Solar Service ,Home Solar Panels
Written by Lisa Walsh

Poly Vs Mono Panels for Residential Solar Installations

IfSolar Service, Home Solar Panels,Commercial Solar Service ,Annapolis MD – like most educated consumers – you’re getting multiple quotes for your solar power installation, you’re probably having to compare between various equipment offerings by your solar vendors. Themostprominent of these offerings – both in terms of financial investment and warranty security –are the solar panels themselves.

Solar panels come in a variety of power ratings. For residential applications, the most popular panels today usually fall somewhere between 270 watts and 315 watts, with price points that usually increase with the wattage (in the standard size footprint). Less obvious, however, is the type of solar panel you may be asked to choose between.

In general, your solar quote will include a panel whose cells are made from crystalline silicon. Silicon is us

ed in solar panels not necessarily because it’s the most optimum semi-conductor available – but because of the extensive research on the processing and physics of silicon grown out of the integrated circuit industry. The processes used to access and arrange the silicon determine whether a panel is deemed to be

As the name suggests, monocrystalline panels utilize a single, continuous crystal structure in the processing of the silicon ingots from which the solar cells are made. It used to be that this high-grade silicon resulted in substantially higher efficiency rates than other solar panels. However, improvements to manufacturing in polysilicon processes have closed this gap significantly. Still, homes and businesses looking for the highest possible efficiency rating on a solar panel would likely choose a Mono panel.

The silicon ingots used for manufacturing the solar cells for Poly panels are manufactured by melting many fragments of silicon together to form the ingot. Because this results in many crystals in each cell, there is usually less freedom for the electrons to move. As a result, polycrystalline solar panels typically have lower efficiency ratings than monocrystalline panels.

Should I choose a Mono or Poly solar panel?

As with any choice it comes down to buyer preference:

Aesthetics: In general, Mono panels have more options if you are concerned with how your solar panels will look. If you want something low-profile; maybe a uniform, all-black aesthetic devoid of white lines, silver racking and diamonds – most manufacturers offer this aesthetic in a Mono panel. However, there are now a few poly panels available in all-black. For example, REC has a 280-watt poly panel on the market that is now available in all-black.

Cost:  Mono panels tend to cost more than poly panels. A small roof looking to get the highest possible solar fraction by going with a high wattage solar panel will most likely end up with a Mono panel as these include the highest wattage options (300w plus). However, if a homeowner has the roof space and is looking for the highest possible value, it may be most cost-effective expand the array by one or two more panels and go with a Poly. Many commercial applications utilize poly panels due to the focus on cost over aesthetics, particularly if the panels are not visible from the ground, due to a flat roof installation.

Performance:  Due to the amount of information out there disparaging efficacy of poly panels compared to monos, this is a subject worth broaching. It is true that under factory test conditions, poly solar panels tend to have slightly lower heat tolerance than monocrystalline solar panels. As a result, under high temperatures, poly panels would perform slightly worse than their mono counterparts. Heat can affect the production performance of solar panels and shorten their lifespans. However, this effect is minor, and most homeowners do not need to take it into account. This is evidenced by the standard 25 year manufacturer’s warranty is the same for both mono and poly panels.

Residential Solar Panels S,olar Service
Written by Lisa Walsh

Solar Financing via Maryland’s Be Smart Loan Program

Residential Solar ,Panels Solar ServiceSolar Energy Services, Inc. recently became an approved contractor with the Be SMART Home Loan Program. This State of Maryland financing vehicle offers unsecured loans of up to $30,000 at a 4.99% interest rate. Aimed towards Maryland residents looking to lower utility costs, improve energy efficiency and add value to their Maryland home. The following solar projects qualify:

Solar Electric (Photovoltaic) Systems

These grid-tied solar systems give homeowners the option of purchasing more than 25yr worth of electricity at a fraction of the cost of their “rented” utility rates. Systems are purchase outright, and are eligible for the multiple financial incentives currently available.

Solar Water Heating (Thermal)

These systems are entirely separate from solar electric (PV) systems. They are most cost-effective for a Maryland family of 4 or more who currently heats their home’s water with electric, propane or oil. They require a relatively small amount of roof space and the upfront investment is lower than solar electric.

What are the Loan Qualifications and requirements?

  • Maryland resident
  • Home Owner
  • Verification of income
  • Credit score over 640
  • Debt-to-income ratio below 50%
  • Completion of a home energy audit

There is up to $30,000 in financing available for eligible homeowners.

What other upgrades qualify for the Be Smart Loan program?

Other qualifying energy efficiency upgrades throughout the home could include: energy efficient roof replacement, geothermal system, air infiltration reduction measures, increased insulation, hot water system improvements, heating systems maintenance or replacement, programmable thermostats, ceiling fans, windows, doors, duct work and energy star appliance replacement.

Can any Contractor perform the work?

Contractors must be listed on the State of Maryland’s Approved Contractor List as found here: http://dhcd.maryland.gov/Residents/Documents/besmart/BeSMARTApprovedContractors.pdf

How do I Apply?

  1. 1. Schedule a solar site visit with Solar Energy Services, Inc.
  2. Submit the Be Smart Home Loan Application along with SES’s proposal of work to be performed
  3. Be SMART will processes your Home loan application. Approval is based on your proposal specifications, satisfactory credit and affordability
  4. Submit your Home Energy Audit from an Approved Contractor
  5. You receive Loan Approval along with the first of two project pay-outs
  6. Upon receipt of payment, your Be SMART Contractor, SES, moves forward with interconnection, permitting and subsequent solar panel installation.
  7. The final payment is provided by DHCD when the work is complete and a DHCD inspector confirms that the work meets specifications

MORE INFORMATION

CONTACT: BeSMART Home Loan Program

Community Development Administration

Maryland Department of Housing and Community Development

E: BeSmartHome.dhcd@maryland.gov​

P: 301-429-7402 ​​​​

Or

info@solarsaves.net

410-923-6090

Residential Solar Panels ,Solar Service
Written by Lisa Walsh

Question of the Day: Will the new Administration affect my Solar Incentives?

Should we be concerned about the new Republican Administration and the future of Solar Power?

Solar Energy, Residential Solar Panels ,Solar ServiceDue to its tremendous growth, popular appeal, and ever improving economics, solar power enjoys increasingly bi-partisan support on the Hill and in Governors offices around the country.  Due to this, we predict very little, if any, impact on solar growth from the current Administration and/or a Republican Congress.  To help explain this, let’s look at the three main drivers of successful solar economics for the typical solar consumer – Federal Tax Credit, SRECs, and cost of solar equipment:

Federal Tax Credit:  30% of system cost.  This has been an enormously successful tax incentive enabling wide scale deployment of solar on both a utility and distributed scale.  Economies of scale have helped to drive the cost of solar; while further increasing demand – allowing the solar industry to grow exponentially.  This has been applauded by both major political parties for the private capital investment opportunities and huge job growth in the solar sector.   In fact, the US solar industry currently employs more people than the US oil, gas, and coal industries combined.

The 30% solar investment tax credit (ITC) was extended by Congress (many of whom were Republican) in late 2015 and is designed to decline in future years to eventually fall back to a permanent 10%.  The ITC schedule from the December 2015 legislation is as follows:

2016 – 2019: The tax credit remains at 30 percent of the cost of the system. This means that in 2017, you can still get a major discounted price for your solar panel system.

2020: Owners of new residential and commercial solar can deduct 26 percent of the cost of the system from their taxes.

2021: Owners of new residential and commercial solar can deduct 22 percent of the cost of the system from their taxes.

2022 onwards: Owners of new commercial solar energy systems can deduct 10 percent of the cost of the system from their taxes. There is no federal credit for residential solar energy systems.

In a nutshell, most in the solar industry believe it would be political suicide for the majority of congressional representatives to vote for a repeal of this enormously successful Investment Tax Credit that is scheduled to decline anyway.  There are too many solar jobs and solar projects in Republican districts for the majority of Republicans to consider advocating for repeal.  The horse is out of the barn and solar is winning!

SRECs: Maryland and Washington DC offer Solar Renewable Energy Credits to solarized homes and businesses.  This is a State/District-mandated incentive that, if anything, shows signs of expanding among the 29 States that have currently adopted an RPS (Renewable Portfolio Standard).  This is largely due to the fact that State Houses wish to support the exponential renewable energy sector job growth amidst the scheduled, declining Federal Support.

Solar Technology Costs:  Advancing technology, manufacturing scale, high adoption rates, and investor confidence in solar technology continue to drive down solar project costs.  We don’t see this momentum changing anytime soon.

Written by Lisa Walsh

First Community Solar Project in Washington DC

PRESS RELEASE

For Immediate Release

Tuesday, January 10th 2017

 

Father/Daughter Team Up for DC’s First Community Solar Project

WASHINGTON DC:  January 10th, 2017.  DC Resident Rebecca Mann and her father Neal Mann are poised to be the FIRST two PEPCO customers to take advantage of Washington DC’s newly revised and adopted Community Renewable Energy Facilities of 2016 (CREF).  After a process lasting three years, the District has finally worked out all of the kinks that enable D.C. residents to benefit from solar, even if they can’t put panels on their own roof.  Community solar offers the benefit of solar to community members (subscribers) who can’t, or prefer not to, install solar panels on their homes. This also gives renters an option to purchase solar power.

For the flagship project, Rebecca Mann is unable to install a solar power system due to limited roof space and shading constraints.  Located one mile away – her father, Neal Mann, is currently having a 16.24kW grid-tied solar power system installed.  This will generate enough power to offset a good portion of both his own, as well as his subscribing daughter’s, PEPCO utility bill —  at full retail price.

The project is currently under construction and is poised to be interconnected and officially net-metered by the end of January 2017.

Solar Energy Services, Inc. is one of the region’s longest running solar installation companies.  Founder Roger Perry has been in the solar energy industry for over 35 years.  His partner, Rick Peters, is a current Board member and past President of MDV-SEIA.  Locally owned and operated, SES installs both residential and commercial solar PV (electric), as well as solar thermal (hot water) systems in Washington DC, Maryland and Virginia.

Useful Links

PEPCO’s Green Power Connection and CREF

History of Washington DC’s Community Solar

For further information, contact:

Lisa Walsh 

Solar Energy Services, Inc. 

410-923-6090 X304

443-253-6941 Direct

Lwalsh@solarsaves.net

Eastern Shore MD,Solar Service, Home Solar Panels
Written by Lisa Walsh

Non-South facing solar panel installs in Maryland, DC and Virginia

The Design

Eastern Shore ,MD,Solar Service, Home Solar PanelsWhen planning a solar panel system for your home, the first consideration for any solar designer is the tilt and orientation of your roof areas.  We need to know which roof(s) will ensure the most optimum solar output – which translates to the best Return on Investment.   For us here in Maryland, the most optimum solar roof orientation is Due South at 180 degrees.  Of course, not everyone has this perfectly oriented roof and our customer base consists of homes that have South, West, East and everything-in-between orientations.  Occasionally we even install on North-facing roofs if the pitch of the roof is low enough that panels are close to flat, or can be tilted southerly.

For homes that face East-West, you may be wondering which roof would best suited for solar.  This is a good question given the fact that the output of your solar panels is directly related to your Return on Investment and how quickly the panels can pay for themselves.

If either East or West favors a more Southerly angle, then that would likely be a more favorable roof.  Assuming that there aren’t issues related to shadingor obstructions caused by chimneys, vents, skylights and other roof-placed items.

If the house has a perfectly split East-West orientation, with all things equal – the next consideration would be roof angle; the lower the tilt (i.e. closer to horizontal) – the more solar energy will be generated over the course of the day.  If the tilt on either side is the same then we would usually favor the West facing side.   Here in Maryland, DC and Virginia we tend to have cloudier mornings, and sunnier afternoons going into dusk.  Therefore we want to capture the late afternoon sun (west facing) more than early morning sun (East facing).  Of course, should you happen to have a tree, chimney or other obstructing factor(s) on the West roof – we’d favor the East.

The Economics

Homeowners looking at an East-West installation often have concerns as to whether or not their system will be profitable enough, compared to its south-facing counterparts.    Disqualifiers for cost-effective solar systems include shading and limited available roof space.  Rarely, however, is a home found unsuitable due to a Non-Southerly facing roof alone.

To illustrate, following is a comparison of a 10kW system’s output respective to East, West and South facing orientations.  Data compiled using the National Renewable Energy Laboratory (NREL) weather data patterns for Baltimore, MD –

10kW system installed on a 20 degree pitched roof with zero shade

 SOUTH (180 degrees)WEST (270 degrees)EAST (90 degrees)
ANNUAL OUTPUT13,224kWh11,389kWh11,328 kWh
*Annual $avings$1853 per year$1594 per year$1586

*Savings based on a conservative $3.00/watt installation, and $0.14/watt BGE rate

Data from PV WATTS

As illustrated, although perfectly South would be ideal, the East and West orientations provide a competitive amount of solar and would add only a few months to the payback period.  If you were choosing between East and West (as opposed to installing on both), the difference is nominal.  The choice of which roof may come down to aesthetic preference, distance to utility meter and regional weather patterns.

solar energy, renewable,
Written by Rick Peters

PACE Solar Financing in Maryland and Washington DC

Typical Commercial Challenges

As veterans of the small commercial solar market in this region, we are very familiar with the challenges of financing solar energy systems to this group of property owners.  Small businesses want solar as much or more than any other market segment, but they are capital-constrained like no others so they need affordable financing.

Third party solar developers have been the answer for other markets.  They can easily finance large systems because the cost of assessing the applicant’s credit is well worth the return.  In the case of residential systems, they can use universal tools like credit scores to help manage their risk.  For the small commercial and non-profit market, there hasn’t been a super-attractive  way to finance solar, until now!

Commercial Solar Systems Now Recognized as Public Benefit

Washington DC and Maryland now have laws and programs in place for commercial (and nonprofit) property owners to utilize PACE.  Property Assessed Clean Energy (PACE) is a vehicle that is used to finance energy improvements for buildings.  It operates under the recognition that energy improvements are considered to be a public benefit.  As such, PACE uses the property tax as a vehicle to structure the financing payments – much like we would finance a sewer extension, but in this case specific to one property.

PACE is very appealing to property owners because they can add significant value to their building on a cash-flow-positive basis without personal guarantees or the application of additional debt to the balance sheet.  The financing payment must be less than the savings and it’s paid in the form of a special assessment on the property tax bill over the term of the financing arrangement (5-25 years at competitive rates).  Multiple energy improvements (i.e. lighting, solar, new roof) can be bundled into one financing package.

The best thing about this approach to financing solar is that the property owner will own the system, not a third party.  The property owner gets all of the benefits, including the energy savings, the substantial incentives, the marketing value, and the satisfaction.  All it costs them is the interest on the financing which pales in comparison to the savings.

More info is available on your webpage on our PACE webpage but you may just want to pick up the phone and call us to see if your property is eligible.

Solar Service ,Home Solar Panels
Written by Lisa Walsh

DC Property Owners: Big Hot Water load = Big Solar Incentives

Commercial Solar Service, Annapolis MD

A growing number of building owners, developers and condo associations in the District of Columbia have come to realize that their building happens to be located in the most solar-friendly city in the USA .  Solar contractors, investors and financing vehicles are falling over each other to get solar panels on District roofs and start generating  the lucrative solar renewable energy credits (SRECs).   Whether via Direct Purchase, or $0 solar leases – SRECs are undoubtedly the reason for the solar season in DC (more to follow on those below).

However, before you sign on the dotted line and fill your roof with a 25-year solar PV (electric) system, as offered by 9 out of 10 solar professionals, make sure that you’re not losing the opportunity to vastly increase your return on investment with a Solar Thermal System.

Solar Water Heating Feasibility

The pre-qualification for a Solar Thermal System involves three questions:

  1. Does your building have a substantial, daily (365 day) hot water need? (i.e. apartment building/condos, restaurant, laundry, brewery, health center)
  2. Does your building have a centralized water heating system (as opposed to individual units throughout the building)?
  3. Can the building accommodate additional storage tanks?

If you answered YES to these three questions you really (really) should first consider a Solar Water Heating system either before – or at a minimum – in tandem with, a solar PV system.  (Shopper Beware – unless your solar contact has experience with solar thermal – which many do not – you’re going to have to be prepared to shop further).

What is Solar Water Heating (or Solar Thermal)?

Other than using the sun for energy generation, Solar Water Heating Systems operate entirely differently from their electron-shaking PV counterparts.  These time-tested, technologically mature systems are mechanical in nature and relatively simple.

Moreover, a solar thermal panel is 60 – 70% efficient; whereas a solar PV (electric) panel is typically 17 – 24% efficient.  Therefore, solar thermal panels generate substantially more energy per square foot than PV panels,  monetizing many more SRECs.

Solar Service , Home Solar Panels, Solar Renewable Energy

 

Let’s Review SRECs…

SRECs (Solar Renewable Energy Credits) – along with the 30% Federal Tax Credit and 100% Year 1 depreciation– are what drive the tremendous economic benefits of solar in Washington DC; one of several jurisdictions that have enacted a Renewable Portfolio Standard requiring that a specific percentage of electricity consumed must come from solar.   Whether residential, commercial, or institutional, each time a solar system generates 1 Megawatt hour of energy – the solar system owner generates 1 SREC.  This SREC is then sold via aggregators to an SREC market where it is bought by competitive energy suppliers to allow them to meet their share of the compliance obligation, or else pay a legislated fine (Alternative Compliance Payment, or ACP) for every SREC they are short.  Washington DC currently generates the highest SREC values in the country, largely due to the fact that DC does not have the real estate to install large solar farms which can rapidly oversupply a market and drive down SREC prices.

How much are SRECs Worth?

Washington DC SRECs are currently trading at $395/SREC.  To provide a frame of reference, a 6000 sq ft rooftop in Washington DC outfitted with a 75kW solar PV (electric) system could generate around 90 SRECs/year (over $35,000/year).   Depending on variables such as system size, corporate tax rate and and project site attributes, this SREC income – combined with a 30% Federal Tax Credit and 100% Year 1 depreciation, typically result in IRR’s between 30% – 60% and a Simple payback of 3 – 5 years.    Assuming solar thermal is applicable, this same roof outfitted with a Solar Thermal System could fit a kWh equivalent of a 150kW+ system, generating 180 SRECs/year – and see an IRR of 50 – 80%, with a simple payback in the 1 – 2 year range.

Solar Service ,Home Solar Panels, Residential Solar PanelsMaintenance

Although Solar PV (electric) clients often opt for an O & M (operations and maintenance) contract through their solar installer, Solar PV Systems  have relatively minor maintenance needs; usually an annual inspection along with ongoing monitoring.    Solar thermal (water heating) requires a little more maintenance including a 3 – 5 yearly service which, at a minimum, includes a replacement of the propylene glycol/energy transfer fluid that can degrade with time.  Nonetheless, the impact of service costs on the overall IRR is relatively small and easily absorbed by the increased SREC income.

Written by Lisa Walsh

A Primer on Solar Power

Did you know that attempts to harness the sun’s power through the development of solar cells dates back to the late 1800’s? I am sure that this, and other information, may be new to our readers. This article will provide you with some basic facts about solar power and solar energy. That way, you can join the conversation, and the renewable energy movement!

  • The first successful solar cell was developed in the early 1950s. It was made of silicon, and able to power small electronic devices. This was hailed as the beginning of a new era of energy resources, even then being acknowledged as having the potential to offer a limitless supply of electricity.
  • The first true application of solar cells could be found in the space program at NASA and in Russia. They were the only ones who could afford this technology in the 1960s.
  • The cost of solar cells continued to decline incrementally, but not so significantly that solar was a common source of energy through the 1970s. But, as the 1980s dawned, and ever since, solar power has insinuated itself into all aspects of life, commercially and residentially.
  • The first solar panels for buildings were developed in the early 1970s. In truth, this initial foray into the potential for large scale residential solar power was actually a solar array built into a rooftop. Panel development followed, as the cost and manufacturing efficiency increased.
  • President Jimmy Carter had solar panels placed on the roof of the White House in 1979. Everyone was getting into the act!
  • Welcome to 2018. Today it is common to find solar-powered cars, solar-powered telecommunications, and even solar-powered aircraft. One car company, renowned for their progressiveness, has incorporated solar panels into the roofs of their vehicles!

But, there’s more! Technology continues to expand the horizons of solar energy, making it affordable and applicable in new ways and new places. For example, it is possible that eventually solar panels on rooftops will be replaced with solar shingles!

Or, consider this, a solar fabric is being finalized that can be attached to houses as a cooling device!

We here at Solar Energy Services are excited about the future applications of this renewable source of energy for personal and commercial uses. You can count on us to utilize our superior knowledge and expertise to your advantage. We look forward to serving you!

Residential Solar Panels, Solar Service
Written by Lisa Walsh

Coming Up! Solar Open House in Ellicott City, MD

SOLAR OPEN HOUSE with Kirk Cummings

Residential Solar Panels, Solar Service , InstallerWHEN:  Sat, Sept 17th 2016   |   2pm – 5pm

WHERE:  4919 Windpower Way, Ellicott City  MD  21403

Nothing says Sunshine’s a Wastin! like a freshly installed solar power system.  Join Kirk at this Howard County residence to get up-close-and-personal with an active solar system.  The homeowner will be on hand to answer questions about their decision-making process as well as working with SES.

Kirk will be on hand to tour the system with you and answer all of your questions onsite at the home of the Syed Family where Kirk designed and SES recently installed an 8.55k Solar power system including(30) Suniva 285 watt Solar panels and a Solar Edge Inverter System.

Solar Open House – $250 Discount!

All open house attendees who sign up for a proposal and sign their contract within 30 days will receive a $250 discount on their PV system installation.

solar energy, Solar Service ,Home Solar Panels,
Written by Rick Peters

Press Release: Solar at the Chesapeake Bay Foundation

Press Statement
6-15-15

Solar Service, Home Solar Panels, Chesapeake MDCBF Merrill Center to Install 106 kW Solar System

(ANNAPOLIS, MD) The Chesapeake Bay Foundation (CBF) and Solar Energy Services, Inc. (SES) announced an agreement today for SES to design and build a 106 kW, grid-tied solar photovoltaic system at the Philip Merrill Environmental Center, CBF’s headquarters.

The Merrill Center rooftop solar system will include more than 370 solar panels from US manufacturer SolarWorld, as well as inverter systems from Solar Edge. The panels will be installed primarily on the available roof tops, but the design also calls for some unique solar shade structures to provide additional benefits to the facility and its occupants.

SES president Rick Peters shared that SES is pleased to participate in this marquee project. “I know personally that CBF has led the way on sustainable initiatives in our region for a very long time. It is an honor to be selected to construct this project, which will help advance CBF’s message and their environmental stewardship.”

The solar system is projected to produce more than 133 MWh of electricity annually, enough to power more than 10 average Maryland homes. This will significantly offset the facility’s consumption of traditional electricity.

“While we have had solar panels at the Merrill Center in the past, we are adding this new capacity because it is now more affordable as well as more efficient,” said CBF Vice President Mary Tod Winchester. “The new array will generate enough electricity to provide one third of the power for heating, cooling, and other needs of the more than 100 staff who work here. As a non-profit, we will not benefit from the many tax incentives available, but we encourage other individuals and businesses to closely examine the costs and benefits of adding solar generation.”

The project is expected to be completed before the end of this summer.

About Solar Energy Services, Inc.

Solar Energy Services, Inc. (solarsaves.net) designs, builds and services solar power systems for institutional, commercial, and residential customers. The firm was founded by 37 year solar industry veteran Roger Perry who has longstanding ties to the communities served by SES. Based in Millersville Maryland, the 21 person firm operates in Maryland, DC, and Virginia.

About Chesapeake Bay Foundation

Founded in 1967, the Chesapeake Bay Foundation (www.cbf.org) is the largest independent conservation organization dedicated solely to saving the Bay. Serving as a watchdog, we fight for effective, science-based solutions to the pollution degrading the Chesapeake Bay and its rivers and streams. Our motto, “Save the Bay,” is a regional rallying cry for pollution reduction throughout the Chesapeake’s six-state, 64,000-square-mile watershed, which is home to more than 17 million people and 3,000 species of plants and animals.With offices in Maryland, Virginia, Pennsylvania and the District of Columbia and 15 field centers, CBF leads the way in restoring the Bay and its rivers and streams. Over the last four decades, we have created broad understanding of the Bay’s poor health, engaged public leaders in making commitments to restore the Chesapeake, and fought successfully to create a new approach to cleanup that features real accountability-the Chesapeake Clean Water Blueprint

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