SAVING ENERGY AND THE ENVIRONMENT

ENERGY AUDITS AND SYSTEMS INTEGRATION

Targeting and Monitoring

Once an energy efficiency project has been implemented, the next step is to monitor the results to ensure you achieve the savings. ECOsystems offers to provide this service for free to all our clients because this is also a benefit for us. Having completed many energy efficiency projects, we know what works and which technologies give the best savings.

Research shows that what is measured gets results and for this reason we recommend all our clients measure energy use on a monthly basis. A simple spreadsheet is all that is required and it is very effective for identifying mistakes in invoices or the results of a change of the sites operation. A good rule of thumb is to spend 1 hour for every $2,000 of energy spend. If you spend $100,000 on energy per annum for example, someone should spend 50 hours per annum (1 hour per week) on energy. Just monitoring energy use alone can lead to savings of around 5%.

With more than 30 energy efficiency projects completed between Dunedin and Auckland, ECOsystems has a wealth of experience to draw on.

Some examples:

These graphs show energy use reduction after an energy efficiency upgrade

Monitoring

Actual Graph of a hostel showing overcharge in July.
This demonstrates the importance of monitoring:

By graphing energy usage against degree-day use, we identify where energy is wasted - e.g. August.
This may suggest the controls are not adequate:

An actual college energy balance - identifies where we should concentrate on identifying energy savings:

By graphing time of use (TOU) 1/2 hourly data we identify the peaks and whether it is possible to manage this demand to reduce the charges. Line charge savings are often ignored but offer significant savings:

A typical multi-storey building. This analysis can identify significant variations to investigate:

Energy Balance of a typical office building, identifies where to target energy savings:

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