Brilliant Light Power is a company that claims, on their web-site, to have:
developed a new commercially competitive, non-polluting, plasma-based primary source of massive power from the conversion of hydrogen atoms of water molecules to dark matter, the previously unidentified matter that makes up most of the mass of the universe. The SunCell® that was invented to harness the new power source catalytically converts hydrogen directly into dark matter form called Hydrino® releasing brilliant high-energy light which is down-converted in energy to facilitate the production of electricity using commercially-available concentrator photovoltaic cells.
Their Wikipedia page says:
Brilliant Light Power, Inc. (BLP), formerly BlackLight Power, Inc. of Cranbury, New Jersey is a company founded by Randell L. Mills, who claims to have discovered a new energy source. The purported energy source is based on Mills' assertion that the electron in a hydrogen atom can drop below the lowest energy state known as the ground state.
Have Brilliant Light Power demonstrated a new energy source?