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Casey Bereszniewicz
Energy Efficiency Specialist

caseyb@cescorp.com
​833.237.2677x11
Casey has been in this industry for over four years now.  He has made a significant impact in energy efficiency.  Casey consistently collaborates with his customers to ensure that all energy savings opportunities are uncovered and explored with his customers.  He works hard to provide energy efficiency solutions for his customers and has saved over 3,000,000 kWh, or roughly $540,000.00 over the last two years!  Casey continues to exceed any goals set before him and will work diligently to support your business in your pursuit toward saving energy and money for your business.

Get to know Casey.

​Working with Casey on two energy saving projects this year was a pleasure, beginning to end.  

We replaced our entire building’s office ceiling fixtures.  Great care was taken to make sure we were getting the lighting that we would enjoy.  The installation was promptly scheduled, and the installers carefully worked around the business operations in progress to quickly finish the entire project in a couple of days.  Everyone was very pleased with the results.

A second project, which was recommended during the office lighting upgrade, was the replacement of the lighting inside our large multi-bay garage.  The lighting had previously been upgraded, but this time we ‘got it right’ because the difference is literally like night and day.  Our garage is open 24 hours a day, and the technicians really appreciate the improved lighting.


Helen Koczera
​Cape Cod Express
Wareham, MA

We decided to change the lighting system in our garage from High Pressure Sodium to LED.  Casey Bereszniewicz was in the neighborhood and after couple of visits and pictures; he gave as an estimate with a choice of light fixtures.  A few weeks later the crew came over and in two days, they completed the installation of the new LED lights.  Now inside the shop is brighter with the 3rd of energy consumption savings.  The crew was polite, efficient and they clean after themselves.  Thank you.

Christos Chrysovergis
American Sweeping Co. LLC. And Affiliates
​Quincy, MA 02169

I just had all new lighting installed at my shop by Casey and his crew.  I never thought it was going to be easy.  They were prompt (didn't even take the whole day), polite, efficient and dam good at what they do. We didn't have to stop work, they worked around us.  Everything came out beautiful and the shop looks great with all new lighting.  Even the outside looks great with new lights.  I Have nothing but compliments for all their work!!  Definitely highly recommend them!!  Thanks again, Paul

Paul O'Connor
Owner Deluxe Interiors
New Bedford, MA

​Casey,

I wanted to send you a quick update on how the lights came out. The crew that did the install was very professional, efficient and did an excellent job. We are amazed how much brighter our shop is and the bulbs are half the watts we had before! Very pleased with the whole process and cant wait to see our next bill.

Thanks again,


Joe Parr
​Stearns Irrigation

Complete Energy Services 

407 South Street East, Unit A2
Raynham, MA 02767

Connect with us

​(833) 237-2677
  • About Us
    • Careers
    • Customer Testimonials
  • Meet the Team
  • Our Solutions
    • Lighting
    • Refrigeration
    • HVAC
    • Water Saving
    • Electronics and Weatherization
    • EV Charging Stations
    • Alternative Energy
  • Portfolio
    • Automotive
    • Warehouse
    • Retail
    • Office
    • Municipalities
    • Industrial/Mfg.
  • Energy Assessments
  • Contact
  • Nantucket Energy Assessments