Three green schools What can be done by Stow? By Norm Farris & Ellen Sturgis 27 November 2006

Dedham Middle School ► Built 2005 ► Capacity ~750; already have 750 ► $26 million ► $800,000 in green grants, aid ► Replaces outdated 1920 school ► Add/reno for 1920 school deemed too costly ► MTC, etc refund; 100% reimbursement for green innovations

Green innovations ► Photovoltaics ► Rainwater collection system  50K cistern and 3000 gallon tank inside  Used for all toilets/urinals ► Photo-sensor controlled lights ► Daylighting ► Low VOC tiles/materials ► Recycled building materials ► State of the art HVAC systems with monitoring

Super-efficient high efficiency condensing boiler

Entryway: maximize natural light

Hallways use skylights for natural lighting

Classrooms have light-sensitive controls on overhead lights

Not a green feature! But this is a common solution to a full size gym needed for multiple classrooms

Carlton Elementary, Salem ► New construction on existing site; Replaced outdated poorly-constructed/designed 1952 school ► Capacity: 300 ► K-Grade 5 plus pre-school (Headstart) ► Enrollment: 300 kids (150 are city Headstart) ► Construction cost: $10 million ► Significant tie in of green construction to curriculum

Green innovations ► Photosensor lights ► Light collecting skylights ► Double-glazed windows ► Photovoltaics ► Wind turbine ► Recyclable lunch materials ► MTC funding ► SBA refund – 90% of construction cost

Carleton-Science room Natural light; efficient electric lights

Greenhouse ► Photovoltaics on roof glazing ► Main banks on roof

Gymnasium Gymnasium ► Illuminated by natural light ► Prismatic skylights capture ambient light ► No lights on!

Light-collecting skylights for gym Also note roof white to limit heat absorption

Natural light in cafetorium

Centerville Elementary, Beverly 2002 ► Add/reno of 1964 school ► Town didn’t want cost of new school ► Capacity: 300 ► K- Grade 5 ► Enrollment: 300 kids ► Construction cost: $9 million ► New wing built, gutted restored old wing ► Done in one year kids moved to another school

Green innovations ► Motion detector controlled lights ► Ambient light compensating lights ► Clerestory in new wing ► Double-glazed windows ► Photovoltaics ► Wind turbine

Green innovations, cont. ► Photovoltaics – supply part of power (enough for lights) ► Wind turbine – in wrong location; doesn’t supply power ► MTC funding ► SBA refund – 85% of construction cost

Solar panels on new wing with clerestory underneath Centerville/Beverly

Clerestory in new wing halls

Library w/ reading nook on left created out of former courtyard

Reading center similar to Center School

From Greening America’s Schools report Another example of a clerestory – not from this school

Green innovations to consider ► Daylighting ( skylights, clerestory, interior, siting, etc ) ► High efficiency lighting systems ► Efficient building shell ► High efficiency HVAC systems ► Non-toxic, recycled and locally produced building materials ► Water saving/recycling/groundwater systems ► Renewable energy systems ( solar, wind and geothermal )

Advantage - Savings ► Schools report substantial cost savings in utilities cost ► MTC funding allowed payback in ~3 years ► Absent MTC funding? In the case of Salem school 7 years

Advantage – Environmental quality ► Air circulation reduces bad air, asthma, absenteeism ► Daylighting improves attendance, learning scores, absenteeism ► Improved teacher satisfaction, retention

From Greening America’s Schools; Kats October 2006

Questions? ► Who pays for it?  No current MTC funding  Municipal utility not currently involved in MTC programs ► Too complex a building process? Adding layers of coord., design and oversight could increase risk ► Was it built right? Commissioning advised ► Is the building too complex to run? What additional training/maintenance is needed to run a green building? ► Will it push back our timeline? ► Capital vs operating costs/savings

Resources ► NEEP ► MTC – Energy/green_schools.htm Energy/green_schools.htmwww.masstech.org/Renewable Energy/green_schools.htm ► Daylighting in Schools – ► High performance schools: Affordable Green Design for K-12 Schools –