61 Oakwood Ave Sudbury Deep Energy Retrofit

Residential - January 2012

NGrid Deep Energy Retrofit project is expected to be net zero when fully on-line in the Fall, 2012

Quick Facts

Average Annual Savings

$3,500

Net Investment

$250,000

Return on Investment

Property

Owner:: Robert Morrison / Deborah Wolozin
Type:: Residential
Address:: 61 Oakwood Avenue`, Sudbury, MA 01776
Size:: 2,800 sq ft
Designations:: Deep energy retrofit
Event Participation:: NESEA Green Buildings Open House 2012 Host; NESEA Green Buildings Open House 2013 Host

Technology

Type:: Energy Efficiency
Installed:: January 2012

Financial Details

Gross Cost of System:: $300,000
Value of Rebates:: $50,000
Net Cost of System:: $250,000
Annual Savings:: $3,500
Annual Revenue:: $1,500
Own or Lease:: Cash Purchase

Professionals & Suppliers

Products:: SolarWorld
Installers:: Synergy Construction LLC
Builders:: Synergy LLC/October Engineering LLC
Energy Auditors:: NGrid/Building Science Corp

What You Need to Know

Description:

Deep Energy Retrofit in NGrid DER Pilot program project renovation and expansion of a single family home. Mechanical system includes premium efficiency forced hot water heating (Bosch Greenstar), 4-zone air source heat pumps (Mitsubishi) and heat recovery ventilation system (FanTech). 5.76kW solar photovoltaic system installed by AstrumSolar

Maintenance Requirements:

the systems are yet to be fully operational

Efficiency or Sustainability Improvements:

closed cell spray foam and rigid board foam insulation, R41 walls, R62 roof, R30 foundation walls, extremely low air leakage rate

My Motivation:

the need for sustainability

Advice:

advise careful review of general contractors

Experience with Installer:

bad experience with the original DER general contractor; good experience with the replacement DER general contractor

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