Lessons learned Green Energy Benny Farm · (514) 504-9030 | [email protected] Lessons learned Green Energy Benny Farm Alex Hill, MEng, LEED AP DUNSKY ENERGY CONSULTING May 28, 2012

www.dunsky.ca (514) 504-9030 | [email protected]

Lessons learned Green Energy Benny Farm

Alex Hill, MEng, LEED AP DUNSKY ENERGY CONSULTING

May 28, 2012

[ slide #3 ] www.dunsky.ca

DUNSKY OVERVIEW

SERVICES

Design and evaluation of programs, plans and policies

Strategic, regulatory and analytical support

New opportunities assessments

CLIENTS

Utilities

Government

Industry

Non-profits

(sample clients from among >100)

EXPERTISE

Energy Efficiency and Demand-Side Management

Renewable Energy and Emerging Technologies

Greenhouse Gas Reductions


Outline

Introduction to Benny Farm

The Greening the Infrastructure at Benny Farm Project

Installation of the integrated energy systems

The challenges faced

Lessons learned

Other Impacts

Lessons applied


A vision for a sustainable community Benny Farm Redevelopment EVBF, a community-owned

energy company


Greening the Infrastructure at Benny Farm

Salvaging Buildings Conserving Energy and Water


Renewable energy systems Ground exchange heat pump loops

Solar water heating and make-up air preheating


Initial Optimism Award-winning design – Holcim Foundation

District energy company as a model for long term sustainability

Globe and Mail, September 2005


The cold slap of reality

Innovative infrastructure faulty: needed redesign and rebuilding

Renovations and lowest cost contracting lead to significant deficiencies

Montreal Gazette, September 2007


Impact on energy budgets

0

1,000,000

2,000,000

3,000,000

4,000,000

5,000,000

6,000,000

EE4 referencebuilding

EE4 modelresults

Realconsumption

Av

era

ge

an

nu

al

co

nsu

mp

tio

n (

MJ)

Chez Soi NDG Natural gas

Electricity

Disappointing results from compounded factors

Initial energy budget estimates over-promised compared to results

Overly-optimistic model

Failure of GSHP and Solar array

System integration and controls

Lower performing measures

Occupant behavior


Manage the Risk and Return

New Building Institute, 2010

LEED building study results

Buildings completed to 2006

Overall positive results: 20-25% average energy savings

Scatter = risk

Most under performing are Gold-Platinum


Avoid the scatter – reduce the risk

Formulate your successful recipe of DSM measures and EE equipment

Invest upfront AND in maintenance to keep projects affordable

Pull together specialised servicing team

LEED silver and basic level projects can perform best

Ensure adequate access to modelling and quality control UPFRONT

Improve access to qualified commissioning and post occupancy servicing

Encourage high efficiency, but put emphasis on envelope and proven equipment

Be prepared for contingency funding on energy bills

Avoid innovation overload – pick measures strategically

Commissioning from day one to post-occupancy

Plan for affordable housing as a service, not just a commodity

Size your contingencies appropriately to the level of complexity

PORTFOLIOS PROGRAMS & POLICIES PROJECTS


How we solved our problems The district heating model was promising, but we required the right players

Accessed significant “rebuild” contingencies


Other EVBF Benefits EVBF created new opportunities to improve life for the residents

EVBF project important to furthering knowledge about green building technology


Applying the Learnings Coteau Vert and Un Toit Pour Tous

Cooperative 95 units

Non-profit Org 60 units


Blending active and passive approaches


More Lessons... Some envelope

improvement difficulties integrate in affordable housing

Commissioning Essential: In the development continuum M+M is weakest

Need a qualified central player to handle all systems in complex buildings

Rosemont combines some “winning” approaches: partial district heating with redundancies, hot water supply using central gas fired units


Thank you... QUESTIONS?

Alex Hill, MEng, LEED AP DUNSKY ENERGY CONSULTING

(514) 504 9030 x30 [email protected]

www.dunsky.ca

Lessons learned Green Energy Benny Farm · (514) 504-9030 | [email protected] Lessons learned Green Energy Benny Farm Alex Hill, MEng, LEED AP DUNSKY ENERGY CONSULTING May 28, 2012

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