E N E R G Y S T O R A G E
IMAGINE SECURING THE ANNUAL SUPPLY OF ENERGY FOR ALL OF MANHATTAN AS HEAT, DEEP BENEATH ONE THIRD OF CENTRAL PARK
T H E H E A T V A U L T
S E C U R I N G E N E R G Y . N A T U R A L L Y
Created by Imaginatives Group
T H E R E N E W A B L E S F U T U R E
T H E H E A T E C O N O M Y
HALF OF OUR ENERGY CONSUMPTION CONCERNS HEAT.
TRANSPORT IS ONE THIRD AND ELECTRICITY IS ONE FIFTH
The Heat Vault is an underground energy store within naturally occurring rocks in the form of heat.
It can be constructed almost anywhere.
The store comprises an architecture of multiple deep boreholes, some to input heat, others to extract it.
The energy input can be from various waste heat sources or can be waste or excess electricity from the power grid or from dedicated renewable power sources.
Heat Vault collects energy in off-peak hours or in seasons with low energy demand at low cost.
Energy storage can be for days, weeks, months, years or even decades, something unattainable by any other method.
It supplies energy at peak times or peak seasons which have high energy demand.
Because it is completely decoupled from global hydrocarbon price volatility, supply can be at reasonable cost to consumers to suit need.
Heat is one direct output. But coupled with other assets above ground, Heat Vault can also supply cooling, electricity or green hydrogen.
And because it is modular, it can be built to match requirements, including the large infrastructure markets at gigawatt-hour or terawatt-hour scale, something unachievable by other types of storage at favourable cost.
THE HEAT VAULT IS LIKE A BANK INTO WHICH DEPOSITS OF GREEN ENERGY ARE DEEP STORED WHEN MOST AVAILABLE AT LEAST COST AND FROM WHICH THEY CAN BE WITHDRAWN WHENEVER NEEDED
Solves Renewables Intermittency
Improves Solar efficiency
Recycles and augments industrial heat
Decarbonises Heat Networks
Enhances Geothermal Energy use
Accelerates Renewables adoption
Repurposes power utility assets
Removes Nuclear Heat excess
STORES VAST ENERGY FOR DECADES
Most major economies have pledged to transition to an energy mix dominated by renewables,
principally solar and wind, by 2050. We have to consistently produce energy and secure it.
This need storage. Lots of it. For long periods. Including whole seasons.
W H A T H E A T V A U L T D O E S
Six facts lead to the conclusion that our renewables future will require vast energy storage
E N E R G Y T R A N S I T I O N
1 Solar and Wind are highly intermittent producers of electricity which can't supply to meet demand
2 The increase in renewables in the energy mix will lead to even greater instability in the future
3 National grid systems cannot manage overproduction of power leading to massive wasted energy through curtailment
4 Significant sums are spent to subsidise producers not to produce electricity
5 Energy storage needs to be greater than a half-day everywhere to reduce long duration gaps in supply
6 Even if renewable systems are built at dramatic overcapacity, which will be costly, there will still be hundreds to thousands of hours of gaps in supply each year
H E A T V A U L T
A R C H I T E C T U R E
Proof of concept in Sweden
H E A T V A U L T I S
BIGGER, CHEAPER AND LONGER LASTING THAN OTHER STORAGE
S E C T O R S
Seasonal demand for heat is highly variable, creating technical and economic challenges for heat networks.
Heat Vault can store heat in Summer when demand and costs are low and supply heat over the four months of Winter, or other seasons, when demand is higher.
The energy transition requires solar and wind electricity to be 60% of mix by 2050, which needs sizeable storage to manage intermittency.
Heat Vault can create vast storage as heat by utilising waste electricity and waste heat during periods of excess or at low cost in off peak hours, storing it for days to years and supplying it to suit demand for heat or electricity. Its use can eliminate curtailment.
Geothermal resources are more commonly discovered in active zones or at great depth, where temperatures are high enough to be useful for electricity or heat supply.
Heat Vault can store excess heat from deep geothermal and take mid-level geothermal energy at lower temperature, boost it to high temperature and store it, making geothermal achievable in many locations without risk of expensive deeper drilling.
Global industrial waste heat is significant. Key industries are also major heat energy consumers at scale and for a wide range of temperature.
Heat Vault can receive waste heat from industry at low to moderate temperatures, store it, reprocess it for heat supply for space or process heating at low temperatures or heat consuming processes at high temperatures.
All forms of nuclear fission or fusion plant generate significant quantities of heat by design or as waste product from reactor coolant systems.
Direct low temperature district heating or higher temperature process heat from isolated nuclear plants may not be dispatchable to meet demand but could be stored within Heat Vault at scale for later re-use.
Fossil fuel-fired electricity generating utilities are in transition and require cleaner alternatives for continued operations of assets and infrastructure.
Rather than partial decarbonisation using gas or biomass feedstocks, Heat Vault coupled with electricity generating turbine technology can achieve full decarbonisation at lower cost than other options and with marked reduction or elimination of feedstocks while retaining generating assets and infrastructure.