Cornwall LEM Residential Electricity Dataset with Solar Production and Battery Storage, 2018-2020

Nicholls, Dan and Kane, David (2022). Cornwall LEM Residential Electricity Dataset with Solar Production and Battery Storage, 2018-2020. [Data Collection]. Colchester, Essex: UK Data Service. 10.5255/UKDA-SN-854578

The Cornwall Local Energy Market (LEM) is a £17m programme that sought to design, build and trial an auction-based flexibility market for distribution network-connected decentralised energy resources (DER). The programme included the creation domestic and commercial scale DER ecosystems that formed part of the LEM trials. The domestic DER ecosystem was made up of 100 private homes, distributed across Cornwall. Each home received a Sonnen battery and solar PV system (where the home did not have an existing PV system). This data deposit and associated reports constitutes the research findings from the domestic DER workstream

Data description (abstract)

Three categories of data are included in this dataset: Measurement Datasets; Forecast Datasets; Dimension Datasets. The Measurement Datasets include the following: 1) Timeseries Database Table: t_msb1m (resolution 1-min): Sonnen data recorded from the 'MySonnenBatterie' (MSB) portal, including a range of Energy records and State of Charge data. 2) Timeseries Database Table: t_ims1m (resolution 1-min): Independent Monitoring System (IMS), consisting of Energy, Power, Grid Voltage, Grid Frequency & Grid Power. 3) Timeseries Database Table: t_ims1s (resolution 1-sec): Independent Monitoring System (IMS), consisting of Power (PV, Grid, BESS) and Grid Frequency. The Forecast Datasets include the following: 1) Timeseries Database Table: t_prodconsforecasts (resolution 1-hr): Production & Consumption Forecasts from Sonnen, via Sonnen VPP. 2) Timeseries Database Table: t_weatherforecasts (resolution 1-hr): Weather Forecasts from external provider, via the MSB portal, including precipitation, solar irradiance and sunshine hours, available at Post Code District level. The Dimension Datasets include the following: 1) Database Table: t_sites: Site List, linking the persistent site ID, to Battery Energy Storage System (BESS) type, BESS power/energy capacities, photovoltaic (PV) capacity and major load type. 2) Additional MetaData: including the following: a) Original Web Questionnaire; completed by respondents from the original recruitment exercise - results available for 66 sites; b) Desktop & Site Surveys, Design & System Costs; completed by SunGift (Installation Contractor) on behalf of Sonnen (BESS Vendor) - results available for 71 sites; c) Summary of EPC data; data retrieved from the EPC register[1] completed by TLC - results available for 75 sites. A more complete description is provided in the Data Dictionary document. ------ [1] EPC Register (England & Wales), https://www.epcregister.com/, accessed October 2020

Data creators:

Creator Name	Affiliation	ORCID (as URL)
Nicholls Dan	Centrica PLC
Kane David	Trilemma Consulting Limited	https://orcid.org/0000-0001-6999-0346

Contributors:

Name	Affiliation	ORCID (as URL)
Parish David	Centrica PLC
Cooper Donna	Centrica PLC
Peacock Andrew	Trilemma Consulting Limited
McCallum Peter	Trilemma Consulting Limited	https://orcid.org/0000-0002-4546-0452

Sponsors:

European Regional Development Fund, Centrica PLC

Topic classification:

Science and technology

Keywords:

ENERGY TARIFFS, ENERGY CONSUMPTION, ELECTRICAL ENERGY CONSUMPTION, ENERGY BILLS, ENERGY GENERATION, ENERGY INFRASTRUCTURE, ENERGY PRICES, ENERGY SUPPLY, ENERGY TRANSITION, SOLAR ENERGY

Project title:

Cornwall Local Energy Market (LEM)

Grant holders:

Centrica PLC

Project dates:

From	To
15 August 2016	31 December 2020

Date published:

05 Feb 2021 14:02

Last modified:

12 Oct 2022 07:56

Coverage and Methodology

Collection period:

Date from:	Date to:
1 September 2018	30 September 2020

Geographical area:

Cornwall

Country:

United Kingdom

Spatial unit:

Grid > British National Grid
Postal > Postcode (District)
Administrative > Unitary Authorities (England)

Data collection method:

The method for data collection differed depending on data type and collection equipment. In the case of timeseries data ('Measurement Datasets' and 'Forecast Datasets'), four methods were used: 1) direct measurement from arrays of current transformers, wired to a multi-channel electrical meter at each site, installed specifically for this project. 2) data scraped from the MySonnenBatterie portal, linked to the on-board controller of a device installed specifically for this project. 3) data downloads from the MySonnenBatterie portal, linked to the on-board controller of a device installed specifically for this project. 4) data downloads from the MySonnenBatterie portal, relaying 3rd party data from an external provider (weather forecasts). From the 'Dimension Datasets', describing the sites and households, three methods were used: 1) anonymised household survey data collected from web questionnaires. 2) anonymised desktop and site survey data, collected using design parameters and analytical results for the equipment installations. 3) anonymised data from the public Energy Performance Certificate (EPC) register.

Observation unit:

Household, Housing unit

Kind of data:

Numeric, Text

Type of data:

Other surveys, Qualitative and mixed methods data, Time series data

Resource language:

English

Access and Administration

Data sourcing, processing and preparation:

There were two sources of 3rd party data for this project: weather forecast data (collected via a proprietary equipment), and data from the public England & Wales Energy Performance Certificate (EPC) register, used only for the relevant 100 sites in Cornwall (please note users are advised to consult the Royal Mail copyright notice made available under Related Resources for the use of the EPC data). Datasets were linked via a persistent site ID, used across all data tables. Specific timeseries columns were checked for consistency, scale issues and gaps. Units are clarified for all timeseries fields within the column headings. Missing data heatmaps are provided in the documentation (Data Dictionary). Occurrence of gaps were minimised for the recorded measurements, through reactive data monitoring.

Rights owners:

Name	Affiliation	ORCID (as URL)
Nicholls Dan	Centrica PLC

Contact:

Name	Email	Affiliation	ORCID (as URL)
Nicholls, Dan	Dan.nicholls@Centrica.com	Centrica PLC	Unspecified
Kane, David	david.kane@trilemmaconsulting.co.uk	Trilemma Consulting Limited	https://orcid.org/0000-0001-6999-0346
Nicholls, Dan	https://www.linkedin.com/in/danjnicholls	Centrica PLC	Unspecified