ALTERNERGY Holdings Corp. plans to raise up to P5 billion through a proposed issuance of perpetual preferred shares to support funding for its renewable energy projects. In a statement on Wednesday, the company said its board approved the filing of a shelf registration covering up to 50 million perpetual preferred shares priced at P100 apiece. Alternergy plans to issue the shares in one or more series or tranches over five years, to be drawn fro…