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Energy in Curling Clubs
Ian MacLellan October 31, 2015
How You Are Charged • energy - ¢ per kilowatt hour • demand - $ per kilowatt of monthly peak - how you can tell if you have one • regulated charges
– Distribution, utility and debt retirement costs
• Global Adjustment – Contracts signed by the energy organization IESO
• OCEB – Ontario Clean Energy Benefit ending
Rate Categories
• You have choices & some are bad • If your club uses < 250,000 kWh / yr
–You’re on the Regulated Price Plan (RPP) –for homes, but also used for business
under 250,000 kWh per year • If your club uses > 250,000 kWh/yr
–Spot price plus the Global Adjustment
Time of Use Reg Price Plan (RPP)
Tiered Regulated Price Plan
Tiered RPP – with Demand
Spot Price or Contract Plus GA
Know Your Electricity System • Access data on your utility web site and monitor use • Plan when you turn the plant on / off • If not electronic, find out when your meter is read
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August September
Electricity Users
– Ice Plant • 8 sheets – 800 kWh per day - $ 112 • 6 sheets – 600 kWh per day - $ 84 • 4 sheets - 400 kWh per day - $ 56
– Shed Lighting - HID • 8 sheets – $ 32 • 6 sheets – $ 24 • 4 sheets - $ 16
How to Reduce Energy Costs
• Energy Conservation – do the cheap and boring stuff first – programmable thermostat on furnace – LED light bulbs everywhere possible, inclu exit sign
(coupons available on your utility’s web site)
– Weatherstrip around the doors to outside AND the doors to the ice shed
– Caulk around all windows / plumbing – Wrap water heater and pipes
Energy Conservation Incentives
–Small Business Lighting Program • Free up to $ 1,500, if under 50 kW • Contact your utility for eligibility • Current program ends Dec 31, 2015 • 2016 program will expand eligibility and $ cap, but will
require some investment
–Retrofit program – contact utility • For shed lighting retrofits. Incentives up to 25% • For control systems. Incentives up to 50%
Electricity Control
Ice Plant Control Systems
• Control systems save energy by – Making the ice warmer from 11pm to 6 am
• Saving electricity
– Making the shed cooler from 11 pm to 6 am • Saving gas and electricity
– Less heat has to be refrigerated away – Operating the brine pump only when necessary
with controls, and/or install a 2 speed brine pump • Saving on pump use and reducing heat added to brine
Night Setback
Control Systems
1. Do it manually – maybe – Turn ice temp up & shed temp down at 11 pm &
up at 6 am – depends on recovery capacity
2. Install timers and thermostats controls – Get your ice plant maintenance person to install
thermostats and timers on brine/ice/heaters
3. Install a custom control system – Varaxis (St Cath), AC Mechanical (Ottawa), Black
and MacDonald (Whitby ?)
Economics of Control System
• Electricity Cost Sept 2014 $ 5,770 • Cost of control system $ 17,000 • SaveOn Energy Incentive $ 8,500 • Net Cost of system $ 8,500 • Electricity Cost Sept 2015 $ 4,200 • Monthly Saving $ 1,570 • Annualized Saving > $ 10,000 • Payback Period 6 months
Lighting Retrofits
• Retrofit from HID or T12 fluorescent • Install T8/T5 fluorescent, LED, mag induction • Wire for less light during ice maintenance • Use dimmers with LED • SaveOn energy incentive for at least 25% • Payback is in the 2.5 – 4 year period
How to Get the Energy Incentive • SaveOnEnergy.ca or your utility • Apply BEFORE retrofitting anything • Lighting retrofits are “prescriptive”, and can be
through any contractor – 2-4 yr payback • Control systems are “custom” retrofits and
require before/after scenarios calculating the source of the savings – 8-16 month payback
• Look to Enbridge and Union Gas as well
Other Energy Saving Opportunities
• High efficiency or variable speed motors • Consider whether 24/7 ventilation in
washrooms/kitchens is necessary • Set the pebble water heater to 130 F and turn
it and other water heaters off in the summer • 2 inch thick ice costs 10% more than 1 inch ice • Check fridge/freezer for interior non-LED
lighting and gasket anti-sweat heater
Stuff People try to Sell You
• Dirty power cleaner, harmonics wave fixer – Will not save kWh, but will save a bit on kW demand – Might save 2-3%
• An electricity contract at far less than RPP – Avoid anything priced below 10 ¢/kWh which does not
mention Global Adjustment – Since curling clubs operate 7 days, 8 am to 11 pm, with
compressors on overnight, they are “good” loads
• A new, hugely more efficient water heater
Energy Prices
Electricity Price Components
• Regulated Charges 30 % • Energy Charges 70 %
– Market Price 30 % – Global Adjustment 70 %
• Average Market Price 2014-15 3.1 ¢/kWh • Forecast Market Price 2016 2.1 • Cost of a Retail Contract 3.9 • Cost of a Bulk Contract 3.5
