Zero Energy SIP House Stillwater MN

Location: Stillwater, MN

Project Information

Project Type: Residential, < 3,000 sq. ft.
Manufacturer: Energy Panel Structures
Builder: GreenSmith Builders
Design Professional: Roycroft Architecture
Year Built: 2024

Performance

High Performance: Yes
HERS/EUI Index Score: 16
ACH50 - Blower Test Results: 0.57
kBtu/sq.ft./year:
CO2 lbs./sq.ft./year:

Awards/Certifications: DOE Zero Energy Ready Home, ENERGY STAR Certified, EPA Indoor AirPLUS

BEA: 2025 Building Excellence Award - High Performance Winner

This single-family home was designed to meet rigorous energy efficiency and sustainability standards while providing a comfortable and healthy living space. The home achieves high performance through its use of Structural Insulated Panels (SIPs), advanced HVAC systems, and renewable energy integration, making it both eco-friendly and cost-effective.

A Sustainable Home, Built to Last

This single-family residence is a testament to sustainable living, designed to minimize environmental impact and maximize energy efficiency. By leveraging advanced building techniques, including Structural Insulated Panels (SIPs), this home provides a comfortable and healthy living environment while significantly reducing energy consumption.

The Power of SIPs

SIPs played a pivotal role in achieving the home's high-performance goals. Their superior thermal performance, airtight construction, and rapid installation significantly contributed to:

  • Energy Efficiency: A remarkable HERS Index of 16 (with solar) demonstrates exceptional energy performance.
  • Reduced Construction Time: Pre-manufactured SIPs accelerated the building process, saving time and labor costs.
  • Enhanced Durability: The airtight building envelope protects against moisture intrusion, mold, and pests.

Innovative Design and Engineering

  • Passive Solar Design: The home maximizes natural light and minimizes heat gain through strategic window placement and shading.
  • Advanced Air Sealing: Meticulous air sealing techniques ensure optimal energy efficiency and indoor air quality.
  • Water Management: A comprehensive water management system protects the home from water damage and reduces stormwater runoff.

Key Specifications

  • SIP Wall: 6 ½” SIPs with 5 5/8” EPS Foam core
  • SIP Roof: 12 ¼” SIPs with 11 3/8” EPS Foam core
  • HERS Index: 16 (with solar) / 37 (without solar)
  • ACH50: 0.57
  • HVAC: Air Source Heat Pump (9.4 HSPF2), Air Source Heat Pump (15.5 SEER2), Energy Recovery Ventilator (ERV)
  • Solar Panel: 30.7 kWh annual energy generation

Certifications and Features

  • ENERGY STAR® Certified Home
  • Zero Energy Ready Home
  • EPA Indoor airPLUS
  • Energy Star Certified Appliances and Lighting
  • Electric Vehicle Charging Station
  • Sustainable Landscaping

By combining cutting-edge technology with sustainable design principles, this home sets a new standard for energy-efficient and environmentally friendly living.

Affiliated Members

Energy Panel Structures, Inc.
Manufacturing
Graettinger, IA
GreenSmith Builders

MINNEAPOLIS, MN
Roycroft Design, LLC

Elk River, MN

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