Computer hardware and software for tracking and displaying electricity including solar electricity production; computer hardware and software for measuring electricity including solar electricity consumption; computer hardware and software for overlaying solar generation and displaying electricity usage patterns; computer hardware and software for managing energy consumption; computer hardware and software for monitoring and displaying electricity consumption; computer hardware and software for calculating financial benefit resulting from energy management; computer hardware and software for calculating environmental benefit resulting from energy management; computer hardware and software for monitoring the efficiency of solar panels; computer hardware and software for monitoring the efficiency of water tanks and water collectors; computer hardware and software for calculating renewable energy consumption and production; computer software for calculating loan repayments and payment plans; electricity generating solar cells and panels; solar batteries; solar collectors for electricity generation; solar energy operating apparatus; solar panels for electricity generation; liquid level indicators for water tanks; panels for water level detection; water quality monitoring equipment; all the aforesaid are goods relating to solar electricity production, usage and monitoring, and water collection, usage and monitoring, and all are for use in relation to or by residential properties, small businesses, not for profit organisations and charities