 | TX-PUC | $48,000 |
| Southwestern Public Service Company | Xcel Energy | utility service violation | 2006 | TX-PUC | $36,000 |
| Public Service Company of Colorado | Xcel Energy | environmental violation | 2022 | EPA | $925,000 |
| e Prime Inc. | Xcel Energy | price-fixing or anti-competitive practices | 2009 | private lawsuit-federal | $500,000 |
| e Prime Inc. | Xcel Energy | price-fixing or anti-competitive practices | 2019 | private lawsuit-federal | $2,750,000 |
| Xcel Energy Inc. | Xcel Energy | price-fixing or anti-competitive practices | 2021 | private lawsuit-federal | $2,500,000 |
| PUBLIC SERVICE CO | Xcel Energy | environmental violation | 2023 | CO-DPHE | $15,300 |
| PUBLIC SERVICE CO | Xcel Energy | environmental violation | 2023 | CO-DPHE | $8,750 |
| Public Service Company of Colorado | Xcel Energy | utility safety violation | 2023 | CO-PUC | $5,000 |
| NORTHERN STATES POWER COMPANY | Xcel Energy | workplace safety or health violation | 2000 | OSHA | $9,975 |
| XCEL ENERGY | Xcel Energy | workplace safety or health violation | 2004 | OSHA | $7,440 |
| XCEL ENERGY | Xcel Energy | workplace safety or health violation | 2004 | OSHA | $5,050 |
| XCEL ENERGY | Xcel Energy | workplace safety or health violation | 2005 | OSHA | $5,000 |
| PUBLIC SERVICE CO OF COLORADO DBA XCEL ENERGY | Xcel Energy | workplace safety or health violation | 2007 | OSHA | $6,000 |
| PUBLIC SERVICE CO OF COLORADO DBA XCEL ENERGY | Xcel Energy | workplace safety or health violation | 2007 | OSHA | $9,000 |
| PUBLIC SERVICE CO. OF COLORADO DBA XCEL ENERGY | Xcel Energy | workplace safety or health violation | 2007 | OSHA | $150,000 |
| PUBLIC SERVICE COMPANY OF COLORADO DBA XCEL ENERGY | Xcel Energy | workplace safety or health violation | 2009 | OSHA | $5,000 |
| PUBLIC SERVICE CO. OF CO DBA XCEL ENERGY | Xcel Energy | workplace safety or health violation | 2010 | OSHA | $7,000 |
| XCEL ENERGY INC | Xcel Energy | workplace safety or health violation | 2010 | OSHA | $6,500 |
| NORTHERN STATES POWER CO DBA XCEL ENERGY | Xcel Energy | workplace safety or health violation | 2011 | OSHA | $20,000 |
| XCEL ENERGY | Xcel Energy | workplace safety or health violation | 2013 | OSHA | $13,500 |
| PUBLIC SERVICE COMPANY OF COLORADO | Xcel Energy | workplace safety or health violation | 2012 | OSHA | $7,000 |
| XCEL ENERGY | Xcel Energy | workplace safety or health violation | 2012 | OSHA | $5,600 |
| PUBLIC SERVICE COMPANY OF COLORADO | Xcel Energy | workplace safety or health violation | 2015 | OSHA | $7,000 |
| PUBLIC SERVICE COMPANY OF COLORADO | Xcel Energy | workplace safety or health violation | 2016 | OSHA | $12,675 |
| XCEL ENERGY | Xcel Energy | workplace safety or health violation | 2017 | OSHA | $7,696 |
| NORTHERN STATES POWER COMPANY DBA XCEL ENERGY | Xcel Energy | workplace safety or health violation | 2017 | OSHA | $9,400 |
| SOUTHWESTERN PUBLIC SERVICE COMPANY | Xcel Energy | workplace safety or health violation | 2019 | OSHA | $13,260 |
| PUBLIC SERVICE COMPANY OF COLORADO | Xcel Energy | workplace safety or health violation | 2019 | OSHA | $16,670 |
| NORTHERN STATES POWER COMPANY, A WISCONSIN CORPORATION | Xcel Energy | workplace safety or health violation | 2021 | OSHA | $23,204 |
| NORTHERN STATES POWER CO DBA XCEL ENERGY | Xcel Energy | workplace safety or health violation | 2022 | OSHA | $9,450 |
| NORTHERN STATES POWER COMPANY | Xcel Energy | environmental violation | 2003 | EPA | $500,000 |
| XCEL ENERGY CORPORATION | Xcel Energy | environmental violation | 2010 | EPA | $35,000 |
| Xcel Energy, Inc. | Xcel Energy | environmental violation | 2009 | EPA | $95,000 |
| PUBLIC SERVICE CO RIFLE GAS PLANT | Xcel Energy | environmental violation | 2012 | EPA | $50,000 |
| PUBLIC SERVICE CO BAXTER COMPRESSOR STATION | Xcel Energy | environmental violation | 2012 | EPA | $50,000 |
| PUBLIC SERVICE OF COLORADO | Xcel Energy | environmental violation | 2013 | EPA | $14,400 |
