Long-term reliability concerns resolved by third generation integrated high-concentration PV systems

Integrated high-concentration (IHCPV) power systems offer one of the lowest-cost, near-term options for PV. High performance, combined with built-in solar tracking, provide enhanced power generation compared to fixed systems with similar peak watt ratings/price. Despite IHCPV's low cost potential and the successful deployment of several 20 kW demonstration systems, end users have been cautious in their acceptance of this emerging technology due to concerns regarding its perceived mechanical complexity and associated long-term reliability. This paper presents the results of 1st and 2nd generation field installations over the last four years. Lessons learned have been resolved and improvements incorporated into 3rd generation systems.