B. T. Design & Build LLC

Solar - Photovoltaic

Welcome to the B.T. Design & Build LLC information page. We are the premier provider of Solar services. Our goal is to provide the very best in Photovoltaic site surveys, system design and installation. . Because our quality control standards are high, our employees are among the best in the business. Our goal is to always deliver the best value for you money. We want you, our valued customer, to be happy. Here is a list of our services.


Professional Site Evaluation

We use the Solmetric SunEye 210 integrated Shade Analysis Tool for solar site assessment. It includes a fisheye camera and a dedicated on-board processor to perform digital image processing and analysis to compute shading and solar access percentages. It includes an electronic compass and inclinometer enabled to measure roof pitch and azimuth

We will come to your home or office to prepare an assessment of the PV capabilities at your site. A detailed report will be provided showing estimated annual performance.


Solmetric PV Designer Software

PV Designer software enables you to quickly and easily: draw a roof outline, specify set-backs and keep-out regions, incorporate SunEye shade measurements at specific locations on the roof, drag-and-drop modules, size strings, check inverter limits, and calculate the AC energy production for your system. It includes extensive world-wide databases of modules, inverters, and historical weather. You can easily try different design scenarios and compare their AC kW-hr outputs side-by-side to identify the best design. Results can be exported in a PDF format and printed or emailed to clients. The software is designed for residential and small commercial systems.

PV Installation

We have the tools an knowledge to mount your system in the harsh New England conditions.

Annual Maintenance

Keep your system operating at its peak levels with a annual service contract. We will clean check the system each year.