New York City  Energy Mapping Project

New York City Energy Mapping Project

The Modi Research Group’s New York City Energy Mapping Project based on this study  was jointly presented by Professor Vijay Modi and PhD student, Bianca Howard at the NorthEast Clean Heat and Power Initiative conference. The interactive map represents the total annual building energy consumption at the block level and at the taxlot level for New York City, and is expressed in kilowatt hours (kWh) per square meter of land area. The data comes from a mathematical model based on statistics, not private information from utilities, to estimate the annual energy consumption values of buildings throughout the five boroughs. To see the break down of the type of energy being used, for which purpose and in what quantity, hover over or click on a block or taxlot. The map has recently been featured in various news article sources like NYTimes, WSJ and CNET.

Check out the interactive map below.

Posted in Energy Planning, Information Technology, News, Urban Energy Modeling9 Comments

Ayse Selin Kocaman wins 1st place in 2011 POMS Ph.D. proposal competition

Ayse Selin Kocaman wins 1st place in 2011 POMS Ph.D. proposal competition

In April, Ayse Selin Kocaman, a Ph.D. student in the Modi Research Group, was awarded with first place in the 2011 Production and Operations Management Society (POMS) College of Sustainable  Operations Ph.D. Proposal Award Competition with her dissertation titled “Connecting People to Electricity- Single Level and Multi-Level Grid Network Design for Rural Electrification.”

In a technological landscape that is altered by emergence of off-grid and distributed approaches, there is a need amongst infrastructure planners to evaluate the costs of networked approaches vis a vis off-grid approaches and to make rapid assessment of the progress in rural electrification. However, it is not easy to estimate the cost of networked infrastructure taking into account both the spatial distribution of demand and the optimal placement of infrastructure to meet that demand. Through its algorithms, Selin’s proposal can enable the tools that allow planners to make assessments about networked infrastructure rapidly and accurately.

The first heuristic algorithm, Selin proposes, provides a quick solution for the partial electrification problem where the grid network can only connect pre-specified number of households with low voltage lines. It also, helps understanding the effect of household settlement patterns on the electrification cost. Moreover, she describes the first multi-level heuristic algorithm that can simultaneously select the locations and service areas of transformers without requiring candidate locations and builds network in both medium voltage and low voltage levels in a power distribution system. The algorithm minimizes overall infrastructure costs while considering the cost of the transformer, the costs of building out low voltage line downstream
towards the spatially distributed demand and medium voltage line upstream towards the source.

The algorithms have been applied to real world rural settings in Africa, where household locations digitized from satellite imagery are prescribed. Results shows that the algorithms provide stable network designs with realistic values and they can be used as powerful tools by planners to rapidly estimate the cost of installing a distribution system.

Posted in Africa, Energy Planning, grid, News1 Comment

Infrastructure from the Bottom Up: An Overview and Assessment of the Millennium Village Project Energy and Infrastructure Sector after Five Years

Infrastructure from the Bottom Up: An Overview and Assessment of the Millennium Village Project Energy and Infrastructure Sector after Five Years

This report an attempt to document progress and lessons learned from the first five years of the Millennium Village Project (MVP) with a focus on investments in infrastructure and services related to energy, transportation, communications and piped water supply. The broad goal of this component of the MVP was to address some of the constraints that a lack of infrastructure and related services had placed on health, agriculture, education and economic activity in a rural, poor setting. The interventions were designed based on a combination of accepted development practices and community priorities.

Read the report by chapter:

Acknowledgements and Table of Contents

Executive Summary

Chapter 1. Energy, Infrastructure and the MDGs

Chapter 2. Lessons Learned and Policy Implications

Chapter 3. Project Operations

Chapter 4. Technical Solutions

Chapter 5. Innovations

Chapter 6. Site Profile Bonsaaso, Ghana

Chapter 7. Site Profile Potou, Senegal

Chapter 8. Site Profile Sauri, Kenya

Chapter 9. Site Profile, Ruhiira, Uganda

Chapter 10. Maintenance and Sustainability

Appendices

Or download the full report here:
Download link to MVP 5-Year Report

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Vijay Modi profile on Earth Institute website

Vijay Modi profile on Earth Institute website

A new profile of Vijay Modi and his research has gone live on the Earth Institute website.

Please find it here:

V. Modi EI profile January 2011

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Energy Scoping Mission in Haiti

Energy Scoping Mission in Haiti

“Charcoal, Construction and Coffins: Tracing Links from Disasters to Deforestation in Haiti” as published on State of the Planet, Blogs from the Earth Institute:

http://blogs.ei.columbia.edu/2010/12/15/charcoal-construction-and-coffins-tracing-links-from-disasters-to-deforestation/

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Photo Diary – Lantern Sales Begin in Potou, Senegal

Photo Diary – Lantern Sales Begin in Potou, Senegal

Lantern promotion began on October 26th in the bustling Potou weekly market. During the first day of marketing the local solar association La Luminere Solaire reached a total of 50 potential buyers directly (and many more indirectly) through conversations that sought to educate interested customers on price, warranty and lantern benefits. Many of those who tried the lanterns are eager to buy when they go on sale next week.

La Luminere Solaire – Potou’s local solar association

La Luminere Solaire set up a table in the middle of the busy Potou market to demonstrate the solar charging capacity and to allow potential customers to try the new lanterns.

Promotional booth in the Potou Market

The lanterns and chargers were displayed to demonstrate the solar charging capacity of the panels and the lanterns ability to charge mobile phones. Villagers were encouraged to charge their phones using the solar power of the demonstration lanterns.

Lantern Panels Charging

Lanterns Charging Cellphones

La Luminere Solaire also gave demonstrations to people passing by, explaining the functions of the lanterns, how to use them, and the advantages of LED lanterns over kerosene and dry-cell batteries. Many stopped to listen to the explanations given by La Luminere Solaire and are eager to purchase the lanterns for their homes and businesses.

La Luminere Solaire Explains Lantern Advantages to Onlookers

People Gather to Examine the Lanterns

People are Encouraged to try the Lanterns

La Luminere Solaire viewed lantern promotion in the market to be such a success, they will continue attending the weekly market to promote and sell the improved LED lanterns to the Potou cluster and beyond.

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Lessons being learned in Potou: Week 6

Lessons being learned in Potou: Week 6

We completed 12 paired cooking tests and were hoping to begin seeing some kind of trend. This isn’t too much to ask because after 12 tests in other sites, we had an idea of the kind of behavior to expect from the data we were collecting. Senegal has been a different beast entirely. You could break down what we’ve done at other sites down to two basic tests: 1) boiling starch in water – corn flour, guinea corn flour, yams, cassava etc 2) boiling a protein – beans. In Senegal there’s frying, then boiling in the oil that was just fried with during which you’re busy steaming over the boiling that comprises the frying you’d done.

Things that are helping make sense of the data include:

1. Take pictures of every pot during the test. This will come in handy later if you need to know what kind of wood was used, the condition of the fire and how much tending was or wasn’t provided.

2. Standardize cooking practices as much as possible. With steaming and frying and boiling in fried oil etc, it’s necessary to make sure that everyone is doing the same thing. Most importantly, when making Couscous, we noticed that some people waited for the water to boil before they began steaming while others placed their Couscous on cold water and then boiled the water. Also, most people cover their Couscous with cloth, one house covered with plastic. Things like this could affect data in unusual ways.

3. Do more tests. While the first 12 tests have provided some interesting data, we are learning that cooking practices may affect stove performance. With subsequent tests, we’ll pay more attention to this intriguing development.

Posted in Africa, Biomass Cook Stoves, News, Senegal0 Comments

Field testing and survey evaluation of household biomass cookstoves in rural sub-Saharan Africa

Field testing and survey evaluation of household biomass cookstoves in rural sub-Saharan Africa

This paper presents the results of two studies conducted to evaluate the performance and usability of household biomass cookstoves under field conditions in rural sub-Saharan Africa. Cooking tests and qualitative surveys compared improved, manufactured stove models based on the ‘rocket’ design with the traditional three-stone fire. All tests and interviews took place in household kitchens in two village areas in Western Uganda and Western Tanzania. The performance parameters evaluated in cooking tests were specific fuelwood consumption and cooking time. Surveying of household cooks gathered information about prevailing cooking practices, stove preference and usability, and willingness to pay for novel stove types. Test results showed that the manufactured stoves, in general, yield a substantial reduction in specific fuelwood consumption relative to the three-stone fire, with results varying by stove type and type of food cooked. Survey data suggests that while cooks recognize fuelwood savings as an important benefit, overall stove preference depends upon a combination of this and other factors, including cooking time, stove size and ease of use. These findings highlight the importance of testing multiple cookstoves for preparation of a variety of food items, as well as combined use of quantitative stove tests in combination with qualitative surveys in efforts to determine suitability of cookstoves for household use in a given community.

Download full paper here

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Stove Testing in Potou, Senegal: Week 1

Stove Testing in Potou, Senegal: Week 1

Just got back from the field and I’ve got photos for you to look at. I haven’t given you very much context so please go ahead and ask questions about them.

The main thing I wanted to get across, however, is that there’s a stove factory in Wahal Diam, a village here in the Potou MVP cluster in Senegal. These women make the ceramic inserts that go into the metal casing for the stoves. I wouldn’t characterize this is a stove in the rocket design. But it got me thinking that Stovetec should consider setting up a manufacturing base in Senegal.

Workmanship is really good here and in Dakar. There’s already an industry that’s involved in making stoves. Granted it’s very cottage and would need some upgrading, but these women who make the ceramic inserts are hard workers and are eager to expand. So eager in fact that they burned bridges with a village blacksmith who was taking too long to make the metal casing and have found a blacksmith in Dakar to forge the metal for them.

Given the proper dimensions and composition, I think it’s very possible we could have Stovetecs manufactured in Senegal.

Posted in Africa, Biomass Cook Stoves, News, Senegal0 Comments

Stove Testing in Pampaida: Week 9

Stove Testing in Pampaida: Week 9

This week we held two training sessions for members of the Pampaida Energy Coop. The first day focused on costs and commissions while the second day focused on marketing and record keeping.

Marketing:

In order to prepare vendors for whatever questions they might be asked as they become advocates for efficient stoves, we discussed what we learned from our tests in Pampaida.

  • For tuwo, the food cooked most in Pampaida, Stovetec used on average about 60% less wood than the 3-stone fire. Only 10 out of the 30 households surveyed purchase firewood.
  • For those that purchase wood, they spend an average of N55 each day during the four months of rainy season, which translates to N6600 ($44) per season. With the Stovetec, they could keep at least half of what this for themselves.
  • For those that collect, using the Stovetec would save them time since the wood they collect would last them longer.
  • People also noted that an added advantage of using the Stovetec was that it was easier to start and keep fires going because the Stovetec is not as affected by sudden gusts of wind as the 3-stone fire.

Advertising:

The coop suggested that we hold a mass rally throughout the cluster with loudspeakers, drums and posters to announce that we’ve begun selling stoves. Certain coop members have had experience in organizing such rallies in the past for political and cultural rallies. We agreed to this idea and have asked the coop to make all the necessary plans. We also designed a marketing poster and advertisement jingle to go along with the sales launch planned for Tuesday.

The coop explained that the rally truck will be covered with these posters and will go from village to village with loudspeakers, drummers and dancers. Our tagline for this marketing campaign reads, Stovetec: have you bought yours?

Poster translation: What people are saying: modern stove; well-designed stove; clean stove; the stove that doesn’t cause tears; attractive stove;  fast stove. Oh my! 40 minutes is more than enough. Food is ready!…. Stovetec: have you bought yours?

Caveat: When you design a poster and give it to a professional printer, make sure you vet a sample copy before he prints the entire batch. I learned this the hard way when 210 copies of a dull and entirely redesigned version of the poster above was handed to me on Monday morning. Without my consent, he’d changed the design. Kept none of the original colors and was annoyed that I wasn’t happy with him.

Keeping track of stoves and buyers:

We have a list of all households in the cluster. Vendors will record the names of people they sell to and each week. We have provided each vendor with a Record Sheet in which to record the buyer’s name, settlement, and date of transaction. The enumerators will compare these names against the household master list.

Storage

We agreed that each of the four main axes – Pampaida, Kwari, Saulawa and Fadamar Kale – should have a locally accessible storeroom so vendors won’t have to travel far to collect stoves for sale. The coop will elect storekeepers who will hold the keys to the local storerooms. Enumerators will keep spares in the event that the storekeeper is not reachable.

Each vendor is allowed to take no more than ten stoves at a time from the store. After a vendor sells all ten of her stoves, she hands the money from these sales to an enumerator and the enumerator signs the vendor’s completed Record Sheet. With this completed Record Sheet, the vendor presents this signed Record Sheet to the storekeeper allowing her to receive her next batch of ten stoves. No stoves will be released from the store without this signed and dated document.

Costs, Commissions, and Credit:

The actual cost of each stove is N2850 ($19). Millennium Promise is selling the stoves to the cooperative at a cost of N2350. The coop in turn makes a N150 ($1) commission on every stove completely sold. There is no commission for partial sales. A sale is considered complete when the entire N2500 for the stove has been handed over to an enumerator. A sale remains incomplete as long as there is an outstanding balance to be collected. The minimum deposit for which a vendor will release a stove to a buyer is N1500 ($10). Commissions will be distributed after we’ve exhausted our first batch of 1000 stoves.

Before training, I’d suggested that we allow people pay their balance in two monthly installments of N500 each. However, we were curious to hear the coop’s opinion on this. When asked how much time they were willing to give people to pay the remaining N1000 balance, one month was their reply. Upon further deliberation, they added that if a person did not pay up after a month, they would take back the stove and the debtor would lose his deposit. Although we thought this was rather harsh, we decided that this was ultimately their business and they had a better idea of how things work in their community than we did. However, we made it clear that seizing stoves should be a very last resort.

Frequently Asked Questions:

Can we sell outside the cluster?

Eventually. For now, we’re focusing on the Millennium Village cluster but as sales grow and every household has had a chance to buy a stove, you can begin selling outside the cluster.

What if I buy two stoves and give one to my brother who doesn’t live in the cluster?

We can’t stop you from doing that. But by doing so, you’re sabotaging your chances of making higher profits in future. If your brother knows that you bought it at N2500 – which is far below market value, he’ll tell other people outside the cluster. When you’re ready to sell outside the cluster, your market will be a lot less willing to pay full market price.

Posted in Africa, Biomass Cook Stoves, News, Nigeria0 Comments

Stove Testing in Pampaida: Week 8

This week will be spent training the coop on record keeping and the stove’s fuel savings of about 50%. We will also be creating marketing posters and hand bills to go along with the launch of stove sales.

Between May and October, the village will be busy farming. This means we may have to compete for their attention. As an incentive, we will be offering N150 ($1) per stove sold. This means the coop of 16 people stands to make N150,000 ($1000) – a substantial amount that translates to about N9300 ($62) per member if each member sells the same number of stoves. We expect that this will encourage members to be set high individual sales goals and will encourage the coop to exhaust the existing inventory. Commission will be commensurate with the number of stoves sold and the faster stoves sell the faster they can make money.

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Testing Cookstoves in Rural Kenyan Schools

Testing Cookstoves in Rural Kenyan Schools

Cooking tests were conducted in randomly selected school kitchens in the Sauri Millennium Villages Project
site, located in Siaya District of Nyanza Province in Western Kenya. The tests compared fuel consumption
measurements obtained using a traditional three-stone fire with those from newly introduced institutional
stoves based on the “rocket” design. The key metric used was Specific Fuel Consumption (SFC), defined as the
weight of firewood consumed in cooking a single batch of food divided by the total weight of food, measured
after cooking. Tests followed the normal cooking practices in the school kitchens and included the typical
range of foods prepared for midday school meals programs. The study included two types of tests: paired
tests, in which most conditions were controlled between one test conducted on a three-stone fire and a
matching test conducted on a “rocket” stove; and unpaired tests, in which conditions were similar, but not
strictly controlled, among two large sets of relatively independent three-stone fire and rocket stove tests.
Results from both paired and unpaired experiments, averaged across all types of food cooked, showed that
the use of rocket stoves yielded significantly lower SFC values without prolonging cooking time when
compared with three-stone fires. An analysis comparing results from paired and unpaired cooking tests
suggests that, due to high variance and sources of bias in unpaired tests, experimental design should favor
paired tests.

Download full paper here: Testing institutional biomass cookstoves in rural Kenyan schools for the Millennium Villages Project

Posted in Africa, Biomass Cook Stoves, By Region, Energy for Development, Kenya, News, Papers0 Comments