by jboullion | Jan 12, 2010 | Uncategorized
From a news release issued by Bubbling Springs Solar:
MENOMONIE, WIS. – Bubbling Springs Solar will join with Organic Valley, a farmer-owned cooperative of more than 1,300 organic family farmers nationwide in La Farge, Wis., to provide discounted bulk purchase rates for solar thermal collectors. This collaboration will help make solar energy affordable to their member farmers, and employees. Additionally, Organic Valley is currently working with Wisconsin’s Focus On Energy to assess the feasibility of installing Bubbling Springs’ flat plate collectors at one of their facilities in La Farge.
“We are extremely excited to work with Bubbling Springs Solar on this joint venture. Organic Valley and our farmer owners recognize the potential of harnessing the sun, both for the environment and for our bottom line. We remain committed to lowering our carbon footprint and believe clean, renewable energy generated on site is a cornerstone to achieving this goal,” said Jennifer Harrison, Sustainability Program Manager, Organic Valley.
Bubbling Springs Solar is dedicated to providing manufacturing jobs in Wisconsin and to making high-quality solar thermal collectors readily available to the growing customer base in the upper Midwest. Bubbling Springs Solar collectors have been created in line with strong values for both renewable energy and for environmentally friendly manufacturing. Organic Valley is also a mission-driven organization that has grown dramatically since their inception as a small, organic farmer cooperative in 1988. Now the organization has more than 1,300 member farmers in 33 U.S. states and Canada that produce award-winning products, including milk, eggs, juice, soy and produce, and a full range of meat products under the Organic Prairie label.
by jboullion | Jan 8, 2010 | Uncategorized
From a news release issued by Governor Jim Doyle:
MADISON – Governor Jim Doyle today was joined by business leaders, labor, legislators and environmental organizations as he launched the Clean Energy Jobs Act, a landmark legislative package to accelerate the state’s green economy and create jobs. New industry-recognized research shows the package will directly create at least 15,000 green jobs in Wisconsin by 2025.
“Addressing climate change is not just an environmental issue, it’s about creating green jobs,” Governor Doyle said.
“The Clean Energy Jobs Act offers new standards to help accelerate Wisconsin’s green economy. I am calling on the Legislature to update renewable portfolio standards to generate 25 percent of our fuel from renewable sources by 2025 and set a realistic goal of a 2 percent annual reduction in energy consumption by 2015.”
The Clean Energy Jobs Act, State Senate Bill 450 and State Assembly Bill 649, implements the recommendations of Governor Doyle’s Global Warming Task Force to address climate change and grow the state’s green economy through several key measures:
• Enhanced renewable portfolio standards – A new 20 percent standard would be set for 2020 and a 25 percent standard would be set for 2025. The current 10 percent standard would be accelerated from 2015 to 2013. By advancing our current renewable portfolio standards, and setting new standards, we will ensure more of our energy dollars stay in the state, creating thousands of jobs for Wisconsin families in fields like construction, manufacturing, and agriculture.
• Enhanced energy efficiency and conservation efforts – Graduated statewide electricity savings goals would be set, leading up to a 2 percent reduction by 2015 and annual reductions thereafter. The cheapest way to lower carbon emissions is through energy conservation. By setting achievable conservation goals, this bill will help reduce energy costs in businesses and homes across the state.
A comprehensive economic assessment of the Clean Energy Jobs Act found that the package would directly create at least 15,000 green jobs in Wisconsin by 2025. More than 1,800 jobs would be created in the first year alone. The assessment also found that between 800 and 1,800 construction jobs would be created each year from 2011-2025, and more than 2,000 manufacturing jobs would be created once the laws are fully implemented.
Michael Vickerman, RENEW Wisconsin’s executive director said:
Wisconsin’s existing 10% Renewable Energy Standard has driven significant investment in rural, forestry and agriculture markets by encouraging the construction of large wind, biogas, biomass and solar projects. Increasing the Renewable Energy Standard to 25% in 2025 would continue to generate more of the lucrative payments to landowners and biofuel / biomass providers as well as create more jobs constructing and maintaining the additional projects are built to meet the new standards.
The bills also include three of the proposals backed by the Homegrown Renewable Energy Campaign:
• Renewable Energy Buyback Rates, also called an Advanced Renewable Tariffs, would set utility payments for small renewable energy producers who want to “feed energy” into the electric grid, enabling farmers and rural businesses to help Wisconsin become more energy independent with biopower, wind and solar.
• The Biomass Crop Reserve Program would award contracts to farmers to plant native perennial plants, which the farmer can then sell for bioenergy production, helping to solve the chicken-and-egg problem of jumpstarting the homegrown fuels market.
• A Low-Carbon Fuel Standard would be a market-based approach to promoting the cleanest, low-carbon fuels for Wisconsin, and would put Wisconsin in a position to capture the rapidly-developing clean energy market by using Wisconsin’s abundant natural resources like switchgrass.
Statements of support for the legislation came from Customers First!, WPPI Energy, CREWE, Clean Wisconsin, ACRE, MEUW, Sierra Club, and others.
by jboullion | Dec 31, 2009 | Uncategorized
Though written in 2007, an analysis by RENEW’s executive director Michael Vickerman may be even truer today an a few years ago, given the risk involved in “traditional” investments. The analysis shows that an investmnet in a solar hot water system generates a better rate of return than putting money in the bank:
I wrote a column which was highly critical of using payback analysis to figure out whether installing a solar hot water system on one’s house makes economic sense. In almost every example you can imagine, the payback period for today’s solar installations ranges between long and forever. For my system, which started operating in January 2006, payback will be achieved in a mere 19 years using today’s energy prices, though by the time 2025 rolls around, half of Florida might be under water and the rest of the country out of natural gas.
But there’s no reason to let payback length rule one’s ability to invest in sustainable energy for the home or business, especially if there are other approaches to valuing important economic decisions. One way to sidestep the gloomy verdicts of payback analysis is to do what most companies do when contemplating a long-term investment like solar energy — calculate the internal rate of return (IRR) on the invested capital. The definition of IRR is the annualized effective compounded return rate which can be earned on the invested capital, i.e. the yield on the investment.
By using this familiar capital budgeting method, I’m able to calculate an IRR of 6.1%for my solar water heater if natural gas prices rise a measly 3% per annum. That yield exceeds anything that a bank will offer you today. It will likely outperform the stock market this year, which is due for a substantial downward adjustment to reflect the slow-motion implosion of the housing market now underway. And, unless you live in a gold-rush community like Fort McMurray, Alberta, your house will do well just to hold onto its current valuation, let alone appreciate by six percent.
While all investments pose some degree of risk, the return on a solar energy system is about as safe and predictable as, well, the rising sun. Fortunately for the Earth and its varied inhabitants, the center of our solar system is situated well beyond the reach of humanity’s capacity to tamper with a good thing.
by jboullion | Dec 18, 2009 | Uncategorized
By Michael Vickerman, RENEW Wisconsin
As a result of educating themselves on the connection between energy use and atmospheric pollution, several school districts in Wisconsin are taking increasingly aggressive steps to conserve energy as well as produce a portion of what they use on-site. Some have embraced ground source heat pump systems (Fond du Lac High School), while others have installed solar hot water systems (Osceola Middle School) and solar electric systems (Paul Olson elementary school in Madison). Not to be outdone, Wausau East High School recently installed a 100 kilowatt (kW) Northwind turbine, which is now the largest wind generator attached to a school building in Wisconsin.
Yet if one measures success by substantial reductions in energy expenditures and emissions reductions, there is one school district in Wisconsin that stands head and shoulders above its peers: Fort Atkinson. Serving 2,700 school-age children in a community of 12,000, the Fort Atkinson School District operates six buildings: four elementary schools, one middle school and a high school. School officials have made no secret of their aspiration to make Fort Atkinson the most energy-efficient and self-sufficient K-12 district in the state.
Since 2005, Fort Atkinson has rigorously pursued a sustainable energy agenda that integrates, in a systematic and complementary fashion, continuous monitoring of consumption, aggressive building efficiency measures, and renewable energy capture. As articulated in its 2009 energy plan, the district’s principal goals for 2010 are nothing if not ambitious:
Pare energy costs by 20% from 2005 levels;
Lower carbon emissions by 25% from 2005 levels;
Obtain EnergyStar certification for all six schools; and
Install on-site renewable production at all six schools.
Virtually every renewable energy technology or efficiency measure available to a Wisconsin K-12 district has already been or is about to be deployed somewhere in Fort Atkinson. This lengthy list includes ground source heat pumps, solar hot water systems, lighting retrofits, tankless water heaters, retro-commissioning, occupancy sensors, window replacement, and roof insulation. On the district’s 2010 installation list are a 50 kW wind generator at the high school and a 20 kW solar electric system at Purdy elementary school.
The integrated approach pursued by Fort Atkinson leads to lower operating expenses, which in turn frees up capital for renewable technologies that have higher up-front costs but will deliver energy to the school buildings long after the initial investment is paid off. At the same time, converting sunlight and wind into useful energy sources enable building owners to reduce the variability of their utility costs. For a school district, that means not having to worry about the effect of a colder-than-normal winter on next year’s budget for textbooks.
The solar water heating systems serving the high school and the middle school neatly illustrate this benefit. The radiant energy striking the rooftop panels year-round is efficiently collected and taken inside to preheat the swimming pools in each building. Except during the winter months, the incoming solar energy is sufficient to maintain pool temperatures at 84°F. Even in January, however, the savings that a solar hot water system yields simply by preheating a pool to 70°F is substantial when multiplied over several decades.
The capital required to heat a swimming pool with solar energy is not trivial. For the 48-panel system atop the high school, the installed cost totaled $192,000, while the 32-panel installation serving the middle school came in at $115,000. Dennis Kuchenmeister, who manages the district’s buildings and grounds, estimates a 5% return on investment (ROI) for the high school’s system and an 11% ROI on the middle school’s system. According to Kuchenmeister, the hot water systems will supply about 60% of the heat going into the pools, displacing the equivalent of nearly 9,000 therms a year. The district expects to save $18,000 in avoided fuel costs per year.
Kuchenmeister’s economic estimates factor in incentives from Focus on Energy covering up to 35% of the total installed cost and matching incentives from We Energies, the local utility serving the school district. By taking full advantage of available incentive dollars, the school district was able to reduce the out-of-pocket portion of installation costs by more than 50%.
Because the annual harvest of solar energy striking a particular spot rarely fluctuates by more than 10%, a building owner can be reasonably confident of how much conventional energy an installation will displace. In contrast, the cost of heating a pool with natural gas can easily triple during a 12-month period even when usage remains constant. This in fact happened to Fort Atkinson in the 12 months preceding the installation of its two solar hot water systems in the fall of 2008.
Thus, the real value of Fort Atkinson’s solar hot water installations is in minimizing the district’s exposure to the price volatility associated with unregulated fossil fuels like natural gas. And while it’s true that natural gas prices are presently at five-year lows, they could easily bounce back to 2008 levels in a year or two, depending on events over which end-users have no control. However, by installing a renewable technology that preheats their swimming pools, Fort Atkinson has effectively insured itself against a repeat appearance of the fossil fuel rollercoaster ride that most school districts would just as soon forget.
There are two other reasons why school buildings are well-matched for solar energy installations. First, the buildings themselves are dedicated to a public function that is expected to last for several generations. In such settings it is easier to justify the additional up-fronts costs, especially if the installation also communicates a valuable lesson in sustainability to the entire community. Second, most schools, especially newer ones, have an abundance of flat, unshaded roof space that can support large arrays, irrespective of building orientation.
Real-time production data from both installations can be accessed online by visiting www.fatspaniel.net and searching for the live sites listed under We Energies. The district also uses Energy Watchdog, a web-based program provided by Focus on Energy to track energy usage. This program enables Fort Atkinson to document the energy and cost reductions from measures specified in its energy plan.
The middle school is also one of four schools in Fort Atkinson equipped with ground source heat pump systems that heat and cool the buildings year-round using the nearly constant temperatures in the ground. These systems heat buildings in the winter and cool them in the summer. Ground source heat pump systems are electrically powered; no heating fuel like natural gas or propane is needed to heat the four schools.
“We essentially cut the gas line to our schools,” said Kuchenmeister during a presentation on his district’s sustainable energy initiative last November in Milwaukee.
The operational costs of ground source heat pumps are substantially lower than the HVAC systems they replace. As a result of their renovation, the three elementary schools have seen their energy intensity drop by more than one-half, even though they now have air-conditioning in the classrooms. School officials estimate that all four ground source heat pump systems will save the district $90,000 annually in fuel costs.
As with solar hot water systems, Focus on Energy provides incentives for ground source heat pumps to schools, businesses and residences. The program awarded more than $96,000 towards the four systems installed in Fort Atkinson.
According to a Focus on Energy fact sheet, “a ground source heat pump system is arguably the most efficient technology for heating and cooling Wisconsin homes and businesses.” Given its embrace of that technology and others deployed in its buildings, Fort Atkinson has become, in terms of energy sustainability, arguably the most forward-thinking school district in the state.
RENEW Wisconsin (www.renewwisconsin.org) is an independent, nonprofit 501(c)(3) organization based in Madison that acts as a catalyst to advance a sustainable energy future through public policy and private sector initiatives. Michael Vickerman has been the organization’s executive director since 1991.
Solar Hot Water Systems – Fact Sheet
Fort Atkinson School District
Full Service Installers
Andy DeRocher
Mark O’Neal
Full Spectrum Solar
100 South Baldwin Street, Suite 101
Madison, WI 53703
Phone: 608.284.9495
info@fullspectrumsolar.com
www.fullspectrumsolar.com
Types of system installations:
Solar hot water, solar electric
Service Territory:
150 miles
At-A-Glance – High School SHW System
Collector space: 1,920 sq. ft (48 4’x10′ panels)
Panel manufacturer: Heliodyne Gobi
Tilt angle: 45 degrees
Annual fuel savings: 8,539 therms assuming 80% efficient gas boilers
Avoided CO2 emissions: 47 tons/year
Pool Size: 4,200 sq. ft.
Preheated water volume: 188,227 gallons
Pool operating temperature: 80°F
Incoming water temperature: 55°F
Installation cost: $192,000
Focus on Energy Incentive: $50,000
We Energies match: $50,000
System payback: 10 ¾ years
Installation date: Fall 2008
At-A-Glance – Middle School SHW System
Collector space: 1,280 sq. ft (32 4’x10′ panels)
Panel manufacturer: Heliodyne Gobi
Tilt angle: 45 degrees
Annual fuel savings: 8,763 therms assuming 60% efficient gas boiler
Avoided CO2 emissions: 49 tons/year
Pool Size: 2,635 sq. ft.
Preheated water volume: 96,921 gallons
Pool operating temperature: 84°F
Incoming water temperature: 55°F
Installation cost: $115,000
Focus on Energy Incentive: $40,400
We Energies match: $40,400
System payback: 4 years
Installation date: Fall 2008
by jboullion | Dec 7, 2009 | Uncategorized
The solar water heating systems serve Fort Atkinson high school and the middle school. The radiant energy striking the rooftop panels year-round is efficiently collected and taken inside to preheat the swimming pools inside each structure. Except during the winter months, the incoming solar energy is sufficient to maintain pool temperatures at 84°F. Even in January, however, the savings that a solar hot water system yields simply by preheating a pool to 70°F is substantial when multiplied over several decades.
As a result of educating themselves on the connection between energy use and atmospheric pollution, several school districts in Wisconsin are taking increasingly aggressive steps to conserve energy as well as produce a portion of what they use on-site. Some have embraced ground source heat pump systems (Fond du Lac High School), while others have installed solar hot water systems (Osceola Middle School) and solar electric systems (Paul Olson elementary school in Madison). Not to be outdone, Wausau East High School recently installed a 100 kW Northwind turbine, which is now the largest wind generator attached to a school building in Wisconsin.
Yet if one measures success by substantial reductions in energy expenditures and emissions reductions, there is one school district in Wisconsin that stands head and shoulders above its peers: Fort Atkinson. Serving 2,700 school-age children in a community of 12,000, the Fort Atkinson School District operates six buildings: four elementary schools, one middle school and a high school. School officials have made no secret of their aspiration to make Fort Atkinson the most energy-efficient and self-sufficient K-12 district in the state.
Since 2005, Fort Atkinson has rigorously pursued a sustainable energy agenda that integrates, in a systematic and complementary fashion, continuous monitoring of consumption, aggressive building efficiency measures, and renewable energy capture. As articulated in its 2009 energy plan, the district, the district’s principal goals for 2010 are nothing if not ambitious:
+ Pare energy costs by 20% from 2005 levels;
+ Lower carbon emissions by 25% from 2005 levels;
+ Obtain EnergyStar certification for all six schools; and
+ Install on-site renewable production at all six schools.
Virtually every renewable energy technology or efficiency measure available to a Wisconsin K-12 district has already been or is about to be deployed somewhere in Fort Atkinson. This lengthy list includes ground source heat pumps, solar hot water systems, lighting retrofits, tankless water heaters, retro-commissioning, occupancy sensors, window replacement, and roof insulation. The most recent system to be installed, a 50 kilowatt wind turbine at the high school, will be operational by Christmas 2009.
The integrated approach pursued by Fort Atkinson leads to lower operating expenses, which in turn frees up capital for renewable technologies that have higher up-front costs but will deliver energy to the school buildings long after the initial investment is paid off. At the same time, converting sunlight and wind into useful energy sources enable building owners to reduce the variability of their utility costs. For a school district, that means not having to worry about the effect of a colder-than-normal winter on next year’s budget for textbooks.
The solar water heating systems serving the high school and the middle school neatly illustrate this benefit. The radiant energy striking the rooftop panels year-round is efficiently collected and taken inside to preheat the swimming pools inside each structure. Except during the winter months, the incoming solar energy is sufficient to maintain pool temperatures at 84°F. Even in January, however, the savings that a solar hot water system yields simply by preheating a pool to 70°F is substantial when multiplied over several decades.
The capital required to heat a swimming pool with solar energy is not trivial. For the 48-panel system atop the high school, the installed cost totaled $198,000, while the 32-panel installation serving the middle school came in at $115,000. Dennis Kuchenmeister, who manages the district’s buildings and grounds, estimates a 5% return on investment (ROI) for the high school’s system and an 11% ROI on the middle school’s system. According to Kuchenmeister, the hot water systems will supply about 60% of the heat going into the pools, displacing the equivalent of nearly 9,000 therms a year. The district expects to save $18,000 in avoided fuel costs per year.
Kuchenmeister’s economic estimates factor in incentives from Focus on Energy covering up to 35% of the total installed cost and matching incentives from We Energies, the local utility serving the school district. By taking full advantage of available incentive dollars, the school district was able to reduce the out-of-pocket portion of installation costs by more than 50%.
Because the annual harvest of solar energy striking a particular spot rarely fluctuates by more than 10%, a building owner can be reasonably confident of how much conventional energy an installation will displace. In contrast, the cost of heating a pool with natural gas can easily triple during a 12-month period even when usage remains constant. This in fact happened to Fort Atkinson in the 12 months preceding the installation of its two solar hot water systems in the fall of 2008.
Thus, the real value of Fort Atkinson’s solar hot water installations is in minimizing the district’s exposure to the price volatility associated with unregulated fossil fuels like natural gas. And while it’s true that natural gas prices are presently at five-year lows, they could easily bounce back to 2008 levels in a year or two, depending on events over which end-users have no control. However, by installing a renewable technology that preheats their swimming pools, the Fort Atkinson has effectively insured itself against a repeat appearance of the fossil fuel rollercoaster ride that most school districts would just as soon forget.
There are two other reasons why school buildings are well-matched for solar energy installations. First, the buildings themselves are dedicated to a public function that is expected to last for several generations. In such settings it is easier to justify the additional up-fronts costs, especially if the installation also communicates a valuable lesson in sustainability to the entire community. Second, most schools, especially newer ones, have an abundance of flat, unshaded roof space that can support large arrays, irrespective of building orientation.
Real-time production data from both installations can be accessed online by visiting www.fatspaniel.net and searching for the live sites listed under We Energies. The district also uses Energy Watchdog, a web-based program provided by Focus on Energy to track energy usage. This program enables Fort Atkinson to document the energy and cost reductions from measures specified in its energy plan.
The middle school is also one of four schools in Fort Atkinson equipped with ground source heat pump systems that heat and cool the buildings year-round using the nearly constant temperatures in the ground. These systems heat buildings in the winter and cool them in the summer. Ground source heat pump systems are electrically powered; no heating fuel like natural gas or propane is needed to heat the four schools.
“We essentially cut the gas line to our schools,” said Kuchenmeister during a presentation on his district’s sustainable energy initiative last November in Milwaukee.
The operational costs of ground source heat pumps are substantially lower than the HVAC systems they replace. As a result of their renovation, the three elementary schools have seen their energy intensity drop by more than one-half, even though they now have air-conditioning in the classrooms. School officials estimate that all four ground source heat pump systems will save the district $30,000 annually in fuel costs.
As with solar hot water systems, Focus on Energy provides incentives for ground source heat pumps to schools, businesses and residences. The program awarded more than $96,000 towards the four systems installed in Fort Atkinson.
According to a Focus on Energy fact sheet, “a ground source heat pump system is arguably the most efficient technology for heating and cooling Wisconsin homes and businesses.” Given its embrace of that technology and others deployed in its buildings, Fort Atkinson has become, in terms of energy sustainability, arguably the most forward-thinking school district in the state.
