FAQ

Good questions. Clear answers.

A closer look at thermal storage, connected metering, and what it means to explore a pilot with Sparse.

Thermal storage

What is a sand battery?

A sand battery stores energy as heat in a solid storage medium. Electricity provides the charging energy, and the stored heat is transferred to a useful application later.

Does it supply electricity?

The systems described here are intended to supply heat. They should not be treated as batteries that return stored electricity to the grid.

Does it need solar panels?

Not necessarily. A proposed installation may use grid electricity, renewable electricity, or a combination. The appropriate arrangement depends on the site and its economics.

Will it replace the existing heating system?

That depends on the project. Storage may be evaluated as a supplement or as part of a broader heating replacement. Required heat output, integration, and backup arrangements need to be assessed first.

How much could it save?

There is no single savings figure that applies to every installation. Heat demand, tariffs, charging schedule, equipment cost, and system performance all affect the comparison.

Is thermal storage emission-free?

The electric storage process does not require combustion of fuel in the store. That is not the same as zero total emissions: electricity supply, manufacturing, installation, and any backup heating must also be considered.

What about safety?

Thermal-storage installations involve high temperatures, electrical equipment, and heating-system interfaces. Safety assessment, protection systems, installation requirements, and operating procedures must be developed for the specific installation. This website is not an installation manual.

Connected metering

Can you connect my existing heat meters?

We’re developing support for commonly used heat meters with an IEC 62056-21 interface for local meter data exchange. Share the model information so we can confirm the interface implementation, available readings, and equipment needed for your site.

Does every meter need to be replaced?

Our development work focuses on reading compatible existing meters. Some installations may need additional equipment or a different approach; this must be established through assessment.

How often will readings be collected?

Our planned collection interval is 5–15 minutes, selected for the meter and operating need. With connectivity available, this supports timely review of heat use, unusual demand, and issues that need investigation.

What if the connection is interrupted?

The solution is designed to retain captured readings in persistent local storage and synchronize them to secure online storage with backups when connectivity returns. Captured records survive a power interruption; continued collection requires power to the meter and reader. Backup power arrangements are defined for each installation.

Does remote reading automatically enable billing or control?

No. Reading a meter is different from operating control equipment or establishing approval for billing use. Those functions have their own technical and procedural requirements.

How are readings protected?

Our design combines sealed collection equipment, unique device certificates, encrypted transfer, encrypted storage and backups, and authenticated access with appropriate permissions. We are developing the service to meet applicable Mongolian data-protection requirements.

Working together

What is involved in a pilot?

We begin with the operating challenge, review site and equipment information, and define the questions a pilot should answer. Scope, responsibilities, costs, and evaluation criteria are agreed before installation.

Do I need to buy the thermal battery?

Our primary offer is Heat-as-a-Service: Sparse arranges financing, installation, monitoring, operation, and maintenance, and you pay for heat under an agreed heat-supply contract. It is designed to simplify operation and lower upfront costs compared with buying the battery. Direct purchase is also available if you prefer to own the equipment.

Can a purchased battery include a warranty and ongoing support?

A warranty and service/repair package can be arranged with a battery purchase. Coverage, duration, pricing, and support responsibilities are agreed in the project proposal.

Are prices published?

Not at this stage. Equipment, installation, and ongoing-service needs vary by project. Commercial arrangements are discussed after the requirements are understood.

Can organizations outside Mongolia get in touch?

Yes. We welcome relevant conversations with international partners. Any project would require a separate assessment of local requirements and our ability to support it.

Let’s find a useful next step

Have a heating challenge in mind?

Tell us about your building, network, or project. Let’s explore whether thermal storage, connected metering, or a focused pilot is a useful next step.

Discuss a Pilot