The Jewish Community Academy Trust has been awarded a grant of £675,000 by the Department for Education to install low carbon heating in three of its primary schools.
Solar panels and heat pumps will be installed at Hertsmere Jewish Primary in Radlett, Sacks Morasha in Finchley and Wolfson Hillel in Southgate.
Funding will also go towards pipe insulation and door proofing.
The trust’s fourth school, Rimon in Golders Green, already complies with government recommendations.