Name: Hatch Solar Energy Center
Address: US

Overview

The Hatch Solar Energy Center is an operational photovoltaic power station located in New Mexico, United States. It represents a significant example of concentrated photovoltaic (CPV) technology deployment in North America. The facility has a total capacity of 5.88 MWp (peak megawatts), which translates to 5.0 MWAC (alternating current megawatts) under standard operating conditions. This distinction between peak and alternating current capacity is critical for understanding the plant's output relative to the grid connection. The plant was commissioned in 2011, marking a key moment in the regional adoption of advanced solar technologies. At the time of its completion, it held the distinction of being the largest CPV facility in North America. This status highlighted the potential of concentrator photovoltaics to achieve high efficiency in regions with high direct normal irradiance. The plant is operated by Blattner Energy, a company that played a central role in its initial development and technological selection. The operational status of the plant remains active, contributing to the renewable energy mix in the region. The facility's design and technology choices reflect the engineering priorities of the early 2010s, where maximizing efficiency per unit of land area was a primary driver. The use of CPV technology allowed for a higher power density compared to traditional flat-panel photovoltaic systems. This approach required specific site characteristics, including high levels of direct sunlight and relatively clear skies. The plant's location in New Mexico provided these ideal conditions, making it a suitable candidate for this advanced technology. The initial construction involved significant engineering efforts to install the specialized tracking systems and optical components. The plant's capacity of 5.88 MWp was achieved through the use of 84 dual-axis trackers. Each tracker was equipped with Amonix 7700 concentrator photovoltaic panels. These panels utilized 7,560 Fresnel lenses to concentrate sunlight 500 times onto multijunction photovoltaic cells. This concentration ratio allowed the cells to operate at higher efficiencies than standard silicon cells. The technology represented a shift from traditional photovoltaic modules to more complex, optically enhanced systems. The plant's output is sold to El Paso Electric under a 25-year power purchase agreement. This long-term contract provides revenue stability for the operator and a predictable supply of renewable energy for the utility. The annual electricity production is expected to be about 11,000 MW·h/year. This production level supports the energy needs of thousands of households in the region. The plant's performance is monitored to ensure it meets the projected output targets. The use of CPV technology required careful site selection and engineering to maximize the direct normal irradiance captured by the lenses. The dual-axis trackers allow the panels to follow the sun's path across the sky, optimizing the angle of incidence. This tracking system is essential for maintaining high concentration ratios and ensuring that the sunlight is focused accurately on the small multijunction cells. The plant's design reflects the technological capabilities of the time, balancing efficiency, cost, and reliability. The initial choice of Amonix 7700 panels was based on their high efficiency and suitability for the New Mexico climate. The plant's operation has provided valuable data on the performance of CPV technology in a real-world setting. The facility serves as a case study for the application of advanced photovoltaic technologies in utility-scale solar projects. The plant's continued operation demonstrates the viability of CPV systems in regions with high solar resource availability. The power purchase agreement with El Paso Electric ensures that the generated electricity is integrated into the local grid, contributing to the utility's renewable energy portfolio. The plant's capacity and output are key metrics for evaluating its contribution to the regional energy supply. The use of concentrated photovoltaics allowed for a higher power density, reducing the land area required for the same output compared to traditional photovoltaic systems. This efficiency gain was a significant factor in the selection of CPV technology for the Hatch Solar Energy Center. The plant's location in New Mexico provides an ideal environment for this technology, with high levels of direct sunlight and relatively low cloud cover. The operational status of the plant remains active, with ongoing maintenance and monitoring to ensure optimal performance. The plant's contribution to the regional energy mix highlights the role of advanced solar technologies in the transition to renewable energy sources. The use of CPV technology at the Hatch Solar Energy Center represents a significant milestone in the development of solar power in North America. The plant's design and operation provide valuable insights into the potential and challenges of concentrated photovoltaic systems. The facility continues to serve as a benchmark for CPV technology deployment in utility-scale solar projects. The plant's performance data and operational experience contribute to the broader understanding of solar energy technologies. The Hatch Solar Energy Center remains an important asset in the regional renewable energy landscape, demonstrating the viability of advanced photovoltaic technologies in a utility-scale setting.

Why it matters

The Hatch Solar Energy Center holds a distinct place in the chronology of United States solar infrastructure due to its pioneering use of Concentrator Photovoltaics (CPV) technology. Upon its completion in 2011, the facility was recognized as the largest CPV installation in North America. This distinction is significant because CPV represents a specific technological pathway that diverges from the dominant flat-panel silicon modules that currently saturate the market. The original design, executed by Blattner Energy, utilized 84 dual-axis trackers equipped with Amonix 7700 panels. This high-radiation approach aimed to maximize the efficiency of the solar cells by leveraging direct normal irradiance, a factor critical for CPV performance compared to the diffuse light tolerance of standard photovoltaics.

The operational history of the Hatch facility illustrates the rapid evolution and subsequent challenges within the solar hardware sector. The original CPV technology, while innovative, faced market pressures that led to a significant technological shift. The facility was subsequently repowered with SunPower panels, which utilize high-efficiency monocrystalline silicon cells without concentration. This transition from complex optical concentration systems to advanced flat-panel silicon technology reflects broader industry trends where manufacturing costs, maintenance complexity, and reliability metrics favored the latter. The repowering decision underscores the dynamic nature of solar asset management, where initial technological choices are often revisited as component efficiencies and costs evolve over the asset's lifecycle.

From an energy output perspective, the facility contributes to the regional grid stability through a structured commercial arrangement. This consistent output supports the integration of variable renewable energy into the local distribution network. The facility's capacity is rated at 5.88 MWp (peak power) and 5.0 MWAC (alternating current capacity). The distinction between peak and AC capacity highlights the importance of inverter sizing and system losses in determining the effective output delivered to the grid. The Hatch Solar Energy Center thus serves as a case study in the practical application of solar technology, demonstrating both the potential of specialized photovoltaic architectures and the economic realities that drive technological standardization in the solar energy sector.

How does Concentrator Photovoltaic (CPV) technology work?

Concentrator Photovoltaic (CPV) Technology

The Hatch Solar Energy Center was originally designed using Concentrator Photovoltaic (CPV) technology, specifically the Amonix 7700 panels. Unlike traditional photovoltaic systems that rely on large surface areas of semiconductor material, CPV systems use optics to concentrate sunlight onto small, high-efficiency solar cells. The Amonix 7700 modules employed 7,560 Fresnel lenses per panel to focus sunlight 500 times onto multijunction photovoltaic cells. This concentration factor, denoted as C=IincidentIconcentrated, allows the system to achieve high efficiency with less semiconductor material, though it requires precise tracking of the sun.

Each Amonix 7700 panel utilized dual-axis trackers to maintain optimal alignment with the sun, maximizing the concentration of light onto the multijunction cells. The facility initially consisted of 84 such trackers, forming the largest CPV facility in North America upon its completion in 2011. The use of Fresnel lenses enabled the concentration of sunlight by a factor of 500, significantly enhancing the power output per unit area compared to non-concentrating systems.

Comparison of CPV and Traditional PV

Characteristic	Concentrator Photovoltaic (CPV)	Traditional Photovoltaic (PV)
Optical Concentration	Uses Fresnel lenses to concentrate sunlight 500 times	Minimal to no concentration
Solar Cells	Multijunction cells	Monocrystalline or polycrystalline silicon cells
Tracking System	Dual-axis trackers required	Single-axis or fixed-tilt often sufficient
Efficiency	High efficiency due to concentration	Moderate efficiency
Material Usage	Less semiconductor material needed	Larger surface area of semiconductor material

While the initial installation at Hatch Solar Energy Center utilized CPV technology, the facility was later repowered with SunPower panels. These newer panels use high-efficiency monocrystalline silicon cells without concentration, representing a shift from CPV to traditional PV technology. This change reflects the evolving landscape of solar technology, where different approaches are adopted based on efficiency, cost, and maintenance considerations.

What distinguishes the Hatch facility from other solar parks?

The Hatch Solar Energy Center is distinguished by its pioneering use of Concentrator Photovoltaics (CPV) technology, a configuration that was relatively rare for utility-scale solar farms at the time of its 2011 commissioning. The facility was originally engineered by Blattner Energy using Amonix 7700 concentrator photovoltaic panels. This specific technology relies on optical concentration rather than the sheer surface area of silicon cells typical of standard photovoltaic arrays. Each of the 84 dual-axis trackers employed in the initial build contained 7,560 Fresnel lenses. These lenses functioned to concentrate incoming sunlight by a factor of 500, focusing the solar irradiance onto multijunction photovoltaic cells. This high-concentration approach allowed for efficient energy capture in regions with high direct normal irradiance, distinguishing the Hatch facility as the largest CPV installation in North America upon its completion.

Repowering and Technological Evolution

The operational history of the Hatch facility includes a significant technological shift through a repowering initiative. The original Amonix CPV modules were subsequently replaced with SunPower panels. This repowering marked a transition from concentrated light technology to high-efficiency monocrystalline silicon cells that operate without optical concentration. Unlike the previous configuration which required precise dual-axis tracking to maintain the 500x concentration factor, the SunPower panels utilize a different efficiency profile inherent to the monocrystalline silicon material itself. This change reflects broader industry trends and operational strategies in solar energy infrastructure, where technology upgrades are implemented to enhance performance or reliability over the asset's lifecycle. The facility maintains its operational status under this updated technical configuration, continuing to supply electricity to El Paso Electric under a 25-year power purchase agreement.

History and Development

The Hatch Solar Energy Center was developed as a significant milestone in concentrated photovoltaic (CPV) technology in North America. The facility was constructed by Blattner Energy, which served as the primary builder and operator of the project. The initial design relied on advanced optical systems rather than traditional flat-panel arrays. Specifically, the station utilized 84 dual-axis trackers equipped with Amonix 7700 concentrator photovoltaic panels. These panels incorporated complex Fresnel lenses to concentrate sunlight 500 times onto multijunction photovoltaic cells, a configuration designed to maximize energy yield per unit area under direct normal irradiance.

Initial Capacity and Power Purchase Agreement

The Hatch Solar Energy Center was commissioned with a peak capacity of 5.88 MWp (megawatts peak) and an alternating current (AC) capacity of 5.0 MWAC. This dual-rating system reflects the difference between the direct current output of the photovoltaic modules and the final alternating current delivered to the grid after inverter losses. The facility was designed to generate approximately 11,000 MWh of electricity annually. To secure revenue streams for this output, the project established a 25-year power purchase agreement (PPA) with El Paso Electric. This long-term contract ensured that the electricity produced by the station would be sold to the local utility provider, stabilizing the financial model for the investment in CPV technology.

Repowering and Technological Transition

Following its initial operational phase, the Hatch Solar Energy Center underwent a significant technological upgrade known as repowering. The repowering decision reflected broader industry trends evaluating the balance between the high efficiency of CPV systems and the cost-effectiveness and diffuse-light performance of advanced monocrystalline silicon technologies. The facility remains operational under the management of Blattner Energy, continuing to contribute to the local energy mix with its updated solar array configuration.

Worked examples

The Hatch Solar Energy Center provides a practical case study in solar energy yield estimation and capacity factor analysis, particularly given its transition from Concentrator Photovoltaics (CPV) to standard monocrystalline silicon technology. Understanding the relationship between peak power ratings and actual annual output is critical for evaluating the performance of utility-scale solar assets.

Example 1: Estimating Annual Production from Peak Capacity

To contextualize the reported annual production of 11,000 MW·h/year, we can estimate the expected output based on the plant's initial 5.88 MWp (peak megawatts) rating. This calculation assumes a standard solar resource profile for the region. We do not have the exact location-specific solar irradiance data in the snippets, but we can work backward from the reported output to find the effective full-load hours.

Calculation: Effective Full-Load Hours = Annual Production / Peak Capacity

Effective Full-Load Hours = 11,000 MW·h / 5.88 MW ≈ 1,871 hours/year

This result indicates that the plant performs as if it were operating at full peak capacity for approximately 1,871 hours annually, which is consistent with high-yield solar sites in the southwestern United States.

Example 2: Analyzing Capacity Factor Based on AC Output

Capacity factor is a key performance indicator that compares actual output to potential output if the plant ran at full nameplate capacity 24/7. Using the 5.0 MWAC (alternating current) rating provides a more accurate reflection of grid-delivered energy.

Step 1: Calculate maximum possible annual output at 5.0 MWAC.

Max Output = 5.0 MW × 24 hours/day × 365 days/year = 43,800 MW·h/year

Step 2: Calculate the capacity factor.

Capacity Factor = (Actual Annual Production / Max Possible Output) × 100

Capacity Factor = (11,000 MW·h / 43,800 MW·h) × 100 ≈ 25.1%

A capacity factor of 25.1% is relatively high for solar, reflecting the high-efficiency nature of the original Amonix 7700 CPV panels and the strong solar irradiance at the site.

Example 3: Impact of Technology Repowering on Performance Metrics

The plant was later repowered with SunPower monocrystalline silicon panels. While the snippets do not provide the new exact MWp rating, the shift from CPV to standard silicon typically changes the performance ratio. CPV systems are highly sensitive to direct normal irradiance (DNI), whereas monocrystalline silicon performs well under both direct and diffuse light. Analysts would recalculate the capacity factor using the new nameplate capacity to assess the efficiency gains from the repowering initiative, ensuring the 25-year power purchase agreement with El Paso Electric remains economically viable.

Applications and Grid Integration

The Hatch Solar Energy Center integrates with the regional power infrastructure through a direct commercial relationship with El Paso Electric, the primary utility provider serving the area. The facility’s output is sold to El Paso Electric under a 25-year power purchase agreement (PPA), a standard financial structure in the renewable energy sector that provides revenue stability for the operator, Blattner Energy, while securing a fixed volume of solar generation for the grid. This long-term contract aligns with the plant’s commissioning in 2011, ensuring consistent power delivery over a quarter-century period. The agreement facilitates the integration of the plant’s 5 MWAC capacity into the local distribution network, contributing to the utility’s portfolio of variable renewable energy sources.

Generation Profile and Output

The facility is designed to produce an annual electricity output of approximately 11,000 MW·h/year. This production level is critical for evaluating the plant’s contribution to El Paso Electric’s load profile. The energy yield can be contextualized by calculating the capacity factor, which measures the actual output relative to the maximum possible output over a given period. Using the annual production of 11,000 MW·h and the AC capacity of 5 MW, the capacity factor is derived as follows:

Capacity Factor=Rated Capacity×Hours in YearAnnual Energy Output=5 MW×8,760 h11,000 MW⋅h≈25%

This calculation indicates that the plant operates at roughly 25% of its maximum potential over the course of a year, a typical range for solar photovoltaic installations in the region. The integration of this variable generation source requires grid management strategies to accommodate fluctuations in solar irradiance. The repowering of the facility with SunPower panels, which utilize high-efficiency monocrystalline silicon cells, further optimizes the energy yield per unit of land area, enhancing the efficiency of the grid connection. The transition from the original Amonix 7700 concentrator photovoltaic technology to standard monocrystalline panels reflects an adaptation to improve reliability and maintenance efficiency, thereby supporting the long-term commitments outlined in the PPA with El Paso Electric.

Hatch Solar Energy Center