Renewable energy engineering for complex power systems

Design, commissioning, controls, and diagnostics for solar, battery storage, and microgrids that have to keep running.

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0+ MW Designed and permitted
0+ Projects completed
0+ yrs Renewable energy experience

Engineering, commissioning, controls, and diagnostics

We help clients design, deploy, validate, and optimize renewable energy systems that have to perform reliably in the real world.

01

Engineering and design

Technical design support for renewable energy systems ranging from rooftop solar to complex site-wide infrastructure.

  • PV system design and plan sets
  • Battery storage integration
  • Off-grid and hybrid system engineering
  • Permitting and construction documentation
02

Commissioning and diagnostics

Specialized support for complex installations that need proper validation, troubleshooting, and performance assurance.

  • Tesla Megapack commissioning
  • Powerpack diagnostics and reconfiguration
  • Performance validation and fault resolution
  • Root cause analysis on underperforming sites
03

Inspections and safety reports

Independent assessment of installed systems, documented to a standard that holds up with AHJs, insurers, and owners.

  • Third-party inspection reports
  • Code compliance and NFPA 855 review
  • Arc flash and electrical safety assessment
  • Condition reports for acquisition and insurance
04

Controls and monitoring

Automation and operational intelligence for energy infrastructure that needs better visibility and tighter control.

  • PLC programming and automation logic
  • SCADA integration and remote monitoring
  • Custom load management strategies
  • Real-time system optimization
05

Microgrid intelligence

Smarter control for multi-source power systems using the GridBrain platform built in house at X10.

  • Hardware-agnostic microgrid management
  • Predictive analytics and event visibility
  • Automated dispatch and load control
  • Operational insight for long-term performance
06

Feasibility and pro forma reports

The numbers behind the decision: whether a project works technically, and whether it works financially, before anyone commits capital.

  • Technical and site feasibility studies
  • Pro forma financial modeling
  • Production estimates and utility rate analysis
  • Incentive, ITC, and payback assessment

Built for projects that need real engineering depth

X10 is not a generic solar installer. We work where design, commissioning, controls, and long-term reliability actually decide the outcome.

Developers and owners

Engineering support that carries a project from concept through commissioning without gaps in accountability.

Facilities and campuses

Solar plus storage and resilient backup systems for sites that cannot afford to sit in the dark.

Microgrid operators

Multiple sources, mixed loads, and dozens of monitoring devices brought under one coherent control strategy.

Storage asset owners

Specialized Megapack and Powerpack expertise, from firmware workflows to fault diagnosis in the field.

GridBrain

Intelligent control for modern microgrids

GridBrain extends X10 engineering with real-time monitoring, predictive analytics, and automated control for complex microgrid environments. Hardware agnostic, built from field experience.

Learn more about GridBrain

Featured projects across Hawaii

Where X10 engineering, controls, and commissioning experience made a measurable difference.

01 / 06Kahauiki Village
OahuOff-grid villageMicrogrid controls

Kahauiki Village

Integrated GridBrain monitoring, predictive power management, load control, and billing across a low-income off-grid village.

Controls strategy, monitoring, predictive management, operational visibility
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02 / 06Daniel K. Akaka State Veterans Home
InstitutionalSolar + MegapackNew construction

Daniel K. Akaka State Veterans Home

Engineering support for a photovoltaic and Tesla Megapack system delivering resilient, clean energy to a critical care facility.

Renewable energy integration and battery storage support
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03 / 06Hale Kupuna Heritage Home
KauaiRetirement complexLoad switching

Hale Kupuna Heritage Home

Solved chronic outage issues with a custom off-grid system and load switching strategy that improved reliability and expanded usable service.

Off-grid engineering, controls, power reliability
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04 / 06La'au Pono
Big IslandHybrid facilityBackup power

La'au Pono

Moved a whole-site backup system off diesel dependence toward quieter, renewable-backed power infrastructure.

System engineering, backup strategy, site-wide transition
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05 / 06Hale Mauliola
Community impactDonated microgridEnergy access

Hale Mauliola

Designed and donated a microgrid that brought reliable electricity to a community previously living without power access.

Engineering, system design, community implementation
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06 / 06Ola Ka ʻIlima Artspace Lofts
High-riseCustom hardwareRooftop PV

Ola Ka ʻIlima Artspace Lofts

Engineered custom PV mounting hardware for a rooftop installation with challenging geometry and tight design constraints.

Solar engineering and custom structural mounting design
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"Jeff's threshold for multi-tasking and producing high-quality work is unmatched."
Adam Meier Sustainability Manager, Harvard University

Technical leadership with field experience

Engineering, field execution, project management, and operations support, moving complex renewable work from concept to real-world performance.

Jeff Lang

Jeff Lang

Owner / Electrical Engineer

NABCEP-certified in design and installation with 20+ years in renewable energy. Projects across NY, TN, HI, OR, and internationally.

Steve Freiberger

Steve Freiberger

Tech / Journeyman Electrician

Certified across major renewable equipment brands, with deep field experience in installation support and commissioning.

Jay Lynse

Jay Lynse

CAD / Engineering

Turns complex project requirements into efficient, buildable designs.

Briana O'Leary

Briana O'Leary

Administrator

Keeps operations, communication, and coordination running on schedule.

David Dubois

David Dubois

Project Management

Structure and communication for projects where timing and coordination matter.

From assessment to long-term performance

Assess

Review the site, system, constraints, and operational goals to define the right technical path.

Engineer

Develop the design, controls strategy, documentation, and implementation plan.

Commission

Validate installation quality, system behavior, and integration logic before handoff.

Optimize

Monitor, troubleshoot, and improve operation through controls, analytics, and diagnostics.

Have a system that needs to work?

New build, stubborn fault, or a microgrid that needs better control. Tell us the situation and we will tell you the right next step.

Talk to an engineer