Explore Our Research Publications

International Benchmarking Analysis of Air Source Heat Pump and Chiller Standards

This study offers a technical comparison of how the world’s three largest markets (China, the EU, and the US) for heat pumps and chillers define, measure, and regulate cooling efficiency.

30 Jul 2025

2024 World’s Best MEPS: Technical Appendix

Explore the criteria used by CLASP’s World’s Best MEPS tool to compare leading energy performance standards globally and identify the most stringent policies.

16 Jun 2025

Market Assessment Report for Packaged Boilers in India

This report delves into CLASP's market assessment and technical support to India’s Bureau of Energy Efficiency in developing energy efficiency policies for packaged boilers in India.

24 Jul 2024

Improving Public Health & Advancing Equity Goals with Appliance Energy Efficiency Standards

Key findings from a recent report estimating the distribution of public health benefits from appliance energy efficiency standards in disadvantaged communities in the United States.

29 Nov 2023

Net Zero Heroes: Scaling Efficient Appliances for Climate Change Mitigation, Adaptation & Resilience

In this report, CLASP describes the critical role appliances must play in reaching net zero emissions and enabling a just energy transition.

16 Nov 2023

Quantifying Appliance Access Gaps for a Climate-Resilient Africa

This report quantifies appliance access gaps in Africa for five appliances essential for climate-resilient development: refrigerators, televisions, fans, air conditioners, and solar water pumps.

03 Sep 2023

Building Resilience in Low-Income Communities – The Role of Off-Grid Appliances

This report examines community resilience in the context of climate change, focusing on the role of off-grid solar products and equipment in supporting low-income communities in sub-Saharan Africa.

12 Jun 2023

China’s MEPS Lead to Major AC Market Transformation

CLASP's analysis of China's evolving room air conditioner standards shows strong evidence for policy's role in swift market transformation.

02 Jun 2023

Energy Efficiency in the Favelas

New report reveals insights about the intersection of energy, poverty and efficiency in favelas across Rio de Janeiro.

18 Apr 2023

Water and Energy Justice in the Favelas

CLASP assisted Catalytic Communities in a youth-run research project aimed at training low-income favela residents in the full arc of research, including how to use data to address compounding water and energy crises in Rio.

07 Apr 2023

World’s Best MEPS: Identifying Top Energy Efficiency Standards for Priority Appliances

This report compares the stringency of minimum energy performance standards (MEPS) requirements for the six highest-emitting appliance categories across ten of the world’s highest carbon emitting economies.

20 Dec 2022

Combating High Fuel Prices with Hybrid Heating: The Case for Swapping Air Conditioners for Heat Pumps

This report offers a strategy to kickstart home electrification in the US by swapping traditional air conditioners (AC) to two-way heat pumps that can both heat and cool indoor spaces.

07 Jul 2022

Replacing Residential Heating Oil with Heat Pumps in the US

This paper explores two opportunities for heat pump retrofits for oil heating equipment in the US, and the costs and benefits of each based on a 2021 CLASP analysis, with updates to reflect oil heat and December 2021 prices.

20 Apr 2022

Webinar Materials | How Mepsy Can Transform Your Energy Efficiency Policy Development

Presentation materials from a webinar demonstration of energy efficiency policy tool Mepsy and its features on 16 March 2022.

21 Mar 2022

Off- and Weak-Grid Appliance Market: Uganda

This country profile covers relevant market and appliance performance data for off-grid appliances sold in Uganda based on findings from Efficiency for Access market surveys. It provides market insights to help inform sector stakeholders and encourage higher market penetration for high-quality off- and weak-grid appropriate appliances.

02 Sep 2021

Uses and Impacts of Solar Water Pumps

This report explores the benefits and potential challenges experienced by solar water pump customers in East Africa, Senegal and Zambia based on findings by the 60 Decibels team. It provides insights to inform stakeholders and encourage scaling of markets for nascent technologies like solar water pumps.

28 Jun 2021

Off- and Weak-Grid Appliance Market: Nigeria

This country profile covers relevant market and appliance performance data for off-grid appliances sold in Nigeria based on findings from Efficiency for Access market surveys. It provides market insights to help inform sector stakeholders and encourage higher market penetration for high-quality off- and weak-grid appropriate appliances.

14 Jun 2021

3H Hybrid Heat Homes: An Incentive Program to Electrify Space Heating and Reduce Energy Bills in American Homes

This report proposes a low-barrier, least-cost policy package to rapidly deploy efficient space heating and cooling solutions in the United States. It aims to “raise the floor” for electric space heating in the residential HVAC market, delivering 45 million new installations over 10 years and paving the way for more ambitious decarbonization efforts.

25 May 2021