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rebcantwell
May 10, 2021
In Energy Tips
As utilities move to Time of Use rates that charge more in the weekday afternoons and evenings, you will have more control over your electric bills. Below are some ways you can change your lifestyle to take advantage of these rates. CHEAP COST : The cheapest energy is using NO energy. You can avoid using energy by: 1) Hang your clothes on the drying rack 2) Eat foods that don't require long oven and stove times 3) Use cold water for your laundry which will avoid re-heating the water in your hot water tank 4) Keep the refrigerator door closed 5) Keep lights off (however LED lights use very little electricity) 6) Use a laptop computer (17 watts) instead of a Desktop computer (200 watts) 7) Add insulative foam panels to the back sides of your refrigerator “freezer” (not over the refrigerator portion where heating escapes) 8) Place warning signs around the kitchen for reminders of new habits 9) Ensure front and back doors and all windows are closed 10) Open shades on the south side of the house in the winter and close the shades on the shaded side 11) Don't use any resistive heating if possible, You can turn on your oven with the door slightly open but set a timer for safety 12) Inspect and add weather stripping around front door 13) Caulk leaks around windows, 14) Add “outside” thermometers on four sides of the house to become aware when to close windows and save heat in the house 15) Use motion sensors on wall switches and a time on the bathroom fan 16) Provide training to all household occupants for new habits 17) Use light wall colors to reflect light rather than dark colors which absorb light, 18) Purchase a Kill-a-Watt meter for $25 and measure the watts used by your refrigerator (about 100 watts), TV (70 watts), computer, toaster, lamps, etc. It is fun to educate yourself. 19) Use a TV antenna and do not use an always-on Cable TV box 20) Close doors and heater ducts to rooms that are not used 21) Replace the furnace air-filters for better flow 22) Free Education = Attend You Tube webinars from CRES, attend CRES meetings. www.cres-energy.org LIST OF DELAYED ACTIONS UNTIL CHEAP RATES start: 1) Delay EV charging, 2) Delay dishwasher, 3) Delay laundry and drying, 4) Delay Hybrid hot water, 5) Delay cooking, 6) Vacuum the carpet only during cheap times (vacuums pull a lot of power) 7) Delay using a Hair-dryer (1300 – 1500 watts) MEDIUM COST: 1) Join a Community Solar Project to buy electricity from a shared solar array 2) Purchase energy monitors to learn which circuits are using the most power 3) Install Sun tunnels for natural lighting 4) Install storm windows as a second layer to your windows https://thinkalpen.com/products/winsert-introduction/ 5) Add a glass screen door to protect your main door from low temperatures 6) Replace LED lights that are 5 years old with brand new LEDs because today’s LEDs are more efficient than 5 year old LEDs due to technology advancements 7) Replace any refrigerator older than 2004 with an E-Star rated refrigerator (1/4 the watts) 8) Get an energy audit, https://hvacree.net/xcel-co/public_search.cfm 9) Have Xcel Energy service your home with new LEDs https://xehomeenergysquadco.as.me/schedule.php STEEP COST: 1) Get a Rheem Hybrid hot water tank $1200 and do NOT use the instant On-Demand hot water 2) Add roof top solar energy - both electric and hot water 3) Add PV Battery back up 4) Replace widows but insist on a LOW U value Example= U0.12 to U0.16 windows 5) Add thick insulation and dense-pack Insulation in your walls above ground and basement 6) Add heating with Hot Air panels 7) Add Automatic shades inside and outside 8) Add Heat-Pump Mini splits of high SEER >40, high HSPF =15 and a high COP Coefficient of Performance >4 to 1 energy multiplier TEST QUESTION: All of the above savings and inconveniences are not necessary if your PV system generates surplus electricity? FALSE! The rates of TOU will charge high rates during the early evening hours even when there is no sun. If you install energy storage through a battery backup system, you can draw power during the high electricity rate period.
From Cheap to Steep: 
Managing Energy Use with Time-of- Use Rates
By John Avenson
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rebcantwell
Apr 02, 2021
In Energy Tips
BY: John E Avenson avenson1@hotmail.com Westminster CO. There are several options available when considering Solar PV (PhotoVoltaics) for your home: HISTORY: Starting January of 2006, Colorado began the huge state rebate program for PV which triggered low prices enabling many folks to invest in PV for the very first time. In 2021, these old systems have seen a few forms of degradation. The following happened to my house: 1) The squirrels chewed through my cables on the roof and this had to be repaired, 2) The Power Inverter failed just a few months after the warranty expired and it had to be replaced. 3) NREL came to inspect my panels as part of a study to determine the average annual degradation of Solar PV collection efficiency. Their study showed that the average yearly reduction was 0.7% of the original rating. My old Sayo panels depreciated by 0.6% per year. My old 2006 panels were only 170 watts per panel. Today I have a brand new system using 400 watt panels. SO! What do you do with the old PV system? It is still working but I had outgrown its capacity due to purchasing more modern luxuries plus I added an Electric Vehicle which requires more capacity of an additional 3 KW system to the house load. 1) CHEAPEST: Option 1: The cheapest way to get your first Solar PV system is: My PV installation company offered to remove and take away the old system and deliver it to folks who want to purchase an old used system. My old 4KW sold for $2400 and the company packed it up and delivered it to the new owner. Today, many folks are upgrading their old PV systems. Perhaps you can put in a request to several PV installation companies and reserve an old second hand system for your home. 2) MEDIUM: PV panels have greatly reduced in price since 2006. New panels have individual optimizers that allow the array to fully operate even when there is a shadow on one or a few panels caused by a roof gable or tree. A new 4K system may be only $10,000 compared to 2006 when I paid $34,000 but with a huge rebate of $21,000. Today’s panels are so cheap that you can afford to place them on the east, west, and north sides of a roof in addition to the optimum south side. 3) EXPENSIVE: This past February the snow storm put stress on the Xcel power grid and my neighborhood lost power EIGHT TIMES in two days. I ordered a BATTERY BACK-UP system in addition to my new panels. A battery backup is more complex, involving a lot of wiring at the breaker box to customize which breakers I want to prioritize and remain on when the neighborhood goes out. I choose the keep the circuit that runs the house Internet, the lights in each bathroom, the kitchen lights, refrigerator and garage lights. PS: Your Credit Union has low interest rates to finance Renewable energy upgrades. The photo above is a graph of one day events for charging with Sun and clouds: 14KW system.
From Cheap to Steep: Solar Energy Options for Your Home content media
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rebcantwell
Mar 05, 2021
In Energy Tips
RESILIENCE: able to withstand or recover quickly from difficult conditions. This is a wonderful definition for how we want our homes to behave in bad weather and therefore be sustainable with the ultimate power of Mother Nature. The FEBRUARY TEXAS EVENT has shown how vulnerable our homes are in unpredictable weather. Plugging holes is the first and easiest step to staying comfortable, preventing frozen water pipes and reducing energy consumption. Only after that, can we consider adding expensive big-box items like replacing an old furnace, windows, or adding PV panels. Finally, Battery Back-up is becoming cheaper, but as long as the electrical grid is reliable, it is the last on the list for big ticket items to add. STEP ONE: Self Motivation! Within my power I can start with my own free labor: 1) Add Weather stripping to my front door, (no daylight should shine through the top or bottom corners), 2) Caulk the Electrical boxes to stop drafts: the rear holes for wires and the front perimeter to the sheetrock for all electrical boxes 3) Annually walk around the house exterior looking for and fixing any obvious holes and leaks (siding, windows, chimney, foundation, pipe holes etc.) (Use Weather proof tapes and caulk) 4) Search the house for Spider webs! Spider webs trap food to eat, and they will be located at air drafts, an indication of a two-way highway for little insects, up to snakes and mice. (Cans of Expanding Spray foam work well for these holes. If the weather is cold, heat the can up in hot water first.) STEP TWO: Hire an Energy Audit of my home. Refer to the Xcel Energy website for a list of the best companies. https://hvacree.net/xcel-co/public_search.cfm Xcel constantly checks the quality of these companies. Stick with your energy auditor as he/she walks around the house and learn what is of interest to them. DON’T BE SHY! They love to educate. STEP THREE: Read your Energy Audit summary. This is a list of the lowest hanging fruit to fix. The costs of action items will range from free stuff to expensive. JOURNEY: You and I are now on our way to a more sustainable and resilient community against the coming trends of bad weather due to global warming. Refer to this cheap book for more:
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rebcantwell
Feb 06, 2021
In Energy Tips
Getting it off my chest: Growing up in the 1950s, I observed that society thought they had conquered Mother Nature and could build homes anywhere they wanted with fossil fuel heat used to make up for the deficiencies of poor orientation, construction methods and insulation of homes. Retail stores “magically” stayed warm despite huge glass store front windows. Since then, multiple generations of future children still believe in this “fossil fuel magic” as evidenced that the public still buys homes with large windows on the north, east and west and R13 walls that defy Mother Nature ( Earth’s rotation around the sun.) ``PeakOil” was once forecast to start running out around 2010 but fracking has extended our supply of fossil fuel for a couple more decades which gives us further “grace period” to be educated. Today, inexpensive PV solar panels provide free electricity for heating our homes and for free transportation. Solar Thermal Panels (water/liquid) also provide a source of warmth to the home. Solar Thermal Panels require pipes running from the panels on the roof, down to a hot water tank. Panels, whether on the roof, mounted on the ground or in a shared Community Solar array, mean we can consider electrifying our homes and remove any fossil fuel burning units, including gas Hot Water Heaters. A Home Energy Auditor will advise on the amount of BTU heating you need to keep warm on a zero degree day. See a List of auditors at Xcel https://hvacree.net/xcel-co/public_search_proc.cfm Itemizing winter Electrical heating From Cheap to Steep: 1) CHEAPEST: Electric base board heating and store-bought plug-in floor standing heaters are really low cost. Marketing folks go wild selling many fancy variations of the same basic electric heating coil - oil- based, reflector- based, fan- based etc. as if one is better than another. Heating coils are a one-to-one use of OHMs law. You only get 1 watt of heating for 1 watt used. 2) BETTER HEATING: A HEAT PUMP can act as both an air conditioner and a furnace. HOW? Let’s use some of those watts from example 1 to suck the heat energy out of the outside air and bring it into our home. REASON: Any air that is warmer than “Absolute Zero” (-459F or -273C) has energy to be had. In the winter, with a Condenser/compressor unit outside the house, Refrigerant fluid turns to cold gas at about minus 40F and therefore -17F is pretty warm by comparison. Minus 17 to the cold condenser can collect a lot of heat into the gas and send that heat into the home as hot fluid. These “better” units are cheap units with low efficiency ratings of 20 year old design with Seer levels of only 13 -16 and HSPF of 7 - 11. 3) BEST HEATING EFFICIENCY: Ground Source Heat pumps are the most efficient and have a direct conduction of energy from the dirt to their pipes buried up to 300 feet into the ground. But drilling the holes can cost $20,000, plus you must have room in your yard to drill. Air to Air heat pumps are cheap by comparison and sit on the ground outside of your house with a cassette hanging on the inside wall. Air to Air Heat pumps must exchange heat using many fins touching the air outside. Heat pumps are rated by “Work done per WATT USED” and are 3 to 4 times more efficient than electric baseboard or plug-in heating. RATINGS: SEER (Seasonal energy Efficiency Ratio) is mainly used to represent cooling efficiency ranging from CHEAP TO STEEP SEER 13 to SEER 42 where 42 is the best so far and a more expensive unit due to precise design. HSPF (Heating Seasonal Performance Factor) ranges from 7 to 15 where 15 is the best so far. In warmer climates a higher SEER is more important and HSPF is most important for Heating climates a. All manufactures will “still” supply cheap units and more expensive highly rated units. b. HVAC contractors will sell you the cheapest units and make off with your money in their pockets to buy a bigger Camper and boat. c. MOST HVAC contractors and sales folks (from my interview experience) are not aware of the existence of the highest rated units. IT IS THE RESPONSIBILITY OF THE HOMEOWNER to demand the high rated SEER /HSPF models. Until Homeowners are educated, the HVAC industry will keep selling their cheap units to you. 4) REFERENCES ABOUT BEST HEAT PUMPS: Consumers Reports has a summary of terminology for Heat pump rating, however it is somewhat out of date and written before the latest units were available: https://www.consumerreports.org/cro/heat-pumps/buying- guide/index.htm#:~:text=The%20minimum%20federal%20HSPF%20rating,15%20SEER%20and%20 8.5%20HSPF. CARRIER: INFINITY SERIES = SEER 42 / HSPF 15, Heating down to -17F and reduced to 75% at - 22F https://www.consumerreports.org/cro/heat-pumps/buying- guide/index.htm#:~:text=The%20minimum%20federal%20HSPF%20rating,15%20SEER%20and%20 8.5%20HSPF Mitsubishi: MSZ-FH06NA = SEER 33 / HSPF 13.5 Heating down to ?? https://www.mitsubishicomfort.com/products/indoor-units/wall-mounted-heating-and- cooling/compare/results FUJITSU: Halcyon RLS3Y XLTH Extra Low = SEER 33 / HSPF ?? Heating down to -15F https://www.fujitsugeneral.com/us/resources/pdf/support/downloads/halcyon-2020-full-line- brochure-02.pdf
FROM CHEAP TO STEEP: Moving to Electric Heat
By John Avenson content media
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