Research Themes +
Energy Technologies Area (ETA) researchers are continually building on the strong scientific foundation we have developed over the past 50 years. We address the world’s most pressing climate challenges by bringing to market energy-efficient innovations across the buildings, transportation, and industrial sectors. ETA is at the forefront of developing better batteries for electric vehicles; improving the country's aging electrical grid and innovating distributed energy and storage solutions; developing grid-interactive, efficient buildings; and providing the most comprehensive market and data analysis worldwide for renewable technologies like wind and solar.
Strategic Initiatives +
The Energy Technologies Area (ETA) Strategic Plan is the guiding force for our research and development for the next ten years. It clearly charts a path toward clean-energy solutions and focuses on five detailed Strategic Initiatives. The Plan provides an in-depth look at how ETA is accelerating research to provide affordable, clean energy to all while accomplishing deep, economy-wide decarbonization, looking to avoid a rise in global average temperature while simultaneously developing solutions to increase humanity's resilience to extreme weather volatility.
Publications
News +
For media inquiries,
please contact ETA
Interim Communications Manager
Kiran Julin

kjulin@lbl.gov
About Us +
The Energy Technologies Area (ETA) is unique in translating fundamental scientific discoveries into scalable technology adoption. Our approach combines an understanding of the marketplace and the role of state and federal regulation and policies. ETA's research drives real-world, practical results that affect and improve the everyday lives of Americans and those across the globe. Saving energy and battling the Climate Crisis are key to the foundation of our research, which is driven by technoeconomic analysis and in-lab experimentation and discovery.

Publications

Publications by Research Area

Demand Response

Electricity Markets & Policy

Energy Efficiency

Industrial Energy Analysis

Renewable Energy

Sustainable Energy & Environmental Systems

Publications by Division

Building Technology (BTUS)

Energy Analysis (EAEI)

Energy Storage (ESDR)

1993

Klems, Joseph H."A New Method for Predicting the Solar Heat Gain of Complex Fenestration Systems I. Overview and Derivation of the Matrix Layer Calculation."ASHRAE Transactions 100, Part 1 (1993).

Selkowitz, Stephen E, Eleanor S Lee, Francis M Rubinstein, Joseph H Klems, Konstantinos M Papamichael, Liliana O Beltran, Dennis L DiBartolomeo, and Robert Sullivan."Realizing the DSM Potential of Integrated Envelope and Lighting Systems."2nd National New Construction Programs for Demand-Side Management Conference (1993).

Klems, Joseph H."A New Method for Predicting the Solar Heat Gain of Complex Fenestration Systems II. Detailed Description of the Matrix Layer Calculation."ASHRAE Transactions 100.1 (1993).

Yazdanian, Mehry, and Joseph H Klems."Measurement of the Exterior Convective Film Coefficient for Windows in Low-Rise Buildings."ASHRAE Transactions 100, Part 1 (1993).

1992

Klems, Joseph H, and Jeffrey L Warner."A New Method for Predicting the Solar Heat Gain of Complex Fenestration Systems."Thermal Performance of the Exterior Envelope of Buildings V Conference Proceedings (1992).

Klems, Joseph H."Method of Measuring Nighttime U-Values Using the Mobile Window Thermal Test (MoWiTT) Facility."ASHRAE Transactions 98, Part 2 (1992).

Klems, Joseph H."Net Energy Performance Measurements on Two Low-E Windows." (1992).

1990

Klems, Joseph H, and M. M Susan Reilly."Window Nighttime U-Values: A Comparison Between Computer Calculations and MoWiTT Measurements."ASHRAE Transactions 96 (1990).

Klems, Joseph H."X-Ray Inverse Florescence Allowed by Molecular Excitation (XIFAME) as a Possible Contrast Mechanism for Chemically-Sensitive Imaging & Spectroscopy."Physical Review A-15 (1990).

1988

Klems, Joseph H."U-Values, Solar Heat Gain, and Thermal Performance: Recent Studies Using the MoWiTT."ASHRAE TransactionsASHRAE Winter Meeting: Fenestration U-Value Symposium 95, part 1 (1988).

Klems, Joseph H."Measurement of Fenestration Net Energy Performance: Considerations Leading to Development of the Mobile Window Thermal Test (MoWiTT) Facility."Journal of Solar Energy Engineering 110 (1988) 208-216.

Papamichael, Konstantinos M, Joseph H Klems, and Stephen E Selkowitz."Determination and Application of Bidirectional Solar-Optical Properties of Fenestration Systems."13th National Passive Solar Conference (1988).

1987

Klems, Joseph H, and H Keller."Measurement of Fenestration Thermal Performance Under Realistic Conditions Using the MoWiTT."3rd International Congress on Building Energy Management (1987).

Klems, Joseph H, and H Keller."Thermal Performance Measurements of Sealed Insulating Glass Units with Low-E Coatings Using the MoWitt Field Test Facility."ASHRAE Winter Meeting, Symposium on Fenestration Performance (1987).

1986

Klems, Joseph H, and H Keller."Measurement of Single and Double Glazing Thermal Performance under Realistic Conditions Using The Mobile Window Thermal Test (MoWITT) Facility."1987 ASME Solar Energy Division Conference (1986).

1985

Klems, Joseph H, and H Keller."Measured Net Energy Pergormance of Single Glazing Under Realistic Conditions."Proceedings of the ASHRAE/DOE/BTECC Conference (1985).

Klems, Joseph H."Toward Accurate Prediction of Comparative Fenestration Performance."Workshop on Laboratory Measurements of U-Values of Windows (1985).

DiBartolomeo, Dennis L, and Joseph H Klems."Simple Phase-Sensitive Detector for Wheatstone Bridge Resistance Measurements."Review of Scientific Instruments 56 (1985) 755-757.

1984

Klems, Joseph H."Measurement of Fenestration Performance Under Realistic Conditions."Windows in Building Design and Maintenance Conference (1984).

Klems, Joseph H."Error Analysis of In-Situ Field Tests of Fenestration Performance."Energy and Buildings 8 (1984) 165-173.

Klems, Joseph H."Measurement of Fenestration Net Energy Performance: Considerations Leading to Development of the Mobile Window Thermal Test (MoWiTT) Facility."Journal of Solar Energy Engineering (1984).

1982

Klems, Joseph H, Stephen E Selkowitz, and Sy Horowitz."A Mobile Facility for Measuring Net Energy Performance of Windows and Skylights."3rd International CIB Symposium on Energy Conservation in the Built Environment (1982).

Klems, Joseph H."Design and Construction of Large-Area Heat-Flow Sensors for Measuring Building Heat Flow."ASHRAE Transactions 88 (1982).

Klems, Joseph H, and Dennis L DiBartolomeo."Large-Area, High-Sensitivity Heat-Flow Sensor."Review of Scientific Instruments 53 (1982) 1609-1612.

1981

Klems, Joseph H."A Calibrated Hotbox for Testing Window Systems - Construction, Calibration, and Measurements on Prototype High-Performance Windows."ASHRAE Transactions 85 (1981) 930-941.