Through the help of its Black Berkey Purification elements,
it reached a higher level of efficiency that made it strong and reliable to filter contaminants and pollutants from water.
Independent green energy retailer Good Energy, have argued that the direct cuts in tariff
levels for PV may not actually be the biggest issue in term
of slowing PV growth - the proposal to limit FiTs to buildings
reaching a
high set
level of energy
efficiency (above «C») could have even more impacts.