Updated for 2026/2027
Looking for information about what grants are currently available across Northern Ireland and whether you are eligible to apply? This short guide will help you to navigate schemes currently on offer for the year ahead
What is NISEP?
The Northern Ireland Sustainable Energy Programme (NISEP) helps homeowners, communities and businesses across NI to become more energy efficient and reduce their carbon footprint and is administered by the Energy Saving Trust on behalf of the Utility Regulator.
- The NISEP year runs from April 2026 until March 2027, or until funds have been allocated
- Existing funds are limited and are allocated on a first come, first serve basis. Scheme managers may hold a waiting list for new applicants
- Properties will receive a building survey to ensure they are suitable for the energy saving measures within your application
For the year ahead, there are 15 active schemes on offer across 9 scheme managers; featuring Phoenix Energy, Evolve, Power NI Energy Ltd, the Northern Ireland Housing Executive and more.
Do get in touch with scheme managers directly to express your interest. Contact details are available within the list of active schemes.
Support for Local Business
- NISEP offers support for businesses across Northern Ireland to invest in energy-saving technologies, offering a 20% grant across a range of Energy Saving Technologies including heat pumps, solar PV, solar thermal and boiler replacements.
- The scheme is managed by Power NI, offering support up to £30,000
Support for homeowners
NISEP offer a range of fully funded and partially funded schemes that cover installation of less carbon intensive central heating systems, alongside a range of home energy efficiency improvements.
Below is a brief snapshot of active schemes for the year ahead. To view the full list of NISEP schemes on offer for this current NISEP period please click here. This document will include the full eligibility criteria for each scheme and the scheme managers to contact
Fully Funded Schemes (Heating & Insulation)
These schemes are targeted at homeowners with an annual income of less than £28,000 (single person household) or £35,000 (couple/family).
- Better Energy Homes Plus managed by O’Kane Plumbing and Electrics
- Efficiency Plus managed by Phoenix Energy (currently running a waiting list)
- Warm at Home Plus managed by Evolve Network (available in the Evolve license area only)
Renewable Heating (Heat Pumps)
- Green Heat NI managed by Refresh NI, offering fully funded air source heat pumps and cavity wall and loft insulation for low-income households
- Toasty Homes managed by McGaffin Mechanical, offering support towards heat pumps, solar PV and battery storage
Targeted Insulation Improvements
For households slightly above the income threshold, additional insulation grants are available for incomes up to £33,000 (single person household) or £40,000 (couple/family).
Schemes include Keep Warm managed by Workspace Ltd, Thermal Comfort managed by Energystore and Efficiency Plus managed by Refresh NI
Additional Support for Homeowners – Boiler Replacement Allowance with Phoenix Energy & Action Renewables
Phoenix Energy, in partnership with Action Renewables, offers a cashback incentive for switching to natural gas, offering up to £600 in boiler replacement allowance for qualifying customers until 30th June 2026. To apply, households must have an income less than £90,000
For more information about the Boiler Replacement Allowance offer and eligibility criteria, please visit https://phoenixenergyni.com/bra
Additional Support for Local Business – Energy Efficiency Capital Grant
- Manged by Invest NI, this grant opportunity supports businesses to reduce their energy use overheads and build resilience through improved energy efficiency
- This is a five-year programme open for applications and will offer businesses grants of up to £150,000 for investments in areas such as lighting, heating and cooling equipment, compressed air systems and renewable technologies
For more information on this programme, head over to Invest NI’s Energy Efficiency Capital Grant homepage : Energy Efficiency Capital Grant | Invest Northern Ireland
This scheme is currently on hold while the team conducts a performance review to better align with the Department for the Economy’s green targets. Invest NI plans to reopen the programme following this review.
Author: Jack Stewart, Consultancy team