Half-hourly data HHD
Half-hourly data (HHD) also just referred to as Half Hourly (HH) is normally used in relation to energy use, metering or in connection with post occupancy evaluation, energy monitoring or auditing. It simply means that the measuring device can record the amount of energy used in every half-hour period and is normally a function that is offered by modern smart energy meters.
There are a number of potential benefits of tracking energy use every half hour:
- Half hour periods can help in determining cases when and therefore where excess energy is being used.
- Half hour periods can help determine specific times of a day when higher energy is used.
- Half hour period measuring communicated with suppliers can allow them to offer time-of-use energy tariffs that charge less for energy when demand is low.
- Half hour period measuring can help energy suppliers and the grid in managing energy demand and supply as well as predicting high and low use periods.
Half hour data for energy use is increasingly a requirement of energy companies and is supported by government policy through the installation of smart meters.
[edit] Related articles on Designing Buildings
- Articles about electricity.
- Can we keep the lights on.
- Changing patterns in domestic energy use FB 76
- Demand Flexibility Service.
- Developing system intelligence for optimising building electricity networks
- Economy 7, 9 and 10
- Electricity generation
- Electricity supply
- Empower community energy management.
- Energy Use Intensity
- Energy targets for buildings.
- ECA calls on Government to reform and rebalance energy levies and avoid cost of living crisis.
- Electrical consumption.
- Electrical energy.
- Electrical power.
- Electricity bill.
- Energy cost.
- Energy price crisis: ECA calls for energy levy reform.
- Energy tariffs.
- Fuse box.
- From economy 7, 9 and 10 to time-of-use tariffs.
- Smart grid electricity network
- The key trends making our cities greener, safer and smarter
- The Future of Electricity in Domestic Buildings
- The use of batteries to store electricity for buildings
- TV pickup
- Smart electricity tariffs
- Glossary of electrical terms.
Featured articles and news
The future workforce: culture change and skill
Under the spotlight at UK Construction Week London.
A landmark moment for postmodern heritage.
A safe energy transition – ECA launches a new Charter
Practical policy actions to speed up low carbon adoption while maintaining installation safety and competency.
Frank Duffy: Researcher and Practitioner
Reflections on achievements and relevance to the wider research and practice communities.
The 2026 Compliance Landscape: Fire doors
Why 'Business as Usual' is a Liability.
Cutting construction carbon footprint by caring for soil
Is construction neglecting one of the planet’s most powerful carbon stores and one of our greatest natural climate allies.
ARCHITECTURE: How's it progressing?
Archiblogger posing questions of a historical and contextual nature.
The roofscape of Hampstead Garden Suburb
Residents, architects and roofers need to understand detailing.
Homes, landlords. tenants and the new housing standards
What will it all mean?
The Architectural Technology podcast: Where it's AT
Catch-up on the latest episodes.
Edmundson Apprentice of the Year award 2026
Entries now open for this Electrical Contractors' Association award.
Traditional blue-grey slate from one of the oldest and largest UK slate quarries down in Cornwall.
There are plenty of sources with the potential to be redeveloped.
Change of use legislation breaths new life into buildings
A run down on Class MA of the General Permitted Development Order.
Solar generation in the historic environment
Success requires understanding each site in detail.





















Comments
[edit] To make a comment about this article, or to suggest changes, click 'Add a comment' above. Separate your comments from any existing comments by inserting a horizontal line.