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Annapolis, MD: Housing Authority Installs Solar Water Heating System

[vc_row][vc_column][vc_column_text]by Erin Cox:  The Baltimore Sun

At one of Annapolis’ public housing buildings last week, new solar panels on the roof collected energy to heat hot water for more than two dozen apartments below.[/vc_column_text][/vc_column][/vc_row]

Would that be One Tank or Two, madam?

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Solar veteran Roger Perry discusses the pros and cons of One Tank Vs Two for Solar Back-up

Commercial Solar Energy ,Residential Solar PanelsAll solar water heaters in Maryland, D.C. and the mid-atlantic provide a family of four with around 75% of their annual hot water load. Most customers use their existing electric or gas sources for the remaining 25% backup (usually needed dead winter). When installing a solar system one question that will come up is “Should I use my existing tank and have it fed by the solar system?” or “Should I remove my existing tank and use the electric back-up that comes in the solar tank?”. A couple of situations make this an easy decision;

  1. An existing electric water heater with no room for another tank. This is especially satisfying and cost effective if the existing tank is leaking or on it’s last legs. It’s like getting $1500 off the cost of a solar system because that money would have needed to be spent anyway. In this case you would definitely chose a single tank system.
  2. The other is if you have a gas water heater. While not as cut and dry as the example above, using the electric element would mean using a higher cost fuel for back-up (not so much with propane). Much of this extra cost would be mitigated because the single tank back-up would not run as much because it would be affected by solar input without running a faucet. You would need to run an electric circuit (30 amp, double pole breaker). This may be difficult or very easy depending on the breaker box location and available space in it. Most jurisdictions will also require a master electrician and a permit for this to be done. In this case, I think, most people would shy away from a single tank system unless there was just no room for another tank.

Let’s look at the pros and cons of each system;

SINGLE TANK PROS

  • Smaller footprint
  • Less heat loss
  • Electric element can sense the solar output and not come on from stand-by losses
  • Can go “all solar” just by turning off the element (essentially flipping a switch).

SINGLE TANK CONS

  • Less back-up in cloudy weather (can be compensated with a larger solar tank which will have a larger back-up capacity).
  • Less solar storage when the element is on (can be compensated for with a larger solar tank which will have more solar storage).

TWO TANK PROS

  • Usually greater back-up capacity

TWO TANK CONS

  • Greater heat loss
  • Larger footprint

The secondary backup tank can’t sense the primary solar tank temperature unless a faucet is turned on, sending the water through the two-tank system.  This causes the second tank to turn on from stand-by losses when the primary solar tank is already plenty hot.

Going all solar requires operating valves as well as turning off back-up.

Personally I’m a fan of single tank systems. For the most part their two main drawbacks can be compensated for by installing a larger tank. An upgrade from a 80 to a 120 gallon solar tank is only a few hundred dollars. For a 50% increase in solar storage it is a small price to pay.

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Going Solar? Top 10 Things to Consider…

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SES gives the skinny on going sunny

  1. Commercial Solar Energy ,Residential Solar ,Panels Solar Service1. Cut your Energy Losses
    In most homes, heating and cooling accounts for the most energy usage. Regardless of where your energy is coming from; gas, coal, solar, electric, wind, etc. a homeowner’s first consideration is to reduce the loss of incoming energy:
    â€Ē Replace old windows and doors with Energy Star products. This can reduce energy consumption by 7 – 15%.
    â€Ē Seal up any air leaks throughout the house, attic and basement.
    â€Ē Insulate! This blocks air loss in the winter and preserves cool air in the summer.
  2. Consider those Big Appliances
    Refrigerator:
    Keep the condenser coils clean. Keep refrigerator away from oven/washer/dryer and other heat producing appliances. Place with consideration to air circulation.
    Stove: Remember that gas is generally a more cost-effective choice than electric.
    Attic Fan: An excellent way of pushing hot air outside in the day, and drawing cool air at night.
  3. Need a new roof?
    If you think your roof may need repairing or replacing within the next 5 or so years –it may be worth replacing before the solar panels are installed. If you’re on the fence about replacing your roof prematurely, remember that installers such as SES do provide a Remove and Reinstall service where, for a reasonable fee, the panels will be safely removed then re-installed after re-roofing.
  4. Small Bite or Full Monty?
    Just about every solar energy company sells and installs Solar Electric (Photovoltaic) systems. However, solar water heaters are an entirely different type of solar panel and not every solar company installs them. Thus, not every solar company is likely to tout the cost-effectiveness of this mature technology. Solar water heaters require only a fraction of the roof space (and often a third of the cost) that a solar PV system requires. For a family of four, currently using electric to heat their home’s water – solar water heating may provide the biggest bang for your solar buck, providing around 75% of a home’s annual hot water. However, a family of two heating their water with gas may consider investing in a solar electric (PV) system sized for their usage. Insofar as solar electric (PV), many homeowners cover 60 – 100% of their electrical needs from solar. Some choose to offset as little as 25% and opt to add panels as their budget allows.
  5. READ your Energy Bill
    For electricity, your energy bill should tell you how many kilowatt hours you use per year. This is an important number as you generally do not want to install a system that will exceed your annual consumption. Experienced installers can help you assess this, but a good rule of thumb is to divide that number by 1200kwH and that will tell you the approximate max sized PV system you should consider. That will be represented in kW – probably something like 8 to 10 kW if you are an average consumer. If you heat your water with electric, then solar water heating should absolutely be considered first.
  6. Best way to pay for your solar system
    The beauty of an increased popularity in solar is that there are a number of ways a homeowner can finance their project. Without question, whether immediately or over time, Solar Power is far cheaper than your Utility bill.

Payment plans range from No-Money-Down leasing options to initial investments ranging from $2000 – $50,000 depending on your energy usage and type of solar system. Thanks to current financial incentives, many Marylanders receive over 50% of their upfront investment back the first year. Some of our customers have transferred funds from low yield CDs and even borrowed from 401ks in order to fund their higher-return solar investment. Other homeowners have no interest in ROI’s and fund-juggling and simply want a lowered electric bill/carbon footprint. Thankfully there is a wide variety of financing options available.

  • Know YOUR solar energy tax credits, grants and incentives
    Any solar salesperson worth his/her salt will visit your home with full knowledge of the available financial incentives for your state and county. For example, an Anne Arundel County resident has the good fortune of FOUR different financial incentives (for both PV AND solar water heating) that combine to offer a huge discount on their system. Acclimating yourself to current incentives for your county will help the sales process be much more informative for you. Every solar homeowner is eligible for a 30% Federal Tax Credit. Then SRECs (solar renewable energy credits), state grants, county tax credits differ across the region.
  • Solar Panel Placement
    Whether solar water heating or solar electric (PV), a south facing shade-free roof provides optimum conditions for solar panel placement. However, any shade-free roof – including East and West orientations provide excellent rooftops for solar panels. The number of panels installed depends upon system size, roof space and budget. Homeowners with a good amount of spare land may also consider ground-mounted systems, some of which offer solar tracking options where panels are mounted to motorized pole that literally follow the sun, improving solar efficiency by 40 – 45%.
  • How many solar panels on the roof?
    Insofar as solar water heating, a shade-free area of 64 square feet is typical to house two 4′ x 8′ solar thermal panels (sized to provide a family of four with around 75% of their annual hot water load). Most solar electric (PV) panels measure 3′ 6″ x 5′ 6″. So, a roof that is 30′ wide by 14′ from gutter to ridge will fit two rows of 9 panels. An experienced solar designer will get precise roof measurements and ensure the panels are placed in the most space-efficient and visually appealing design.
  • Choosing a solar energy installer
    Of course, the author of this blog would like to gleefully exclaim, “Choose Solar Energy Services!”. However, most educated consumers know that the best way of finding the best fit for an installer comes from shopping around for the popular 3 proposals/estimates. There are a lot of solar installers our there in today’s market. Some considerations:

 

Time in the Business: This matters. Obviously the more systems a licensed installer has installed – the more experience they’ve gained – and the more they’ve refined their installation technique. Just as important, however, is the question of whether the installer will be around in 5, 10 or 15 yrs when perhaps the incentives for solar have declined. An older company is likely to have deeper roots in the industry regardless of current solar trends and incentives. You want your installer to be around for the life of your system, 25 – 35 yrs plus. This narrows the field considerably.

Service Department: Solar Water Heaters require a 3 – 5 yr simple service visit. Does the installer provide this service?

All Options on the Table: A company who offers both leasing AND upfront purchase will likely lay ALL your options out on the table. This also goes for installers who offer both solar water heating AND solar electric.

There should not be a charge associated with a site evaluation of your home for solar energy. This is a necessary part of the sales process and should take place before the cost estimate/proposal is presented.

Happy Solar Shopping![/vc_column_text][/vc_column][/vc_row]

Solar Commissioned at Back River Waste Water Treatment Plant

[vc_row][vc_column][vc_column_text]ESSEX, MD:  Earlier this week NABCEF-certified Solar Energy Services, Inc. was engaged by Amber Enterprises, Inc. to provide the DC wiring installation at the newly installed 1MW solar application at Back River Waste Water Treatment Plant.

Johnson Controls, Inc. is the project manager of this 1MW solar photovoltaic system which has 4,116 ground-mounted, southerly-facing solar panels.  The 4,200 American-made panels, installed in the past three months at a cost of about $4 million, have begun to supply about 5 percent of the energy — up to 1,000 kilowatts per hour — needed to run the plant on Eastern Avenue.[/vc_column_text][/vc_column][/vc_row]

Solar Saves in Anne Arundel County

Pictured: Matt, Jessica and family in front of their newly installed solar hot water and solar electric systems.

The cost of the residential solar system has come down dramatically in the past five years. With 4 separate grants and incentives, Anne Arundel County residents are catching on.

LET THE SUNSHINE IN – Residential solar energy systems are being installed every day in Anne Arundel County where local business owners Roger Perry and Rick Peters are working hard to keep up with rising demand. Their rapidly growing 18 person firm, Solar Energy Services, Inc. (SES) installs and services solar electric, solar water heating, and solar pool heating systems in Maryland and DC, with the majority of their residential customers located within AA County. When asked why he thinks solar has taken off even in these tough times, SES president Rick Peters said there are many drivers, but economics lead the way. “Rising utility bills, decreasing cost of solar panels and generous financial incentives all combine to give homeowners the opportunity to pay off 25yrs worth of BGE energy in about 6 years, not to mention the environmental and societal benefits.”

One House – two solar systems:

Most solar shoppers are unaware that there are two types of solar energy for the home. Whole house solar electric, commonly referred to as PV (Photovoltaic), is what most people think of as solar energy. However, a solar water heater can offset 75% of your annual hot water energy. Roger Perry quickly points out that if you have a large sunny roof, there is plenty of room for both systems. He and Peters both have solar water heating and solar electric on their homes.

The clock is ticking…

Each of the 4 different substantial incentives for a residential property owner in Anne Arundel County currently has a limited life-span, with the idea that solar can be competitive without them in the future. Peters notes that the current average payback on a solar electric system is about 6 years, for a system that lasts 25 – 30 years. With solar hot water, a 4 year average payback with a similar system lifespan. The payback is even faster if you have a large family (lots of hot water use) or if you need to replace your water heater anyway. Rick Peters leaves us with some food for thought, “You can invest your money in a lot of different places these days, but most are very uncertain, or producing a very low return. On an annual basis, the return on solar energy is quite predictable, and the economic return is hard to beat with any financial investment strategy.”

TYPICAL 5kW SOLAR ELECTRIC (PV) SYSTEM
Estimated System Cost $27,500
Federal Tax Credit $8,250
MD State Grant $2,500
AA County Property Tax Credit @ 75% $1,875
SREC Payments $10,000
Total Incentives $22,625
Net Cost to Homeowner $4,875
Payback in Years 6.09 yrs
25 yr Annual Energy Savings +800 per year
25 yr Lifetime Return on Investment >250%

 

The Capital: Solar Power Expo 2011

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“Energy touches every aspect of our lives, from the cost of heating our homes to sustaining our resources for future generations.” O’Malley said. “We’re all here today because we understand that we are in a fight for our children’s future. Maryland is leading the nation’s efforts in clean energy and sustainability, and our state’s growing ‘green’ sector is vital to our ability to create jobs and compete globally in the new economy.”

The governor’s appearance, coupled with a growing vendor and visitor base, was seen by Lopez as a good sign.

“It’s good to see the governor is paying attention to these issues,” Lopez said. “The face that we have more than 500 people here shows the public is starting to take notice, as well. Now we just have to take the things we’ve learned and apply them. We need to make these things mainstream.”

One of the vendors was Millersville-based Solar Energy Services. Founded by Roger Perry in 2006, the company analyzes homes and installs solar panels for electricity, hot water and pool heaters, among other uses.

To heat enough water for an average family of four, Solar Energy Services installs two 4-foot by 8-foot solar panels at a cost of approximately $10,000, Perry said. But residents will receive Solar Renewable Energy Credits, along with other state and federal incentives, that will allow the panels to “pay for themselves” in just over two years, Perry said.

Both Perry and Solar Energy Services President Rick Peters say business has been exploding recently.

“We’re growing 80 percent a year, ” Peters said. “We’re growing and we just hired mroe people, so we’re also creating jobs.”

Another Millersville company, Kenergy Solar, also was at the expo. Though the company is only 2 years old, it already has installed solar panels throughout Anne Arundel and Montgomery counties, Coordinator Julia Sullivan said.

Sullivan praised O’Malley and the state’s legislators who are pushing for new, innovative renewable energy policies.

“They’re helping us create a sustainable industry,” Sullivan said.

Lopez is putting putting on another expo in Pennsylvania next month and hopes to eventually expand to Ohio, New York and beyond. He also hopes to add more to the expo in Timonium to a point where the parking lot is full of vendors and visitors alike, he said.

“We haven’t even scratched teh surface of what we can do.” Lopez said.

Maryland Energy Administration Director Malcolm Woolf shared similar sentiments.

“Maryland ahs emerged as a national leader in energy innovation, thanks to the smart choices we’ve made over the last five years,” Woolf said. “Today’s energy summit futher underscores Maryland’s commitment to accelerating our transition to a clean energy future.”

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