Evergreen Solar Inc. announced Friday it has launched a line of small solar panels to be used in battery charging and other off-grid applications. The Marlborough solar panel maker (Nasdaq: ESLR ...

Solar panels, whether grid-tied, off-grid, or hybrid, are all cost-effective and environmentally friendly. Even if connected to the grid, you would still be much less reliant on it for energy.

CARLSBAD, Calif., April 8, 2019 /PRNewswire/ -- OPTEC International, Inc. (OTC: OPTI), today introduced the OPTEC off-grid Solar Powered LED lighting systems, with its proprietary lens technology.