News

November 2019

Research Brief published: Barriers Preventing Growth of Onsite Water Reuse in California Read the Research Brief

Read the Research Brief

March 2019

Director Frank Loge Receives Endowed Professorship from Technólogico de Monterrey to Advance the Water-Energy-Food NexusDr. Loge’s appointment adds to the growing number of research projects that UC Davis is conducting in collaboration with Mexico.

View the original article at the UC Davis Energy and Efficiency Institutewebsite

April 2018

Event
CWEE Brings to Flow to the 2018 Energy Affiliates ForumRead the article here

January 2018

News Article
A silver lining from California’s drought: Water conservation led to reduced energy use and less pollutionRead the article at: LA Times
New Publication
The estimated impact of California’s urban water conservation mandate on electricity consumption and greenhouse gas emissionsAbstract: In April 2015, the Governor of California mandated a 25% statewide reduction in water consumption (relative to 2013 levels) by urban water suppliers. The more than 400 public water agencies affected by the regulation were also required to report monthly progress towards the conservation goal to the State Water Resources Control Board. This paper uses the reported data to assess how the water utilities have responded to this mandate and to estimate the electricity savings and greenhouse gas (GHG) emissions reductions associated with reduced operation of urban water infrastructure systems. The results show that California succeeded in saving 524 000 million gallons (MG) of water (a 24.5% decrease relative to the 2013 baseline) over the mandate period, which translates into 1830 GWh total electricity savings, and a GHG emissions reduction of 521 000 metric tonnes of carbon dioxide equivalents (MT CO2e). For comparison, the total electricity savings linked to water conservation are approximately 11% greater than the savings achieved by the investor-owned electricity utilities’ efficiency programs for roughly the same time period, and the GHG savings represent the equivalent of taking about 111 000 cars off the road for a year. These indirect, large-scale electricity and GHG savings were achieved at costs that were competitive with existing programs that target electricity and GHG savings directly and independently. Finally, given the breadth of the results produced, we built a companion website, called ‘H2Open’ (https://cwee.shinyapps.io/greengov/), to this research effort that allows users to view and explore the data and results across scales, from individual water utilities to the statewide summary.Read the article at: Environmental Research Letters

November 2017

New Publication
Segmentation analysis of residential water-electricity demand for customized demand-side management program

Abstract: With increasing water and energy use in the residential sector, due to population growth, urbanization, and climate change, demand-side management (DSM) is essential to complement supply-side interventions to meet future demands and reduce costs. This paper explores how customer segmentation analysis can support customized water and electricity DSM. We contribute a three-phase customer segmentation analysis of over 1000 residential accounts in the Los Angeles County (Southern California) to explore the heterogeneity of residential water-electricity demand profiles and provide insights for coordinated water-energy DSM. Results show that, on the one hand, daily water and electricity consumption are correlated, thus groups of high consumers can be targeted with coordinated water-electricity DSM interventions. On the other hand, the absence of a relevant causal nexus between water and electricity daily load shapes suggests that DSM actions for water should be differentiated from those for electricity. Finally, both objective (e.g., presence of swimming pool) and subjective psychographic features (e.g., conservation attitude) are found to be relevant potential drivers of water-electricity demands. Based on these findings, we propose recommendations for designing a portfolio of mixed customized water-electricity DSM interventions to foster conservation or peak shifting objectives.

Read the article at: Journal of Cleaner Production

October 2017

$3.1M California Energy Commission grant awarded to CWEE
Helping Water Utilities Reduce California’s Energy Use and Emissions

Read the article at: UC Davis News

June 2017

Securing the Cloud
Read about Dr. Loge’s collaboration with Microsoft

Read the article at: Microsoft News