Submitted by: Natural Systems Limited
Implemented country: New Zealand
Title: Innovative low-cost energy self-providing system
This project is an integrated energy system using a biodigester, a Stirling engine and an ice bank. In New Zealand, many electricity network companies are experiencing a growing electrical load on rural networks due to the rapid increase in dairy farming. Although the irrigation load can be the most significant demand increase in most instances, the refrigeration load that comes on the system at discernable times each day can cause undesirable system peaks. Load leveling using ice-bank storage offers a significant reduction in electrical demand. Ice banks also have other benefits to the dairy industry, such as reserve cooling capacity if the network supply fails. In developing countries, such an integrated system will be capable of preserving the quality of a food product without the supply of electricity from an electricity supply network.