| MAINTENANCE |
Low maintenance cost – typically one inspection per year with zero servicing |
High maintenance cost – need frequent inspection & servicing |
| SERVICE LIFE |
20 year+ service life = LOW capital cost per annum |
c. 5-10 year service life = HIGH capital cost per annum |
| FAILURE |
Consistent reliability & availability minimise consequential costs of backup failure |
Risk of failure to operate can result in high consequential losses |
| INSTALLATION |
Fast installation & commissioning (c. 2hrs) reduces cost, manpower and disruption |
Typical 1 day installation & commissioning requires expensive & disruptive engineering |
| HOUSING |
Standard weatherproof enclosure & tolerance of harsh environments |
Intolerant of harsh environments: requirement for expensive climate controlled housing |
| MONITORING |
Standard display of status & run time availability is accurate, reliable and accessible online |
Displays of battery status and run time availability are normally a high cost option and deliver limited information |
| WASTE |
No hazardous waste disposal issues |
Cost implications of decommissioning & disposal |