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Generator Supercenter in Stratham installs and services standby generators. A 2026 customer said the company installed a 22kw generator, a level 2 EV charger and a whole-house surge protector, and that of four companies quoted it was the only one willing to dig the lines and hook up to the propane tank. A 2026 customer said a service upgrade, a panel upgrade and a generator were installed on the same day. A 2026 customer wrote that Jack, a master electrician, installed a new electrical panel. In a 2022 review, a customer said Matt Sanford sized the generator rather than selling a bigger one, and that the installation was complete four weeks later. A 2022 customer said another company would have needed someone else to connect the gas line, while Generator Supercenter completed everything and contacted the gas company about replacing the old meter. Scott A Liang's New Hampshire electrician licence, number 20849, is active on the state registry. A 2023 customer reported some damage to their lawn after an installation. A 2021 customer said they drove a bit much on the lawn.
Generator supercenter did an amazing job from start to finish. Service upgrade, panel upgrade and generator installed on the same day. 100% turn key as advertised, all in house electricians and gas fitters. Highly recommend this company when deciding to get a standby generator!
Had 22kw generator, level 2 EV charger and whole house surge protector installed. Got four quotes and not only was Generator Supercenter of NH the cheapest they were the only ones willing to dig the lines and hook up to the propane tank. Weather was horrible, ground was frozen and the team did a great job. Very quick and thorough responses to questions. Would highly recommend.
Had a great experience with our generator installation! On time, good communications, quick response to possible trouble spots! (and our changing of possible sites). Alex did a great job trenching, install, follow up and finishing, like putting the lawn back together! Would highly recommend them for your generator installation!
I highly recommend the Generator Supercenter in Stratham, NH. We recently selected the Supercenter to install a Generac at our location; a location that due to local codes, presented a variety of unique problems regarding equipment location. Through endless patience by their rep”Casey,” the problems were solved to our complete satisfaction. Casey then prepared a very attractive, competitive quote, which we quickly accepted. The installation crew arrived on time, were professional, were tidy, and very friendly; a pleasure to deal with. I also wish to bring attention to “Jack,” the master electrician who installed a new electrical panel for us. Jack was very knowledgeable solving a variety of historical electrical and vexing problems we had ( e.g., out of date, malfunctioning trippers). He did a masterful job. To conclude, I highly recommend the Stratham Supercenter for all of your generator needs. They’re the best!
On time , very professional, my team of installers came in and did a awesome job considering all the snow they had to remove I am highly impressed, great job men and thank you , Joe
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1 change recorded — last scanned Oct 18, 2026.
Typical New Hampshire range for this kind of work, from regional averages — not a quote from GENERATOR SUPERCENTER. Use it to sanity-check bids, then get the real number in writing.
Standard receptacle swaps — a new dedicated circuit is a bigger job ($350–$750).
Flush mounts, pendants, chandeliers — hung on existing boxes.
Estimated range
$460 – $970
Typical electrical project around $720
