
Tesla has started manufacturing its long-awaited photovoltaic(PV) Generation of electricity directly from sunlight. A photovoltaic cell has no moving parts; electrons are energized by sunlight and result in current flow. (PVPhotovoltaics. Generation of electricity directly from sunlight. A photovoltaic (PV) cell has no moving parts; electrons are energized by sunlight and result in current flow.) roofing tiles at a new factory in Buffalo, New York, and customers who plunked down $1,000 deposits last year could start to see their new roofs in the next few months, Reuters reported.