Move to build grid-scale solar on industrial rooftops across Australia We’re sorry, this service is currently unavailable. Please try again later. Dismiss Move to build grid-scale solar on industrial rooftops across Australia Normal text size Advertisement The former Ford and General Motors Holden sites will soon become part of a network of rooftop solar farms and grid-scale batteries as part of a joint venture between Australia’s largest commercial and industrial real estate owner and a renewable energy company. Ross Pelligra, chairman of the property giant Pelligra Group, said his organisation will give CEP Energy access to 10 million square metres of rooftop space it owns around the country, allowing the group to sell discounted energy directly to tenants engaged in power-hungry manufacturing processes, and to sell excess power to the grid.