Storage is critical to flexible and reliable access to renewable energy sources. In this challenge, competitors combined traditional optimization methods and machine learning to build algorithms for controlling a battery charging system as efficiently as possible.
No. of Entries
VietNam national ORlab1st Place Team
Each challenge in the Power Laws series explored a different aspect of energy efficiency and management. The winning algorithms were released under an open source license to spread understanding about how energy modeling works and what approaches are most effective.
Flexibility in energy management is essential to avoid costly reinforcements of the power system and to maintain secure supply while increasing the penetration of renewable sources. Energy storage can increase smart building flexibility, while time of use tariffs can incite use of energy when it is the most available. This is a delicate balance, where algorithms can help battery charging systems to be as efficient as possible (for instance, buy more energy when its price is lowest, and buy less or sell energy when its price is highest).
Using data from Schneider Electric, competitors built models to control a battery charging over a simulation period. At the end of the challenge, the simulation was scored across all submitted algorithms, and those that spent the least amount of money over that period rose to the top of the leaderboard.
The top algorithm drives 20% savings – that is 20% less money spent using the battery than without it. The winning models used traditional optimization tools like Linear Programs and constrained optimization, but also leveraged machine learning and measurements of uncertainty to build the most reliable optimization system.
Power Laws: Optimizing Demand-side Strategies: Rules and Terms of Data Use
DrivenData Competition Rules
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Private sharing of code
Privately sharing code or data outside of teams is not permitted.
Public dissemination of entries
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Open licensing of winners
Winning solutions need to be made available under The MIT License (an open source software license commonly described at http://opensource.org/licenses/MIT) in order to be eligible for recognition and prize money if offered.
Documentation for winning solutions
Winning solutions must be documented using the provided Winning Model Documentation Template in order to be eligible for recognition and prize money if offered.
The number of submissions per day is restricted to a fixed value on a per-competition basis. Any attempt to circumvent this limit will result in disqualification.
External data is not allowed unless otherwise noted explicitly on these competition pages. Participants agree to make no attempt to use additional data or data sources not provided on these competition pages.
These are the complete, official rules for the Competition (the 'Competition Rules') and incorporate by reference the contents of the Competition Website listed above.
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Selection of winners
This Competition is a challenge of skill and the final results are determined solely by leaderboard ranking on the private leaderboard (subject to compliance with these Competition Rules). Participants' scores and ranks on the Competition Website at any given stage of the Competition will be based on the evaluation metric described on the Competition Website, as determined by applying the predictions in the Submission to the ground truth of a validation dataset whose instances were a fixed set sampled from the Data.
The evaluation metric used for scoring and ranking Submissions will be displayed on the Competition Website.
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- disqualify your Submission(s); or
- require that you remediate within one week all issues identified in your Submission(s) (including, without limitation, the resolution of license conflicts, the fulfillment of all obligations required by software licenses, and the removal of any software that violates the software restrictions).
A tie between two or more valid and identically ranked submissions will be resolved in favor of the tied submission that was submitted first.
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Prizes and conditions
If the Competition has a prize, the Prize Winner(s) will be notified and announced within 30 days of the end of the Competition on the Website.
The Prize Winner(s) will receive their prizes awarded as a check or wire transfer.
If a Team wins a prize, all Team members must submit a single written statement describing how the prize is to be allocated among the Team members. If the Team fails to submit such statement within 30 days after Sponsor requests it, then Sponsor will distribute the prize among Team members in equal shares and will have no further obligation to winning Team members.
As a condition of receipt of the prize, winner must deliver the algorithm's code and documentation to Sponsor. The source code must contain a description of resources required to build and run the algorithm. The accompanying documentation should be consistent with DrivenData's Winning Model Documentation Template, which will be provided to winners within 30 days of the end of the Competition Period.
The prize may be awarded to an alternate winner if required documentation is not returned within thirty (30) days after mailing to winner, if prize notification letter/email or prize is returned as undeliverable, or if winner does not respond to an email or other communication from Sponsor within ten (10) days of the date sent. Allow thirty (30) days for prize delivery. By accepting any prize/award, Winner agrees to allow DrivenData and/or the Competition Sponsor to disclose Winner's first name, first initial of last name, and city of residence, as well as prize information to the extent required by law, and if so required by law, Winner agrees to the disclosure of additional personal information, all without additional compensation.
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- represents that he/she/it has the unrestricted right to grant that license.
OPEN SOURCE LICENSE. If the Winner License Type for the Competition (see Winner License Type above) is Open Source License, then each Winner by accepting a Prize thereby:
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- represents that he/she/it has the unrestricted right to grant that license.
CHEATING. Participating using more than one DrivenData account is deemed cheating and, if discovered, will result in disqualification from the Competition and any other affected Competitions and may result in banning or deactivation of affected DrivenData accounts.
DrivenData reserves the right to request information associated with our investigation of suspected cheating. Failure to respond to these requests (including failure to furnish the requested information) within ten (10) days is grounds for disqualification.
RECEIVING PRIZES. After verification of eligibility, if prizes are awarded, each Prize winner will receive the prize in the form of a check or wire transfer made out to the Prize winner (if an individual, or to the individual Team members if a Team). Allow 30 days from final confirmation for Prize delivery. Any winners who are U.S. citizens will receive an IRS 1099 form in the amount of their prize at the appropriate time. Prize winners are responsible for any taxes, fees or other liability resulting from their receipt of a Prize.
Except where prohibited by law, entry constitutes permission to use winners' names, hometowns and likenesses for online posting, and/or any advertising and publicity without additional compensation. Winners may also be required to sign and return a release of liability, declaration of eligibility and, where lawful, a publicity consent agreement, as conditions of receiving a prize. Failure to comply with the aforementioned conditions shall be grounds for forfeiture of a prize.
Data use and code sharing
DATA. "Data" means the Data or Datasets linked from the Competition Website for the purpose of use by Participants in the Competition. For the avoidance of doubt, Data is deemed for the purpose of these Competition Rules to include any prototype or executable code provided to Participants by DrivenData or Competition Sponsor via the Website. Participants must use the Data only as permitted by these Competition Rules and any associated data use rules specified on the Competition Website.
Unless otherwise permitted by the terms of the Competition Website, Participants must use the Data solely for the purpose and duration of the Competition, including but not limited to reading and learning from the Data, analyzing the Data, modifying the Data and generally preparing your Submission and any underlying models and participating in forum discussions on the Website. Participants agree to use suitable measures to prevent persons who have not formally agreed to these Competition Rules from gaining access to the Data and agree not to transmit, duplicate, publish, redistribute or otherwise provide or make available the Data to any party not participating in the Competition. Participants agree to notify DrivenData immediately upon learning of any possible unauthorized transmission or unauthorized access of the Data and agree to work with DrivenData to rectify any unauthorized transmission. Participants agree that participation in the Competition shall not be construed as having or being granted a license (expressly, by implication, estoppel, or otherwise) under, or any right of ownership in, any of the Data.
EXTERNAL DATA. Unless otherwise expressly stated on the Competition Website, Participants must not use data other than the Data to develop and test their models and Submissions. Competition Sponsor reserves the right in its sole discretion to disqualify any Participant who Competition Sponsor discovers has undertaken or attempted to undertake the use of data other than the Data, or who uses the Data other than as permitted according to the Competition Website and in these Competition Rules, in the course of the Competition.
CODE SHARING. Participants are prohibited from privately sharing source or executable code developed in connection with or based upon the Data, and any such sharing is a breach of these Competition Rules and may result in disqualification. Participants are permitted to publicly share source or executable code developed in connection with or based upon the Data, or otherwise relevant to the Competition, provided that such sharing does not violate the intellectual property rights of any third party. By so sharing, the sharing Participant is thereby deemed to have licensed the shared code under the MIT License (an open source software license commonly described at http://opensource.org/licenses/MIT).
OPEN-SOURCE CODE. A Submission will be ineligible to win a prize if it was developed using code containing or depending on software licensed under an open source license:
- other than an Open Source Initiative-approved license (see http://opensource.org/licenses); or
- an open source license that prohibits commercial use.
Participant warranties and obligations
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