February
- 17 February - Young Person Advice Pack Workshop. County Hall, Market Road, Chelmsford CM1 1QH
- 23 February - Climate Action Annual Report and Climate Action Plan Launch Event. Online.
- 28 February - Manifesto For Essex Eco-Gathering. Chelmsford Theatre Studio, Fairfield Road, Chelmsford CM1 1JG
March
- 3 March - RHS Hyde Hall Educator Open Evening. RHS Garden Hyde Hall, Creephedge Lane, Rettendon, Chelmsford, Essex, CM3 8ET
- 4 March - Healthy Schools Festival. The Brentwood Centre, Doddinghurst Road, Brentwood CM15 9NN
- 20 March - Essex Community Energy Conference. Museum of Power, Hatfield Road, Maldon CM9 6QA
- 25 March - Sustainability in Education Conference. Anglia Ruskin University, Bishop Hall Lane, Chelmsford CM1 1SQ
- 28 March - EA Sustain. Firstsite, Lewis Gardens, High Street, Colchester CO1 1JH
April
- 22 April - Clean Energy Jobs and Careers Fair. Chelmsford College, Moulsham Street, Chelmsford CM2 0JQ
May
- 9 May - Essex Biodiversity & Regenerative Food Festival. Promenade Park, Maldon CM9 5JQ
- 16 May - Essex Early Years Conference 2026. Anglia Ruskin University, Bishop Hall Lane, Chelmsford CM1 1SQ
- 27 May - Endangered Species Day. Colchester Zoological Society, Maldon Rd, Colchester CO3 0SL
June
- 23 June - Essex Schools Food and Farming Day. Writtle College, Lordship Rd, Writtle, Chelmsford CM1 3RR