| 34231 | United States | Lakes Electric | Howell, Michigan 48843 | +1 248 2744261 | https://www.lakeselectricmi.com | | |
| 34232 | United States | Lam Electrical and Control | California | +1 916 4192891 | lamelectric.com | Enphase Energy, Inc. | |
| 34233 | United States | Lamb Energy Inc. | 3421 Gato Court Suite C, Riverside, CA 92507 | +1 951 6849303 | www.lambenergy.com | SMA Solar Technology AG | |
| 34234 | United States | Lance Cotner Electric, L.L.C. | 2037 Woodlawn Ave., Cape Girardeau, MO 63701 | +1 573 2902272 | lancecotnerelectric.com | | |
| 34235 | United States | Land and Sea Solar | 333 Alder Avenue, Ben Lomond, CA 95005 | +1 831 3368650 | www.landandseasolar.com | | |
| 34236 | United States | Landmark Solar | 30995 Old Hwy 61, Taylor, MO 63471 | +1 573 3932497 | www.landmark-solar.com | SunPower Corp. | |
| 34237 | United States | Lane Electric Company | 307 26th Street North, Pell City, AL 35125 | +1 205 7533904 | www.lane-electric.com | | |
| 34238 | United States | Lapo Solar | Port Chester, New York, NY 94117-1080 | +1 800 6780345 | laposolar.com | | |
| 34239 | United States | Lapp Electric | 2420 Gehman Lane Lancaster, PA 17602 | +1 717 3920804 | https://www.lappelectric.com | | |
| 34240 | United States | Laredo Company | | +1 281 3450981 | www.laredoco.com | | |
| 34241 | United States | Larson Engineering, Inc. | 3524 Labore Road, White Bear Lake, MN 55110-5126 | +1 651 4819120 | www.larsonengr.com | | |
| 34242 | United States | Larsun | 1611 Pomona Rd., Ste. 206, Corona, CA 92880 | +1 949 2944220 | larsun.com | | |
| 34243 | United States | Las Vegas Solar Built | Las Vegas, Nevada | +1 702 7435368 | https://bill405.business.site | | |
| 34244 | United States | LaSalle Electric | 31105 Reserve Drive Thousand Palms, CA 92276 | +1 760 4040379 | www.lasallesolar.com | | |
| 34245 | United States | Lase Solar LLC | 10 W Center St, Nazareth, PA 18064 | +1 888 6085273 | https://lasesolar.com | | |
| 34246 | United States | Laser Electric, Inc. | 7626 Miramar Rd., #3300, San Diego, CA 92126 | +1 858 3488984 | www.laserelectric.com | | |
| 34247 | United States | L.A. Solar Systems, Inc. | 10319, Leolang Ave #3114, Sunland-Tujunga, CA, 91040 | +1 818 6676633 | www.lasolarsystemsinc.com | Suntech Power Co., Ltd., Canadian Solar Inc. | SMA Solar Technology AG, Fronius International GmbH, Enphase Energy, Inc., SolarEdge Technologies, Ltd. |
| 34248 | United States | LastMile Energy | 9 Larason Farm Road Sharon, MA 02067 | +1 781 6862729 | https://www.lastmile-energy.com | | |
| 34249 | United States | Laven Electric LLC | 836 Spruce St, Leavenworth, KS 66048 | +1 913 6835057 | www.lavenelectric.com | Siemens Energy, Enphase Energy, Inc., SolarEdge Technologies, Ltd., Eaton Corporation | |
| 34250 | United States | Lawson Electric Co | 409 Spring Street, Chattanooga, TN 37405 | +1 423 2675471 | www.lawsonelectric.com | | |
| 34251 | United States | Laxton Electric | 6412 McCann Rd, Longview, Tx 75605 | +1 903 7207238 | laxtonelectrictx.com | | |
| 34252 | United States | Layman Electric Inc | 1628 Culpepper Ave., Suite A, Modesto, CA 95351 | +1 209 5222244 | laymanelectric.com | | |
| 34253 | United States | LB Electric Co., LLC | 50 Commerce Road Cedar Grove, NJ 07009 | +1 973 5712200 | www.lbelectricco.com | | |
| 34254 | United States | Lights Camera Action Systems | | +1 203 4387000 | https://lca-usa.com | | |
| 34255 | United States | LE Construction General Building Contractor Inc. | Santa Paula, CA, 93060 | +1 805 9210405 | leconstruction.net/ | | |
| 34256 | United States | Leading Grand Rapids Electric | 2153 Wealthy St., SE Suite 172, Grand Rapids, MI 49506 | +1 616 2023717 | www.electricalgrandrapids.com | | |
| 34257 | United States | Leale's RV | 2070 S. 7th St., Ste A, San Jose, CA, 95112 | +1 408 2865353 | https://www.leales.com | | |
| 34258 | United States | Lean Solar | 19225 Road 24, Madera, CA 93638 | +1 877 5406716 | www.leansolar.com | | |
| 34259 | United States | Lear Electric Co., Inc. | 6002 NE 112th Ave., Portland Oregon 97220 | +1 503 2550733 | https://learelectric.org | | |
| 34260 | United States | Leavenworth Electric and Excavation | 15353 Highway 2, Leavenworth, WA 98826 | +1 509 4331800 | www.leavenworthelectricandexcavation.com | | |