Savings Achieved:$23,500 p.a.
EnergyLink installed the EnergyLink smart energy management system at Radford College in July 2015. Utilising the granular visibility of the EnergyLink sub-meters, several critical areas for improvement were identified at Radford College, summarised in the sections below.
- Reduce electricity consumption
- Minimise utility invoices
- Improve air conditioning, heating and lighting schedules
- Reduce network charges and large demand spikes
- Live minute by minute electricity and power quality data
- Dedicated sustainability engineer
- Daily monitoring of equipment and devices by EnergyLink engineers
- Reporting and teleconferences
- Monthly reports and teleconferences
- Smart threshold alerts which red flag any increases in consumption
- Base loads significantly reduced
- Air conditioning hours trimmed to match operational hours
- Demand spikes significantly reduced through scheduling
- Holiday and public holiday processes implemented
- Savings achieved – $23,500
- kVA network demand reduction – 110 kVA
- Reduced utility invoices and greenhouse gas emissions
- Ease of reporting
- Return of investment and improved equipment lifecycle
- Smarter procurement of energy contracts
- Bill tariff verification
- Encouraging education and behavioural changes
EnergyLink identified that across the school there were several heating and air-conditioning loads that contributed to a spike occurring at 10 AM in the morning resulting in network charges in excess of 60% of the bill. This spike was reduced by identifying the contributing units and implementing smart schedules to reduce the load from 9 AM to 11 AM. The resultant electricity profile was significantly smoother and kWh consumption was also reduced. EnergyLink has set up smart alarms to raise an alarm if the spike occurs above the kVA threshold. In total during winter months the kVA reduction will result in a 110 kVA reduction or $1,500 per month from May – October ($9,000 per year).
Scheduled heating and HVAC loads have continued to operate throughout the school holiday period. This results in higher consumption charges and higher bills than necessary for 3 months of the year when holidays fall. Through sub-metering each main building at Radford College, the facilities manager was able to target buildings with high base loads and schedule off any heaters that were not required. Correcting schedules and implementing efficient schedules to match school periods has dramatically cut electricity and save $6,500 per year.
Radford College has large underfloor heating which is required during Winter when temperatures are below zero. Optimising the set points and operating hour schedules has significantly reduced consumption in October 2015\. Consumption on the Middle School in Oct 1st – 27th 2014 was 40,340 kWh. In Oct 1st – 27th 2015 consumption was 29,580 kWh. This represents a large saving of 27% this month or $8,000 in the shoulder months per year.