Design-Build Multi-Family Solar Thermal System
This Design-Build multi-family solar thermal project, completed in March 2025 in Los Angeles, features a 24-panel system paired with 1,500 gallons of solar storage. The setup delivers 1.2 million BTU per day and supplies roughly 75% of the hot water needs for a 60-unit apartment building.
Client Background
Portrait Construction is a leading builder of multi-family housing in Southern California. As part of their projects, they are responsible for implementing architect-specified sustainability features. When solar thermal is part of the design, they require a partner capable of delivering a complete design-build system that meets specifications without adding complexity to their process.
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Company: Portrait Construction
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Industry: Construction
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Operations Size: 70 employees
Challenge
For this project, the energy challenge was primarily on behalf of the tenants: ensuring sustainable and affordable hot water supply in a large multi-family complex.
Key Constraints
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Tight budget and competitive bidding environment
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Strict project timeline
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Permitting requirements unique to Los Angeles
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Structural space considerations for solar thermal integration
Business Impact
If the system wasn’t implemented correctly, Portrait Construction risked losing the bid to competitors such as SBI Construction. Successful integration of the solar thermal system was essential to winning and delivering the project.
Solution
Maktinta provided a turnkey solution, overseeing the full process:
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Engineering and design
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Permitting
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Installation
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Integration with building systems
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Commissioning
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Training of maintenance personnel
System Details
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Technology: Solar Thermal
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Capacity: Architect-driven, installed on roof/parking/ground mounts depending on space
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Integration:
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Solar thermal: building’s boiler and hot water storage
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Solar PV: building’s electrical panels and utility tie-in
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Value-Add: Remote monitoring, variable-drive pumps, advanced controls, and patented racking system
Timeline:
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Design: 2 weeks
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Permitting: 3–6 weeks (municipality dependent)
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Installation: 3–4 weeks
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Commissioning & Training: 1 week
Results
Performance Metrics (System-Dependent)
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Annual kWh generated / Therms offset
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Energy cost reduction: Significant (system size dependent)
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CO₂ offset: Significant (system size dependent)
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ROI / Payback Period: 5–7 years
Operational Improvements
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Reduced reliance on natural gas
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Lower utility costs for residents
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Compliance with local energy regulations
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Long-term resilience with remote monitoring and fewer outages
Client Testimonial
We are also extremely satisfied with the quality of the system components, especially compared to competitors. Maktinta Energy specified ASME-rated solar storage tanks with superior insulation and high-temperature capabilities, ensuring greater thermal efficiency and system durability through seasonal temperatures and system requirements.
Key Takeaways
A quick overview of the project’s impact and the value Maktinta brought to the build.
Complex Problem Solved
Maktinta delivers design-build solar thermal systems that remove friction for builders in a timely and budget friendly manner.
Proof of Capability
Successfully executed in Los Angeles, one of the most challenging regulatory markets.
Strategic Partner
Positions builders like Portrait Construction to win bids and deliver long-term sustainability for residents.
