Back to Blog

What’s a Thermal Envelope?

Coming Soon –

2019 Green Home Tours!

 

When you heat (or cool) your home, it’s important to keep that conditioned air inside – this is done by having good insulation and windows. Each year, OPALCO and the San Juan Islands Conservation District team up to show examples of local homes that use energy in the best ways possible. We’ll be posting the October specifics soon, and in the meantime you can relive previous tours starting with a video about the thermal envelope, featuring Doug Poole from Sage Building Solutions on Lopez Island!

 

You may also like...

ice harbor dam

Quick Fact: Where Does OPALCO Stand on Regional Power and the Dams?

OPALCO’s mission is to provide reliable power to its membership. OPALCO’s power comes from the Bonneville Power Administration (BPA), which utilizes hydropower, some of it from the Lower Snake River … Read more
meeting

OPALCO Board Passes 2026 Budget and Rates

The 2026 OPALCO annual budget was approved at the November 20th board meeting including changes to the rate structure and a ~6% rate increase for residential members. This works out … Read more
we want your feedback

OPALCO Conducting a Member Survey through December 12, 2025

OPALCO has been engaging with members this year about our shared energy future and the future of renewables in San Juan County. Regionally and throughout the entire country, industry experts … Read more