More Power to You!

A Resource Guide for Builders, Architects, & Engineers.

Information on renewable energy strategies, technology and products are finding their way into the signature blueprints of many new buildings, both small and large, residential and commercial. Opportunity also abounds for energy saving renovations of existing buildings.

Technology for daylighting, passive solar design, solar domestic hot water systems, solar process heat systems, building-integrated photovoltaics, and solar ventilation pre-heat are making a noteworthy impression on the preservation of our natural resources. Today's conservation efforts will continue to impact our planet for generations to come.

This resource guide is designed to give builders, architects and engineers sources for information and products regarding renewable resources for energy that are feasible, as well as economical.

Table of Contents

Building Energy Simulation Tools
Education and Training
General Information
Passive Solar/Residential and Commercial
Programs that Promote Renewables
Renewable Resource Data
Solar Thermal/Commercial
Solar Thermal/Domestic Hot Water
Ventilation Pre-Heat
Wind Power


Building Energy Simulation Tools


Building Energy Tools
Contact: Dru Crawley, Program Manager
P.O. Box 3048, Merrifield, VA 22116
(800) 363-3732 · TDD (800) 273-2957

Information about various computer tools available for analyzing daylighting , passive solar design, and solar systems are described. Information includes program uses, computer hardware required, price, and contact information.
(Engineers, Architects)

Designing Low-Energy Buildings/ENERGY-10
Passive Solar Industries Council
1511 K Street NW, Suite 600, Washington, DC 20005
(202) 628-7400 · (202) 393-5043 (fax)

The Passive Solar Strategies Handbook and the ENERGY-10 computer program are included in the Designing Low-Energy Buildings package. The Passive Solar Strategies Handbook covers basic principles of passive solar architecture, how to use the ENERGY-10 software to design a passive solar building, and a description of sixteen energy-efficient strategies that can be successfully applied to small commercial and residential buildings. The software and handbook were specifically developed to help architects incorporate passive solar and other energy techniques into small commercial and residential buildings.
(Architects, Engineers)




Best Applications:
All commercial buildings.

Advanced Buildings Website

This website describes over 60 environmentally-appropriate technologies for commercial buildings. Daylighting controls, lightpipes, and dimmable ballasts are among the technologies covered.
(Architects, Engineers)

Building Operating Management Online

This site includes several technical papers on dimming ballasts. It also includes listings of manufacturers of dimming ballasts and brief product descriptions.
(Engineers, Architects, Lighting Specifiers)

Daylighting Public Kiosk

This website provides general information on daylighting concepts, systems and strategies, and expected energy savings.


Lighting specifiers can find product information and sources for dimming ballasts and photocell controls on this internet site.
(Engineers, Architects, Lighting Specifiers)

The Lighting Center
Edge Enterprise
P.O. Box 270521, Flower Mound, TX 75027
(972) 874-2620 · (972) 874-2580 (fax)

Various manufacturers of dimming controls and ballasts can be accessed though this website.
(Engineers, Architects, Lighting Specifiers)

Lighting Design Forum

This internet site contains several case studies of effective, aesthetically pleasing, and energy-efficient lighting design. Many of the case studies cover daylighting features. The website also includes articles and reports on daylighting design solutions, manual vs. dimming controls, and directories of product manufacturers, and design professionals.

Tips for Daylighting
Buildings Technologies Program
Lawrence Berkeley National Laboratory

1 Cyclotron Rd., MS 90-3111, Berkeley, CA 94720
(510) 486-5605 · (510) 486-4089 (fax)

This document provides guidelines for an integrated approach to the cost-effective design of perimeter zones in new commercial buildings. It is presented as a quick reference for designers through a set of easy steps and rules-of-thumb emphasizing "how-to" practical details. The document, which can be downloaded from the internet, includes information on glazing, shading, sensors and controls, mechanical and lighting coordination, costs, and maintenance.

Colorado Examples:
Colorado Municipal League, 1144 Sherman St., Denver, CO

Denver International Airport, Peña Blvd., Denver, CO

Harmony Library, Larimer Campus, Front Range Community College, Fort Collins, CO

Thermal Test Facility, National Renewable Energy Laboratory, Denver West Parkway,
Golden, CO


Contact: Jackie Stevens
444 Quay #6, Wilmington, CA 90744
(800) 676-5276

Sun-tracking mirror system reflects sunlight into a ceiling skylight to maximize natural light throughout the day.


Advance Transformer

(800) 372-3331
Local Agent: Sunbelt
2195 S. Raritan, Englewood, CO 80110
(303) 922-1199

Dimming ballasts for T-8s, T-12s, and compact fluorescent lamps.

Lutron Electronics Co.
(800) 523-9466
Local Agent: Lumen Power
2775 W. Hampden Ave., Englewood, CO 80110
(303) 789-3400

Continuous dimming ballasts for fluorescent tubes (Hi-Lume FDB) and compact fluorescents (Hi-Lume Compact).

Local Agent: Electrical Lines
717 S. Jason, Denver, CO
(303) 722-5721

Ballastar variable dimming ballasts offer continuous dimming from 100% to 20% for T-8 lamps. Two-level switching ballast (100% and 50%)and three-level switching ballast (100%, 60%, and 30%) for use when full range dimming not necessary. Lower cost than continuous dimming.

Motorola Lighting Inc.
(800) 654-0089
Local Agent: E-Technologies
2570 S. Dayton Way, Unit F112, Denver, CO 80231
(303) 750-7355


Precision Lighting Inc.
PO Box 8507, Gaithersburg, MD 20898-8507
(301) 670-7845 · (301) 670-2879 (fax)

The Flexiwatt ballast is an automatically adjusting ballast. The user sets the illumination level required for each task at each luminaire. The Flexiwatt uses fiber optic technology to adjust each ballast to the required light level as daylight contribution changes.


Lutron Electronics Co.

See previous listing under Dimming Ballasts.

Automatically adjusts light levels in response to daylight, occupancy sensors, and time clock.

The Watt Stopper, Inc.
2800 De La Cruz Blvd., Santa Clara, CA 95050
(800) 879-8585 · (408) 988-5373 (fax)
Local Agent: MH Lighting
1036 Speer Blvd., Denver CO 80204
(303) 573-0222

Dimming and on/off photocell controls. Combination occupancy sensor and photo-control.


HUVCO-Proactive Energy Solutions
(888) daylite · (301) 865-6798
(Also sold through HomeBase stores)

8", 12" and 24" models available. 24" model most often used in warehouses, storage buildings, and industrial complexes. 8" model illuminates 100 sq. ft., 12" model illuminates 300 sq. ft., prismatic ceiling lens.

ODL Inc.
(800) 253-3900
(Available at local Home Depot or Sutherlands stores)

10" and 21" domes with aluminum light shaft and prismatic ceiling lens diffuser. 10" model lights 100 sq. ft., 21" model lights 400 sq. ft. Light kit can be used to add an electric light to the tube to utilize the light tube when the sun goes down.

New Light Alternatives
8101 E. Belleview, Suite A-80, Denver, CO 80237
(303) 290-6555 · (800) 966-7652 for other distributors

10", 14", 16" models available to light 150 sq. ft., 250 sq. ft., and 400 sq. ft., respectively. Prismatic or flush white diffuser. Showroom in Denver.

Tru-Light Skylights
2120 W. Dartmouth Ave., Englewood, CO 80110
(800) 873-3309

12" model available to illuminate 200 to 250 sq. ft., prismatic diffuser. Showroom in Denver.


Education and Training


Colorado Solar Energy Industries Association (COSEIA)
2170 S. Parker Rd. #255, Denver, CO 80231
(303) 750-9764 · (800) 633-9764 · (303) 750-0085 (fax)

COSEIA offers its members certification courses in active solar and photovoltaics maintenance, repair, and installation.
(Renewable Energy Contractors)

Environmental Educators
P.O. Box 267, Boulder, CO 80306-0267
(303) 449-0867 (phone and fax)

Environmental Educators arranges Designing Low Energy Buildings/ENERGY-10 workshops.

Solar Energy International
PO Box 715, Carbondale, CO 81623
(970) 963-8855 · (970) 963-8866

SEI offers hands-on training courses in photovoltaics design and installation, wind power, solar home design, straw-bale construction, and other topics. The courses are typically held in Carbondale, although they also have an internet-based course as well as some other locations.
(Builders, Architects, Engineers)


General Information


Colorado Renewable Energy Society (CRES)
1000 S. Monaco #77, Denver, CO 80224
(303) 806-5317 (phone & fax) · (888) 806-5317 (phone & fax)

CRES is a member organization that promotes renewable energy in Colorado. Contact CRES to find out about special events, policy issues, or for referrals to members who can offer assistance in renewable energy projects.

Website contains information for consumers and professionals on a variety of energy efficiency and renewable energy topics. Included is a guide to finding professionals in the energy field.
(Builders, Architects, Engineers)

Colorado Solar Energy Industries Association (COSEIA)
See previous listing under Education & Training

Contact COSEIA to find a supplier, installer, and/or designer for solar thermal or photovoltaic systems. Call for a membership directory, or download it from their web page.

Renewable Energy in Buildings

General fact sheets.



Renewable Energy Catalogs
Alternative Choices

Contact: Laurie Campbell
P.O. Box 128, Florence, CO 81226
(800) 784-3603

Remote home systems, PVs, solar hot water, solar space heating, energy-efficient and propane appliances, DC lighting. Tours of systems at office by appointment.

Alternative Energy Engineering
PO Box 339, Redway, CA 95560
(800) 777-6609 (ordering) · (800) 800-0624 (tech support)

Catalog includes photovoltaics, appliances and lights, wind turbines, and more including technical design information.

Alternative Power Enterprises
Contact: Leif Juell
P.O. Box 351, Ridgway, CO 81432

Remote home solar packaged units, PVs, wind, low-energy appliances. Showroom in Ridgway.

Jade Mountain
717 Poplar Ave., Boulder, CO 80304
(800) 442-1972 · (303) 449-8266

Catalog includes photovoltaics, appliances and lights, packaged solar electric systems, used PV modules, wind turbines, and more. Showroom in Boulder.

Real Goods
Renewable Energy Catalog
555 Leslie St., Ukiah, CA 95482-5507
(800) 762-7325

Includes solar, wind, microhydro, lighting and appliances, and more.


Passive Solar


Best Applications:
Commercial buildings under 10,000 sq. ft, residential buildings.

Case Studies
DOE/NREL Exemplary Buildings
1617 Cole Blvd., Golden, CO 80401
(303) 384-7566

Over fifteen case studies of commercial and residential buildings that utilize passive solar design, including photographs and technical information, are presented.
(Architects, Builders, Engineers)

Designing Low-Energy Buildings/ENERGY-10
Passive Solar Industries Council

The Passive Solar Strategies Handbook and the ENERGY-10 computer program are included in the Designing Low-Energy Buildings package. The Passive Solar Strategies Handbook covers basic principles of passive solar architecture, how to use the ENERGY-10 software to design a passive solar building, and a description of sixteen energy-efficient strategies that can be successfully applied to small commercial and residential buildings. The software and handbook were specifically developed to help architects incorporate passive solar and other energy techniques into small commercial and residential buildings.
(Architects, Engineers)

DOE/NREL Exemplary Buildings Program/Technical Assistance
DOE/NREL Exemplary Buildings

If the design team and building owner are committed to achieving a 70% reduction in energy use compared to the Model Energy Code or ASHRAE 90.1, they may be eligible for assistance from the National Renewable Energy Laboratory that includes energy simulations, monitoring, and the creation of case studies, reports, articles, and presentations. The process must begin at the conceptual phase and continue through commissioning. Passive solar design is one aspect of the "whole building approach" advocated. The program applies to residential or commercial buildings.
(Builders, Architects, Engineers)

Efficient Windows Website
Alliance to Save Energy
1200 18th Street NW, Suite 900, Washington, DC 20036
(202) 857-0666 · (202) 331-9588 (fax)

This website provides information on the benefits of energy-efficient windows, descriptions of how they work, and recommendations for their selection and use. Specific recommendations are made for Denver and other cities in the U.S. Most of the information is geared toward residential and small-scale commercial buildings.
(Builders, Architects)

Passive Solar Design Strategies: Guidelines for Home Building and BuilderGuide Software
Passive Solar Industries Council

This guide and accompanying software offer simple explanations of different passive solar techniques, including sun tempering, direct gain, sunspaces, and trombe walls used for residential construction. Each guide is tailored to a specific city and its surrounding area so the architect or builder is only presented with relevant rules-of-thumb for the site. A building can be analyzed with simple worksheets or the BuilderGuide Software.
(Builders, Architects)

Colorado Examples:

Cox Design Builders, homes at Solar Ridge
NW of Fort Collins
(970) 482-3753

Great Sand Dunes National Monument Visitors Center
11500 Hwy. 150, Mosca, CO (35 miles NW of Alamosa)

NREL Visitor Center, Golden, CO

Thermal Test Facility, National Renewable Energy Laboratory
Denver West Parkway, Golden, CO

Tierra Concrete Homes, various sites, Pueblo, CO
(719) 947-2040




Best Applications:

Schools, off-grid buildings, Built Green homes, public buildings for demonstration, retail with environmental interest.

"A PV-Tour through Switzerland - Volume II"
PO Box 142 CH-3000, Bern 6, Switzerland

Photos and descriptions of projects in Switzerland using building-integrated photovoltaics. While some small projects in building-integrated PV have been accomplished in the U.S., European countries are far ahead in this arena. This website document provides ideas and contacts for these types of projects.
(Architects, Engineers)

Colorado Solar Energy Industries Association
See previous listing under Education & Training.

Contact COSEIA to find a supplier, installer, and/or designer for solar thermal or photovoltaic systems. Call for a membership directory, or download it from their web page.

Photovoltaics Fact Sheet

This 11-page fact sheet provides basic information on photovoltaic technology, applications, siting, and maintenance.
(Builders, Architects, Engineers)

Renewable Energy Trust/Solar School Program
Contact: Andy Sulkko
Public Service Company of Colorado
1225 17th Street, Denver, CO 80202-5533
(303) 571-3434 · (800) 894-3368

The Renewable Energy Trust funds the purchase and installation of renewable energy systems for educational and nonprofit use. Until the year 2000, the trust is focusing on bringing PVs to public and nonprofit schools in PSCO territory. Each system includes a data acquisition and display system to facilitate the use of the system as a learning tool.

Schools Going Solar
1800 M Street, NW, Suite 300, Washington, DC 20036-5802
(202) 857-0898 · (202) 223-5537 (fax)

This document serves as a guide to how schools are using solar energy throughout the country. Schools are an excellent application for PV systems, since they can serve as educational devices as well as provide energy. Bringing solar to schools is a good way to increase the use of solar energy in the community at large.

Colorado Examples:

BigHorn Building Supply (PV roofing)
Hwy. 9, Silverthorne, CO

Career Development Center
1200 S. Sunset Dr., Longmont, CO

Chatfield Senior School
7227 S. Simms, Littleton, CO

Colorado Governor's Mansion
400 E. 8th Ave., Denver, CO

Colorado Municipal League (PV skylight)
1144 Sherman St., Denver, CO

Crest View Elementary
1897 Sumac, Boulder, CO

Moffat School
Moffat, CO

Mount Evans Shelter (PV roofing), top of Mt. Evans

Sargent Junior/Senior High
7090 N. Rd. 2E, Monte Vista, CO

Numerous private residences
(Ask COSEIA members for local examples)



Consultants and Engineers (PV)

Architectural Energy Corp., Boulder, CO
(303) 444-4149

Energy Systems Engineering, Basalt, CO
(970) 927-8107

Enermodal Engineering, Denver, CO
(303) 861-2070

Contractor/Dealer (PV)

Alternative Energy, Lakewood, CO
(303) 984-0399

Aspen Solar Systems, Aspen, CO
(970) 925-3659

Great Plains Power, Golden, CO
(303) 239-9963

Solar Energy Products, Inc., Greeley, CO
(970) 353-6505

Solar Energy Resources, Littleton, CO
(303) 979-1899

Solar Solutions, Inc., Fort Collins, CO
(970) 495-1994

Contractors/Dealers (PV and Wind)

Altair Energy, Golden, CO
(800) 836-8951 · (303) 277-0025

Alternative Choices, Florence, CO
(800) 784-3603

Cone Construction, Salida, CO
(719) 530-0718

Eco Electric, Inc., Basalt, CO
(970) 927-9270

Great Solar Works, Ridgway, CO
(970) 626-5253

Mountain Power Company, Ridgway, CO
(970) 626-9777

Mountain Power Design, Crestone, CO
(719) 256-4838

Pioneer Conservation & Solar, Englewood, CO
(303) 770-2419

Positive Energy, Santa Fe, NM
(505) 424-1112

Quicksilver Electrical Service, Frederick, CO
(303) 833-4214

RMS Electric, Boulder, CO
(303) 444-5909

Rocky Mountain Solar, Woodland Park, CO
(719) 687-1002

Solar Solutions, Ltd, Silver Cliff, CO
(719) 783-9666

Sundance Solar Designs, Placerville, CO
(970) 728-3159

Sunsense, Carbondale, CO
(970) 928-9272

Electronics Components (PV)

Heliotrope General
3733 Kenora Drive, Spring Valley, CA 91977
(800) 552-8838 · (619) 460-3930 · (619) 460-9211 (fax)

Manufactures reliable electronics components for solar industry.

Junction Boxes and Connectors (PV)

Multi-Contact USA
5560 Skylane Blvd., Santa Rosa, CA 95403
(707) 575-7575 · (707) 575-7373 (fax)

Manufactures PV junction boxes and connectors for world-wide use.

Modules (PV)
See Contractor/Dealer Section. Most contractors also represent different PV equipment.

Ascension Technology, Inc.
Contact: Greg Kern
4700 Sterling Dr., Unit E, Boulder, CO 80301-2305
(303) 417-1418 · (303) 417-1423 (fax)

Manufacturer of the SunSine300 AC Photovoltaic Module. 300 W panel outputs AC power so no additional inverter is necessary.

Burdick Technology Unlimited
Contact: Joseph Burdick
701 Harlan St. #64, Lakewood, CO 80214
(303) 274-4358

Distributor of Uni-Solar PV shingle and metal roofing product replaces conventional roofing.

Hutton Communications
Contact: Mark Billets
5500 Havana St., Denver, CO 80239
(303) 371-5711 · (303) 371-5690 (fax)

Authorized distributor for Siemens Solar Industries in the Rocky Mountain region.

IPC Photocomm
4585 McIntyre St., Golden, CO 80403
(303) 271-7122 · (303) 271-7124 (fax)

Unisolar non-glass unbreakable solar modules to resist vandalism and flying objects. Photocomm also integrates PV systems for numerous industrial applications world-wide.

Contact: Richard Keller
4089 Valley Oak Dr., Loveland, CO 80538
(970) 593-9500 · (970) 593-9773 (fax)

Manufactures PV modules and system components. Also manufactures building-integrated and curtain wall PV products, and complete grid-tied residential products.

Mounting Racks (PV)

Leveleg Mounting Hardware
8616 Commerce Ave., San Diego, CA 92121
(800) 693-6315 · (619) 693-1434 (fax)

Engineered off-the-shelf mounting systems for photovoltaic and domestic hot water systems.

Renewable Electricity Components

Trace Engineering
5916 195th St. NE, Arlington, WA 98223
(360) 435-8826 · (360) 435-2229 (fax)

DC to AC inverter/chargers from 600 W to 16 kW. Charge controllers for PV, wind, or hydroelectric, and disconnect.


Programs that Promote Renewables


Energy Rated Homes of Colorado
1981 Blake St., Denver, CO 80202-1272
(303) 297-7395 · (800) 877-8450
(303) 297-7305 (TDD) · (303) 297-0948 (fax)

Homes that are built to the 4-Star or 80 point level on theE-Star scale are considered energy-efficient under this program. Renewables can help the home reach this level of efficiency. Once a home reaches that level, the homeowner is eligible for an Energy Efficient Mortgage, which helps them stretch their mortgage ratios to qualify for a home loan. E-Star Builders also receive marketing assistance from ERHC in the form of brochures, advertising, signage, and other promotion.
(Builders, Architects)

Energy Star Homes
US Environmental Protection Agency
Atmospheric Pollution Prevention Division
401 M Street SW (6202J), Washington, DC 20460
(202) 564-9190 · (888)-STAR-YES
(888) 588-9920 (TDD) · (202) 564-9569 (fax)

If you design and build a home that meets the energy efficiency standard of the EPA Energy Star program, you have access to their marketing toolkit, including brochures to pass on to potential buyers, camera-ready Energy-Star logos (like those on an Energy-Star computer or appliance), sample ads, and more. Renewable energy can play a role in meeting the energy standards of the program. In Colorado, Energy Star homes must be certified by Energy Rated Homes of Colorado as receiving 86 points on a 100 point scale.
(Builders, Architects)

Green Builder Program of Colorado
Contact: Kim Calomino
HBA of Metropolitan Denver
1400 S. Emerson St., Denver, CO 80210
(303) 778-1400 · (303) 425-3587 (fax)

Builders who join the Green Builder Program can enter individual homes to receive the Built Green designation. To receive the designation, the home must be built to CABO Model Energy Code standards or receive 80 points on the Energy Rated Homes of Colorado (ERHC) scale, and the home must include 35-38 options from the Built Green checklist. Several renewable energy features are included in the checklist and renewables earn the home points on the ERHC scale. Once a home is designated Built Green, the builder receives marketing assistance from the program.
(Builders, Architects)


Renewable Resource Data


Colorado Renewable Resource Database

Solar and wind resource data, maps, and GIS software for Colorado.

Radiation Data

Web-based tool that provides solar radiation and climate summary data for selected locations in the U.S. The data is intended for siting, specification, and sizing of solar equipment. As of late 1998, tool is still a prototype and doesn't include all cities.

Solar Radiation Data Manual for Buildings
NREL Document Distribution Services
(303) 275-4363 · (303) 275-4053 (fax)

Book provides solar radiation and illuminance values for a horizontal window and four vertical windows (north, east, west, and south) for 239 locations in the U.S. and its territories. This data is suitable for daylighting and passive solar analysis.
(Architects, Engineers)

Wind Data
American Wind Energy Resource Atlas
American Wind Energy Association
777 N. Capitol Street NE, Suite 805, Washington, DC 20002
(202) 408-8988

Maps show average wind resource for all states.


Solar Thermal/Commercial


Best Applications:

Correctional facilities, recreation centers, laundries, industries requiring significant amounts of hot water.

Catalog of Successfully Operating Solar Heat Systems
Solar Energy Industries Association
122 C Street NW, 4th Floor, Washington, DC

This catalog describes solar process heat systems for commercial, industrial, and institutional buildings. It also presents several case studies that include photos, system schematics, cost, energy output, and contacts for further information. Several of the case studies are in Colorado.
(Engineers, Architects)

U.S. DOE Solar Process Heat Program
Contact: Russell Hewett
National Renewable Energy Laboratory (NREL)
1617 Cole Blvd., Golden, CO 80401
(303) 384-7463 · (303) 384-7495 (fax)

This program offers free assistance to projects considering the use of solar process heat systems. Assistance includes providing information including technical reports, non-technical brochures, contacts for similar projects, equipment manufacturer's information, video, and workshops. Technical and engineering support to plan and implement the project and obtain solar data for the site may also be available.
(Engineers, Architects)

Colorado Examples:

Adams County Detention Facility
150 N. 19 th Ave., Brighton, CO slrthrm/26.html

Jefferson County Jail
200 Jefferson County Parkway, Golden, CO

Paul Beck Recreation Center,
800 Telluride St., Aurora, CO slrthrm/23.html




Conifer Solar Consulting, Conifer, CO
(303) 838-4107

Design and repair of active solar system controls. Consulting on control issues.


Aspen Solar Systems, Aspen, CO
See Photovoltaic - Contractor/Dealers listings.

Specialties include solar radiant floors.

Atlasta Solar Products, Grand Junction, CO
(970) 248-0057

Great Solar Works, Ridgway, CO
See Photovoltaics - Contractor/Dealers listings.

Industrial Solar Technology Corp., Golden, CO
(303) 279-8108

Specializes in commercial/industrial-scale parabolic trough systems.

Mountain Power Design, Crestone, CO
See Photovoltaics - Contractor/Dealer listings.

Pioneer Conservation and Solar, Englewood, CO
See Photovoltaics - Contractor/Dealer listings.

Solar Energy Products, Inc., Greeley, CO
(970) 353-6505

Solar Solutions, Inc., Fort Collins, CO
See Photovoltaic - Contracto/Dealer listings.

Thermal Exchange, Aurora, CO
(303) 340-3035

Vendola Plumbing and Heating, Alamosa, CO
(719) 589-5811

William R. Murray & Sun, Colorado Springs, CO
(719) 390-3343

Hot Water Electronics Components

Heliotrope General
See Photovoltaics - Contractor/Dealer listings.

Parabolic Trough Systems

Industrial Solar Technology Corp.
Contact: Ken May
4420 McIntyre Street, Golden, CO 80403-1836
(303) 279-8108 · (303) 279-8107 (fax)

Manufacturer and installer of parabolic trough solar systems for large commercial and industrial applications. Also offers engineering consulting services.

Solar Hot Water Collectors & Systems

Heliodyne, Inc.
Contact: Christel Bieri
4910 Seaport Avenue, Richmond, CA 94804
(510) 237-9614 · (510) 237-7018 (fax)

Manufactures and distributes Gobi collectors and modular Helio-Pak solar hot water systems.

Heliotrope General
See Photovoltaic - Contractor/Dealer listings.

Solar Rating & Certification Corporation (SRCC)
c/o FSEC
1679 Clearlake Rd., Cocoa, FL 32922-5703
(407) 638-1537 · (407) 638-1010 (fax)

Call for a list of certified systems.

SunEarth, Inc.
4315 Santa Ana St., Ontario, CA 91761
(909) 605-5610 · (909) 605-5613 (fax)

Sun, Wind & Fire
7637 SW 33rd Ave., Portland, OR 97219
(800) 397-9651 · (503) 245-2661 · (503) 245-0414 (fax)


Solar Thermal/Domestic Hot Water


Best Applications:

Residential or commercial buildings with good southern exposure.

Colorado Solar Energy Industries Association
See listing under General Information.

COSEIA provides a directory of its members who are certified installers of solar hot water systems. These installers typically design systems, select products, and install systems. Contacting a COSEIA installer is the simplest way to obtain a residential solar hot water system.
(Builders, Architects)

Directory of SRCC Certified Solar Collector and Water Heating System Ratings
Solar Rating and Certification Corporation
See listing under Solar Hot Water Collectors & Systems.

This directory includes residential system descriptions, certified efficiency values, and contact information for solar hot water systems that have undergone voluntary certification tests.
(Builders, Architects)

Solar Thermal Residential Water Heating
Solar Energy Industries Association

Eight page fact sheet includes information about solar hot water heating, including estimates of costs, maintenance requirements, and how they work. The fact sheet also covers pool heating.
(Builders, Architects)

Colorado Examples:

Numerous private residences. Ask COSEIA members for addresses of projects.



See Solar Thermal/Commercial.


Ventilation Pre-Heat


Best Applications:

Manufacturing plants, laboratory facilities, chemical storage facilities, animal-care facilities, gymnasiums.

Transpired Solar Collector Information
Contact: Charles Kutscher
National Renewable Energy Laboratory
1617 Cole Blvd., Golden, CO 80401
(303) 384-7521

This website and fact sheets provide information on how the transpired solar collector works, expected energy savings, costs, and case studies.
(Engineers, Architects)

Colorado Examples:

AVUM Helicopter Hanger, Fort Carson
Army Post, Colorado Springs, CO

BigHorn Home Improvement Center
Hwy. 9, Silverthorne, CO

Bureau of Reclamation Wastewater Treatment Plant
Hwy. 91, Leadville, CO

Eleven Mile State Recreation Area
Maintenance Building, Lake George, CO

Federal Express distribution center
(NW of Santa Fe and Belleview) Littleton, CO


Conserval Systems, Inc.
4242 Ridge Lea Rd., Suite 1, Buffalo, NY 14226
(716) 835-4903 · (716) 835-4904 (fax)

Conserval Engineering owns the patent on the only commercial transpired solar collector system. Collector is made up of corrugated metal cladding with tiny holes. Cladding replaces typical cladding for cost savings. System can be one of many dark colors.


Wind Power


Best Applications:

Off-grid homes or commercial buildings in windy locations; any building in the territory of a utility company that offers grid-connected wind power options.

Colorado Springs Utilities
(719) 448-4800 · (800) 238-5434

Fort Collins Light and Power
(970) 221-6704

Holy Cross Energy, Aspen, CO
(970) 945-5491

Public Service Company of Colorado
See listing under Photovoltaics - Resource Information.

Yampa Valley Electric, Steamboat Springs, CO
(970) 879-1160

Customers of these utility companies can sign up for wind power. A small fee ($2-$3 per 100 kWh) is required. Signing up for wind power supports the development of grid-connected wind turbines.



See Photovoltaics.




Advances in Window Technology Factsheet

This factsheet describes some of the advances in window technology that make daylighting more effective, including low-E coatings and spectrally selective coatings.
(Architects, Engineers)

Efficient Windows Website

Alliance to Save Energy
See listing under Passive Solar - Resource Information.



PPG Industries

1 PPG Place, Pittsburgh PA 15272
(800) 774-4527 · (714) 479-0287 (fax)

Azurlite is a spectrally selective, tinted glass. It has a light blue tint, and high visible transmittance with good solar control.

Suntek, Inc.

6817 Bldg. A, Academy Pkwy. East, Albuquerque NM 87109
(505) 345-4115 · (505) 345-9998 (fax)

Cloud Gel is a switchable, thermochromic glazing. It automatically changes from clear to white in response to temperature. The transition temperature can be set between 68 F and 104 F. In clear state, it transmits 92% of illumination and 84% of solar heat. In white state, it reflects 90% of illumination and 84% of solar heat. Product is suspended between 2 lites of glass.

AFG Industries Inc.

PO Box 929, Kingsport TN 37662
(800) 251-0441
Local Agent: American Flat Glass Distributors
11950 East 33rd Avenue, Aurora CO 80010
(303) 371-1151

Comfort E2 is a hard coat, low-E glazing and the Comfort Ti series are soft coats. The following table gives the performance of the products when used in an insulating glazing unit with 1/2" air space.




 Comfort E2/clear  0.7  0.35
 Comfort Ti-PS/clear  0.6  0.30
 Comfort Ti-R/clear  0.5  0.30
 Comfort Ti-AC/clear  0.4  0.30

Libbey Owens Ford (LOF)

500 East Louise, Lathrop CA 95330
(800) 522-9430
Local Agent: General Glass Corp.
11205 E. 37th Avenue, Denver, CO 80239
(303) 371-5511

Energy Advantage is a hard coat, low-E glass. An insulating glazing unit with a 1/2" gap width and Energy Advantage on the outboard lite and clear to the inside has an SHGC of 0.7 and a U-Factor of 0.35.

Libbey Owens Ford (LOF)
See previous listing above.

Evergreen is a spectrally selective, tinted glass. It has a light green tint, and high visible transmittance with good solar control.

Southwall Technologies

1029 Corporation Way, Palo Alto CA 94303
(800) 365-8794
Local Agent: Alpen
5400 Spine Road, Boulder CO 80301
(303) 530-1150

Heat Mirror is a polyester film with low-E coating. The film is suspended between 2 glass lites with air gaps between the glass film. A variety of products are available that achieve low U-Factors and a range of SHGC's. The TC88 film has low-E coatings on both surfaces and achieves low U-Factors. The SC75 film has one low-E coating and offers a high visible transmittance and a low SHGC.

Cardinal IG

12301 Whitewater Drive, Minneapolis MN 55343
(800) 843-1484 · (612) 929-6719 (fax)

Low-E2 is a soft coat, low-E glazing. An insulating glazing unit with a 1/2" gap width and Low-E2 on the outboard lite and clear on the inside has an SHGC of 0.4 and a U-Factor of 0.30.

Guardian Industries

14600 Romine Road, Carleton MI 48117
(800) 521-9040 · (800) 521-0211 (fax)

Performance Plus II is a soft coat, low-E glazing. An insulating glazing unit with a 1/2" gap width and Performance Plus II on the outboard lite and clear on the inside has an SHGC of 0.4 and a U-Factor of 0.30.

Sage Electrochromics, Inc.
2150 Airport Dr., Faibault, MN 55021
(507) 333-0078

Sageglass is an electrochromic glazing that switches from clear to tinted electronically. By changing the applied voltage, the glazing transmittance can be modulated between the two states.


800 Park Drive, Owatonna MN 55060
(800) 533-2080 · (507) 444-3555 (fax)
Local Agent: Viracon, Garret Hennson
(303) 991-9972

Solarscreen 2000 is a soft coat, low-E glazing. An insulating glazing unit with a 1/2" gap width and Solarscreen 2000 on the outboard lite and clear on the inside has an SHGC of 0.4 and a U-Factor of 0.30.

PPG Industries

See listing under Windows/Glazing - Products & Assistance.

Sungate 100 and Sungate 1000 are soft coat low-E glazings. Sungate 500 is a hard coat, low-E glazing. The following table gives the performance of the products when used in an insulating glazing unit with a 1/2" air space.




 Sungate 500/clear  .7  .35
 Sungate 100/clear  .5  .32
 Sungate 1000/clear  .4  .30